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中国幅员辽阔,仅靠局部定点环境监测,远不能满足社会需求.而对大空间范围来说,遥感是唯一可行的环境变化监测手段.虽然国内外拥有强大的卫星数据获取能力和大量的卫星遥感数据,以中国全境为对象的遥感环境变化研究并不多.本文将环境变化过程归纳为环境变化驱动力、环境变化、物质迁移与转化、物质浓度与富集度变化、人或生态系统暴露与感染变化及环境变化影响等方面内容.评估了遥感对这些环节的潜力,评述了中国环境变化遥感已取得的进展.指出遥感对于研究中国环境变化在方法体系上不但要支撑实验与观测、理解与认识,还要重视和模拟与预测的衔接从而支持环境政策研究.在应用层面,应突破常规遥感观测项目,在物种多样性、生物入侵、公众健康、空气和水质量变化监测等新的领域取得突破.在技术层面全面系统加强实用化和自动化研究.
Remote sensing is the only feasible monitoring tool for environmental change in China because of its vast territory and local fixed-point environmental monitoring, far from being able to meet the needs of society. Although large-scale satellite data acquisition capabilities and large amounts of satellite remote sensing However, there are not many researches on the change of remote sensing environment for the whole of China.This paper summarizes the process of environmental change as the driving force of environmental change, environmental change, material transfer and transformation, changes of material concentration and enrichment, human or ecosystem exposure And the impact of changes in infection and environmental changes, etc. The potential of remote sensing in these areas was assessed, and the progress made in remote sensing of environmental change in China was reviewed. It is pointed out that remote sensing is not only necessary to support experiments and observations in understanding the environmental changes in China, And understanding, but also attach importance to the simulation and prediction of convergence in support of environmental policy research.Application level, should break the conventional remote sensing observation project, in the species diversity, biological invasion, public health, air and water quality monitoring changes in new areas Breakthrough achieved in the technical aspects of a comprehensive and systematic strengthening of practical and automated research.