中国西部典型区生态环境本底遥感调查

1997年我国实施了西部大开发战略,西部地区的生态环境问题再次引起多方面的关注。“西部金睛行动计划”的实施旨在通过具有代表意义的7个典型区同步监测西部10年(1990～2000年)来的生态环境变化情况,为国家西部大开发战略提供科学的决策支持。项目采用遥感与地理信息系统技术相结合的方法,按照8个统一的原则,制订了生态环境遥感监测技术指南,对这些地区在1990年和2000年的生态环境变化进行了动态监测。监测结果表明,这10年来,由于人类活动加强,农业用地、城市用地大量增加,挤占了自然/半自然植被区,草场过牧引起草场退化,致使典型区生态环境仍处于逐渐恶化的状态。

Eco-Environment Dynamic Monitoring with Remote Sensing in Typical Region of Western China

China has carried out the strategy of western region exploitation since 1997. More and more organiza- tions and people started to care of the eco-environmental issues in western China again. The plan aimed at moni- toring the eco-environmental change in western region with remote sensing over the period of 1990 to 2000 and supplied scientific decision-making for national strategy of western region exploitation. The study selected 7 typi- cal sites in western region in first stage, adopted the methodology of integrated remote sensing and GIS technolo- gy, laid a guide to eco-environment monitoring with remote sensing to dynamic monitoring eco-environment change in these regions from 1990 to 2000 according to 8 uniform rules. The results show the land for agriculture and city construction increased with occupying the land for natural and semi natural vegetation. And the regions are subject to the developing trend of eco-environment degradation.