盘县农村居民点空间分布特征及其地形地貌影响因素分析

发布时间：2018-04-11 15:59

本文选题：农村居民点 + 空间分布　；参考：《长江流域资源与环境》2017年12期

【摘要】：农村居民点空间分布及其影响因素的研究是乡村聚落地理的主要研究内容之一,也是GIS-RS应用的重要领域。运用核密度估计、变异系数(Cv)和景观格局指数,以盘县农村居民点为研究对象,研究其空间分布与景观格局特征,并侧重分析了地形地貌因素的影响。结果表明:(1)总体看,盘县农村居民点呈现出"中部、西北部密,南部、东北部疏"的分布格局,与研究区的平原、河谷和低-中海拔地区的分布相一致。(2)通过点模式分析(Point Pattern Analysis,PPA)发现,村级、乡镇级以及不同地形地貌分级3个尺度的农村居民点空间分布的Cv值都大于64%,均属于集聚型分布。(3)在各种地形地貌因素中,海拔、坡度和地形起伏度等是影响盘县农村居民点分布的关键因子;随着海拔的升高、坡度和地形起伏度的增加以及地貌的变化,农村居民点的集聚程度、用地面积、比重和不规则程度呈先增加后减少的趋势;75%以上的农村居民点分布在平均海拔、较小地形起伏度(50~100 m)、较低坡度(5°~15°)、南向坡向和小起伏山地区域。
[Abstract]:The study on the spatial distribution of rural settlements and its influencing factors is one of the main contents of rural settlement geography and an important field in the application of GIS-RS.Based on the kernel density estimation, coefficient of variation (CV) and landscape pattern index, the spatial distribution and landscape pattern characteristics of rural residential areas in Panxian County were studied, and the effects of topographic and geomorphological factors were emphatically analyzed.The results show that, in general, the rural residential areas in Pan County show a pattern of "middle, northwest, south and northeast sparse", and the plain of the study area.The distribution of valley and low- and medium-altitude area is consistent. 2) Point Pattern Analysis (PPA) found that village level,The CV value of the spatial distribution of rural residential areas at the township level and the three scales of different topographic and geomorphological classification is greater than 64, and all of them belong to the agglomeration distribution. (3) among the various landform and geomorphological factors, the elevation,Slope and topographic fluctuation are the key factors affecting the distribution of rural residential areas in Panxian County, and with the elevation of elevation, the increase of slope and topographic fluctuation and the changes of landforms, the agglomeration of rural settlements and the area of land use,The specific gravity and irregular degree showed a tendency of increasing first and then decreasing. More than 75% of the rural residential areas were distributed at the average altitude, with a smaller topographic fluctuation of 50 ~ 100 mb, a lower slope of 5 掳/ 15 掳, a southern slope and a small undulating mountainous area.
【作者单位】：中国矿业大学环境与测绘学院;
【基金】：教育部人文社会科学研究基金(14YJC840037) 科技基础性工作专项项目(2014FY110800)~~
【分类号】：C912.82

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