摘要
本文基于ArcMap数据处理和分析平台,以90m分辨率的SRTM-4 DEM为数据源,对大湄公河次区域GMS的宏观地貌形态类型进行定性和定量分析。参考坡度分类标准和《1∶400万中国及其毗邻地区地貌图》地貌形态类型划分的海拔高度和地势起伏度标准,结合GMS东南亚5国和中国2省的特殊地貌形态,采用海拔高度和地势起伏度组合的阈值划分方法,生成包含7种地貌形态类型的分类图。结果显示:海拔1900m以下的地貌类型所占比例最大;GMS以山地地貌为主。
Based on the data processing and analysis platform of ArcMap, quantifying and quantifying the macro-scale geomorpho- logic form types were performed using SRTM-4 DEM with 90m resolution in the paper. According to the classification standard of slope levels and 1：400 000 000 Geomorphologic Map of China and Its Adjacent Regions, combining with specific geomorphologic features of five countries and two provinces of China, macro-scale geomorphologic form types including highest mountain, high mountain, high mid-mountain, low mid-mountain, low mountain, hill and plains were classified by integrating altimeter with relief amplitude. The a- nalysis result showed that those types with altitudes lower than 1 900m account for 91.67% , and GMS is dominated by mountain geo- morphologic types.
出处
《测绘科学》
CSCD
北大核心
2013年第2期50-52,46,共4页
Science of Surveying and Mapping
基金
国家自然科学基金资助项目(41071276
70873117)
中国博士后科学基金面上项目(20110490317)
关键词
大湄公河次区域
宏观地貌形态
类型划分
DEM
地势起伏度
Greater Mekong Subregion （GMS）
macro-scale morphologic form
type classification
I）EM
relief amplitude
