基于GIS的环巢湖地区地质环境承载能力评价

ASSESSMENT OF GIS-BASED GEOLOGICAL ENVIRONMENT CARRYING CAPACITY IN CIRCUM-CHAOHU LAKE AREA,ANHUI,CHINA

为了了解地质环境条件及其与社会经济的匹配程度,开展了环巢湖地区地质环境承载能力评价.在分析地质环境特征的基础上,从本底和状态两个角度建立了研究区地质环境承载能力评价指标体系.应用层次分析法(AHP)和专家打分法分别确定各个评价指标权重,并基于GIS软件对各指标层加权叠加,最后获得研究区地质环境承载能力评价结果.结果表明,环巢湖地区地质环境承载能力本底状况较好,中-高区面积占总面积的93.52%;承载状态主要为盈余-均衡区,超载区面积仅占总面积的0.33%,零星分布在银屏山、刘家墩和雾顶山.

The geological environment carrying capacity in the circum-Chaohu Lake area is evaluated to ascertain the geological environment conditions and their matching degree of with social economy.Considering the geological environment features in the area,an assessment index system is set up on the basis of carrying background and actuality.Weight assessment indexes are presented by analytic hierarchy process(AHP)and expert scoring method,respectively.The evaluation results of geological environment carrying capacity are obtained with GIS spatial overlay analysis on the assessment indexes.The result shows the carrying background of geology environment in the circum-Chaohu Lake area is in good condition,with medium-high capacity area accounting for 93.52%of the total area.The carrying actuality of geology environment is in well condition,with overload area accounting for only 0.33%,scattered in Yinping Mountain,Liujiadun and Wuding Mountain.