吴江东部地区城镇发展用地生态适宜性评价

在GIS支持下，基于景观格局分析，采用多因子加权叠加法对吴江东部地区城镇发展用地的生态适宜性进行了评价．按生态适宜度的高低将研究区发展用地划分为5类：最适宜用地、适宜用地、基本适宜用地、不适宜用地和不可用地，分别占研究区的11．93％、16．27％、22．17％、31．52％和18．11％、结果表明，最适宜用地和适宜用地仅占研究区的28．20％，而不适宜用地和不可用地占研究区的49．63％，说明研究区城镇发展用地生态适宜性总体上较低．

Ecology suitability evaluation for town development used-land in east of Wujiang Area

Ecology suitability evaluation for town development is a prerequisite and the basis of town planning. Based on the analysis of landscape pattern and the technique of GIS,the comprehensive evaluation of multi factors to evaluate the ecology suitability for town development in the east district of Wujiang Area. According to the score of ecology suitability, from high score to low, the corresponding land is classified into five grades: the suitablest land, the suitabler land, the relatively suitable land, the unsuitable land, the unsuitablest land. Accordingly the area ratio of each type in the total area is 11.93%, 16.27%, 22.17%, 31.52% and 18.11%, and the sum of the suitablest and the suitabler is 28.20% but the unsuitable and the unsuitablest is 49.63%. All these show that the ecology suitability for town development in the east district of Wujiang Area is low.