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Science. 1995 Feb 24;267(5201):1117-23.

Environmental and economic costs of soil erosion and conservation benefits.

Abstract

Soil erosion is a major environmental threat to the sustainability and productive capacity of agriculture. During the last 40 years, nearly one-third of the world's arable land has been lost by erosion and continues to be lost at a rate of more than 10 million hectares per year. With the addition of a quarter of a million people each day, the world population's food demand is increasing at a time when per capita food productivity is beginning to decline.

PMID:
17789193
[PubMed]
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