经过20多年的发展，中国已可以利用遥感、地理信息系统、全球定位系统等空间技术对洪涝、干旱、森林/草原火灾、地下煤火、雪灾、赤潮、台风、滑坡/泥石流、沙尘暴等自然灾害进行监测、评估与预警研究，也可以对空气质量、水环境及生态环境进行监测与评价。为了能够实现大范围、全天候、快速、动态的环境和灾害监测，进一步提高环境监测和综合减灾能力，中国将分阶段发射由4颗光学小卫星和4颗合成孔径雷达小卫星组成的环境与灾害监测预报小卫星星座，通过卫星系统、地面系统、应用系统的建设，最终实现天地一体化的灾害及环境监测、应急、决策支

In the past 20 years, China has made great achievements in spatial technologies development and application. Remote sensing, geography spatial technology, and global positioning system are employed to monitor and predict various disasters (flood, drought, fire, red tide, typhoon, landslide, sand storm, and so on), and to monitor and evaluate environmental qualities (aerosol, water pollution, and ecological environment). To realize large scale, dynamic, all-weather, real time monitoring of disaster and environment, China will lunch a moonlet constellation composed of 4 optical satellites and 4 SAR satellites before 2010. Meanwhile, ground-based system and application system will also be constructed. A space-ground integrated framework for disaster and environment monitoring, relieve, decision-making, and managing is expected in the near future.

李京（1956－），男，北京市人，北京师范大学教授、博士生导师，主要研究领域为遥感与地理信息系统