Perhaps there are a lot of people out there with useless, empty swimming pools? If so, here’s even more encouragement to get busy and do something with it! This family has, apparently, become self-sufficient in food production in record time – just by making clever use of their disused swimming pool.

A taste (excuse the pun) of some of the info available at their site:

The GP combines:

• solar power – harnessing and storing the sun’s energy
• water conservation – using less water and recycling waste water
• poultry farming – raising chickens
• aquaculture – raising tilapia fish
• hydroponic gardening – growing fruits, veggies, & herbs without soil
• organic horticulture – using natural methods to control garden pests
• aquaponics – the symbiotic cultivation of produce and fish in a recirculating hydroponic environment.
• biofiltration – natural water filtration method using biochemistry and duckweed

I totally love the idea of a closed loop food production system. Who wouldn’t? My only concern is over the hydroponic aspect – where plants are taking up nutrients too readily, as they’re in water soluble form. You could describe plants as being something of a ‘high tech’ pump. When given the opportunity, they’ll take and take until they can take no more. In the soil, this ‘taking’ is regulated by soil micro-organisms which effectively feed plant roots balanced quantities of the nutrients they require, in slow release, measured quantities. But in water, with no soil or microorganisms present, nutrient intake is not moderated. As I wrote in Soil – Our Financial Institution, excessive soluble nitrogen intake, in particular, can be hazardous to our health – even carcinogenic:

This natural process of micro-organisms feeding plants is significant, and highly complex. Through the work of these creatures a plant receives what we might call a ‘balanced diet’. To illustrate: What do you think a small boy would do if you gave him an enormous bar of chocolate to eat? Chances are good he’d keep eating it until it made him sick (even if half of it is still left on his face!). Children are unable to gauge an appropriate quantity, and will quickly scoff all they can fit in. The result? Even if he doesn’t make himself ill, your child goes on a physical and emotional roller-coaster ride until the refined sugar-induced energy dissipates. A wise parent might instead supply an appropriately sized portion of ’sugar’ in its natural state – bound up with fibrous dry matter in the form of whole fruit.

Modern agri-businesses do similar with their water-soluble fertilisers – they set a ‘meal’ before the plant that can be immediately absorbed by plant roots, essentially by-passing the balanced slow-release feeding by micro-organisms. Just like a child, this affects a plant’s health.

For example:

Pesticide residues are not the only problem arising from modern agricultural techniques. Increasingly, nitrate levels in vegetables are causing concern, although most attention so far has been focused on nitrates in water supplies…. About 70% of average daily nitrate intake comes from vegetables, compared with only 20% from drinking water. Nitrates are taken up very readily by crops, and if they are not utilised immediately in the formation of protein, they are stored in the cells in their original form. There is then the risk that when nitrates are ingested or cooked, they convert to nitrites which can potentially combine with amines to form carcinogenic nitrosamines. – Organic Farming, Nicholas Lampkin p.565.

Perhaps an even better way to describe hydroponics than the chocolate bar analogy would be to say that it’s like taking food directly into your veins, in liquefied form via hypodermic needle – bypassing the digestive processes of the stomach. The soil could be likened to the stomach in this sense – it digests and distributes food to plants.

There’s a knock-on impact, or consequence, of this form of feeding. As my Soil article continues to share, plants fed highly soluble nutrients grow fast and look great, but can be chemically imbalanced, and thus unhealthy – and unhealthy plants attract ‘pests’ and disease. Insects and fungal disease are attracted to such plants, particularly since, in addition, the environment they’re grown in tends to be excessively moist and anaerobic. Hydroponic systems often collapse because of this. Cleanliness/sanitation and isolation have been very important in keeping hydroponic systems functional, and newer hydroponic systems have begun to incorporate root sanitising systems utilising ultraviolet light or other.

Early hydroponic operations were devastated by pest problems. White flies, leaf miners, pin worms, nematodes, Cladosporium leaf mold and viruses, as well as root diseases such as Pythium root rot and bacterial wilt, were common. Today, unlike 20 years ago, the drain solution is often sterilized (Runia, 1995). The options are heat treatment, ozone and ultraviolet radiation. – University of Arizona

I’d love to hear thoughts from you guys – particularly aquaponic savvy people who understand the thoughts I’m expressing here. Ideally we’d design such a system as above, but somehow design it so soil and microrganisms can still play their role, and ensure the plants we’re getting from the system are not only inexpensive, plentiful and low-to-no input, but healthy too!

Resources:

• Aquaponics Made Easy DVD

Whilst the Russians learn to live without buckwheat and displaced people are poised for land-struggles in Central Africa, boffins crack the wheat genome, which promises to keep us trying the same industrial scale thing for ever. And how will we fuel this ever expanding industrial agriculture sector? Hmm, maybe.

BAA propose to compost food waste – who’d have thunk it?

Some people think the permaculture flower is a remnant of the hippie’s flower power movement, or that it has something to do with New Age – just another consumerism idea to be sold to the confused and rich people of the middle classes. Oh no, the ‘flower power’ of the permaculture flower has real power. It has the power to reunite humanity with the complex systems of nature, so they can live in symbiosis, enriching each other. Nothing else possesses this power.

The petals’ colours are given by the pattern languages they cover. These adapt to place and culture, giving the flower a local color. The seven petals together support all aspects of life. It is not just a flower of beauty, or with a pleasant smell. No, this flower can provide you with everything you need, for all aspects of life. Nothing else I know can do that.

In the core you find what are most valuable, the basic ethics and the guiding principles. The core is like the heart of the flower; every permaculture design has its origin here. The evolutionary spiral path is the sign of the permaculture flower – it’s visionary, integrated into its genes. It starts with ethics and design principles, and it starts with you at a local level. The path is then moving outward connecting all the fields of the society into integrated patterns and pattern languages, making the world a living whole. And this spiral is eternal, like evolution is.

Even though I’m not a permaculture designer I’ve put some consideration into these guiding principles. Before I learned about permaculture these thoughts were hidden from me, but when I see the world from a permaculture perspective it looks different. Very different. But keep in mind these are just some loose thoughts from me, a deeper understanding are to be found at David Holmgren’s home page.

Observe and Interact

Good design starts with observation and interaction with place and history. Here we see the difference between permaculture projects and other projects – the time and energy spent to observe and understand the patterns of time and place, before implementing any new design. This is why I set up a list of criteria that should be met before you invest your time or money in a project. For example, an aid project:

1. The project is using time and energy in observing the patterns of place, nature, culture, community and history. This is done in cooperation with the native people they are intended to help.
2. The project is paying a lot of respect to the patterns of place, nature, culture, community and history, being very careful not to disturb any of these patterns, and that any new systems of design will enrich and strengthen the existing patterns.
3. The project leader should be skilled / experienced in decoding and implementing patterns.

Design from Patterns to Details

In a pattern language you start with the whole and put in the details as you go, if not the whole cannot evolve.

