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《Journal of Anhui Agricultural Sciences》 2011-02
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Analysis on Spatiotemporal Variations of Food Security and Regional Differences in Yunnan

TONG Yan et al (College of Resources and Environmental Science,Qujing Normal College,Qujing,Yunnan 655011)  
Based on the statistical data of food production statistics,population data and related survey data from 1949 to 2008,the spatiotemporal variations of food security in Yunnan Province were analyzed;at the same time,under the support of GIS software,the regional differences of food safety changes from 1998 to 2008 in every city(state) of Yunnan Province were analyzed;and on the basis of food self-sufficiency rate in 2008(states),food safety of every city(state) were graded by using natural classification.Consequently,the characteristics of spatiotemporal variations of food safety in Yunnan Province were revealed.The results showed that the total grain output and the yield per unit increased steadily,grain sown area showed decreasing tendency,grain production was in a safe state,but there were some differences in space,hereinto,food self-sufficiency rate of Kunming and Yuxi City was lowest and lots of problems existed in the production of food.Dali,Baoshan,Dehong and Qujing were larger supply zones of food,which played an important role in the security of Yunnan Province.
【Fund】: 云南省科技厅应用基础研究面上项目(2009ZC129M)
【CateGory Index】: F326.11
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