芜湖市土地利用时空演变与生态敏感性分析  

Analysis of Spatial-temporal Evolution and Ecological Sensitivity of Land Use in Wuhu City

作　　者：晋欢 JIN Huan(Anhui Agricultural University,Hefei,Anhui 230000)

机构地区：[1]安徽农业大学,安徽合肥230000

出　　处：《安徽农业科学》2023年第15期78-81,84,共5页Journal of Anhui Agricultural Sciences

摘　　要：基于2000—2020年芜湖市土地利用数据,利用ArcGIS 10.7等软件分析芜湖市20年间土地利用变化,选取高程、坡度、坡向等8个单因子结合AHP层次分析法确定各单因子的权重并对研究区域生态敏感性进行加权叠加分析。结果表明,2000—2010年芜湖市土地利用情况发生较大变化,林地与耕地是减少较多的用地类型,大多转化为建设用地;林地转化为耕地、耕地转化为建设用地面积较多。景观格局指数表明人为干扰程度逐渐强烈,斑块数量逐渐减少,生物多样性降低,斑块之间分离度增加,形状指数降低。综合生态敏感性分区以中敏感为主,占整个研究区面积的53.82%。Based on the land use data of Wuhu City from 2000 to 2020,ArcGIS 10.7 and other software were used to analyze the land use change of Wuhu City in 20 years.Selecting 8 single factors such as elevation,slope and aspect,and combine them with the Analytic Hierarchy Process(AHP)to determine the weights of each single factor,and perform weighted overlay analysis on the ecological sensitivity of the study area.The results showed that the land use in Wuhu City had changed greatly from 2000 to 2010.Forest land and cultivated land were the types of land that had been reduced more,and most of them had been converted into construction land.The conversion of forest land into arable land and arable land into construction land were relatively large.The landscape pattern index indicated that the degree of human interference gradually intensified,the number of patches gradually decreased,biodiversity decreased,the degree of separation between patches increased,and the shape index decreased.The comprehensive ecological sensitivity zoning was mainly medium sensitive,accounting for 53.82% of the entire research area.

关 键 词：土地利用 时空演变 生态敏感性 生态安全 芜湖市 

分 类 号：X171.1[环境科学与工程—环境科学]