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Environmental Stress and Grain Yields in China
Jikun Huang and Scott Rozelle
American Journal of Agricultural Economics
Vol. 77, No. 4 (Nov., 1995), pp. 853-864
Stable URL: http://www.jstor.org/stable/1243808
Page Count: 12
You can always find the topics here!Topics: Grains, Agricultural land, Water erosion, Fertilizers, Sustainable agriculture, Irrigation systems, Land use, Irrigation, Soil salinization, Crops
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After 1984 China's grain production began to stagnate, slowing during a time of continuing expansion of chemical inputs, irrigated area, and high-yielding rice, wheat, and maize varieties. In this paper we explore the hypothesis that the accumulation of environmental pressures, including erosion, salinization, soil exhaustion, and degradation of the local environment, may be partially responsible for the recent slowdown of grain yields. Using provincial production data from 1975 to 1990, the analysis shows that environmental factors, especially the breakdown of the environment, did contribute to the decline in the rate of increase of yields in China during the late 1980s. Erosion and salinization had a small, negative effect on yields.
American Journal of Agricultural Economics © 1995 Agricultural & Applied Economics Association