摘要:以国家扶贫开发重点县山阳县为例，采用遥感与地理信息技术对研究区的生态脆弱性进行定量评价，并构建以行政村为单元的经济贫困评价指标体系，以此分析研究区生态脆弱性与经济贫困耦合协调度的空间分异特征。研究结果表明：①山阳县生态脆弱性整体处于中等偏高水平，生态脆弱性高的地区集中分布在人类活动频繁的河川地带和水土流失严重的低山区；②贫困程度整体较深，地形条件、资源丰度、交通通达性及经济区位的综合差异形成了山阳县经济贫困的空间分布格局；③将山阳县生态脆弱性与经济贫困的耦合关系分为失调共损型、失调环境滞后型、失调经济滞后型、协调同步型、协调环境滞后型及协调经济滞后型六种类型，协调同步型行政村比例仅为13.0%，生态脆弱性与经济贫困的耦合协调度整体较低；④失调共损型、协调同步型及协调环境滞后型空间分布较分散，失调环境滞后型、失调经济滞后型及协调经济滞后型有明显的集聚区，失调环境滞后型和协调经济滞后型集中分布在低山河谷区，失调经济滞后型集中分布在海拔1000 m以上的偏远山区。



Abstract:Shanyang County is one of the key counties of national poverty alleviation in Qingling-Dabashan contiguous poor areas. Shanyang County was used as a study area, and the ecological vulnerability index based on remote sensing and geographic information methods was assessed. In addition, a village-level poor economic evaluation index system was constructed, and the level of economic poverty of 239 villages in the study area was evaluated. Based on this, the coupling coordination degree of ecological vulnerability and economic poverty were evaluated, and the spatial variability of the coupling coordination degree was analyzed in the study area. The results showed that the overall vulnerability of Shanyang County was above the intermediate level, and the areas with high ecological vulnerability were mainly distributed in the valley width and strath terrace with frequent human activities and serious soil erosion. The overall poverty level in Shanyang County was high, and the terrain conditions, abundance of resources, traffic accessibility, and economic locations all contributed combined effects in the spatial distribution pattern of economic poverty in Shanyang County. The coupling coordination degree of ecological vulnerability and economic poverty were divided into six types. They included economic environmental common damage, economic environmental damage, economic damage, synchronous development, environmental lag, and economic lag type. The percentage of the synchronous development type was only 13%, and the overall coupling coordination degree of ecological vulnerability and economic poverty was low. The economic environmental common damage type, synchronous development type, and environmental lag type had a scattered distribution. The economic damage type, economic environmental damage type, and economic lag type were significantly concentrated, and the economic damage type and the economic lag type had distributions centered in the valley width and strath terrace, whereas the economic environmental damage type was distributed in the remote mountainous area. Based on the construction of the evaluation index system of ecological vulnerability and poverty, and applying the coupling theory to analyze the coupling coordination degree of spatial distribution at the county-village level, the goals of this study were to explore the cause for the mechanism of ecological vulnerability and poverty, and to improve the ecological environment in the Qingling-Dabashan contiguous poor areas. It is of great significance to target the regional poverty alleviation policy and realize sustainable development.





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