水土保持研究2011，Vol.18Issue(6)：226-230,235,6.
退耕还林（草）背景下延安市粮食安全态势评析
Analysis on Grain Security Trend of Yan＇an City in the Scenario of Grain for Green Project
摘要
Abstract
Grain production and grain security problem have greatly affected the persistency and stability of Grain for Green Project of Yan＇an City.The paper uses minimum cropland area per capita and cropland pressure index model as a means to analyze the security state of Yan＇an＇s grain production from 1997 to 2007 based on the data of cropland area,grain production,population size,etc.The result shows that the cropland pressure index is low,the minimum per-capita cropland area is small,the pressure of grain production is low,the cropland productivity is high in the counties from the south of Baota District of Yan＇an city in terms of the special scale.The cropland pressure index and the minimum cropland area are going up from 1998 to 2003 while they are going down since 2003 in terms of the temporal scale.In the recent years,the cropland pressure index is a little greater than 1.The pressure of cropland area and the problem of grain supply have been resolved better and better.But the grain security problem still exists.Therefore,Yan＇an City should control its population size and improve its low and middle efficiency cropland as well as practice dryland farming technique application to stabilize the grain production.关键词
退耕还林（草）/延安市/粮食安全Key words
grain for green project/Yan＇an City/grain security分类
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姚蓉..退耕还林（草）背景下延安市粮食安全态势评析[J].水土保持研究,2011,18(6):226-230,235,6.基金项目
国家社会科学基金项目 （）
