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| Sojka, R.E.; Entry, J.A.; Shewmaker, G.E.; Fuhrmann, J.J.. |
| Fossil fuel burning at the present rate, will double atmospheric carbon dioxide (CO 2 ) in this century, raising air temperature 1.5 to 5 °C. Sequestering carbon (C) in soil can reduce atmospheric CO2 concentration. We measured inorganic and organic C in southern Idaho soils having long term land use histories of native sagebrush vegetation (NSB), irrigated moldboard plowed crops (IMP), irrigated conservation- (chisel) tilled crops (ICT) and irrigated pasture systems (IP). Soil Organic C (SOC) decreased in the order IP>ICT>NSB>IMP. We used our findings to estimate potential amounts of organic C sequestered if irrigated agriculture expanded. If irrigated agricultural land was expanded by10°/0 worldwide and NSB was converted to ICT, 2.5 x 10... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Mass Import - unclassified. |
| Ano: 2007 |
URL: http://eprints.nwisrl.ars.usda.gov/857/1/1225.pdf |
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