干旱区绿洲农村居民点景观格局演变及机制分析

发布时间：2018-03-31 22:36

本文选题：农村居民点　切入点：景观格局演变　出处：《地理研究》2016年04期

【摘要】：基于1987年、2002年、2013年三期Landsat TM、ETM+、OLI遥感影像提取研究区农村居民点时空分布信息,利用GIS空间分析、景观指数分析及多元线性回归分析干旱区绿洲农村居民点景观演化特征及驱动机制。研究表明:1农村居民点集中分布在绿洲内部平原区,其中城市周边及沿河道、道路是居民点空间聚集较明显的区域。2 1987-2013年农村居民点面积增长较形状变化更为显著。新建居民点和旧居民点边界扩张是导致研究区农村居民点面积显著增长主要原因,且在不同时空区域表现出不同的增长方式;居民点形状以矩形和近圆形居多,条带型较少。3通过对居民点景观演变机制进行分析,发现城市辐射距离、水源地远近及距离道路远近是影响农村居民点景观变化的首要因素,其次是人口规模,最后才是区域经济的发展。
[Abstract]:Based on the spatial and temporal distribution information of rural residential areas in the study area from three issues of remote sensing images of Landsat TMMs in 1987, 2002 and 2013, the spatial distribution of rural settlements in the study area was analyzed by using GIS spatial analysis.Landscape index analysis and multiple linear regression analysis on landscape evolution characteristics and driving mechanism of oasis rural settlements in arid area.The study shows that the rural residential area of 1: 1 is concentrated in the inner plain of oasis, and the increase of rural residential area is more remarkable than the change of shape in the area around the city and along the river. The road is the region where the spatial concentration of residential area is obvious. 2. 1987-2013.The expansion of the boundary between the new and the old residential areas is the main reason for the significant increase of rural residential areas in the study area, and shows different growth patterns in different space-time areas, and the shape of residential areas is mostly rectangular and nearly circular.By analyzing the evolvement mechanism of residential landscape, it was found that the radiation distance, the distance of water source and the distance from road to road were the primary factors affecting the landscape change of rural residential areas, followed by the population scale.Finally, the development of regional economy.
【作者单位】：兰州大学资源环境学院;西南科技大学土木工程与建筑学院;
【基金】：国家自然科学基金项目(41471163)
【分类号】：F321.1;C912.82

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