快速城市化背景下乡村聚落变化的驱动力研究是乡村聚落演进规律的重要组成部分,是进行乡村聚落空间重构的重要依据。以三峡库区重要区重庆万州区为研究对象,选择库区蓄水前(1995年)和后三峡时代(2012年)为时间节点,进行乡村聚落空间演变特征的识别,并以村级范围内乡村聚落变化率为因变量,选用地形综合指数、道路、城区中心、三峡工程、人口变化率、农民人均收入变化率等12个因子为自变量,基于地理加权回归模型探索乡村聚落空间演变的驱动因素作用机理。结果表明:在村级范围内的乡村聚落变化率呈明显"东增西缓中减少"的空间分异特征;乡村聚落演变过程中,受自然环境、社会经济、政策制度等驱动因素综合作用,其作用范围和影响程度不同导致乡村聚落演变模式出现差别,根据驱动力作用程度和乡村聚落变化率值将研究区乡村聚落的空间演变分为自然演变、加速演变和剧烈演变等模式。研究结果可为库区新农村建设和乡村管理工作提供指导和借鉴。
In order to put New Country Construction into sustainable development,the spatial evolutional characteristics of rural settlement of this study area were analyzed and the relationship between spatial evolution and natural,social,economic or government regulation and control impacting factors was explored.In this paper,Wan Zhou district which is the more important example in the Three Gorges Reservoir area was selected as the study area,Based on 1995 and 2012,Then spatial evolution characteristics of rural settlement were built up by change rate in a village.Impacting factors of spatial evolution of rural settlement consisted of elevation,slope,major roads,country roads,city center and so on,which were compiled into a village domain.In this study,geographically weighted regression model( GWR) was established from global and local perspectives.The results showed that:1) the change rate of rural settlement in a village are showed obvious spatial differentiation characteristics about " East increasing,West slowly and middle reducing," the spatial differentiation;2) GWR could be used to explore spatial variation in the relations between rural settlement evolution and different impacts factors,providing more detailed information,while SLM could only explore somewhere relations from a global view;3) The GWR revealed both positive and negative correlations between rural settlement and impacting factors.Space evolutional patterns of the rural settlements in Wanzhou are divided into three types:natural evolution,accelerate evolution and intense evolution under the different impacting factors.Overall,economic,government regulation and control were the core motivation for spatial evolution of rural settlement in the studies area,which reflected the common characteristics of rural settlement in the Three Gorges Reservoir Area to some extent and provided some advices for the land management in the similar area.