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首页> 外文会议>Conference on Ecological Informatics and Ecosystem Conservation >The Ecological Vulnerability Evaluation in Southwestern Mountain Region of China Based on GIS and AHP Method
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The Ecological Vulnerability Evaluation in Southwestern Mountain Region of China Based on GIS and AHP Method

机译：基于GIS和AHP方法的中国西南山区生态脆弱性评价

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The ecosystem seriously degraded in the southwestern mountain region of China is very vulnerable which has a great impact on regional sustainable development. In this paper, the ecological vulnerability index (EVI) including 13 factors is established synthetically reflecting ecological sensitivity (ES), natural and social pressure (NSP), and ecological recovery capacity (ERC) based on HPA method, and five grades for each factors is classified by expert consultation including potential grad, slight grade, light grade, medial grade and heavy grade. By the means of GIS spatial analysis, cluster analysis and spatial autocorrelation analysis, the regional ecological vulnerability is deeply analyzed in regional level, county level and in grade level. The conclusion is as follows. From the regional level, the ecological condition in southwest of China is relative stable reflected by area proportion of heavy and medial grade significantly less than the area proportion of potential, slight and light grade, which is accompanied by the heavy grade of ES, EP and EVI mainly concentrated in the east-southeast of whole region and four centers with high ecological recovery capacity. From county level, 152 counties are divided into two groups with centroid cluster method whose cluster level is determined by Cubic Clustering Criterion, Pseudo T-Squared Statistic, Semi-Partial R-Squared and Pseudo F Statistics. The first zone with high EVI locates in east-southeast region including 79 counties and the second one with forest, grassland, shrub as dominant land use type rules 73 counties in the west-northwest region where the disturbance from human activity is very scare. From grade scale, the clustering trend for EVI grades is apparent presented by global Moran' I about 0.6271 and the spatial adjacency is dominated by high-high and low-low relation significantly. From above, we can see that there exits the characteristics of regional division of ecological vulnerability in different level from west-northwest region to east-southeast region. So the study set a solid foundation for regional ecological restoration by applying research findings, which is obtained during the period National Key Technologies R&D Program of China during the 10th Five-Year Plan Period.
机译：在中国西南山区的生态系统中严重贬低，非常脆弱，对区域可持续发展有很大影响。在本文中，基于HPA方法的生态敏感性（ES），自然和社会压力（NSP）和生态恢复能力（ERC）建立了一种生态脆弱性指数（EVI），以及每个因素的五个等级由专家咨询分类，包括潜在的毕业，轻微等级，轻级，内侧等级和重型等级。通过GIS空间分析，集群分析和空间自相关分析，区域生态脆弱性在区域一级，县级和年级水平中深受分析。结论如下。从区域一级，中国西南部的生态条件相对稳定，由沉重和内侧等级的面积比例明显低于潜在，轻微和轻质等级的面积比例，伴随着ES，EP的重型等级EVI主要集中在整个地区东南部，四个中心具有高生态恢复能力。从县级，152个县分为两组，具有质心群集方法，其群集级别由立方体聚类标准，伪T平方统计，半部分R线和伪F统计决定。高伊世纪的第一区位于东东南部地区，包括79个县和第二个，其中森林，草原，灌木，作为主要的土地使用类型规则73县，在西北地区的人类活动的干扰非常恐慌。从级别规模，全球莫兰的IEVI成绩的聚类趋势是明显的，由全球莫兰语I约为0.6271，并且空间邻接是显着高低的低低关系的主导。从上文来看，我们可以看到，从西北地区到东东南地区的不同水平，从西北地区到东南地区的不同水平出现区域分工的特征。因此，该研究为区域生态恢复设定了一个坚实的基础，通过应用研究发现，该研究结果是在第10五年计划期间在中国国家重点技术研发计划中获得的。

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