Every pattern has to be unfolded; a living process is by nature morphogenetic, using generative codes. A flower is made this way and nature works this way to avoid trillions of errors – errors that unavoidably occur if you try to force a design upon nature or a community.

If an embryo were shaped by fabrication, and not generated, the number of mistakes would be unbelievably large.

The human embryo is created by 50 doubling of cells. Starting with a single cell (the fertilized egg), after 50 doublings, the embryo has 250 cells. During this doubling process that occurs 50 times, each cell has the opportunity to adapt itself, and to remove possible mistakes by position, adaption, pushing and pulling. The total number of opportunities for correction, then, in the growing embryo, is (1+2+2²+2³+….2⁵⁰) = 2⁵¹. Reversing the argument, we may express this by saying that the assembly of embryo cells, if not given a chance for adaption and instead made by design and fabrication, would typically have 2⁵¹ mistakes – a truly enormous number, roughly 10¹⁵, or a thousand trillion mistakes. That is what would happen if an embryo were designed and built, not generated. If an embryo were built from a blueprint of a design, not generated by an adaptive process, there would inevitably be one thousand trillion mistakes. Because of its history as a generated structure, there are virtually none. – The Process of Creating Life, by Christopher Alexander, page 187-188

And the fundamental answer is, that there is a fundamental law about the creation of complexity, which is visible and obvious to everyone – yet this law is, to all intents and purposes, ignored in 99% of the daily fabrication process of society. The law states simply this: ALL the well-ordered complex systems we know in the world, all those anyway that we review as highly successful, are GENERATED structures, not fabricated structures.” – The Process of Creating Life, by Christopher Alexander, page 180

Always keep this in mind; a living structure cannot be fabricated, it has to be generated!

Integrate Rather than Segregate

The core of the pattern practice is to integrate rather than segregate. This means to use and value diversity, all in a meaningful relationship with each other. A completely integrated pattern language produces no waste, especially by not wasting human capital, which is the largest waste problem in our western societies. Our so called “modern societies” produce almost nothing but waste, and the more waste, the more “modern” according to most political and economical theory. Even recycling, which for the most part means downcycling, is mainly a waste of time and energy. See also.

A modern city like Brasilia is based on the completely opposite – segregate rather than integrate – which is the core of modernism. And this is a tragedy, because this is the opposite of an integrated life, and to live an integrated life is the meaning of life.

The world’s leading anti modernist, Christopher Alexander, has dedicated his life to creating an integrated world, which means a world that consists of a deep wholeness. Just take a look at pattern 9 in A Pattern Language.

Conflict

The artificial separation of houses and work creates intolerable rifts in people’s inner lives.

Resolution

Use zoning laws, neighborhood planning, tax incentives, and any other means available to scatter workplaces throughout the city. Prohibit large concentrations of work, without family life around them. Prohibit large concentrations of family life, without workplaces around them.

There is nothing I despise more than these monocultures of houses so common today; I hate them even more than lawns. To make the situation even worse are houses ordered in rows, like a plantation of houses, every house separated from one another, while in nature most things are ordered in clusters or guilds. Urban and rural design should have been based on house clusters.

Conflict

People will not feel comfortable in their houses unless a group of houses forms a cluster, with the public land between them jointly owned by all the householders.

Resolution

Arrange houses to form very rough but identifiable clusters of 8 to 12 households around some common land and paths. Arrange the clusters so that anyone can walk through them, without feeling like a trespasser.

Why can’t people understand that monocultures make life monotone?!?

The opposite of this madness is the ecovillage, but because of individualism (which today is identical with consumerism) and sectorialism (most visible in bureaucracy), people find it almost impossible to create something so nice today.

Still, my dream is someday to live in an ecovillage by Lake Mjøsa.

Use Small and Slow Solutions

Using small and slow solutions is maybe the most neglected principle today. There is a lot of talk about renewable energy and green technology, but almost nothing about using small and slow solutions, which could have been the most important solution. I recently learned that the amount of fossil fuels like coal, oil and gas consumed every year within the European Union equals 12000 times the annual hydro power production of Norway. Where in the world is the EU going to get 12000 Norway’s worth of renewable energy to replace this? Maybe we have to reintroduce the slave trade, because this abuse of fossil fuels equals roughly 1000 energy slaves for each one of us.

Our large and fast solutions are enormously resource hungry, and not just for energy. For example, the amount of macadam necessary for the EU infrastructure equals 10 – 15 tons for every person every year. With an average life span at ca 75 years this means 750 – 1125 tons per person. Try to crush 1000 tons of granite by using a sledge hammer, and you might get an idea about how dependent we are upon fossil fuels to sustain our lifestyle.

Quite a lot of this is taken from the Norwegian mountains. When they find a proper mountain close to the Sea they produce the macadam this way:

First they drill a vertical hole down to sea level, where they make a cave inside the mountain for the crushing mill. Then they start crushing the mountain from above in a large circle around the hole, into which they pour the bigger stones going to the crushing mill. The macadam is transported from here to a ship – one ship every week. The hollowing of the mountain is placed in such a way that it’s not visible from the sea, so not disturbing the mountain’s profile and the tourists view from a cruise ship.

I came to think that our “modern societies” are like these mountains, just an illusion.

Much of this macadam is mixed with asphalt, and this way the people of Europe drive on the top of the Norwegian mountains every day, not even giving it a thought.

But macadam is also used as a bed for pipelines all over the continent, for transporting water and sewage in huge systems. Here where I live they catch the water from ca 200 meters below the surface of Lake Mjøsa, from where they pump it to people living up to 400 meters above the lake. For some of these remote dwellings there is no pipeline for the sewer, so they pump it into trucks driving it down to the sewage cleaning plants from where the water is finally pumped back to Lake Mjøsa.

You maybe call this a sick pattern, but it’s not a pattern at all, because a pattern is something which is in a meaningful connection with something else.

Part of the solution is pattern 178, a compost toilet. This small and slow solution uses no energy at all, still producing both compost and negawatts. Small and slow solutions produce a lot of negawatts – saving megawatts – the easiest way to “produce” new energy. In some countries 30-40% of the energy consumed by society is invested into the delivery of potable water and the removal of sewage. Pumping fluids is extremely energy intensive.

In addition about half of the 15 million tons of phosphorus exploited each year ends up in the oceans. Much of this flushed down the toilet. The world’s known phosphorus reserves can only supply us for another 30 – 80 years.

Our “modern societies” are almost completely running off large and fast solutions. Small and slow is mostly laughed at, as if they were romantic little dreams with no connection to reality.

Small and slow solutions give people control back over their own lives, and in this way giving them back their dignity. Large and fast solutions are left in the hands of specialised ‘experts’ only, destroying the dignity and responsibility of ordinary people.

I cannot think about anything more packed with small and slow solutions than an earthship. It’s a completely integrated system, ready to meet the collapse of our large and fast solutions – a collapse that is getting closer every day.

