秦安县农村居民点空间分布景观格局分析  

Landscape Pattern Analysis of Qin'an Rural Settlements Spatial Distribution

作　　者：从忆波[1] 刘伟圣[1] 

机构地区：[1]兰州大学资源环境学院,甘肃兰州730070

出　　处：《地理空间信息》2011年第5期90-93,166,共4页Geospatial Information

基　　金：国家自然科学基金资助项目(41061017)

摘　　要：基于RS与GIS技术,以2008年甘肃省秦安县SPOT遥感影像为数据源,主要选取斑块面积、斑块数、平均斑块面积、斑块大小变异系数、斑块大小标准偏差、平均形状指数、平均周长-面积比、平均斑块分维数8个景观指数,从居民点用地、规模、形态、分布等方面进行景观空间格局分析。结果表明:秦安县农村居民点分布特点受坡度、坡向、高程、河流、道路和农耕用地等因素的综合影响,整体表现出斑块数量多、规模较小,分布稀疏零散,大部分交通不便利,分维数小、斑块稳定的景观格局。居民点主要集中在10～15°坡度带、东向和东南方向、1 601 m～1 750 m高程带上;农村居民点分布显示出较强的交通取向和河流取向。Based on RS and GIS,this paper acquired majority data by SPOT images(2008) of Qin'an County,Gansu Province.In this paper area of patches,number of patches,mean patch area,patch size coefficient of variation,patch size standard deviation,mean shape index,mean perimeter-area ratio and mean patch fractal dimension were calculated,in order to analyze proportions of rural residential land and scales,fractal dimension,distribution of rural settlements.The results indicated that: the distribution pattern of rural residential land had important relationship with slope,elevation,aspect,agricultural land,rivers and roads etc and present some features like much patch numbers,small scales,fragmented distribution,inconvenient traffic conditions,small fractal dimension indices and stable patch.The residential area mainly concentrated in which ranging from 10°to 15°,direction of east to southeast,and between 1 601~1 750 m elevation belt.The countryside residential area distribution demonstrated the strong transportation orientation and the rivers orientation.

关 键 词：农村居民点 空间分布 景观格局 黄土丘陵沟壑区 秦安县 

分 类 号：P208[天文地球—地图制图学与地理信息工程]