Study On The Optimization Of Urban Land Use Structurc Of Mian Yang City

Land is the material basis for human survival and social development, but also carries the basic premises of human activities. however, with the continuous economic and social development, rapid growth and escalating population size of the industrial structure, increasing demand for land, compared to the limited supply of resources, land supply and demand continue to be intensified. At the same time, the deterioration of ecological environment, land degradation and other issues also accompanied, seriously restricting the economic, social and ecological coordinated and sustainable development, how to break the constraints of limited area, as far as possible to maximize the utility of land resources, to promote the healthy and rapid development of economy and society has become a hot issue of land use to be solved. In this case, the rational allocation of resources and land structure optimization, becoming relieve the contradiction of the current situation, the most effective way to adapt to the development of urbanization. By rationalizing the current use of land resources and structure of land use structure that is optimized for efficient use of land resources, the realization of economic, social and ecological benefits of optimal synchronization it is important.By constructing a multi-objective programming model with economic, social and ecological benefits for the objective function, the use of computer and other useful tools to solve the model and analyze the advantages and disadvantages of various optimization program, and ultimately get in line with the future development of Mianyang city construction land most gifted program, to effectively control the scale of urban land, urban growth boundary delimitation of the overall urban planning and provide a valid reference. The main conclusions are as follows:(1)The status of land use structure in the city of Mianyang and department information entropy analysis showed Mianyang City Department of information entropy is in the reduction stage, urban land use is currently in an orderly state. Also through the analysis of land use structure and Chengdu, Deyang and other cities of the comparison, the proportion of living and per capita land area of Mianyang residential land was low, a higher proportion of industrial land, utilities and land with green squares the proportion of land is far below the national average, land use structure needs to be optimized.(2)Multiple regression analysis, multiple regression equation Mianyang land area with various economic benefits derived its economic objective function; solved with social ecological benefits by direct labor compensation coefficient matrix and the green industry sector consumption target matrix function. On this basis, the use of multi-objective programming model of urban construction land Mianyang optimized respectively for solving optimization program of economic, social and ecological benefits of three objective functions under the program were analyzed, and finally come to meet the planning requirements and can Mianyang land for development to meet the future needs of the optimal solution.(3) To achieve land use structure optimization cities should be taken to implement the industrial structure optimization strategy to build industrial technology city; carry out urban perspective to develop a comprehensive optimization of land use structure of the city; cultivate the land market, and strengthen land distribution market mechanism; strengthen land use planning role in promoting city health development and other measures.