本文關(guān)鍵詞：地勢起伏度對三峽庫區(qū)人口及經(jīng)濟發(fā)展水平的影響，由筆耕文化傳播整理發(fā)布。

地勢起伏度對三峽庫區(qū)人口及經(jīng)濟發(fā)展水平的影響

IMPACT OF RELIEF AMPLITUDE ON POPULATION AND ECONOMIC DEVELOPMENT IN THE THREE GORGES RESERVIOR

[1] [2] [3]

YU Hui1＇2 ,DENG Wei1 ,LIU Shao-quan1 （1. Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041 ,China~ 2. University of Chinese Academy of Sc

[1]中國科學院/水利部成都山地災害與環(huán)境研究所,四川成都610041; [2]中國科學院大學,北京100049

文章摘要：在1：10萬三峽庫區(qū)DEM的基礎(chǔ)上，采用窗口分析等方法提取了地形起伏度，利用均值變點分析方法確定三峽庫區(qū)地勢起伏度的最佳統(tǒng)計單元是0．15km。。首次繪制了基于最佳統(tǒng)計單元的三峽庫區(qū)地勢分布圖，確定地形起伏度是影響三峽庫區(qū)人口分布和經(jīng)濟發(fā)展的重要因素之一。在系統(tǒng)分析了三峽庫區(qū)地形起伏度的分布規(guī)律基礎(chǔ)上，選擇城鎮(zhèn)化率、農(nóng)村居民恩格爾系數(shù)、經(jīng)濟密度、人口密度等指標，定量揭示地形起伏度對人口和經(jīng)濟發(fā)展的影響。結(jié)果顯示三峽庫區(qū)的地形總體以起伏山地為主。地形起伏度與人口密度、經(jīng)濟密度呈極顯著的負相關(guān)，地勢起伏度大的區(qū)域，人口密度較小，經(jīng)濟發(fā)展相對滯后，農(nóng)村居民生活相對貧困。地勢起伏度小的區(qū)域，人口密度較大，經(jīng)濟相對發(fā)達。這對認知山區(qū)人口和經(jīng)濟的空間格局，將三峽庫區(qū)資源開發(fā)利用以及產(chǎn)業(yè)布局在適度的地勢起伏度范圍，對于有效進行三峽庫區(qū)資源開發(fā)、促進區(qū)域經(jīng)濟效益最大化具有重要的參考價值。

Abstr：The method of window analysis was used to obtain the relief amplitude of Three Gorges Reservoir based on 1：100,000 DEM. Through mean change-point analysis method,the optimal statistical unit of relief amplitude is determined as 0.15 km2 in the Three Gorges Reservoir. It is the first time to draw the relief amplitude map of the Three Gorges Reservoir based on optimum statistical unit, and relief amplitude is identified as one of the important factors influencing the population distribution and the economic development in the Three Gorges Reservoir. Based on analyzing the distribution of relief amplitude, four factors such as urbanization, Engel＇s coefficient of rural residents, economic density and population density were chosen to reveal quantitatively how the relief amplitude influences the population and economic development. The results show that the Three Gorges Reservoir Area was mainly covered by undulating mountains,accounting for 63.83% of the total area. The flat dam,platform and hills accounted for 36.17% of the total area. Through correlation analysis, it is found that the relief amplitude had a significant negative correlation to economic density and population density with a correlation coefficient of 0. 883. The relationship between relief amplitude, population and economic development was studied by mathematic modeling. Through comparative analysis of different models and apparent test for parameters, the optimum models and the analysis results were as follows. The association between relief amplitude and population density was better modelled by logarithmic model Y=- 306. 051n（x）＋ 1746.2 （R2 =0. 7164）. The association between relief amplitude and economic density was better modelled by exponential lin

文章關(guān)鍵詞：

Keyword：:relief amplitude the Three Gorges Reservior optimum statistical unit

課題項目：國家自然科學基金項目（41101552;41071350）

作者信息：會員可見

  本文關(guān)鍵詞：地勢起伏度對三峽庫區(qū)人口及經(jīng)濟發(fā)展水平的影響，，由筆耕文化傳播整理發(fā)布。