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基于地形起伏度的元谋干热河谷区地貌划分研究

作  者:
冯玉祥;邓青春;向卫;丁琳;杨海青;黎文婷
单  位:
西华师范大学国土资源学院
关键词:
地形起伏度;变点分析法;地貌形态划分;干热河谷区;元谋
摘  要:
以元谋县1∶5万等高线数据为基础,分析了该县人口密度与水土流失强度与地形起伏度、海拔高度和坡度的关系。结果表明:(1)50m DEM与1∶25万DEM最为接近,提取出的最佳统计单元为1.767 km~2,适用于该区地形起伏度研究。(2)以地形起伏度和海拔高度划分地貌形态,表明元谋县以小起伏中山和中海拔丘陵为主,中海拔丘陵是该县人口的主要聚集区。(3)以地形起伏度和坡度划分地貌形态,表明元谋县以小起伏斜坡和缓坡丘陵为主,小起伏斜坡是该县水土流失极为严重的区域。
译  名:
Landform Division in Yuanmou Dry-hot Valley Based on Relief Amplitude
作  者:
FENG Yu-xiang;DENG Qing-chun;XIANG Wei;DING Lin;YANG Hai-qing;LI Wen-ting;School of Land and Resources,China West Normal University;
关键词:
Relief amplitude;;Change point method;;Landform division;;Dry-hot Valley;;Yuanmou
摘  要:
This paper analyzed the relationship between population distribution,soil loss and topographical parameters,elevation and slope using Yuanmou's 1 ∶50000 contour data. The results showed that:( 1) 50 m resolution DEM is similar with 1∶ 250000 DEM,the best statistical unit is 1. 767 km~2.( 2) Little fluctuating mountains and Middle altitude hills are two important terrains in Yuanmou Dry-hot Valley. And Middle altitude hills is the main aggregation area of Yuanmou's population.( 3) Italic slope with little fluctuating and gentle slope hills are two important terrains in Yuanmou Dry-hot Valley. Italic slope with little fluctuating is the most serious areas of soil loss in Yuanmou country.

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