The symbol of this principle is a snail, known for its slow speed and small house. More than ever it is time for going to the snail to become wise.

Use Edges and Value the Marginal

Here I’ll just say a little about the last part of this principle – to value the marginal. The word marginal has many meanings. I’ll concentrate on the meaning “not of central importance” for the beauty of the area. This according to pattern 104, site repair:

Conflict

Buildings must always be built on those parts of the land which are in the worst condition, not the best.

Resolution

On no account place buildings in the places which are most beautiful. In fact, do the opposite. Consider the site and its buildings as a single living eco-system. Leave those areas that are the most precious, beautiful, conformable, and healthy as they are, and build new structures in those parts of the site which are least pleasant now.

I hardly think anything has destroyed the beauty of our world more than the violence against this pattern. It’s horrible to see how the rich and privileged people have put their holiday residences and mansions at the most beautiful spots along the Oslo Fjord. And this way they destroy both the beauty of the fjord and the access for ordinary people to these places.

We, the permaculture people, are designated to heal our world. This is why we should pay a special attention to this pattern.

But still I’m just a permaculturist by heart, not by diploma, so please forgive me my limited understanding. I have just started my walk at the evolutionary spiral path of permaculture. How I wish I had been given this path by birth. And please, share the permaculture flower, so that the world can recover. Let us create a new kind of world, a world sustained by real flower power.

Map of fires in Russia

As I type, half of Russia is on fire after its hottest summer on record, Pakistan is dealing with the biggest floods in living memory and Australia is still in the clutches of a decade long drought. The last decade, worldwide, was the hottest since records began, and 2010 may break the records of 1998 and 2005 to become the hottest year we’ve ever known. We could spend weeks just examining the extreme weather events going on on a country by country basis.

Today we are crossing thresholds in our destruction of nature that will make all our subsequent efforts at earth healing even harder than they ever should have been. We have removed eco-systems, and their services, to such an extent that dangerous feedback loops are in progress. Climate is fast becoming a runaway train – and we’re its passengers.

Consider the fires in Russia, for example – millions of rain-producing trees are going up in smoke, taking their carbon with it. Trees growing in the ground are a carbon sink. On fire, they’re a carbon source. The Pakistan floods kill trees and plants likewise. These will later dry out and much of it too will end up in the atmosphere. With less trees in place, flooding events will occur even more often, and the soils these plants held in place will be washed away. The arctic permafrost is melting, releasing the powerful heat trapping gas, methane, at unprecedented levels – promising even more temperature increases. Our oceans are acidifying, threatening to turn the world’s largest carbon sink into a carbon source. And so on….

The dominoes are falling. It’s like nature is shouting to us: "If you don’t appreciate the services of these systems, then I’ll remove them all entirely".

We are facing crises on an unprecedented scale. Atop the foundations of an energy crisis, a climate crisis and a soil, water and biodiversity crisis, rests that mother of all crises – a food crisis. Crops are going up in smoke or are being washed away in deluges, our precious soils with them, while world grain stores are at their lowest levels and production is in decline whilst demand is rising. Such a food crisis, in the context of today’s population levels, translates, in turn, to a social/political/economic crisis on a scale that will make the convulsions of WWII look like a walk in the park.

It’s getting ugly, yet many are still not even awake to the perfect storm that is upon us. And of the few who are, many are discussing light bulbs and hybrids, cap and trade and recycling. They’re discussing being a little ‘less bad’, not recognising the urgent need for us – all 6.8 billion of us (and counting, at a rate of 1 billion every twelve years…) – to immediately become a positive element within our biosphere. And we must move fast! (The proverb ‘a stitch in time saves nine’ really rings true when considering these feedback loops….)

There is a solution though! That being a widespread, collaborative effort to assist nature in restoring, at scale, the biological processes that have, until today, kept this world stable for millennia. The solutions are in design, and in the observation and replication of natural symbiotic systems. We don’t need just less cars, we need more biology – more photosynthesis and more life! We might not be able to have rainforests everywhere, but we can certainly have food forests everywhere! The video clips below share a glimmer of hope along these lines. It documents an incredible journey of restorative transition for a 35,000 square kilometre area in the Leoss Plateau in the north of China. It is a journey that begins with completely eroded, overgrazed land where floods were a constant nightmare, and ends in terraced green hills, flood and food stability and prosperity. And, it only took ten years.

Give it a watch, and, as you do, consider what kind of social/political/economic systems would be the most conducive to achieving similar results in other places worldwide. It’s an interesting mix of top-down ‘interference’ (both in terms of blanket regulations and financial investment) combined with land ‘privatisation’, and participatory involvement at all levels. It reinforces for me the need to build resilient, localised, holistically educated and politically engaged communities whose members don’t discard government, but who through greater involvement in the decision-making process (including choosing their representatives) effectively become government and self-determine to build a world based on land stewardship and voluntary simplicity. We cannot act as individuals alone, working in our own self-interest, and achieve the kind of results you’ll see in the video below. We need to work collaboratively, and sometimes sensible, holistically discussed decisions will need to be enforced on individuals who either can’t see the big picture, or who don’t care.

Further reading:

• The Development of Farmer Managed Natural Regeneration
• The World’s Largest Water Harvesting Earthworks Project
• The Biology of Global Warming

Greenpeace shut down 50 BP flagged petrol station franchises in London in order to apply pressure on the incoming CEO, Bo Diddley, er… I mean Bob Dudley, as his predecessor heads for Siberia. I can’t see him giving a tuppenny shite, personally. He’s got a whole planet to fry and his paradigms ain’t for shifting.

Nice try though.

by Christine Jones, PhD

The number of farmers in Australia has fallen 30 per cent in the last 20 years, with more than 10,000 farming families leaving the agricultural sector in the last five years alone. This decline is ongoing. There is also a reluctance on the part of young people to return to the land, indicative of the poor image and low income-earning potential of current farming practices.

Agricultural debt in Australia has increased from just over $10 billion in 1994 to close to $60 billion in 2009 (Fig.1). The increased debt is not linked to interest rates, which have generally declined over the same period (Burgess 2010).

Fig. 1. Increase in agricultural debt (AUD millions)
1994-2009 vs interest rates (%pa)

The financial viability of the agricultural sector, as well as the health and social wellbeing of individuals, families and businesses in both rural and urban communities, is inexorably linked to the functioning of the land.

There is widespread agreement that the integrity and function of soils, vegetation and waterways in many parts of the Australian landscape have become seriously impaired, resulting in reduced resilience in the face of increasingly challenging climate variability.

Agriculture is the sector most strongly impacted by these changes. It is also the sector with the greatest potential for fundamental redesign.

The most meaningful indicator for the health of the land, and the long-term wealth of a nation, is whether soil is being formed or lost. If soil is being lost, so too is the economic and ecological foundation on which production and conservation are based.

