基于高分四号的四川地区森林火点提取  

Forest Fire Point Extraction in Sichuan Province Based on GF-4

作　　者：张港 刘健 王萍[1] 焦强英 ZHANG Gang;LIU Jian;WANG Ping;JIAO Qiangying(College of Geodesy and Geomatics,Shandong University of Science and Technology,Qingdao 266590,China;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China)

机构地区：[1]山东科技大学测绘与空间信息学院,山东青岛266590 [2]中国科学院空天信息创新研究院,北京100094

出　　处：《四川林业科技》2022年第6期34-40,共7页Journal of Sichuan Forestry Science and Technology

基　　金：中国科学院A类战略性先导专项(XDA19080101)。

摘　　要：森林火灾是指不受人类控制,在林地中自由传播和扩散,对森林生态系统和人类造成一定伤害和损失的火灾行为,其发生非常突然,具有破坏性且难以处理。随着遥感技术的逐步成熟和快速发展,由于其时空分辨率高、监测范围广、成本低等优点,在森林火灾监测和灾害评估中得到了广泛的应用,已成为大规模森林火灾监测的重要工具。在森林火灾频发的四川地区,提出利用高分四号卫星开展大范围、高时间分辨率的森林火点提取方案,构建适用于四川地区的亮温火点阈值,并对云体、水体等影响因素进行剔除,实现对四川地区火点的提取,提取结果综合评价指标在0.78以上。Forest fire refers to the fire behavior that is not controlled by human beings,spreads freely in forest land,and causes certain damage and loss to forest ecosystem and human beings.The occurrence of forest fire is very sudden,destructive and difficult to deal with.With the gradual maturity and rapid development of remote sensing technology,it has been widely used in forest fire monitoring and disaster assessment due to its high spatial and temporal resolution,wide monitoring range and low cost.It has become an important tool for large-scale forest fire monitoring.In Sichuan area where forest fires occur frequently,a large-scale and high-time resolution forest fire point extraction scheme was proposed by using GF-4 satellite.The threshold of bright and warm fire point suitable for Sichuan area was constructed,and the cloud,water and other influencing factors were eliminated to realize the extraction of fire point in Sichuan.The comprehensive evaluation index of extraction results was above 0.78.

关 键 词：四川森林火灾 中红外波段 亮度温度 火点提取 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] S762.3[自动化与计算机技术—计算机科学与技术]