[1]CHENG Ai-fang,ZHAO Jing-bo.Evaluation of Grain Security Affected by Cultivated Land Change in Weinan City[J].Research of Soil and Water Conservation,2009,16(06):189-193.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 06
Page number:
189-193
Column:
Public date:
2009-12-20
- Title:
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Evaluation of Grain Security Affected by Cultivated Land Change in Weinan City
- Author(s):
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CHENG Ai-fang1, ZHAO Jing-bo1,2
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1. College of Turism and Environment, Shaanxi Normal University, Xi’an 710062, China;
2. State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS, Xi’an 710075, China
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- Keywords:
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cultivated land change; grain security; cultivated land; pressure index; Weinan city
- CLC:
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F301.21
- DOI:
-
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- Abstract:
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The article evaluated the state of grain security based on quantitive change of cultivated land, using the models of per captia minimum area of cultivated land and cultivated land pressure index in Weinan city from 1990 to 2006.The results are as follows: the quantitive change of cultivated land experienced three stages, decreased year by year, fluctuated change and near stable state; the regional differences of cultivated land change is’t obvious; the per capita cultivated land area stay at high level in Shaanxi province; the grain security will goes well unless the crop undergo such natural disasters as drought, flood, illness and so on. The grain security have apparent regional diversities; there won’t any threaten of grain security in Weinan city during next eight years.The results will offer a scientific basement to solve the conflict between cultivated land use and grain security in Weinan city.