The soil carbon sink

In July 2009, the Portuguese government introduced an AUD$13.8 million soil carbon offsets scheme based on dryland pasture improvement, compliant with Article 3.4 of the Kyoto Protocol.

The scheme will pay an estimated 400 participating farmers to establish biodiverse perennial mixed grass/legume pastures (upwards of 20 species) to improve soil carbon, soil water holding capacity and livestock productivity in an area of approximately 42,000 hectares (Watson, 2010).

The Portuguese scheme has been designed to comply with Kyoto’s strict criteria of additionality and permanence. Coordinator of Project Extensity and Terraprima project leader, Professor Tiago Domingos, has calculated that the area of agricultural land in Portugal amenable to soil carbon offsets could collectively sequester more than the current Portuguese national emissions deficit under existing Kyoto arrangements (Watson 2010).

The mediterranean-type climate of central and southern Portugal is very similar to that in many parts of south-eastern, southern and south-western Australia. The Portuguese Terraprima data illustrated in Fig.2 show that under sown perennial pasture, soil organic matter increased to a level of 3% over 10 years, from a starting point of 0.87%.

Fig. 2. Accumulation of soil organic matter (SOM), shown as percentage
by weight, in soils under three pasture types:
SG = sown perennial pasture;
FNG = fertilised annual pasture;
NG = unfertilised annual pasture
(from Watson 2010).

The Portuguese soil carbon offsets project aims to sequester 0.91 million tonnes of CO2 from 2010 to 2012 (Watson 2010). This equates to the sequestration of 10.85t CO2/ha/yr.

In addition to the carbon payments they receive, participating Portuguese farmers are reported as “enjoying the environmental spin-offs of greater biodiversity, higher soil fertility, higher water infiltration rates, less erosion, less desertification, fewer fires, less floods, improvement in water quality, less dependence on concentrated feed for their herds in protracted dry periods and better milk and meat quality” (Watson 2010).

US study on soil carbon sequestration rates under perennial grassland

Recent research by United States Department of Agriculture (Liebig et al. 2008) investigated soil carbon sequestration under a perennial native grass, switchgrass (Panicum virgatum) grown for the production of cellulosic ethanol.

Despite the annual removal of aboveground biomass, low to medium rainfall and a relatively short growing season, the USDA-ARS research, averaged across 10 sites, recorded average soil carbon sequestration rates of 4t CO2/ha/yr in the 0-30 cm soil profile and 10.6t CO2/ha/yr in the 0-120 cm profile (Liebig et al 2008).

The best performing site was at Bristol, where soil carbon levels increased by 21.67 tonnes in the 0-30 cm soil profile over a 5 year period. A soil carbon increase of 21.67t C/ha equates to the sequestration of 80t CO2/ha.

At the three sites where carbon was measured to 120 cm, the USDA research found relatively high sequestration rates below 30 cm. The sequestration rate was higher for the 30-60 cm increment than for the 0-30 cm increment (18.2t CO2/ha vs 16.5t CO2/ha, respectively). A possible interpretation is that the deeper the sequestration, the greater the likelihood that the carbon be protected from oxidative and/or microbial decomposition.

There were virtually no ‘biomass inputs’ to soil in these trials, as all aboveground material was removed for ethanol production. This suggests the liquid carbon pathway (Jones 2008) as the primary mechanism for soil building.

Carbon trading in the real world

The recent demise of the Federal Government’s proposed Carbon Pollution Reduction Scheme provides an opportunity to reflect on the true meaning of a carbon-based economy.

For some time, analysts have tipped carbon to become the world’s most traded commodity. The reality is that it has been the world’s most traded commodity for millennia.

A great variety of life forms require liquid carbon – referred to in the scientific literature as ‘dissolved organic carbon’ (DOC) – for their growth and reproduction. The growth of trees, crops and pastures, for example, requires the transport of dissolved carbon via sap within the plant; animal growth is dependant on the digestion of carbon containing foods and the transport of dissolved carbon to cells via the blood; the formation of topsoil is dependent on photosynthesis and the transport of dissolved carbon, via a microbial bridge, from plants to soil.

Carbon is the currency for most transactions within and between living things. Nowhere is this more evident than in the soil. Here, carbon is king. Mycorrhizal fungi, which are totally dependant on dissolved organic carbon from green plants, trade carbon with colonies of bacteria located at their hyphal tips in exchange for macro-nutrients such as phosphorus, organic nitrogen and calcium, trace elements such as zinc, boron and copper, and plant growth stimulating substances (Killham 1994, Leake et al. 2004).

By means of an extraordinary physiological process known as ‘bidirectional flow’ nutrients are transported to roots at the same time as dissolved organic carbon moves through fungal hyphae in the opposite direction (Killham 1994, Leake et al. 2004). Indeed, mycorrhizal roots are significant sinks for carbon, transferring as much as 15 times more carbon to soil as adjacent non-mycorrhizal roots (Killham 1994).

Impoverishment of agricultural soils

Mycorrhizal fungi and associative bacteria are very strongly inhibited by excessive soil disturbance and the high levels of water-soluble phosphorus and nitrogen commonly used in modern agriculture (Killham 1994, Leake et al. 2004). Where soils have been subjected to cultivation and/or the application of MAP, DAP, superphosphate, urea or anhydrous ammonia, the suppressed mycorrhizal colonisation of plant roots significantly reduces carbon flow. The structural degradation of agricultural soils, accompanied by mineral depletion in food, has largely been the result of the inhibition of this natural carbon pathway.

When carbon supply is limited by the loss of the primary pathway for sequestration, the physical, chemical and biological functions normally performed by healthy soil are markedly reduced.

Historical levels of soil carbon

Noted Polish explorer and geologist, Sir Paul Edmund [Count] Strzelecki, travelled widely through the colonies of south-eastern Australia during the period 1839 to 1843, collecting minerals, visiting farms and analysing soils. One of the questions Strzelecki posed was, what factors determine soil productivity? He collected 41 soil samples from farmed paddocks of either high or low productivity. The analyses revealed that the most important determinant of soil productivity was the level of soil carbon (measured as organic matter in Strzelecki’s day).

Of the 41 samples analysed, Strzelecki (1845) found …

The top 10 soils in the high productivity group had organic matter levels ranging from 11% to 37.75% (average 20%). The lowest ranking 10 soils in the low productivity group had organic matter levels ranging from 2.2% to 5.0% (average 3.72%)

The soils with the highest organic matter levels also had the highest moisture holding capacity, with an 18-fold difference in capacity to hold moisture between the lowest and the highest (Strzelecki 1845).

Strzelecki’s data indicate that organic matter levels in the early settlement period were around five to ten times higher than in many soils today. The soil test data from Strzelecki is consistent with the writings of first settlers, who described soils in the early settlement period as soft, spongy and absorbent. The 1840s journal of George Augustus Robinson, for example, contains numerous references to the extremely fertile and productive soils encountered by pastoralists in the mid-1800s (Presland 1970).

