Research On Spatial Distribution Of Urban Construction Land In Hilly Area

Urban construction land is the important carrier of social economic activities. With the rapid development of social economy, People’s demand for urban construction land is more and more big, With the expansion of urban construction land, It also appeared problems such as disordered, planning approval but not started. Many people and little land is the basic condition of our country, How to create unlimited value in the limited land, Optimization of urban construction land spatial distribution is particularly important.In this paper, taking Beibei as an example, On the basis of analyzing the present situation of the study area, Research on the effect of urban construction with the factors of space distribution analysis, The study area selected for urban construction land space distribution of the natural, social and economic, ecological and other related factors, Establish the evaluation index system, And the weights assigned to each index by ahp. Analysis of spatial distribution of land use by the GIS on each index under the influence of urban construction, Which is reflected by the distribution of urban construction,Under the influence of single factor.The single factor influence urban construction with the distribution of the, The index under the influence of urban construction land suitability weighted superposition of classified thematic map, then get the superposition results. Finally the results of superimposition into high suitable construction area, construction area of suitable, low suitable construction area and not suitable for construction area of four grades, The proposed optimization scheme of space distribution of urban construction research area. The main contents and conclusions are summarized as follows:(1) Analysis on the construction of urban land use present situation and change research. Research shows that, in2011, Urban construction land is mainly distributed along the main traffic, Concentrated in the south of the study area. The southern distribution more, but,The northern less.2011-2005, The increase of urban construction land is3851.25hm2, Increase the volume of more than urban construction land in2005; Farmland decreases obviously, Reduced2857.39hm2.(2)Analysis the influencing factors of the urban construction. Based on topography, natural disasters, regional conditions, policy, ecological safety factors, Analysis the distribution of land for urban construction. Reflect the spatial distribution of land use in urban construction under single factor, To provide a basis for the construction of the evaluation index system.(3) Study on urban construction land Suitability Evaluation. Evaluation results show that the study area high suitable construction area, construction area of suitable, low suitable construction area, not suitable for construction area respectively15.82%,24.25%,39.34%,20.59%. High suitability areas are mainly located in Beibei,Caijia,Shuitu three groups, The construction of suitability region is mainly situated in the Jialing River region, A low suitability construction area are mainly located in the northeast and southwest of Beibei, Not suitable for the construction area are mainly located in Huaying Mountain Forest,As different conditions of Agricultural Land Suitability Regionalization of view, In the high, suitable, low, constructive area, are cultivated land area up to; Not suitable for construction area, forest land area up to. As different optimum distribution of partition of towns, In the high, suitable, low, Not suitable constructive area, Respectively corresponding to the Caijiagang, Fuxing, Chengjiang, Jindaoxia town located at. According to the evaluation results, Suggest high suitable mainly for urban construction land distribution construction area and Economic development shall be, In the suitable construction area should be as urban construction land for future expansion area; Low suitable construction area should be based on the protection of basic farmland and farmland; Not suitable for construction area should be based on the protection of the ecological environment, focus on the ecological construction.(4) Spatial distribution of land use plan of urban c Different conditions of Agricultural Land Suitability Regionalization of view,onstruction research. According to the evaluation results, Put forward for the future development of area of urban construction land distribution scheme:Group distribution, Development along the main traffic artery, Speed up the group contact, all kinds of urban construction land to group aggregation, Pay attention to regional ecological protection.