多源数据融合技术在汶川地震生态环境影响应急评估中的应用

在实施汶川地震生态环境影响应急评估工作过程中，考虑到时间紧、范围大的现实情况，对空间数据处理技术与方法上进行了深入探索，成功地采用多源数据集成与融合技术，将不同传感器、不同空间分辨率、光谱分辨率、时间分辨率和不同格式的数据进行了集成与融合，大大提高了遥感影像的有效覆盖范围和灾害信息判读精度，快速、全面地实现了地震灾害对生态环境影响的初步评估，探索出应对巨灾后生态环境遥感监测与评估的基本方法与技术。最后，建议我国要加强生态环境本底数据库建设，完善部门间数据共享机制，促进多源数据集成与融合技术的推广与应用，为更好应对未来的生态灾难做准备。

Technique of multi-source-data integration and fusion for urgent assessment of ecology and environment effect from Wenchuan Earthquake

The methodology and technique of spatial data processing were studied in the emergency assessment of Wenchuan Earthquake impacts on environment. The techniques of multi-source-data integration and fusion were used successfully to integrate data in different format which were collected from different sensors with different spatial, spectral and temporal resolution. The effective coverage of remote sensing image was expanded and the interpretation accuracy of information on disaster was improved. The primary assessment of earthquake disaster impacts on environment was finished quickly and comprehensively. The methodologies and techniques of using remote sensing technology were set up to monitor and evaluate heavy disaster impacts on environment. In order to strengthening the ability to cope with the future disaster, we suggest to emphasize the construction of environmental background database; strengthen and perfect the multi-sector data sharing mechanism and promote using the technique of multi-source-data integration and fusion in China.