| Erosion: Dustup
over Muddy Waters
Data back to the
1930s show that erosion has declined markedly in one of the best-studied
agricultural watersheds in the United States.
References:
Pimentel, D., et
al. 1995. Environmental and economic costs of soil erosion and
conservation benefits. Science 267(Feb. 24):1117.
Trimble, S.W.
1999. Decreased rates of alluvial sediment storage in the Coon Creek
Basin, Wisconsin, 1975-93. Science 285(Aug. 20):1244.
Further Readings:
Uri, N.D., and J.A.
Lewis. 1999. Agriculture and the dynamics of soil erosion in the United
States. Journal of Sustainable Agriculture 14(Feb. 3):63.
Sources:
David Pimentel
Cornell University
College of Agriculture and Life Sciences
5126 Comstock Hall
Ithaca, NY 14853-0901
Stanley W.
Trimble
University of California, Los Angeles
Department of Geography
Institute of the Environment
1255 Bunche Hall
Los Angeles, CA 90095-1524
From Science
News, Vol. 156, No. 8, August 21, 1999, p. 116. Copyright © 1999,
Science Service. |