Agricultural Structure Adjustment In Shandong Province And Optimal Allocation Of Land Resources

China has made great achievements on agricultural structure adjustment from adaptive adjustment to strategic adjustment. However, there are still problems in misuse of natural resources, ecological damage and so on at present, because of chronicity, arduousness, complexity in agricultural structure strategic adjustment. Therefore Central File No.1 point out: we should adjust agricultural structure actively according to the requirements of high yield, high quality, high efficiency, ecology, Safety. Finally ,agricultural structure adjustment depends on optimal allocation of land resource, but tendency to decrease of can not reverse, farmland quality continually decline in some regions, there are misuse of land resource in agricultural development. Under the new situations, the research on the agricultural structure adjustment and land resource optimal allocating is imperative nowadays.The paper use similar coefficient of industry structure for reference to appraise agricultural structure of Shandong , valuation of land use include characteristics of the land use The problems to be solved two sections, calculate comprehensive comparative priority index of main crops. Based on above works, multi-objective programming model and system dynamics model are established, then the models are put into practice, land resource are optimal allocated with GIS technology. Full text chiefly includes several aspects as follows:At first part, the meaning and the purpose of thesis are firstly made clear, and then briefly review and sum up the present study theory and practice at home and abroad, and the study thought and thesis structure frame of full text.At second part: the fundamental conception of agricultural structure adjustment and land resource optimal allocating are expressed, the relation between them are described, then sum up theoretical foundation of the paper. The third part use similar coefficient of industry structure for reference to appraise agricultural structure of Shandong , valuation of land use include characteristics of the land use The problems to be solved two sections.The 4th part illuminates the principles of agricultural structure adjustment and land resource optimal allocating, calculate and analyze comprehensive comparative priority index of main crops in Shandong province. On this basis , multi-objective programming model and system dynamics model are established, the results are work out. Then, combined model are set up, cultivation area of main crops are optimal allocated.The 5th part analyze the factors which influence land resource optimal allocate, introduce the basic principle of entropic coefficient method, define evaluation units, select evaluation index system. Then, land re-source are optimal allocated with GIS technology in Shandong province.The 6th part is advice.Finally, author briefly sums up the major conclusions of this thesis, gives some advice and assume in future.