Earth tones-- : the book : federal science for sustainable development earthtonesbookfe00cana Year: 2000 (^&^rt mm » Climate Change Soil sinks: C02 reservoirs Agriculture and Agri-Food Canada Natural Resources Canada nations around the world can use a powerful tool to combat climate change, and it's right under our feet. Soils can absorb atmospheric carbonâwhich is linked to global warmingâwith the help of plants. Through photosynthesis, plants convert carbon dioxide (C02) into organic forms of carbon that they deposit in the soil through their roots and residue. With sound land manageme
Earth tones-- : the book : federal science for sustainable development earthtonesbookfe00cana Year: 2000 (^&^rt mm » Climate Change Soil sinks: C02 reservoirs Agriculture and Agri-Food Canada Natural Resources Canada nations around the world can use a powerful tool to combat climate change, and it's right under our feet. Soils can absorb atmospheric carbonâwhich is linked to global warmingâwith the help of plants. Through photosynthesis, plants convert carbon dioxide (C02) into organic forms of carbon that they deposit in the soil through their roots and residue. With sound land management, these soil carbon sinks can keep C02 out of the atmosphere. Conversely, the conversion of grasslands and forests to agricultural and grazing land, unsustainable land practices and the tilling of soil can result in a net release of C02 into the atmosphere, and can create a carbon deficit in soil. Models can estimate the carbon change related to farm management practices with a fair degree of accuracy using data on soil carbon, landscape and climate. A scientifically credible and cost- effective way of measuring, monitoring and verifying carbon changes in soils is in development. Researchers predict that world soils have the potential to absorb 20 to 30 gigatonnes of carbon during the next 50 to 100 years. That's equal to five times the world's fossil fuel emissions for 1990. The role of northern forests in sequestering and releasing C02 is also being studied by scientists at the Canadian Forest Service. ( 14 ) â
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