基于RS＆GIS的西双版纳生态安全评价

生态安全评价是生态安全研究的核心内容之一。生态安全评价中涉及大量的空间信息，而遥感为信息的快速地获取提供了有力的支持，地理信息系统中的空间分析方法则对各评价要素进行空间综合分析，并能揭示研究区域的生态安全全空间差异。本文通过对遥感、地理信息系统和层次分析方法的综合集成，构建了生态安全评价的空间多级加权叠加模型，并运用该模型方法，对西双版纳2000年的生态安全空间分布状况进行了分析评价。结果表明，西双版纳2000年的生态环境安全指数平均为58．74，最大值为98．81，最小值为18．68。从空间分布上来看，高海拔区域的生态安全状况比低海拔区域的生态安全状况要好；中东部地区的生态安全状况较西部明显要好；大坡度区域的生态安全状况较差。

Assessment on Ecological Decurity of Xishuangbanna Based on RS ＆ GIS

Ecological security assessing is one of the key contents of ecological security research. Ecological security assessment needs to deal with a large of spatial information. Remote sensing technique provides forceful support for environment information collection. Spatial analysis of Geographical Information System can carried out comprehensive analysis on every element and make known the ecological security spatial differences of study area. The paper established the methd of multi-level weight overlay based on RS, GIS and AHP. Appling the methed, we assessed the ecological security of Xishuangbanna in 2000. The result shows that the index of Xishuangbanna ecological security is 58.74 averagely, maximum value is 98.81,minimnm value is 18.68. On the spatial distribution, the situztion of high altitude region is better than low altitude region; middle eastern part better obviously than in the western; big slope region is relatively poor.