| 澜沧江流域居民点空间分布格局及影响因素研究 |
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| 引用本文： | 高星,姜鲁光,张蓬涛,杨艳昭.澜沧江流域居民点空间分布格局及影响因素研究[J].地理空间信息,2012,10(5):139-142. |
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| 作者姓名： | 高星 姜鲁光 张蓬涛 杨艳昭 |
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| 作者单位： | 1. 河北农业大学国土资源学院,河北保定,071001
2. 中国科学院地理科学与资源研究所,北京,100101 |
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| 基金项目： | 科技部基础性工作专项资助项目（2008FY110300）. |
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| 摘 要： | 居民点空间分布是区域自然、社会、经济以及历史发展的综合反映,影响着区域经济发展的规模、方向以及发展的可能性。区域自然环境是居民点形成和发展的基础,社会经济因素也对居民点的分布产生重要影响。基于澜沧江流域数字高程模型(DEM)提取坡度、坡向和地形起伏度,结合1∶5万地名数据库的居民点及国家1∶25万基础地理信息数据库的河流、道路信息,研究了澜沧江流域居民点的空间分布格局,并对澜沧江流域居民点分布的影响因素进行定量了分析。研究结果显示,海拔、坡度、坡向、地形起伏度对居民点的分布有显著影响,居民点倾向于分布在海拔较低、坡度和起伏度较小、东南坡向的地区,各级居民点沿河流、道路分布明显。另外,较高级别的居民点更趋向于分布在自然条件较好的区域。研究结果可为澜沧江流域综合开发和生态环境保护提供科学依据。
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| 关 键 词： | 居民点 分布格局 空间分析 澜沧江流域 |
Spatial Distribution Pattern and Influence Factors of Settlements in the Lancang River Basin |
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| Abstract: | The spatial distribution of settlements is the comprehensive reflection of regional natural,social,economic conditions and the historical development.This kind of distribution influences the scale,directions and the possibility of regional economic development.Regional natural environment is the foundation for the formation and development of settlements;meanwhile,social and economic factors also have important impacts on the settlement's distribution.Based on the Digital Elevation Model of the Lancang(Mekong) River Basin,the corresponding gradient,slope aspect,and the Relief Degree of Land Surface(RDLS) were extracted respectively.These new dataset,together with the 1∶50 000 topographic database,the river and road information from the 1∶250 000 National Basic Geographic Database,were used to analyze quantitatively the factors which influenced the spatial distribution of settlements in the Lancang River Basin.The results reveal that altitude,gradient and RDLS have great impact on the distribution of settlements,and the state that all levels of settlements locate along rivers and roads is obvious.In addition,higher level settlement tends to locate in the areas with favorable natural condition.The above conclusions may contribute to the ecological environment protection,integrated river basin development and other further researches. |
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| Keywords: | settlement distribution pattern spatial analysis Lancang(Mekong) River Basin |
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