基于GIS的惠来县乡村聚落空间结构演变与驱动机理研究

A GIS-based Research on Space Structure Evolution and the Drive Mechanism of the Rural Settlement Research in Huilai County

选择广东省惠来县的乡村聚落为实证研究对象,以2006-2016年惠来县的遥感数据和DEM为数据源,采用GIS空间分析和数据处理方法分析2006-2016年惠来县乡村聚落空间结构的演变,并结合惠来县土地利用与经济数据建立Logistic回归模型分析乡村聚落空间结构演变的驱动机理.结果表明:惠来县乡村聚落空间形态类型主要表现为块状型,乡村聚落在空间上更加集聚,空间扩展显著;惠来县乡村聚落空间扩展存在明显的地区差异,中南部地区以高密度区且聚集,北部地区以低密度区较分散;惠来县乡村聚落空间结构演变与高程和坡度具有显著的负相关;惠来县乡村聚落空间结构演变受区位因素影响显著,以距道路500m为半径建立的缓冲区内乡村聚落点面积和数量均占主导地位,并随着时间推移有扩大趋势;惠来县乡村聚落空间结构演变受社会经济影响逐步增强;自然环境(高程与坡度)、区位(交通条件)以及社会经济(经济和人口)三方面驱动因子构成惠来县乡村聚落空间结构演变的驱动机理.

County of Hui Lai in Guangdong area was chosen as cases to study the distribution characteristics and influencing factors on the rural settlements with DEM and remote sensing data of 2006- 2016. Combined with the data of land use and economic the driving mechanism of the rural settlement spatial evolution with logistic regression model analysis in county of Hui Lai. The results show that： The rural settlement of space form type main show is block type,the rural settlements more concentration on the space,and space expanded significantly; The rural settlement with expand clear regional differences in county of Hui Lai,with high density and gathered in south central,northern region with low density area and scattered; The rural settlement of spatial evolution with the elevation and slope has significant negative correlation relationship in county of Hui Lai; The rural settlement of spatial evolution influenced by geographical factors is significantly,at 500 m radius away from the road in order to establish the buffer zone with point area and quantity are dominant and expand trend as time goes by of the rural settlement; The rural settlement of space structure evolution affected by social economy gradually strengthen in county of Hui Lai; The natural environment（ elevation and slope）,location（ traffic conditions）,and social and economic driving factors（ economic and population） are three aspects constitute drive mechanism of the rural settlement spatial structure evolution in county of Huilai.