关键词: 乡村聚落, 空间聚集, GIS, 茂县, 岷江上游地区

Abstract:

In this article,taking Maoxian County in Sichuan Province as a case study area,the ETM image and the national geographical database of China (including contour line,river and road) at the scale of 1〖DK1〗∶250 000 as the major data sources,by judging from the image and investigation on the spot to obtain the spatial information of rural settlements,a quantitative analysis on the spatial centralization of rural settlements in the upper Minjiang River Basin was made based on the spatial analysis technique of GIS.It is found that 586% rural settlements in the study area relatively centralized in certain space while the others decentralized spatially.Most settlements (782%) located in the mountain area of 1 500~2 700 m altitude,and about 552% in the dry valley area of 1 200~2 200 m altitude.About 80% settlements had their slopes over 15°Most settlements had favorable status of water resource and traffic,and gathered approximately along to the traffic network in the near space while to the river system in the far as to the separated buffer space of river and road network.It is concluded that few rural settlements in the study area were inadvisable for wellbalanced human living and environment protection,against which reasonable countermeasures should be established by further study.

Key words: rural settlement, spatial distribution, GIS, Maoxian County, upper Minjiang River Basin