摘要
基于湖南省湘乡市18个乡镇农村居民点用地需求调查统计数据,利用景观格局指数法、核密度估计法、空间自相关分析法等识别农村居民点用地需求空间分布特征,并运用地理加权回归模型进一步挖掘关键影响因素。研究发现:从规模特征来看,平均每个乡镇农村居民点用地需求规模为32.14 hm^(2),总体上湘乡市南部农村居民点用地需求的规模大于北部;从景观形态特征来看,各个乡镇农村居民点用地需求的平均景观形状指数为1.582,图斑较为规整;从空间集聚特征来看,湘乡市农村居民点用地需求平均核密度为1.38个/km^(2),南部的核密度值总体上高于北部;从空间自相关分析来看,市域尺度上农村居民点用地需求具有显著的集聚特征,HH型区域主要集中在西部地区,HL型和LH型区域只在潭市镇、毛田镇、泉塘镇等零星分布,LL型区域主要集中于中北部区域;4种影响因素中农村居民点到道路的最近距离的影响程度最高,与道路的距离直接影响着村民们的出行,是村民们建房选址的首要考虑因素。
Based on the survey statistics of land use demand for rural settlements in 18 towns and townships of Xiangxiang City,Hunan Province,this study uses the landscape pattern index method,kernel density estimation method,spatial autocorrelation analysis method,etc.to identify spatial distribution characteristics of land use demand for rural settlements,and further explores key influencing factors by using the geographically weighted regression model.The study finds that,from the perspective of scale characteristics,the average scale of land use demand for rural settlements in each town or township is 32.14 hm^(2),and in overall the scale of land use demand for rural settlements in the south of Xiangxiang City is greater than that in the north.From the perspective of landscape morphological characteristics,the average landscape shape index of land use demand for rural settlements in each town or township is 1.582,meaning that the patch shape is relatively regular.From the perspective of spatial agglomeration characteristics,the kernel density of land use demand for rural settlements in Xiangxiang City is averagely 1.38 per km^(2),and is generally higher in the south than in the north.From the perspective of spatial autocorrelation analysis,land use demand for rural settlements at the city level has a significant clustering characteristic;HH type areas are mainly concentrated in the western region,HL type and LH type areas are only scattered in Tanshi Town,Maotian Town,Quantang Town,etc.,and LL type areas are mainly concentrated in the central and northern regions.Besides,among the four influencing factors,the nearest distance from the rural settlement to the road has the highest degree of influence,because the distance to the road directly affects villagers’travel,and is the primary consideration for villagers to select the site to build houses.
作者
李新智
傅安洲
周楷淳
LI Xin-zhi;FU An-zhou;ZHOU Kai-chun(School of Geographical Sciences,Hunan Normal University,Changsha 410081,PRC)
出处
《湖南农业科学》
2023年第2期85-92,共8页
Hunan Agricultural Sciences
基金
湖南省自然资源科技项目(2021-42)。
关键词
农村居民点
景观格局指数
核密度估计
空间自相关分析
地理加权回归模型
湘乡
rural settlements
landscape pattern index
kernel density estimation
spatial autocorrelation analysis
geographically weighted regression model
Xiangxiang
