长江三峡工程库区生态环境遥感动态监测

THE REMOTE SENSING ECOLOGICAL ENVIRONMENT DYNAMIC MONITORING OF THE THREE GORGES RESERVOIR AREA

长江三峡工程库区人类活动频繁,生态系统脆弱,三峡工程对库区生态环境的影响一直是人们关注的焦点。运用遥感、地理信息系统、全球卫星定位系统、计算机网络技术,采用DEM、影像正射校正、多源影像数据融合、多层次信息提取等技术方法,对整个库区20世纪80年代中期、90年代末期生态环境、草地资源进行了全面的动态监测,并在此基础上利用ArcGIS软件开发完成了"长江三峡工程库区生态环境遥感动态监测GIS系统"。

The Three Gorges Reservoir Area is subject to frequent human activities that are adversely affecting the fragile balance of ecosystem dynamics. The potential effects of Three Gorges project on ecological environment have always aroused much attention. With the aid of RS, GIS, GPS and network technique, the authors applied DEM, adjustment of orthographic reflection for images, interfusion of multi-source image data and multi-layer information extraction to performing comprehensive monitoring of the ecological environment of the whole reservoir area from middle 1980's to late 1990's. On such a basis, the project 'The GIS System for Remote Sensing Ecological Environment Dynamic Monitoring of Three Gorges Reservoir Area' has been developed and completed with the aid of ArcGIS software platform.