苏北县域农村居民点空间分布格局与可达性研究——以徐州市丰县为例  

Study on Spatial Pattern and Accessibility of Rural Settlements in Northern Jiangsu——a Case Study of Fengxian,Xuzhou

作　　者：李保杰 陈莉[1] 顾和和 LI Bao-jie;CHEN Li;GU He-he(School of Geography&Geomatics and Urban-Rural Planning,Jiangsu Normal University,Xuzhou 221116,China;School of Environment Science and Spatial Informatics,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]江苏师范大学地理测绘与城乡规划学院,徐州221116 [2]中国矿业大学环境与测绘学院,徐州221116

出　　处：《土壤通报》2021年第2期306-313,共8页Chinese Journal of Soil Science

基　　金：江苏高校优势学科建设工程资助项目(PAPD);江苏高校哲学社会科学研究项目(2019SJA0918);江苏省教育科学“十二五”规划高教重点资助课题(B-a/2015/01/014);徐州市推动科技创新专项资金项目(社会发展-科技民生示范工程项目)(KC16SS089);江苏省大学生创新创业训练计划项目(201610320079Y);江省社科应用研究精品工程(14SWC-117);徐州市哲学社会科学研究课题(14XSZ-053);江苏师范大学研究生科研与实践创新计划项目(2020XKT034)。

摘　　要：以徐州市丰县2018年Landsat 8 OLITIRS影像为数据源,借助GIS空间分析技术,采用核密度、邻近度指数、分形模型和可达性模型,对研究区农村居民点的空间集聚特征、分形特征和生产、生活可达性进行分析。结果表明:(1)研究区居民点分布的总体密度约1.52个/km2,呈现出"北高南低,内高外低"的空间分布格局,居民点空间分布总体上呈聚集-随机分布状态;(2)研究区农村居民点呈现明显的分形特征,聚集维数为0.7541,表明丰县农村居民点由测算中心向外围呈逐渐衰减的变化趋势;(3)研究区各村生产生活可达性整体较好,生产生活可达性最好的区域面积占比为13.71%,主要集中在研究区中部常店镇、孙楼镇和凤城镇等交通便利、靠近集贸市场、医院和学校的区域;生产生活可达性较差和最差的区域面积占比为27.43%,主要分布在受"边际效应"影响的省际边缘区,其次分布在受到河流的阻隔作用的区域,使得上述区域的生产生活可达性较差。Based on Landsat 8 OLITIRS image in 2018,the models of kernel density,proximity index,fractal and accessibility were used to analyze the characteristics of spatial agglomeration,fractal,and accessibility to production and living facilities of rural settlements in Fengxian by GIS method.The results showed that:(1)The total density of the rural settlements distribution was about 1.52 km-2 and characterized by"higher in the north area and lower in the south area"and"higher inside and lower outside".The spatial distribution characteristic of rural settlements was aggregated-random.(2)The rural settlements showed the obvious fractal characteristics,with aggregation dimension of0.7541,which indicated that the rural settlements in Fengxian were gradually decreasing from measurement center to periphery.(3)The accessibility to production and living facilities of each village in the study area was better overall.The area with the best accessibility to production and living facilities accounted for 13.71%,mainly in the middle of the study area with convenient transportation,and nearing trade markets,hospitals and schools,including Changdian,Sunlou and Fengcheng.The area with worse and the worst accessibility to production and living facilities accounted for 27.43%,which was mainly distributed in the marginal zone affected by the"marginal effect"and the region obstructed by the river.

关 键 词：农村居民点 空间分布格局 可达性 丰县 

分 类 号：F324.1[经济管理—产业经济]