TM验证MODIS过火面积产品精度分析——以黑龙江省重大森林火灾为例  

Using TM to Validate Burnt Area of Large Forest Fires Based on MODIS:A Case Study in Heilongjiang Province

作　　者：焦琳琳[1,2,3] 申丹[1,3] 常禹[1] 胡远满[1] 李春林[1] 

机构地区：[1]中国科学院沈阳应用生态研究所森林与土壤生态国家重点实验室,沈阳110016 [2]中国科学院地理科学与资源研究所,北京100101 [3]中国科学院大学,北京100049

出　　处：《遥感信息》2015年第6期24-30,共7页Remote Sensing Information

基　　金：国家自然科学基金(31470516;41201185;41271201);中国科学院战略性先导科技专项(XDA05050201)

摘　　要：鉴于准确估测森林的过火面积对森林火灾的损失评估和过火区植被的恢复所具有的重要作用,选取了2006年~2010年黑龙江省51个重大森林火灾记录,分别利用MODIS的MOD14A2（Terra）火产品数据和TM遥感影像数据估算过火面积,并利用Kappa指数分析过火面积在数量和空间位置上的一致性。结果表明：在单个火场尺度上,小于3.72km2的森林火灾不适于利用MOD14A2产品来估算过火面积,而年过火总面积的相对误差小于15%。MOD14A2火产品可以有效地估测年度尺度上森林的过火面积;数量Kappa指数明显大于位置Kappa指数和标准Kappa指数,位置Kappa指数较低,这可能是由于MODIS数据的空间分辨率较低、林火记录坐标位置不够准确等原因造成的,有待进一步研究。Burnt forest area is an important parameter of forest fires.Accurate estimation of burnt forest area has significant implications both for assessment of losses caused by forest fires and for post-fire regeneration.In this paper,the MODIS fire product,MOD14A2,and TM image data were utilized to estimate burnt forest area of 51 burned sites from year 2006 to 2007 in Heilongjiang province.Kappa index was used to test the consistency between burnt forest area derived from MOD14A2 and TM data.Results showed that it is not applicable to estimate burnt forest area less than 3.75 square kilometers using MOD14A2 product,while the relative error for annual burnt forest area was less than 15%.The MODIS fire product,MOD14A2,could be effectively used to estimate annual burnt forest area.Quantitative Kappa index was obviously higher than location Kappa index and standard Kappa index and the lower location Kappa was probably due to the low spatial resolution of MODIS and the inaccurate geographic positions of forest fires recorded,which needs to be further explored.

关 键 词：MODIS TM 林火 过火面积 黑龙江 

分 类 号：Q149[生物学—生态学]