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Impact of Prairie Age and Soil Order on Carbon and Nitrogen Sequestration

Center for Sustainability and the Global Environment, The Nelson Inst. for Environmental Studies, Univ. of Wisconsin, Madison, WI 53726

View larger version (67K): [in this window] [in a new window]   Fig. 1. Location of study region and 39 paired CRP–cropland soil sampling sites (denoted by dark circles) in southern Wisconsin.

View larger version (19K): [in this window] [in a new window]   Fig. 2. Changes in (a) soil organic C (SOC) sequestration rate in the 0- to 5-cm layer and (b) soil bulk density at 0 to 10 cm as a function of years since last disturbance for Conservation Reserve Program prairies planted on Alfisols and Mollisols. The center line is the result of the linear regression, and the outside bounding lines represent the 95% confidence interval.