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Agriculturally Induced Vegetation Change, 1950-1975

Katharine C. Prentice and Jerry C. Coiner
Human Ecology
Vol. 8, No. 2 (Jun., 1980), pp. 105-116
Published by: Springer
Stable URL: http://www.jstor.org/stable/4602546
Page Count: 12
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Agriculturally Induced Vegetation Change, 1950-1975
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Abstract

Changes in worldwide grain production area are analyzed to assess the impact of major agricultural activity on global biomass. During the 26-year study period, nearly 1% of the earth's ice-free land surface was converted to grain production. This increase in agricultural area reduced the planetary biomass; however, it had minimal effect on net primary productivity. Geographically, the overall change caused by increased grain production has been to redistribute the planetary biomass poleward.

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