摘要
基于2016年土地变更调查数据库提取居民点空间分布信息,结合定性定量分析法、GIS空间分析、景观格局指数等方法,以“极化效应”与“亲水效应”为契机,分析极端干旱区皮山县绿洲农村居民点分布的空间异质性。研究表明,研究区居民点集中分布于乡镇中心腹地,随着辐射半径的增大,居民点规模逐渐降低,空间集聚较为明显。团状型乡镇中心腹地呈现高值(HH)集聚现象,随着辐射半径的增大,逐渐呈现高值主要由低值围绕的异常值(HL)和低值主要由高值围绕的异常值(LH)聚类情况,线型居民点分布大多为随机分布。越靠近行政中心的居民点布局形态越规则化、集中化、巨大化、空间连接程度越高,表现出较为明显的“极化效应”。随河流水源地辐射半径的增大,研究区居民点逐渐呈现集中化、复杂化,居民点空间连接度逐渐增高;线型居民点面积离散程度逐渐降低,面积悬殊逐渐增大;团状型居民点面积离散程度逐渐升高,面积悬殊逐渐增大。
Based on the 2016 Land Change Survey Database to extract the spatial distribution information of residential areas,combined with qualitative and quantitative analysis methods,GIS spatial analysis,landscape pattern index and other methods,with the“polarization effect”and“hydrophilic effect”as an opportunity,the spatial heterogeneity of rural settlements distribution in Pishan county oasis in extremely arid areas is analyzed.The research shows that the residential areas in the study area are concentrated in the hinterland of the township center.With the increase of the radiation radius,the scale of the residential area gradually decreases,and the spatial agglomeration is more obvious.The HH agglomeration phenomenon appears in the hinterland of the cluster-type township center.With the increase of the radiation radius,the clustering of HL and LH outliers is gradually presented,and the distribution of linear residential sites is mostly random.The closer the layout of the residential areas closer to the administrative center is,the more regular,centralized,and the more spatially connected,the more obvious the“polarization effect”.With the increase of radiation radius of river water source,the residential areas in the study area are gradually concentrated and complicated,and the spatial connection degree of residential areas is gradually increasing;The dispersion of linear residential area is gradually decreasing,and the area disparity is gradually increasing;The degree of dispersion of shaped residential area gradually increases,and the area disparity increases gradually.
作者
徐彩芳
曹月娥
许仲林
XU Cai-fang;CAO Yue-e;XU Zhong-lin(College of Resources and Environmental Sciences,Xinjiang University,Urumqi 830046,China;Key Laboratory of Oasis Ecology,Ministry of Education,Urumqi 830046,China;School of Environmental and Geographical Sciences,Shanghai Normal University,Shanghai 200234,China)
出处
《湖北农业科学》
2020年第14期63-68,共6页
Hubei Agricultural Sciences
基金
国家青年基金项目(41601572)。
关键词
极端干旱区
居民点整治
极化效应
亲水效应
空间分析
extreme arid area
residential settlement rectification
polarization effect
hydrophilic effect
spatial analysis
