本文選題：瀾滄江-湄公河　切入點：人口分布　出處：《山地學報》2014年01期 　論文類型：期刊論文

【摘要】：基于90 m×90 m數(shù)字高程模型(DEM)和1 km×1 km的人口密度柵格數(shù)據(jù),采用GIS空間分析與數(shù)理統(tǒng)計方法,研究了瀾滄江-湄公河流域的人口分布格局及其與高程、坡度、坡向和地形起伏度的關(guān)系。結(jié)果表明:1.瀾滄江-湄公河流域人口分布呈北疏南密的基本格局,人口最為密集的區(qū)域位于南端的湄公河三角洲,源頭雜多縣則是大片無人區(qū);2.瀾滄江-湄公河流域人口密度隨海拔由低到高經(jīng)歷了一個急降緩升又下降至尖滅的變化過程,人口總量隨海拔呈現(xiàn)倒指數(shù)增長變化;3.瀾滄江-湄公河流域80%強的人口集中分布在坡度≤2°的平坦區(qū)域,當坡度達到38°時,人口累積曲線趨于平穩(wěn);4.瀾滄江-湄公河流域各坡向人口分布較為均衡,坡向?qū)θ丝诜植嫉挠绊懖伙@著;5.瀾滄江-湄公河流域人口密度與地形起伏度成倒指數(shù)關(guān)系,地形起伏度對人口分布的影響較為顯著,流域內(nèi)大部分人口分布于低起伏地區(qū)。
[Abstract]:Based on the population density grid data of 90 m 脳 90 m digital elevation model and 1 km 脳 1 km, the population distribution pattern, elevation and slope of Lancang-Mekong River basin are studied by using GIS spatial analysis and mathematical statistics method. The results show that the population distribution of Lancang-Mekong River basin is a basic pattern of north, sparse and southern density, and the most densely populated area is located in the Mekong River Delta at the southern end of the river. The source of Zadou County is a large area of no man's land. The population density of the Lancang-Mekong River basin changes from low to high altitude through a rapid decline and then a decline to the peak. The total population increases exponentially with elevation. The population of the 80% strong people in Lancangjiang-Mekong River basin is concentrated in flat area with slope 鈮，

本文編號：1570067