基于多源卫星遥感数据的森林过火区面积估算方法  

Extracting Forest Burned Scar Region Area Based on Multi-Source Remote Sensing Data

作　　者：郑伟[1] 李亚君[1] 刘诚[1] 王萌[1] 

机构地区：[1]国家卫星气象中心,北京100081

出　　处：《林业科学》2011年第8期192-195,共4页Scientia Silvae Sinicae

基　　金：国家863项目"多源卫星遥感高时空分辨率森林火情监测预测评估系统研究"(2006AA12Z125);农业部行业专项"草原火灾应急管理技术研究"(200903041);国家自然科学基金项目(40901231)

摘　　要：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,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.

关 键 词：多源遥感 森林火灾 过火区估算 

分 类 号：S762[农业科学—森林保护学]