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Special Articles

Agricultural Intensification and Ecosystem Properties

Science
25 Jul 1997
Vol 277, Issue 5325
pp. 504-509

Abstract

Expansion and intensification of cultivation are among the predominant global changes of this century. Intensification of agriculture by use of high-yielding crop varieties, fertilization, irrigation, and pesticides has contributed substantially to the tremendous increases in food production over the past 50 years. Land conversion and intensification, however, also alter the biotic interactions and patterns of resource availability in ecosystems and can have serious local, regional, and global environmental consequences. The use of ecologically based management strategies can increase the sustainability of agricultural production while reducing off-site consequences.

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We thank P. Vitousek, R. Naylor, R. Kelly, and G. Daily for extended discussions on these topics, G. P. Robertson and two anonymous reviewers for thoughtful reviews of earlier drafts, and K. McElwain and B. Techau for assistance with manuscript preparation. Partially supported by grants to W.J.P. (NASA-NAGW-2662, NSF-BSR-9011659, NIH-1-R01-HD33554, and EPA-R824993-01-0), P.A.M. (NASA-NAGW-3869 and USDA-94-37101-0437), and A.G.P. (NSF-9407919 and USDA-95-33120-1877).

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Published In

Science
Volume 277 | Issue 5325
25 July 1997

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Published in print: 25 July 1997

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Authors

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P. A. Matson, Ecosystem Sciences Division, Department of Environmental Science, Policy and Management, University of California, Berkeley, CA 94720–3110, USA.
W. J. Parton, Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO 80523, USA.
A. G. Power, Section of Ecology and Systematics, Cornell University, Ithaca, NY 14853, USA.
M. J. Swift, Tropical Soil Biology and Fertility Programme, c/o UNESCO/ROSTA, Post Office Box 30592, Nairobi, Kenya.

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