Carbon dioxide emission, organic agriculture

Carbon dioxide emissions from the agricultural sector in OECD countries are estimated at less than 1% of overall COj emissions (IPCC 2001). Net emissions of CO, from agriculture depend upon the direct and indirect use of fossil fuels, and on the amount of carbon sequestration in soil organic matter and crop growth (Shepherd et al. 2003). 

Globally, extensive areas of peatlands and wetlands have been drained and converted into agricultural lands. Drainage of organic matter-rich soils accelerated the decomposition process and emission of carbon dioxide. Many peatlands that have accumulated organic matter for centuries... 

Air pollution occurs when the concentration of natural and/or man-made substances in the atmosphere becomes excessive and the air becomes toxic. Emissions from transportation, industry, and agriculture are man-made sources of air pollution. Primary pollutants are gases, liquids, and particulates dispersed into the atmosphere through either man-made or natural processes. In the United States, the primary pollutants are carbon monoxide, sulfur dioxide, nitrogen oxides, volatile organic compounds (VOCs), and particulate matter (soot, dust, etc.). Secondary pollutants are derived from primary pollutants that undergo a chemical reaction and become a different type of toxic material. In the United States, secondary pollutants are ozone, photochemical smog, and acid rain. 

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