纵向岭谷区植被景观多样性的空间格局  

Spatial pattern of vegetation landscape diversity in Longitudinal Range-Gorge Region, Southwestern China

作　　者：潘韬[1] 吴绍洪[1,2] 戴尔阜[1] 赵东升[1] 尹云鹤[1] 

机构地区：[1]中国科学院地理科学与资源研究所,北京100101 [2]中国科学院青藏高原研究所,北京100085

出　　处：《应用生态学报》2010年第12期3091-3098,共8页Chinese Journal of Applied Ecology

基　　金：国家基础研究发展计划重点项目(2003CB415101)资助

摘　　要：基于中国1∶100万植被类型数据,采用GIS空间分析方法,分析了纵向岭谷区主要植被景观多样性指数的空间格局及其与环境因子之间的关系.结果表明:研究纵向岭谷区植被景观多样性的理想粒度是2000m;纵向岭谷区植被景观多样性指数的空间格局具有明显的区域分异特征,表现为南北方向延伸、东西方向分异的"通道-阻隔"空间格局;植被景观多样性与环境因子的相关性较好,环境因子在空间上的分异格局是影响植被景观多样性指数在空间格局上变化的主要因素.纵向岭谷特殊地形的"通道-阻隔"作用对该区的水热空间分布进行了再分配,是该区植被景观多样性的特殊空间格局的主要成因.Based on the China 1： 1000000 vegetation type map,and by using GIS spatial analysis, the spatial pattern of major vegetation landscape diversity indices and its relationships with environmental factors in Longitudinal Range-Gorge Region （ LRGR） were analyzed. The proper scale for studying the vegetation landscape diversity in LRGR was 2000 m. In the study region,an obvious regional difference was observed in the vegetation landscape diversity indices,exhibiting typical longitudinal＂corridor＂and latitudinal＂barrier＂characteristics. The correlations between the vegetation landscape diversity indices and environmental elements were significant,and the regional difference in the environmental elements was the main factor controlling the spatial pattern of vegetation landscape diversity indices. The＂corridor-barrier＂function of the longitudinal range-gorge terrain made a spatial redistribution of hydro-thermal conditions,being the main cause of the special pattern of the vegetation landscape diversity in LRGR.

关 键 词：纵向岭谷区 植被景观多样性 格局 “通道-阻隔”作用 

分 类 号：Q948[生物学—植物学]