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In the context of national urban and rural development strategy, the third round of land-use planning revision and urban and rural construction sites linked to the layout of the urban and rural construction land, rational use of land resources and scientific research for the development of urban and rural integration, the preparation of land use planning, and so has practical significance. Study analyzed the urban and rural development, village system planning, regulation and control of land-use space, urban and rural construction land increase or decrease on the basis of the research status quo is linked to the scale of aggregate economic theory, central location theory, Voronoi graph theory and ArcGIS distance mapping principle as the theoretical basis, urban and rural construction land layout method. Study Zhidan County, Shaanxi Province, once the eight towns, for example, adjust the layout of towns and villages of rural settlements system reconstruction of urban and rural construction land layout is divided into two parts. Rural residential layout adjustment part, the use of ArcGIS cost distance weighting function (Cost Weighted) tools, based on a cost raster from the center of environmental conditions and radiation, obtained 100 rural settlements in the town of cost allocation (ideal farming) and the corresponding cost distance, the Use of Statistics (Zonal Statistics) tool to get the rural settlements allocating the cost of the average cost of farming distance and area of ??agricultural land per capita, according to these two factors will be divided into rural settlements retain development control development and revocation moved the type of development, and to develop the the differentiated land policy, rural residential layout adjustment; towns and villages system reconstruction section, select the size of the population, rural residential land scale, the average farming cost distance and per capita farmland area four factors to calculate the capacity of rural residential development index, the use of spatial association Overlay (Spatial Join) tools and modeling (Model Builder) tools to build rural settlements system and rural residential classification, pursuant to which the building once the eight town town center - the center of the village - grass-roots village 13 rural residents of the three towns architecture to guide the rational distribution of urban and rural construction land, where once eight town center of town, selected nine center of the village, 78 grass-roots village reserved, revocation point. The problems of urban and rural construction land use structure and layout optimization, reform and improve the rural collective land circulation system, and promote the rational distribution of urban and rural construction land, improve the urban and rural construction sites linked to changes in system, complementary factors of production in urban and rural areas, respect for farmers to develop wishes and protect the interests of farmers to develop, to achieve the harmonious development of society, three supporting policy recommendations, with the urban and rural construction land layout research programs, to optimize the structure and layout of urban and rural construction land, promotion of land resources rational allocation and utilization.
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