Spatio-temporal Pattern and Spatial Heterogeneity of Ecotones Based oh Land Use Types of Southeastern Da Hinggan Mountains in China

编号 zgly0001580656

文献类型 期刊论文

文献题名 Spatio-temporal Pattern and Spatial Heterogeneity of Ecotones Based oh Land Use Types of Southeastern Da Hinggan Mountains in China

作者 YULingxue  ZHANGShuwen  LIUTingxiang  TANGJunmei  BUKun  YANGJiuchun 

作者单位 NortheastInstituteofGeographyandAgroecology  ChineseAcademyofSciences  UniversityofChineseAcademyofSciences  BureauofLandandResourcesofLinyiCity  DepartmentofGeographyandEnvironmentSystems  UniversityofMaryland  BaltimoreCounty 

母体文献 Chinese Geographical Science 

年卷期 2015年02期

年份 2015 

分类号 P901  F301 

关键词 ecotones  coreareapercentageoflandscape(CPL)  edgedensity(ED)  modifiedmovingsplitwindow  landusepattern  spatialheterogeneity 

文摘内容 Ecotones have received great attention due to its critical function in energy flux, species harbor, global carbon sequestration, and land-atmosphere interaction. This study investigated land use pattern and spatial heterogeneity of the ecotones among agricultural land, forest land, and grassland of the southeastern Da Hinggan Mountains in the northeastern China. The change of these delineated ecotones under different slopes and aridity conditions was analyzed by two landscape indices, edge density(ED) and core area percentage of landscape(CPL), to explore the inter-linkage between spatial structure of ecotones and socioeconomic development and land management. Specifically, the ecotones such as agriculture-forest(AF) ecotone, forest-grassland(FG) ecotone, and agriculture-forestgrassland(AFG) ecotone moved from the arid southeast to the humid northwest. The flat area with small slope is more edge-fragmented than the steep area since the ED decreases as the slope increases. The AF ecotone mostly found in the humid region is moving to more humid areas while the agriculture-grassland(AG) ecotone mostly found in the dry region is moving towards the drier region.