Study on Urban Land Use Structure Optimization in Western China:Taking Xi'an as an Example

In order to improve the urban land use structure in western China,based on analytic hierarchy process,linear programming method,etc.,the quantitative evaluation model for land use structure and optimal supply model for construction land were built.Taking Xi'an as an example,the efficiency of urban land use structure was quantitatively evaluated,and the ratio of land use optimal supply was measured.The results show that efficiency index of urban land use structure in Xi'an is 0.691,belonging to the second potential level;urban land use structure trends to be more reasonable but with a certain number of optimization further;after the optimization,the ratios of business service land,industrial warehouse land,residential land,public management-service land,special use land and urban transportation land are 10.7%,25.7%,22.2%,18.9%,4.0% and 18.5%;business service land,public management-service land and urban transportation land are increased suitably,and the other types are decreased.Finally,the optimizing suggestions for urban land use structure in Xi'an are increasing the business service land to improve the development of economy of main urban area,optimizing the distribution of industrial warehouse land to guide the enterprise into the industrial park,slowing the supplement of commercial residential building land to optimize the indemnificatory housing land structure,increasing the public management-service land suitably to improve the urban synthetic service function,and increasing the urban transportation land to improve the support service level.