Study On The Agglomeration Pattern Of Grain Production In Yunnan Province

Grain is strategic material of a nation.There is mountain area accounts for most part and plian area accounts for only a small part of Yunnan Province.The poor agricultural infrastructure,backward production mode,shortage of water resource.Lead to the grain shortages.In order to ensure food security and achieve food self-seeking balance.We find the food self-seeking balance breach,food production has made remarkable achievements,The total and sown area are increasing since the Reform and Opening.By 2014,achieve twelve even increase.Grain from the outside transferred self-seeking.The paper on the basis of geography temporal perspective to overcome the traditional emphasis on single spatial hierarchy.The paper took county as a spatial hierarchy and used GIS to analyze the grain geographical convergence.Analysis of the grain output and acreage and comparative advantages,anatomy of grain production geographical convergence,resolve mian driving forces,expand food security and propose countermeasures.The results showed that in Yunnan Province,the grain has a comparative advantage,concentration ratio is rising,geographical convergence is evident,county more obvious than ground level,different crops vary grently agglomeration and regional differentiation is significant.The county has a significant positive spatial autocorrelation and different crops have different positive spatial autocorrelation. Grain geographical convergenc is stable and different crops have different status.There are mian driving forces:the sown area,the average temperature of the year,the annual precipitation,the first industrial output,the rural employees,the urbanization,the improved varieties subsidy and so on.The study included eight parts:The first part introduces the background and significance of this paper,theoretical studies in domestic and foreign,research content and study area of this article.The second part,analyzed of the grain output and acreage and comparative advantages.The third part, anatomy of grain production geographical convergence.The fourth part, used GIS to analyze the grain geographical convergence spatial autocorrelation.The fifth part, resolve mian driving forces on the basis of the Eviews.The sixth part, expand food security from 1990-2014.The seventh part, propose countermeasures.The eighth part,the mian conclusions and prospects.