Soil carbon and soil moisture

In addition to enhancing nutrient availability, carbon performs many other functions in soil, including the maintenance of soil porosity, aeration and water-holding capacity.

Glenn Morris (Morris 2004) extensively researched the water holding capacity of humus (an extremely stable form of soil carbon) and concluded that within the soil matrix, one part of soil humus could, on average, retain a minimum of four parts of soil water.

From this relationship it can be calculated that an increase of 16.8 litres (almost two buckets) of extra plant available water could be stored per square metre in the top 30 cm (12”) of soil with a bulk density of 1.4 g/cm3, for every 1% increase (in absolute terms) in the level of soil organic carbon. This equates to 168,000 litres of water that could be stored per hectare, in addition to the water-holding capacity of the soil itself (Jones 2006).

The flip side is that the same amount of water-holding capacity will be lost when soil carbon levels fall. Low soil moisture and low levels of soil organic carbon go hand in hand.

Soil organic carbon levels in many areas have fallen by at least 3% (in absolute terms) since the time of European settlement, This reduction in soil carbon content represents the LOSS of the ability of soil to store around 504,000 litres of water per hectare.

Mycorrhizas and water

It is well known that mycorrhizal fungi access and transport nutrients in exchange for carbon from the host plant (Killham 1994, Leake et al. 2004). What is less well known is that in seasonally dry, variable, or unpredictable environments (that is, most of Australia), mycorrhizal fungi play an extremely important role in plant-water dynamics.

Mycorrhizal fungi can supply moisture to plants in dry environments by exploring micropores not accessible to plant roots. They can also improve hydraulic conductivity by bridging macropores in dry soils of low water-holding capacity (such as sands). In these situations, external wicking along the hyphae is of greater importance than cytoplasmic flow (Allen 2007). Mycorrhizal fungi can also increase drought resistance by stimulating an increase in the number and depth of plant roots.

Soil carbon and soil nitrogen

Aside from water, nitrogen is frequently the most limiting factor to crop and pasture production. It is one of the great ironies of agriculture that the atmosphere is around 78% nitrogen, but not one single molecule is directly available to plants. There are approximately 78,000 tonnes of nitrogen gas sitting above every hectare of land. Apart from small accessions via lightning, this nitrogen cannot be accessed without a microbial bridge.

Nitrogen-fixing bacteria – be they free-living in the rhizosphere, confined to nodules on plant roots, or existing as endophytes in leaves or stems – derive most of their energy from liquid carbon fixed during photosynthesis.

Adding water-soluble nitrogen in the form of urea, anhydrous ammonia or nitrate destabilises the plant-soil ecosystem by reducing the activity of mycorrhizal fungi and free living N-fixing bacteria (Killham 1994). The presence of high levels of water-soluble nitrogen in soil sends a signal to plants to reduce the supply of liquid carbon to microbial symbionts, effectively inhibiting the microbial associations that would otherwise supply atmospheric nitrogen for free.

This contradicts the widely promoted belief that nitrogenous fertiliser needs to be added in order for stable soil carbon to form. Indeed, the opposite is true (Khan et al. 2007, Larson 2007, Mulvaney et al. 2009).

Soil test data show that as soil carbon levels increase in microbially active soils, availabilities of P, K, S, Ca, Zn and B commonly increase, while levels of nitrate nitrogen are often reduced.

If plants are mycorrhizal, they don’t require nitrogen in a mineralised form, that is, in the form of nitrate or ammonium. In order to transport mineralised nitrogen, mycorrhizal fungi have to convert it to glutamate, which represents an energy cost. For this reason, nitrogen is preferentially transported in an organic form, generally as amino acids such as glycine and glutamine (Leake et al. 2004).

Utilisation of organic nitrogen by mycorrhizal fungi closes the nitrogen loop and prevents soil acidity, as well as preventing volatilisation of nitrogen to the atmosphere and leaching to aquifers, rivers and streams. Changes to soil chemistry and nitrogen dynamics in microbially balanced soils also reduce the abundance of ‘weedy’ species such as annual ryegrass, capeweed, mustard weed and thistles. The germination of these species is stimulated by the ready availability of nitrate nitrogen.

Soil as a methane sink

Wetlands, rivers, oceans, lakes, plants, decaying vegetation (especially in moist environments such as rainforests) – and a wide variety of creatures great and small – from termites to whales, have been producing methane for millions of years. The rumen, for example, evolved as an efficient way of digesting plant material around 90 million years ago.

Ruminants including buffalo, goats, wild sheep, camels, giraffes, reindeer, caribou, antelopes and bison existed in greater numbers prior to the Industrial Revolution than are present today.

There would have been an overwhelming accumulation of methane in the atmosphere had not sources and sinks been able to cancel each other over past millennia.

Although most methane is inactivated by the hydroxyl (OH) free radical in the atmosphere (Quirk 2010), another source of inactivation is oxidisation in biologically active soils. Aerobic soils are net sinks for methane, due to the presence of methanotrophic bacteria, which utilise methane as their sole energy source (Dunfield 2007). Methanotrophs have the opposite function to methanogens, which bind free hydrogen atoms to carbon to reduce acidosis in the rumen.

Recent research undertaken by Professor Mark Adams, Dean of the Faculty of Agriculture at Sydney University, found that one hectare of pasture land could oxidise as much methane as emitted by 162 head of cattle in an entire year (Cawood 2009). The highest methane oxidation rate recorded in soil to date has been 137mg/m2/day (Dunfield 2007) which, over one hectare, equates to the absorption of the methane produced by approximately 1000 head of cattle.

In Australia, it has been widely promoted that livestock are a significant contributor to atmospheric methane and that global methane levels are rising. However, there is no evidence to suggest that methane emissions from ruminant sources are increasing. Indeed, it would seem there has been no clear trend to changes in global methane levels, from any source, over recent decades.

The increase in global methane levels from 1930 to 1970 was due to emissions from the production, transmission and distribution of natural gas (Quirk 2010). There was a tenfold increase in the use of natural gas through the 1960s and 1970s. The source of many of the natural gas emissions, such as leakages from the Trans-Siberian pipeline, have since been rectified (Quirk 2010). Measurements over the last 25 years show concentrations of atmospheric methane are merely exhibiting natural variation, with no significant trends in any direction (Fig.3).

Fig. 3. Variations in annual changes in atmospheric methane concentrations
from 1983 to 2009, from Dlugokencky et al. (2009).
Measurements are in parts per billion per year.

There is therefore no scientific basis for selectively targeting ruminants for a ‘methane tax’, or worse, interfering with this natural process. Farming in ways that enhance, rather than inhibit, soil biological activity, would improve the capacity of agricultural soil to act as a methane sink, helping balance the greenhouse equation. The issue with today’s industrialised approach to agriculture is that methanotrophic bacteria are chemically sensitive. Their activities are reduced by nitrogenous fertilisers, herbicides, pesticides, acidification and excessive soil disturbance (Dunfield 2007).

