西双版纳勐养自然保护区的空间结构与土地利用现状评价

利用GIS技术研制了保护区土地利用现状图 .采用多样性、丰富度、优势度、破碎度和分离度对保护区的空间结构和土地利用现状进行了评价 .结果表明 ,保护区的土地利用以季风常绿阔叶林为主 ,主要保护类型的分布面积很小 ;区域空间结构的多样性和破碎度随干扰强度而增加 ;自然景观的分离度与人类活动的强度呈正比 ,干扰景观的分离度与人类活动强度呈反比 ;现行功能区划分不尽合理 ,应适当调整功能区划

An assessment on the spatial structure and present land use in Mengyang Nature Reserve of Xishuangbanna.

The map of present land use in Mengyang Nature Reserve was drawn by GIS method. Five indices i.e., abundance, diversity, dominance, fragmentation and isolation were chosen to evaluate the present situation of land use and spatial structure. Monsoon evergreen broad leaved forest is the major land use type, and protected seasonal rainforest is rare. The diversity and fragmentation of spatial structure increase with the disturbance intensity. The isolation value of natural landscape is in direct ratio to the intensity of human activity, while that of disturbed landscape is on the contrary. It is suggested that the division of present function zones is not satisfactory, and should be adjusted.