Science Forums 2

[Michaelangelica]

Professor gumnut and the AustralianLabor governemt seem to be ignoring farmers on this issue in their carbon credits scheme proposals.
That is a lot of seats/votes to throw away!

Should organic farmers get 'carbon credits'?

A further goal of the partnership between The Rodale Institute, the PA Department of Agriculture and the PA Department of Environmental Protection is to explore policy mechanisms by which farmers and landowners could quantify the carbon sequestered on their properties and receive a payment from the state or federal government for ecosystem services provided, or even participate in emerging 'carbon-trading' markets around the world. Although the development of carbon-trading markets in the US was put on hold by the Bush administration's decision, in 2001, to pull out of the Kyoto Protocol (citing projected deleterious effects on the struggling US economy), such markets are rapidly expanding in the European Union and elsewhere. (See, for example, co2e.com, a greenhouse gas brokerage firm based in London.)

"The Kyoto Protocol [the 1997 global agreement to reduce greenhouse gases] talks about agriculture and forestry as carbon sinks, but fails to distinguish between the different effects of different types of agriculture," notes Daniel Desmond of the PA Department of Environmental Protection. In fact, the whole business of credit for carbon-sequestration activities under the Kyoto accord is problematic, because of the lack in 1997 of good carbon inventory data that could be factored into the nation-by-nation emissions-reduction targets.

Nevertheless, although sequestration in agricultural soils can vary by climate and by soil type, multiplying 3,670 pounds of captured CO2 per acre across the 160 million acres planted to corn and soybeans in the US yields a potential CO2 capture on the order of 293 million tons per year, or as much as three-quarters of the reductions required if the US were to adhere to its Kyoto targets. (Total U.S. cropland is 431 million acres.)

Organic farming -vs- the Kyoto targets

In 1997 the U.S. agreed to reduce 1990 levels of CO2 by seven percent. So here's a question: How far would converting U.S. cropland to organic take us toward satisfying those Kyoto goals? Let's do the math:

Converting 160 million acres of corn
and soyean to organic results in
293 million tons of CO2 stored in soil

Kyoto target:
400 million ton reduction in CO2

Percentage of Kyoto goal that would be
satisfied by converting to organic:
73 PERCENT!

NOTE: This doesn't even take into consideration the drastically reduced energy expenditure and CO2 emissions of organic farming compared with using chemical fertilizers.

Thinking globally, the British Royal Society has estimated potential CO2 sequestration on the world's 2.5 billion acres of agricultural soils at 6.1 to 10.1 billion U.S. tons per year for the next 50 years. Another estimate puts the total amount of CO2 that could be captured in developing countries at 1.7 billion U.S. tons over the next decade. In short, carbon sequestration via adoption of organic agriculture could have a substantial impact on global warming.

Still, carbon sequestration by organic farming, like carbon capture through reforestation, is a short-term or 'bridge' solution, a way of buying time for more fundamental changes. Ultimately, global climate change can only be fully addressed through rationalization of energy policies, reductions in fossil fuel consumption, and improvements in emissions-control technologies. Among the possible short- to medium-term solutions, however, organic farming has a lot going for it. "There are a number of 'Star Wars'-like solutions being proposed" for carbon and carbon dioxide capture, observes Hepperly, including pumping CO2 deep into the ocean or underground--in July of this year the US Department of Energy announced that drilling had begun on a 10,000-ft 'well' to funnel CO2 deep beneath West Virginia.

Compared to expensive, experimental, high-technology projects like these, global transitioning to organic farming looks cheap and easy. "It's a no-brainer," Hepperly concludes. "Organic farming is not a technological fix, not an untried experiment that could have its own unforeseen consequences." Instead, it's a step toward solving global warming that brings with it a wealth of other environmental benefits.

New Farm Field Trials: Organic farming combats global warming