森林火灾作为世界上主要自然灾害之一,严重危害森林资源,威胁人民生命财产安全,破坏自然生态环境.对森林火灾快速、准确的监测是十分重要的.森林过火面积是森林火灾最基本的描述因子,同时也是林火管理中森林火灾评估的最重要因子(易浩若等,1998;覃先林等,2008).过火区面积能反映火灾对森林植被的影响及其损失信息,评价火灾对生态环境的影响.%Forest burned scar area is an important factor for monitoring forest fire and assessing the losses. The traditional method quickly extracting burned scar area is based on satellite images with low-middle spatial resolution and cannot fully meet the need of the accuracy of assessment. This paper presents a new approach which takes advantage of high spatial resolution of CBERS/CCD and high temporal resolution of MODIS. Firstly, the vegetation coverage derived from CBERS/CCD was used to calculate NDVI with the Linear Special Mixed Model. Based on the data, the vegetation coverage data with the MODIS spatial resolution was obtained by calculating the average. Secondly, the burned scar pixels were derived by using the NDVI difference between the MODIS data before and after the forest fire. Finally the burned scar region area can be calculated based on the vegetation coverage data and the burned scar pixels. The validation, conducted in Yakeshi City in Inner Mongolia Autonomous Region in the late of May,2006, showed that the new method enhanced the accuracy in estimating the burned scar area over the traditional one.
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