Soil carbon and human health

The nutritional status of soils, plants, animals and people has fallen dramatically in the last 50 years, due to losses in soil carbon, the key driver for soil nutrient cycles. Soil health and human health are more deeply connected than many people realise. Food is often viewed in terms of quantity available, hence ‘food scarcity’ is not seen as an issue in Australia. However, food produced from depleted soils does not contain the essential trace minerals required for the effective functioning of our immune systems.

Routine premature deaths from degenerative conditions such as cardiovascular disease and cancer have become prominent when they were once relatively uncommon. The cancer rate, for example, has increased from approximately 1 in 100, fifty years ago, to almost 1 in 2 today. The effectiveness of the human immune system has been compromised by increased exposure to more and more chemicals coupled with insufficient mineral density in food.

The low nutritional status of many basic food items is highlighted in data from the UK Ministry of Health. Depletion in the level of minerals in vegetables for the period 1940-1991, for example, shows copper levels reduced by 76%, calcium by 46%, iron by 27%, magnesium by 24% and potassium by 16%. Deficiencies in plants translate through to deficiencies in animals. A piece of steak now contains only half the amount of iron that it would have contained 50 years ago.

Vitamin and mineral deficiencies in food indicate that the symbiotic relationship between plants and soil microbes, whereby minerals are exchanged for liquid carbon, has been disrupted.

The best national health policy would be a national soils policy. But we don’t have one.

Our hospitals are over-filled and our health system is struggling to cope with illnesses that are highly correlated to the lack of essential vitamins, minerals and trace elements in our diet. The availability of these nutrients is determined to a large extent by the integrity of the soil food-web and the microbe bridge, which in turn are dependent on active soil sequestration of dissolved organic carbon.

Food labelling and a ‘Soil Integrity Index’

Food choices can have very significant effects on the kind of food produced and how it is produced. Currently, it is not possible for consumers to choose foods high in minerals, grown on healthy soils, as there is no labelling for food quality.

It is proposed that a ‘Soil Integrity Index’ with index parameters of

1. level of microbial diversity
2. soil carbon content and
3. soil water holding capacity

be used as the basis for a food labelling system.

The labels would need to be simple, with perhaps a star system (as in one, two or three stars). If a food labelling mechanism was in place, Australia’s largely city-based population could use food choices to improve not only the health of their families, but also the function and resilience of agricultural soils, thereby actively participating and supporting biology friendly farming.

The future landscape

The challenge for the future prosperity of Australian agriculture is to convert soil from its current status as a net source of carbon, to a revitalised state as a net carbon sink.

Agricultural research tends to focus on conventionally managed crop and pasture lands where intensive use of agrochemicals has dramatically reduced the number and diversity of soil flora and fauna, including beneficial microbes such as mycorrhizal fungi. As a result, the potential contribution of microbial symbionts to agricultural productivity has been greatly underestimated (Allen 2007).

Building soil carbon does not require adding biomass to soil. While crop stubbles and mulch are important for protecting soil from wind and water erosion and buffering temperature extremes, their contribution to soil carbon is limited by eventual decomposition to CO2.

The first step to restoring soil function is ‘do no harm’. A simple change from high-analysis N and/or P fertilisers to biological products such as worm leachate (vermiliquid), compost extract, seaweed extract and/or fish emulsion, applied as a seed dressing and/or a post-emergent foliar spray, will support microbial diversity, increase plant photosynthetic rate, increase the flow of liquid carbon to soil and enhance humification.

As the soil chemistry adjusts and nitrogen is converted to an organic form (freely available to mycorrhizal fungi but not to annual weeds) the incidence of pests, weeds and diseases that are stimulated by low levels of microbial diversity and high rates of water soluble nitrogen, will decline. As a result, there will be less reliance on the use of pesticides and herbicides that reduce the ability of soil to act as a sink for carbon, nitrogen, methane and moisture.

Changing the face of agriculture

Since 1960, global food production has doubled. At the same time, the soil resource on which food production is based has become seriously degraded.

The impoverishment of agricultural soils through depleted levels of biological activity and reduced carbon flow poses a greater threat to human existence than climate change.

In many regions of Australia, the effects of lower than average rainfall over the past decade have been compounded by loss of soil resilience and reduced moisture-holding capacity (Fig.4).

Fig. 4. Cropping over an old fence-line clearly demonstrates the extent to
which soil has been depleted by conventional farming practices. Paddocks
on either side of the fence have a history of high nitrogenapplication
(Photo Richard May).

It has been calculated that in the next 50 years, the planet will need to produce as much food as it has in the entire history of humankind. The way we produce that food will require a radical departure from business as usual.

At the beginning of this paper it was noted that the level of agricultural debt in Australia had increased almost 6-fold over the last 15 years. The amount of money invested by the farming community on non-biological inputs increases every year. Many of these products inhibit microbial diversity, preventing natural carbon flow to soils. Cessation of carbon flow reduces soil integrity, the mineral density in food and human health. It also prevents the processes of humification and topsoil formation from operating to any significant extent. The end result is even greater expenditure on agrochemicals in attempts to control the pest, weed, disease and fertility problems’ that ensue.

The statement that small farmers need to ‘get big or get out’ overlooks the fact that profit is the difference between expenditure and income. In years to come we will perhaps wonder why it took so long to realise the futility of trying to grow crops in dysfunctional soils, relying solely on increasingly expensive synthetic inputs.

Economic development is only sustainable if it strengthens, rather than depletes, natural resources.

The soil’s ability to produce nutrient dense, high vitality food – which after all, is agriculture’s real purpose – depends on appropriate management. Enhancing the natural flow of carbon to soils will result in increased microbial diversity, improved nutrient cycles, enhanced soil water-holding capacity, greater resilience, improved catchment health – and a more satisfying, profitable future for farmers.

The longer we delay undertaking regenerative changes to land management based on biology friendly farming practices that rebuild carbon-rich soils, the more soil carbon and soil water will be lost, exposing an increasingly fragile agricultural sector to escalating production risks, rising input costs and vulnerability to climatic extremes.

Its time to move away from depletion-style, high emission, chemically based industrial agriculture and get serious about grass-roots biologically based alternatives.

The future of Australia depends on the future of our soil – and our willingness to look after it.

Rebuilding soil productivity via the restoration of natural carbon flow and the sequestration of stable soil carbon is the only means of saving agriculture’s bacon – and ensuring a future for human society as we know it.

