中国草地学报2025，Vol.47Issue(10)：64-72,9.DOI:10.16742/j.zgcdxb.20250069
科尔沁草原生态系统国家定位观测研究站植被景观构成分析
Analysis of the Vegetation Landscape Composition of the Horqin Grassland Ecosystem National Observation and Research Station in Inner Mongolia
摘要
Abstract
Biodiversity monitoring constitutes a critical component of ecological observation and research,while regional vegetation landscapes provide the foundational support for biodiversity.This study illustrated the regional vegetation landscape composition of the Horqin Grassland Ecological Station by quantifying landscape het-erogeneity through the Shannon-Wiener diversity index(SHDI)and Pielou evenness index(SHEI),based on land-use data from five sites,with radii from 100 to 2000 m.Results identified that steppe grassland serves as the landscape matrix across the ecological station.There were significant variations in the area proportions of different landscape components among sites.Grasslands were the predominant type of the total area and substantially exceeding other categories.Cropland and forest-grassland ecotone followed as the secondary coverage,while the two remaining types(cropland and forest-grassland ecotone)had minimal impact.Landscape diversity(SHDI)increased significantly with spatial scale expansion,from 0.28(100 m scale)to 0.90(2000 m scale),whereas evenness(SHEI)decreased,from 0.55(100 m scale)to 0.24(2000 m scale),indicating that despite greater habitat richness at broader scales,resource distribution exhibits increasing inequality.This study establishes base-line landscape data for the National Ecosystem Research Station.These findings confirm that moderate cultivation and forest-grassland ecotone can enhance landscape diversity,providing a quantitative guidance for configuring artificial vegetation in degraded grassland restoration.Future research will integrate species diversity surveys to establish quantitative models linking landscape heterogeneity to biodiversity,thereby supporting decision-making for the construction of regional ecological security pattern.关键词
科尔沁草原/多尺度景观格局/生物多样性/国家定位观测研究站Key words
Horqin Grassland/Multi-scale landscape patterns/Biodiversity/National Positioning Observation and Research Station分类
农业科技引用本文复制引用
白依娜,宋燕妮,肖海军..科尔沁草原生态系统国家定位观测研究站植被景观构成分析[J].中国草地学报,2025,47(10):64-72,9.基金项目
国家重点研发计划项目(2022YFD1400400,2022YFD1400600) （2022YFD1400400,2022YFD1400600）
