贫困与土地利用变化时空耦合关系分析——以田阳县为例

Analysis of Time-space-coupling Relationship between Poverty and Land Use Change——A Case Study of Tianyang County

以村级为尺度,基于多维贫困理论构建多维贫困测算指标体系并进行贫困度评价。选取耕地和未利用地2个对农村经济影响较大的地类测算田阳县贫困村2005—2015年土地动态度,分析区域土地利用时空变化情况;运用容量耦合系数模型计算贫困度与土地利用变化的耦合情况,并运用空间自相关技术分析其空间耦合分异特征。结果表明:52个贫困村中,耕地利用变化与贫困处于高度耦合阶段以上的贫困村有22个;未利用地变化与贫困处于高度耦合阶段以上的贫困村有36个,说明土地利用与贫困的时空耦合关联度大。其中,耕地利用变化与贫困有反方向的耦合关系,则未利用地与贫困有正方向的耦合关系。分析结果可为提出差别化土地扶贫政策服务。

Based on the village level,using the multidimensional poverty theory,the evaluation index system was constructed to evaluate the poverty degree. Cultivated land and unused land which had great effect on rural economic were selected,the land dynamic degree in Tianyang County during 2005-2015 was measured,the land use change was analyzed in the region. Calculation of poverty and land use change using the coupling capacity coupling coefficient model,and the spatial differentiation characteristics of coupling was analyzed by using the spatial autocorrelation technique. The results showed that: among 52 poor villages,there were 22 villages that their land use and poverty was in high coupling stage,only coupling relationship between unused land and proverty of 36 villages was in the low coupling stage,indicating that land use and spatial coupling degree of poverty. Among them,the coupling relationship between the change of cultivated land use and poverty has a negative direction,the coupling relationship between unused land and poverty has a positive direction. The results of the analysis can be used for the differential land poverty alleviation policy.