2023Vol.55No.1林业科技情报基金项目:河北省自然科学基金生态智慧矿山联合基金资助项目(E2020402086)。*第一作者简介:刘海新,副教授,研究方向:生态环境遥感、农业干旱遥感和GIS在矿山中的应用。*通信作者:钱以临,河北工程大学矿业与测绘工程学院研究生在读,E-mail:779622983@qq.com。2003—2019年内蒙古FIRMS_MODIS植被火点时空变化刘海新*钱以临*孔俊杰张灿刘韦志(河北工程大学矿业与测绘工程学院,河北邯郸056038)[摘要]基于FIRMSMODISC6火点数据集,采用重心模型、空间相关性和均值聚类等方法,分析2003—2019年间内蒙古自治区植被火点时空分布格局。结果表明:研究区年际火点数量先增后减,春秋季节为高发期,火点主要集中在3-5月和9-10月。在空间上,火点多分布于低海拔区域,年际火点重心由东北向西南迁移,月火点重心主要分布在东部城市;植被火点空间自相关水平较低;植被火点呈现“春季主导型”“秋季主导型”“无明显特征”3种聚类类型。[关键词]MODIS;植被火点;时空分布;空间相关性;空间聚类中图分类号:S762文献标识码:A文章编号:1009-3303(2023)01-0001-08TemporalandSpatialVariationsofVegetationFiresinInnerMongoliaFrom2003to2019BasedonFIRMS_MODISLiuHaixin*QianYilin*KongJunjieZhangCanLiuWeizhi(SchoolofMiningandGeomaticsEngineering.,HebeiUniversityofEngineering,Handan056038,Hebei,China)Abstract:BasedontheFIRMSMODISC6firepointdataset,thecenterofgravitymodel,spatialcorrelation,meanclusteringandothermethodswereusedtoanalyzethespatiotemporaldistributionpatternofvegetationfirepointsinInnerMongoliaAutonomousRegionfrom2003to2019.Theresultsshowedthat:thenumberofinter-annualfirespotsinthestudyareaincreasedfirstandthendecreased,andthespringandautumnseasonswerehighincidenceperiods,andthefirespotsweremainlyconcentratedinMarch-MayandSeptember-October.Spatially,thefirespotsaremostlydistributedinlow-altitudeareas,theinter-annualfirespotsmovefromnortheasttosouthwest,andthemonthlyfirespotsaremainlydistributedineasterncities;thespatialautocorrelationlevelofvegetationfirespotsislow;Therearethreetypesofclustering:dominant,“autumndominant”and“noobviousfeatures”.Keywords:MODIS;vegetationfirepoint;spatiotemporaldi...