工布自然保护区生态敏感性评价及功能区划

以典型青藏高原的自然保护区生态敏感性评价为例,针对工布保护区存在的生态环境问题及其影响因素,构建了1套适合该区的生态敏感性评价指标体系,并运用层次分析法、聚类分析及GIS技术,对保护区生态敏感性进行评价和功能分区研究.其研究表明:工布自然保护区生态敏感性整体偏高,且西部地区高于东部,其中极敏感区和高度敏感区的面积占保护区总面积的65.6%,中度敏感区占26.8%,轻度敏感区占6.7%,不敏感区(米瑞乡)占0.9%;依据生态敏感性综合评价结果划分的生态功能区与采用定性方法划分的原保护区功能区结果基本一致,表明本文所构建的评价指标体系适用于类似高原地区自然保护区的生态敏感性评价,评价结果可用于保护区的功能区划.

Eco-sensitivity Evaluation and Functional Zoning of Gongbu Nature Reserve in Tibet

In view of the existing environmental problems of the Gongbu nature reserves and its influencing factors,the evaluation index system of eco-sensitivity is studied and eco-sensitivity also assessed by use of the analytic hierarchy process(AHP),cluster analysis and GIS technique.Results show that the Eco-environment of Gongbu Nature Reserve is more sensitive,and the sensitivity of western region is higher than the east region.Higher sensitivity area accounts for 65.6% of the total area,a mild sensitivity area 26.8%,lower sensitivity area 6.7%,non-sensitivity area 0.9%.On basis of comprehensive eco-sensitivity evaluation results,the ecological function regions are divided,and which is similar to the original qualitative division results.So the results show that this the valuation index system can be used to the eco-sensitivity evaluation of nature reserves,and the evaluation results used for eco-function region division of the natural reserve in plateau area.