Literature cited

• Allen, M.F (2007). ‘Mycorrhizal fungi: highways for water and nutrients in arid soils’. Soil Science Society of America, Vadose Zone Journal. Vol 6 (2) pp. 291-297. DOI:10.2136/vzj2006.0068.
• Burgess, N. (2010). Agricultural debt from 1994 to 2009. Sourced from Westpac Economics& Reserve Bank of Australia. nburgess@westpac.com.au
• Cawood, M. (2009). ETS lifeline: soils capable of absorbing cattle methane. The Land, 3 September 2009.
• Dlugokencky, E. J. et al. (2009). Observational constraints on recent increases in the atmospheric CH4 burden. Geophysical Research Letters. 36, L18803, DOI:10.1029/2009GL039780.
• Dunfield, P. F. (2007). The soil methane sink. In D.S. Reay, C.N. Hewitt, K.A Smith and J. Grace, eds. Greenhouse Gas Sinks. pp. 152-170. Wallingford UK.
• Jones, C. E. (2006). Carbon and catchments. National ‘Managing the Carbon Cycle’ Forum, Queanbeyan, NSW, 22-23 November 2006. http://www.amazingcarbon.com
• Jones, C.E. (2008). Liquid carbon pathway unrecognised. Australian Farm Journal, July 2008, pp. 15-17. http://www.amazingcarbon.com
• Khan, S.A, Mulvaney, R.L, Ellsworth, T.R. and Boast, C.W. (2007). The myth of nitrogen fertilization for soil carbon sequestration. Journal of Environmental Quality 36:1821-1832. DOI:10.2134/jeq2007.0099
• Killham, K. (1994). ‘Soil Ecology’. Cambridge University Press.
• Larson, D. L (2007). Study reveals that nitrogen fertilizers deplete soil organic carbon. University of Illinois news, October 29, 2007. http://www.aces.uiuc.edu/news/internal/preview.cfm?NID=4185
• Leake, J.R., Johnson, D., Donnelly, D.P., Muckle, G.E., Boddy, L. and Read, D.J. (2004). Networks of power and influence: the role of mycorrhizal mycelium in controlling plant communities and agroecosystem functioning. Canadian Journal of Botany, 82: 1016-1045. DOI:10.1139/B04-060
• Liebig, M.A, Schmer, M.R, Vogel, K.P. and Mitchell. R.B. (2008). Soil carbon storage by switchgrass grown for bioenergy. Bioenergy Research 1: 215-222. DOI:10.1007/s12155-008-9019-5
• Morris G. D. (2004). Sustaining national water supplies by understanding the dynamic capacity that humus has to increase soil water-holding capacity. Thesis submitted for Master of Sustainable Agriculture, University of Sydney, July 2004.
• Mulvaney, R.L, Khan S.A, and Ellsworth, T.R. (2009). Synthetic nitrogen fertilizers deplete soil nitrogen: a global dilemma for sustainable cereal production. Journal of Environmental Quality 38:2295-2314. DOI:10.2134/jeq2008.0527
• Quirk T. W. (2010). Twentieth century sources of methane in the atmosphere. Energy and Environment, 21(3), pp. 251-256.
• Strzelecki, Paul Edmund de, (1845). Physical description of New South Wales and Van Diemen’s Land: accompanied by a geological map, sections and diagrams, and figures of the organic remains / by P.E. de Strzelecki. Printed for Longman, Brown, Green, and Longmans, London. (Note: prior to 1851 the state of Victoria was part of the colony of New South Wales).
• Watson, L. (2010). Portugal gives green light to pasture carbon farming as a recognised offset. Australian Farm Journal, January 2010, pp. 44-47.

What: Queensland Southen Beaches Community Gardens Open Day and Working Bee
When: Saturday 31 July 2010, from 1pm (Sausage sizzle from 3pm, finish by 4pm)
Where: Tugun Community Centre (Please bring own gardening tools.)

During my internship (at the Permaculture Research Institute Aus) I had the privilege of getting involved with some dedicated community minded people. I met Margot James, a focused, determined lady on a mission to set the ball rolling on a project called Southern Beaches Community Gardens. It was named this for a very good reason. The Southern beaches take in a handful of suburbs from the Queensland Border up the coast approximately 12km to Palm Beach. So this has set the framework for not just one garden, but a network of gardens and has started cementing some form of future food security for the southern Gold Coast.

I’m a part of the steering committee whose main focus is to ensure that members of the garden group are supported in their activities as the garden develops, and to promote the principles of Permaculture design science to the Southern Gold Coast. On a personal level I want the Gold Coast to live and breathe Permaculture. The Gold Coast is the second largest city in Queensland with around 600,000 residents. It’s also the sixth most populous city in Australia.

I need the help of closet Permaculturalists – who I’d ask to dust off their design manuals and come and help push the Permaculture barrow and make this a world class demonstration community garden in our backyard and set the bench mark for all community gardens in the Gold Coast City.

And with all of the hard work of the committee now paying off we are ready to start DIGGING!!!

A massive thank you goes to Gold Coast division 14 councilor Chris Robbins for her support and the substantial funding of $30,000 for 2010. Thanks also to all of our sponsors and especially the Tugun Community Bank who have started their sponsorship of the garden with $1,000. Their support will be ongoing over the years and we will be supporting the bank in any way we can. Local partnerships are very important to the community garden and we would love to hear from any individuals, groups, government departments or businesses that would like to be involved.

So on Saturday 31 July from 1pm we will be holding our official opening and inaugural working bee.

On that day we will be planting a variety of fruit and nut trees donated by the Gold Coast City Council as well as 50 other beneficial nursery and nitrogen fixing species donated by local native nursery Gecko Regen. A “no dig” garden will be work-shopped and also a composting workshop held by Permaculture practitioners.

Imagine the possibilities…

This is very early stages so we would appreciate that everyone bring gardening tools that may be of use on the day (i.e. shovels, wheelbarrows, etc.), as we don’t have a supply of tools at this time. Also, we want this garden to run in as much of a recycling way as possible, so if you have anything you don’t need any more – hold on to them until we have a shed that we can store them in.

We have set up a Facebook page, so please feel free to visit us at Southern Beaches Community Garden and invite your friends to become members as well. We will be posting all future workshops and social events here as well as sending out the usual emails.

The lawn is just itching to be liberated

Over the next month or two we will be holding regular workshops on various subjects to help us all bond together and help us all become educated in the many facets of gardening.

Looking forward to seeing you all then!

P.S. I’m also calling anyone with specific skills – e.g. composting, tree planting, Permaculture, or no dig gardening – to please contact me on the details below. We would like to empower people within the community to share their skills with all of us.

Nick Huggins
e: hugginsn (at) bigpond.net.au
p: 0417 010 965

The podcast is well worth a listen. Click play below:

I love to see people joining the dots like this!

Should you be in the area, Terry and others will be speaking at a three-day conference in Brisbane, titled ‘Farmers – Heroes of our Future‘ from July 20-22. You can view the conference program here. Given it’s July 20th as I type, it may be too late to register and go along, but if you’re in the Brisbane area I’ll leave you to make your own enquiries if you’re interested. Sounds like it’d be a great event to attend.

