青藏高原生态地质环境遥感综合评价系统的设计与实现

The Design and Implementation of Qinghai-Tibet Plateau Environmental and Geological Integrated Appraisement System Based on RS Data

以青藏高原生态地质环境评价为例,选用层叠计算、层次分析和模糊灰度复合法等3种综合评价模型,以模型运行平台、模型空间数据库和模型属性数据库的相互配套为特色,设计开发了区域生态地质环境遥感综合评价系统。该系统不但解决了评价模型的可选问题和多种评价方法的对比问题,也解决了不同来源数据的格式转换问题、多种应用软件之间的交互替应使用问题以及评价结果图制作不便的问题。系统采用层叠法和模糊灰度复合法,以青藏高原地质灾害、荒漠化、湿地、冰川和断层等5个评价指标的应用示范结果表明,评价结果与实际调查结果具有较好的一致性。

With Qinghai -Tibet Plateau as the study area, this zonal environmental and geological integrated appraisement system based on RS data is mainly composed of three kinds of integrated appraisement models, i. e. , Overlay Computing, Analytic Hierarchy Process （AHP） and Fuzzy Gray Multi -method. There are three parts of components in this appraisement system, which are modal running platform, modal spatial system and modal attribute system. With this appraisement system, different models could be used to evaluate environmental and geological status of the same place, and the appraisement results from different models could be analyzed separately and compared with each other. In addition, the system solves the data conversion problem for different data types and the cartographic problem in the printing process of the appraisement result. With this appraisement system, the researchers needn＇t to open both GIS （Geographic Information System） and RS （Remote Sensing） software at the same time to operate spatial data such as ArcGIS and ERDAS. With the adoption of Overlay Computing Method and Fuzzy Gray Multi - method, the appraisement system selected five kinds of indexes, namely Disaster, Hungriness, Marsh, Glacier and Fault, in the Qinghai -Tibet Plateau to evaluate local environmental and geological status. It is proved that the appraisement result is well consistent with the field survey data.