Study On Optimization Of The Structure And Layout Of Urban And Rural Construction Land In Zixing City

Land is a limited and non-renewable resource. And it is the most fundamental factor in the development of economy and society. With the development of economy and urbanization more and more land will be needed. Land-use planning is an action plan which can optimize the structure and layout of land and realize rational land use. It is important to land management and the development of economy and society whether the land-use planning is scientific, especially the structure and layout of construction land. Optimizing the structure and layout of construction land in urban and rural is the focus point in the construction of urban and rural. And it also is the important way to alleviate land use contradiction, improve the efficiency of land use, and promote to economize and gather contract land.With the support of the basic theories and methods, the thesis takes Zixing City as a Practical testing. Firstly, the thesis puts forward five features as well as the goals and the principles of optimizing structure and layout of urban and rural construction land. Then, the thesis analyzes the present situation of Zixing's construction land in detail, and points out the problems of its structure and layout. According to the analysis above, the thesis optimizes the land use structure and layout of Zixing city with linear planning mode cellular automata mode and GIS technology with the land use data in 1997～2007. Main conclusions are put forward as follows:(1)Zixing city is lack of urban land and the planning of the urban land can not meet the needs of urbanization and industrialization in future. The distribution of rural land is not rational and the potential of land consolidation is very large.(2)Because of the underdevelopment of Zixing's economy progress, economy-development becomes the major principle in every area of society. Economic indicators always are the most important ones in various efficiency evaluations. So single-object linear planning mode which aims to maximize the economic benefits could be used to optimize the structure and layout of the urban and rural land in Zixing City.(3)When the model for optimizing is selected, the local conditions should be fully taken into account. The theories and models will vary when they facing different conditions. If the simple models are applied to the region with complicated conditions, the optimizing result will be not scientific. On the contrary, if the complex models are selected at the region with simple condition, there will be a lot of insignificant work which must be done. Therefore realistic demand and propriety should be given enough consideration, when the decision is made.