摘要
基于苗岭山区乡村聚落及地理国情要素数据,采用核密度分析、平均最近邻指数等方法,定量分析苗岭山区乡村聚落空间分布格局特征与梯度规律。结果表明:(1)苗岭山区乡村聚落整体呈“北密南疏、北多南少”的空间分布格局,局部分别以西部凯里市和东北部天柱县为中心呈现两个明显的核状高值聚集区;(2)研究区乡村聚落总体呈“靠山住坡临水”的分布特点,主要分布于509~1041 m高程范围和16°~25°坡度范围内,且距河流1 km以内;(3)苗岭山区乡村聚落空间布局的公路指向性不明显,村级与县级行政中心对乡村聚落空间分布影响较明显。64.12%的乡村聚落分布在距公路1 km以外,50%以上的乡村聚落分布在距离村行政中心1 km的范围内,72.82%的聚落在距县行政中心20 km范围以内;(4)不同因素对苗岭山区乡村聚落空间分布影响有显著差异性。高程、坡度、坡位、行政中心的空间自相关属高值聚集,即地形与行政中心对苗岭山区乡村聚落空间分布格局影响较大。
Based on the data of rural settlements and geographic state elements in the Miaoling Mountains,the spatial distribution pattern of rural settlements in the Miaoling Mountains is quantitatively analysed using the methods of kernel density analysis and the average nearest neighbour index and the gradient pattern.The results showed that:(1)The overall spatial distribution pattern of rural settlements is“dense in the north and sparse in the south,more in the north and less in the south”,with two obvious nucleated high-value clusters centred on Kaili City in the west and Tianzhu County in the northeast respectively.(2)The rural settlements in the study area are generally characterised by the distribution of“hills and slopes facing water”.They are mainly located within the elevation range of 510~1041 m and the slope range of 16°~25°,and within 1 km from the river.(3)The spatial layout of village settlements is not obvious in terms of road directionality,and the influence of village and county administrative centres on the spatial distribution of village settlements is more obvious.64.12%of village settlements are located beyond 1km from the road,more than 50%of village settlements are located within about 1km of the village administrative centre,and 72.82%of settlements are within 20 km of the county administrative centre.(4)There is significant variability in the influence of different factors on the spatial distribution of rural settlements in the Miaoling Mountains.The spatial autocorrelations of elevation,slope,slope position and administrative centre are clustered at high values,i.e.topography and administrative centre have a greater influence on the spatial distribution pattern of rural settlements in the Miaoling Mountains.
作者
覃颖
罗光杰
李阳兵
廖晶晶
谭秋
田爽
QIN Ying;LUO Guangjie;LI Yangbing;LIAO Jingjing;TAN Qiu;TIAN Shuang(School of Geographic and Environmental Science,Guizhou Normal University,Guiyang 550025,China;a.Provincial Key Laboratory of Valley Geographic State Monitoring,Guizhou Education University,Guiyang 550018,China;Mountain Research Institute,Guizhou Education University,Guiyang 550018,China)
出处
《地域研究与开发》
北大核心
2023年第2期130-136,共7页
Areal Research and Development
基金
国家自然科学基金项目(41461041)
贵州省科技项目基金(黔科合基础[2020]1Y157)
贵州省科技项目基金(黔科合支撑[2018]2200)。
关键词
乡村聚落
空间格局
梯度效应
苗岭山区
rural settlements
spatial pattern
gradient effects
Miaoling Mountain
