大型野生动物迁徙廊道设计案例分析——以勐腊—勐养保护区间廊道设计为例

Large design case study of wildlife migration corridor—A case study for development of biodiversity conservation corridor between Mengla Sub-reserve and Mengyang Sub-reserve

促进和维持孤立栖息地斑块之间生境的连接,确保物种的生活、移动或迁移的通道,已成为对抗生境破碎化对生物多样性影响的一个重要途径。本文基于土地权属、植被、土地利用及区域性土地利用规划,利用地理信息系统软件(ArcGis)的空间分析功能对西双版纳国家级自然保护区勐养子保护区和勐腊子保护区之间区域建立生物多样性保护廊道的适宜性进行了分析,并根据分析评价结果就勐腊-勐养两个子保护区间的生物多样性保护廊道进行了设计。所规划设计的廊道长约80km、最宽处约17km、最窄处约3km、总面积60595hm2;廊道主要依托现有的国有林和公益林,天然林面积为50370hm2,占廊道总面积的83.2%。通过分析认为,在勐养和勐腊两个子保护区之间建立生物多样性廊道切实可行。

Promotion and maintaining connectivity of habitats among existing isolated habitat patches are one of the funda- mental stra＇tegies to combat impacts of habitat fragmentation on local biodiversity. Suitability of the areas between Mengyang Sub--reserve and Mengla Sub--reserve of Xishangbanna National Nature Reserve as part of biodiversity conservation corridor is assessed with assistance of the spatial analysis module of GIS software （Arcgis 10）. Based on the analysis, a biodiversity conservation corridor is proposed for the tow sub-reserves. The proposed corridor is 80km in length and 3～17km in width with a total area of 60595 hm^2 , and it is backboned by the existing state forest or/and conservation forest. In the corridor natural forest covers 50370hm^2 , and takes up 83.2%. The study shows that it is feasible to have a biodiversity conservation corridor between Mengyang Sub--reserve and Mengla Sub--reserve.