2023年1月JournalofGreenScienceandTechnology第25卷第2期收稿日期:2022-11-23基金项目:国家重点研发科技专项(编号:2017YFB0503500)作者简介:王亚琼(1992-),女,硕士,助教,研究方向为林业信息科学。基于Landsat合肥市植被覆盖度时空变化及影响因素王亚琼,高曼莉,罗劲松(安徽林业职业技术学院资源与环境系,安徽合肥230000)摘要:基于Landsat数据估算合肥市2001~2020年植被覆盖度空间分布,研究了多年连续动态变化特征。结果表明:①合肥市平均植被覆盖度达50.03%,近20年呈现稳定上升趋势,增速0.001/10a,表现为无、低植被覆盖度向中、高植被覆盖度转变,增幅面积占比分别为1.77%和1.34%;②全市19.34%的区域植被覆盖度呈改善趋势,集中在巢湖沿岸地带、生态农业区及老城区。14.32%的区域则出现不同程度的退化,集中在城市新建地带、城郊结合区以及部分耕地山区;③气候对植被覆盖度的变化起主导作用,贡献度达13.096%,地表因子和人类活动因子影响作用依次减弱,地表因子(高程和土壤类型)加强了气候因子的影响作用,人类活动加强地表和气候因子对植被覆盖度变化的影响。关键词:植被覆盖度;Mann-Kendall方法;时空分析中图分类号:Q948.152,TP79文献标识码:A文章编号:1674-9944(2023)02-0047-05SpatialandTemporalVariationandInfluencingFactorsofVegetationCoverageinHefeiCityBasedonLandsatWangYaqiong,GaoManli,LuoJingsong(AnhuiVocational&TechnicalCollegeofForestry,Hefei,Anhui230000,China)Abstract:ThispaperestimatesthespatialdistributionofvegetationcoverageinHefeiCityfrom2001to2020basedonLandsatdata,andstudiesthecharacteristicsofcontinuousdynamicchangesovertheyears.There-sultsshowthat:①TheaveragevegetationcoverageinHefeiCityis50.03%,andithasshownasteadyup-wardtrendinthepast20years,withagrowthrateof0.001/10a.Theratiosare1.77%and1.34%respec-tively.②19.34%ofthecity'sregionalvegetationcoverageshowedanimprovementtrend,concentratedinthecoastalareasofChaohuLake,ecologicalagriculturalareasandoldurbanareas.14.32%oftheareasweredegradedtovaryingdegrees,concentratedinthenewurbanareas,urban-suburbanareas,andsomecultivat-edmountainousareas.③Climateplaysaleadingroleinthechangeofvegetationcoverage,withacontribu-tionrateof13.096%.Theeffectsofsurfacefactorsandhumanactivityfactorsareweakenedint...
