四川省甘孜州东部是我国矿产资源富集区和生态地质环境保护的核心区之一,解决区内资源开发与环境保护矛盾的出路之一在于查清面向矿业活动的生态地质环境质量.通过生态地质环境质量的历史研究和现状分析,应用目标分析法构建了生态地质环境质量评价指标体系,将其划分为目标层、类指标层和基础指标层,遴选并获取15个基础评价指标的图层信息,应用多源数据实现生态地质环境质量分级.结果表明:研究区域生态地质环境质量空间分布为南优北差、西优东差;生态地质环境质量图斑长轴方向主要为北西和北东向;不同级别生态地质环境质量之间的顺次过渡或跳跃式过渡严格受地貌及断裂控制;生态地质环境质量是各要素多期次、综合性作用的结果.
East Ganzi Tibetan Autonomous Prefecture, Sichuan Province, is one of the core mineral-rich and eco-geological environmental protection areas in China. One way to solve the contradiction between resources development and environmental protection is to study the eco-geological environmental quality of mining activities. By analyzing the historical and present data of ecogeological environmental quality,an assessment index system divided into target layer,class index layer and basic indicators layer was established,and fifteen basic indicators layer information were selected and collected. Finally,the excellent,good,fair and poor gradings of eco-geological environmental quality were realized using multi-source data. The results were as follows: the eco-geological environmental quality is better in the South and the West than in the North and the East; the long axis of the eco-geological environmental quality polygon is mainly in the Northwest and the Northeast; the sequential or leap transition of the different ecogeological environmental quality grading is strictly controlled by topography and fracture; and,the eco-geological environmental quality is controlled by comprehensive factors over multiple periods.