Research On Spatial Layout Of The Expanding Area Of Town Based On The Ecological Suitability

With the rapid development of urbanization and quickly increasing urban population, urban dimension is rapid expanding. Due to the lack of scientific and reasonable argument, many urban construction land development is blind and disordered, hand caused the deterioration of the ecological environment, on the other hand, construction land sustainable use to bury next hidden trouble. Therefore only by fully understanding the construction land ecological suitability, in order to ensure the ecological environment under the premise of construction land rational use and development.Above this background, taking ecological suitability evaluation of the town development zone as the main thread, the paper index system of town Development Zone ecological suitability evaluation, evaluation model as well as the GIS platform support evaluation method, finally summery the town development zone ecological suitability evaluation method. Based on the summing up of the method, the paper conducts County Development Zone ecological suitability evaluation; and use evaluation results to adjust and optimize the expansion of Xiushan county.Research shows that:1) Town development zone of ecological suitability factors are complex and comprehensive; 2) Under the GIS support, city land use comprehensive evaluation method is an effective means, and using this method is the key to establish the spatial database:3)Data acquisition serious effects the selection of evaluation methods and the evaluation results are very different; 4)In this paper, the ecological suitability classification can be divided into four categories:urban development zone, urban development zone, urban development is built the district and town development of exclusion zone:5) Based on ecological Perspective, compare the spatial layout of Xiushan County of optimization scheme with a new round of land use planning, construction forbidden zone, warehousing logistics flexible layout, urban development direction are inconsistent.