Euliss Ned H, Gleason R A, Olness A, McDougal R L, Murkin H R, Robarts R D, Bourbonniere R A, Warner B G
U.S. Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND 58401-7317, USA.
Sci Total Environ. 2006 May 15;361(1-3):179-88. doi: 10.1016/j.scitotenv.2005.06.007. Epub 2005 Aug 29.
We evaluated the potential of prairie wetlands in North America as carbon sinks. Agricultural conversion has resulted in the average loss of 10.1 Mg ha(-1) of soil organic carbon on over 16 million ha of wetlands in this region. Wetland restoration has potential to sequester 378 Tg of organic carbon over a 10-year period. Wetlands can sequester over twice the organic carbon as no-till cropland on only about 17% of the total land area in the region. We estimate that wetland restoration has potential to offset 2.4% of the annual fossil CO(2) emission reported for North America in 1990.
我们评估了北美草原湿地作为碳汇的潜力。农业开垦已导致该地区超过1600万公顷湿地的土壤有机碳平均损失10.1公吨/公顷。湿地恢复在10年期间有潜力封存378太克有机碳。湿地仅占该地区陆地总面积的约17%，但其封存的有机碳量是免耕农田的两倍多。我们估计，湿地恢复有潜力抵消1990年北美报告的年度化石二氧化碳排放量的2.4%。
