Relations between Mountain Settlements and Geographic Factors in Three Gorges Reservoir Area  

作　　者：罗勇 于慧 王勇 郑志军 王晓 

机构地区：[1]Key Laboratory of G eological Spatial information Technology of Ministry of Land and Resource ,Chengdu University of Technology [2]The Institute of Mountain Hazards and Environment,Chinese Academy of Sciences [3]Sichuan Institute of Land Planning and Survey [4]The Geological Environment Monitoring Station [5]China Southwest Geotechnical Investigation & Design Institute Co . ,Ltd.

出　　处：《Journal of Donghua University(English Edition)》2015年第4期571-576,共6页东华大学学报（英文版）

基　　金：National Natural Science Foundation of China(No.41101552);West Light Foundation of the Chinese Academy of Sciences(No.2013);Geographic National Condition Monitoring Engineering Research Center of Sichuan Province,China(No.GC201418);Key Laboratory of Geo-spatial Information Technology of Ministry of Land and Resources Open Fund,Chengdu University of Technology,China(No.KLGSIT2015-08)

摘　　要：Compared with previous studies,the research attempted to establish the appropriate quantitative models to explain the relations between settlement density Diand geographic factors,which could make a scientific guidance to the mountain settlements planning. Five factors,including slope,relief amplitude,distance to river, distance to cultivated land, and distance to road, were identified through principal component analysis( PCA). The inherent relations between five factors and Di( settlement density)were modeled by regression analysis. The results are as follows.( 1) The associations among Diand slope,relief amplitude,river,road are better modeled by the exponential decay line; with the buffer distance of slope, relief amplitude, distance to river and distance to road increasing, Didecreases.( 2) The associations between Diand cultivated land are better modeled by the quadratic polynomial line; with the buffer distance of cultivated land increasing,Diincreases first, and then dramatically decreases.( 3) The area within 500 m from the road,within 500 m from the cultivated land,within 1 600 m from the river,within the relief amplitude of 30-200 m,and the area within the slope of 0°-10° are the fitting land for settlements,and it is very important to lay the mountain settlements on those optimized regions.Compared with previous studies,the research attempted to establish the appropriate quantitative models to explain the relations between settlement density Diand geographic factors,which could make a scientific guidance to the mountain settlements planning. Five factors,including slope,relief amplitude,distance to river, distance to cultivated land, and distance to road, were identified through principal component analysis（ PCA）. The inherent relations between five factors and Di（ settlement density）were modeled by regression analysis. The results are as follows.（ 1） The associations among Diand slope,relief amplitude,river,road are better modeled by the exponential decay line; with the buffer distance of slope, relief amplitude, distance to river and distance to road increasing, Didecreases.（ 2） The associations between Diand cultivated land are better modeled by the quadratic polynomial line; with the buffer distance of cultivated land increasing,Diincreases first, and then dramatically decreases.（ 3） The area within 500 m from the road,within 500 m from the cultivated land,within 1 600 m from the river,within the relief amplitude of 30-200 m,and the area within the slope of 0°-10° are the fitting land for settlements,and it is very important to lay the mountain settlements on those optimized regions.

关 键 词：three G orges RESERVOIR area SETTLEMENT AGGREGATION degree spatial distribution characteristic 

分 类 号：K901.8[历史地理—人文地理学]