北京大学学报（自然科学版）2017，Vol.53Issue(5)：833-842,10.DOI:10.13209/j.0479-8023.2017.041
基于数字高程模型(DEM)的可可西里 地貌及区划研究
Research on Geomorphological Morphology and Regionalization of Hoh Xil Based on Digital Elevation Model (DEM)
摘要
Abstract
The geomorphological morphology was analyzed quantificationally and the geomorphological regionalization was studied detailedly based on Digital Elevation Model (DEM) of Hoh Xil area combinated with platform of Geographic Information System (GIS). Research suggests that the Hoh Xil area composes of three types in terms of absolute altitude: the middle, the high and the highest, and the high altitude type makes up about 69.38%. Due to the formation of planation surface, the relief amplitude in this area is less than 200 m mainly included plain, tableland and hill. Rivers headward erosion caused by strong uplift of Qinghai-Tibet plateau was not exert an influence on the Hoh Xil except Sanjiangyuan region. So the primary compose of slope type are micro slope, slow slope and slope which all less than 15°. According to regional differentiation of the essential geomorphological types and their genesis, the Hoh Xil is divided into four major geomorphological regions: the Qiangtang plateau (Region Ⅰ), the east Kunlun mountains (Region Ⅱ), Sanjiangyuan hill mountains (Region Ⅲ) and Qaidam plateau and basins (Region Ⅳ). Moreover, the Region Ⅰis divided into Hoh Xil plateau lake basin (SubregionⅠ1) and Dangla high mountains (SubregionⅠ2). The Region Ⅱ is divided into southern highest mountain (Subregion Ⅱ1) and northern high mountains (Subregion Ⅱ2). The morphology research which reflect altitude, relief and slope and regionalization research which show geomorphological pattern and horizontal differentiation of plateau, mountain land, mountain plateau and basin will be of great significance in geomorphic, landform type and exploitation, protection in Hoh Xil.关键词
DEM/可可西里/地貌形态/地貌区划Key words
DEM/Hoh Xil/geomorphological morphology/geomorphological regionalization分类
天文与地球科学引用本文复制引用
许丽,李江海,刘持恒,崔鑫..基于数字高程模型(DEM)的可可西里 地貌及区划研究[J].北京大学学报（自然科学版）,2017,53(5):833-842,10.基金项目
国家重点研发计划(2016YFC0503301)和国家科技重大专项(2016ZX05033002-007)资助 （2016YFC0503301）