The bicycle has many attractions as a form of personal transportation. It alleviates congestion, lowers air pollution, reduces obesity, increases physical fitness, does not emit climate-disrupting carbon dioxide, and is priced within the reach of the billions of people who cannot afford a car. Bicycles increase mobility while reducing congestion and the area of land paved over. Six bicycles can typically fit into the road space used by one car. For parking, the advantage is even greater, with 20 bicycles occupying the space required to park a car.

Few methods of reducing carbon emissions are as effective as substituting a bicycle for a car on short trips. A bicycle is a marvel of engineering efficiency, one where an investment in 22 pounds of metal and rubber boosts the efficiency of individual mobility by a factor of three. On my bike I estimate that I get easily 7 miles per potato. An automobile, which requires at least a ton of material to transport one person, is extraordinarily inefficient by comparison.

The bicycle is not only a flexible means of transportation; it is ideal in restoring a balance between caloric intake and expenditure. Regular exercise of the sort provided by cycling to work reduces cardiovascular disease, osteoporosis, and arthritis, and it strengthens the immune system.

World bicycle production, averaging 94 million per year from 1990 to 2002, climbed to 130 million in 2007, far outstripping automobile production of 70 million. Bicycle sales in some markets are surging as governments devise a myriad of incentives to encourage bicycle use. For example, in 2009 the Italian government began a hefty incentive program to encourage the purchase of bicycles or electric bikes in order to improve urban air quality and reduce the number of cars on the road. The direct payments will cover up to 30 percent of the cost of the bicycle.

China, with 430 million bikes, has the world’s largest fleet, but ownership rates are higher in Europe. The Netherlands has more than one bike per person, while Denmark and Germany have just under one bike per person.

China dramatically demonstrated the capacity of the bicycle to provide mobility for low-income populations. In 1976, this country produced 6 million bicycles. After the reforms in 1978 that led to an open market economy and rapidly rising incomes, bicycle production started climbing, reaching nearly 90 million in 2007. The surge to 430 million bicycle owners in China has provided the greatest increase in mobility in history. Bicycles took over rural roads and city streets. Although China’s rapidly multiplying passenger cars and the urban congestion they cause get a lot of attention, it is bicycles that provide personal mobility for hundreds of millions of Chinese.

Ripon College in Wisconsin and the University of New England in Maine have gone even further. Rather than build new automobile infrastructure, they find it cheaper to give each incoming freshman a bike if they agree to leave their cars at home. Replacing cars with bikes on campus is reducing air pollution and traffic congestion while creating a sense of community.

Among the industrial-country leaders in designing bicycle-friendly transport systems are the Netherlands, where 27 percent of all trips are by bike, Denmark with 18 percent, and Germany, 10 percent. By contrast, the United States and the United Kingdom are each at 1 percent.

An excellent study by John Pucher and Ralph Buehler at Rutgers University analyzed the reasons for these wide disparities among countries. They note that "extensive cycling rights-of-way in the Netherlands, Denmark, and Germany are complemented by ample bike parking, full integration with public transport, comprehensive traffic education and training of both cyclists and motorists." These countries, they point out, "make driving expensive as well as inconvenient in central cities through a host of taxes and restrictions on car ownership, use and parking. It is the coordinated implementation of this multi-faceted, mutually reinforcing set of policies that best explains the success of these three countries in promoting cycling." And it is the lack of these policies, they note, that explains "the marginal status of cycling in the UK and USA."

Fortunately, many Americans are working to change this. Prominent among them is Congressman Earl Blumenauer of Oregon. An avid cyclist, he is the founder and coordinator of the 220-member Congressional Bike Caucus.

Nearly 75 percent of U.S. police departments serving populations of 50,000 or more now have routine patrols by bicycle. Officers on bikes are more productive in cities partly because they are more mobile and can reach the scene of an accident or crime more quickly and more quietly than officers in cars. They typically make 50 percent more arrests per day than officers in squad cars. Fiscally, the cost of operating a bicycle is trivial compared with that of a police car.

Colleges and universities are also turning to bicycles. As campuses are overwhelmed by cars, traffic congestion, and the need to build more residential facilities, they are being forced to take innovative measures to discourage cars. Chicago’s St. Xavier University launched a bike-sharing program in the fall of 2008, in which students use their ID cards to rent bikes. Emory University in Atlanta, Georgia, has introduced a free bike-sharing system, also based on ID cards.

Back at the national level, the Netherlands, the unquestioned leader among industrial countries in encouraging bicycle use, has incorporated a vision of the role of bicycles into a Bicycle Master Plan. In addition to creating bike lanes and trails in all its cities, the system also often gives cyclists the advantage over motorists in right-of-way and at traffic lights. Some traffic signals permit cyclists to move out before cars. By 2007, Amsterdam had become the first western industrial city where the number of trips taken by bicycle exceeded those taken by car.

Within the Netherlands, a nongovernmental group called Interface for Cycling Expertise (I-ce) has been formed to share the Dutch experience in designing a modern transport system that prominently features bicycles. It is working with groups in Botswana, Brazil, Chile, Colombia, Ecuador, Ghana, India, Kenya, Peru, South Africa, and Uganda to facilitate bicycle use. Roelof Wittink, head of I-ce, observes: "If you plan only for cars then drivers will feel like the King of the Road. This reinforces the attitude that the bicycle is backward and used only by the poor. But if you plan for bicycles it changes the public attitude."

Both the Netherlands and Japan have made a concerted effort to integrate bicycles and rail commuter services by providing bicycle parking at rail stations, making it easier for cyclists to commute by train. In Japan, the use of bicycles for commuting to rail transportation has reached the point where some stations have invested in vertical, multi-level parking garages for bicycles, much as is often done for automobiles.

Sales of electric bicycles, a relatively new genre of transport vehicles, also have taken off. E-bikes are similar to plug-in hybrid cars in that they are powered by two sources—in this case muscle and battery power—and can be plugged into the grid for recharging as needed. Sales in China, where this technology came into its own, climbed from 40,000 e-bikes in 1998 to 21 million in 2008. China had close to 100 million electric bicycles on the road that year, compared with 18 million cars. These e-bikes are now attracting attention in other Asian countries similarly plagued with air pollution and in the United States and Europe, where combined sales now exceed 300,000 per year.

In contrast to plug-in hybrid cars, electric bikes do not directly use any fossil fuel. If we can make the transition from coal-fired power plants to wind, solar, and geothermal power, then electrically powered bicycles can also operate fossil-fuel-free.

Above all, the key to realizing the potential of the bicycle is to create bicycle-friendly transport systems. This means providing bicycle trails and designated street lanes for bicycles, designed to serve both commuters and people biking for recreation, and making bike parking facilities and showers available at workplaces. This simple bicycle is a winner in the Plan B economy.

~~~~~~~~~~

Adapted from Chapter 6, "Designing Cities for People" in Lester R. Brown, Plan B 4.0: Mobilizing to Save Civilization (New York: W.W. Norton & Company, 2009), available on-line at www.earthpolicy.org/index.php?/books/pb4