The Urban Planning Land Layout Environmental Suitability Analysis Supported by ArcGIS Buffer Analysis

In this paper, regarding the difficulty to quantify urban planning land layout scheme comparison and environmental reasonableness of land use layout in urban planning impact evaluation, ArcGIS's spatial analysis is used combined with the Delphi method and AHP to determine the factor weights to build a preliminary methodology. Five categories of urban construction land were divided into three categories such as Environmental sensitivity land, environmental services land and sources of pollution land. It formed four evaluation systems such as the suitability of residential land layout, the suitability of industrial land layout, the suitability of transportation land layout and the suitability of green square land layout. And the paper took the Overall Planning of Qinzhou city as an example, and quantified the suitability of the layout of urban land, the results were more intuitive, scientific and comparable. It provided better support from the perspective of environmental rationality to judge the pros and cons of the different planning land use layout program.