西双版纳勐养自然保护区生境格局研究

使用ARC/INFO和ARC/VIEW地理信息系统 ,对以 1 995年 3月的卫星影像图、相关图件及数据为基础的图形数据库进行迭加分析 ,研究了西双版纳勐养自然保护区的生境格局 .结果表明 :1 )生境格局不是所有生态因素图件的简单迭加 ,以年均温和年降水量为主导因素 ,以自然植被为可见指标研制了生境格局 ;2 )确定出 3种生境类型的 2 0个生境个体 :热带季节雨林生境 (2 37.53km2 ,占总面积的 2 1 % )、热带山地雨林生境(1 2 6 .93km2 ,占 1 1 % )和亚热带季风常绿阔叶林生境 (764 .88km2 ,占 68% ) ;3)初步建立了一个山地生境格局的研究体系 :生态小区→生境类型→生境组分 ;4)生境格局研究揭示了保护区 59%的现有重点保护对象 (热带雨林 )不在核心区的现实 ,为保护区功能区调整提供了科学依据 .

Ecological environment pattern in Mengyang Nature Reserve of Xishuangbanna.

Studies on the ecological environment pattern (EEP) in Mengyang Nature Reserve of Xishuangbanna with the application of ARC/INFO(VIEW) GIS showed that the EEP was not a totality of all ecological factors, but produced by two major ecological factors, annual temperature and annual rainfall, and a visible indicator of natural vegetation. Three ecotope types with 20 ecotope individuals were identified, which were tropical seasonal rainforest ecotope type (with an area of 237.53 km 2 or 21% of total area), tropical mountainous rainforest ecotope type (126.93 km 2, or 11%), and subtropical monsoon evergreen broad leaved forest (764.88 km 2, or 68%). A mountain EEP system was developed, including eco district, landscape type and ecotope components. The EEP study revealed that approximately 59% of the tropical rain forests protected legally were not in the core area, which provided the necessity to alter the functional zones of the reserve.