贵州巴拉河流域乡村聚落空间格局及其驱动机制研究

Study on the Spatial Distribution Characteristics and Driving Mechanisms of Rural Settlements in the Bala River Basin, Guizhou Province

  • 摘要: 文章基于实地调研和地理空间数据,运用 ArcGIS 软件的空间分析和形状指数、平均最近邻分析等方法,探究贵州巴拉河流域乡村聚落空间格局及其驱动机制。结果表明:1)巴拉河流域乡村聚落平面以带状或指状为主,背山面水而居;聚落选址趋向于自然环境的区系过渡地带,以获取良好的资源;流域内聚落密度中部密南北疏,整体为聚集模式,自上而下呈现均匀—聚集—随机的分布形式;2)聚落的分布与高程、坡度、交通等具有明显正相关性,主要分布在海拔 700~900m,坡度 6°~25° 的低山丘陵地区,靠近河流和交通要道。

     

    Abstract: Based on field research and geospatial data of rural settlements in the Bala River Basin, Guizhou Province, this article utilizes spatial analysis tools of ArcGIS and the methods of shape index and average nearest neighbor analysis to explore the spatial pattern of rural settlements and their driving mechanisms in the Bala River Basin, Guizhou Province. The results indicate that: 1) The rural settlements in the Bala River Basin are primarily characterized by a strip or finger-like shape, situated on a hill facing the water. Settlement site selection tends to be in the transitional zone of the natural environment in order to obtain favorable resources. The settlement density within the watershed is dense in the center and sparse in the north and south, exhibiting an overall aggregation pattern, with a distribution form that ranges from uniform to aggregation to random from upstream to downstream. 2) The distribution pattern of the settlements has a distinct positive correlation with elevation, slope, and transportation. They are primarily distributed in low hill areas with an elevation of 700~900 meters and a slope of 6~25 degrees, and are located near rivers and transportation routes.

     

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