Ecosystems

, Volume 1, Issue 5, pp 416–426

Ecology of Soil Erosion in Ecosystems

  • David  Pimentel
  • Nadia  Kounang

ABSTRACT

Each year, about 75 billion tons of soil are eroded from the world's terrestrial ecosystems. Most agricultural land in the world is losing soil at rates ranging from 13 tons/ha/year to 40 tons/ha/year. Because soil is formed very slowly, this means that soil is being lost 13–40 times faster than the rate of renewal and sustainability. Rain and wind energy are the two prime causes of erosion from tilled or bare land. Erosion occurs when the soil lacks protective vegetative cover. Soil erosion reduces the productivity of the land by loss of water, soil organic matter, nutrients, biota, and depth of soil. The greatest threat to providing food for a rapidly growing human population is soil erosion. Abandoned, eroded agricultural land is replaced by clearing forested ecosystems.

Key words: soil; erosion; food; agriculture; nutrients; water. 

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Copyright information

© Springer-Verlag New York Inc. 1998

Authors and Affiliations

  • David  Pimentel
    • 1
  • Nadia  Kounang
    • 1
  1. 1.College of Agriculture and Life Sciences, Cornell University, 5126 Comstock Hall, Ithaca, New York 14853-0901, USA US

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