[1]吴雯雯,张文翔,明庆忠,等.基于DEM的长江第一弯地区地貌因子特征[J].山地学报,2014,(02):219.
　WU Wenwen,ZHANG Wenxiang,MING Qingzhong,et al.The Physiognomy Morphological Characters and the Origin of the Area in the First Turn of Yangtze River Based on DEM[J].Mountain Research,2014,(02):219.
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基于DEM的长江第一弯地区地貌因子特征()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2014年02期
页码:
219
栏目:
山地环境
出版日期:
2014-02-01

文章信息/Info

Title:
The Physiognomy Morphological Characters and the Origin of the Area in the First Turn of Yangtze River Based on DEM
作者:
吴雯雯;张文翔;明庆忠;史正涛;苏怀;
1. 云南省高原地理过程与环境变化重点实验室，云南 昆明 650500；
2.云南师范大学高原湖泊生态与全球变化实验室，云南 昆明 650500；
3. 云南师范大学旅游与地理科学学院，云南 昆明 650500
Author(s):
WU Wenwen;  ZHANG Wenxiang;  MING Qingzhong;  SHI Zhengtao;  SU Huai
1. Key Laboratory of the Plateau Surface Process and Environment Changes of Yunnan Province, Kunming 650500, China;
2. Key Laboratory of Plateau Lake Ecology and Global Change of Yunnan Normal University, Kunming 650500, China;
3. School of Tourism and Geographical Sciences, Yunnan Normal University, Kunming 650500, China
关键词:
数字高程模型; 地貌参数; 河流地貌; 河流成因; 长江第一弯
Keywords:
DEM;  geomorphological parameters;  fluvial landform;  the origin of river;  the first turn of Yangtze River
分类号:
P931
文献标志码:
A
摘要:
利用数字高程模型(DEM)对金沙江拖顶-三江口段的宏观地貌参数、河流地貌发育特征、地质构造背景进行系统的综合分析,发现区内地势起伏非常显著,边缘区表现出高坡度、高起伏的特征,而中部地区坡度和地形起伏度相对较缓,研究区的坡度、起伏度具有先增后减的特征;金沙江干流东侧各支流发育程度明显低于西侧;晚新生代以来构造带的快速抬升及差异下降导致了以石鼓为界的金沙江上下两段水系发育程度迥异,下段多数支流表现出纵比降偏大的低发育特征。通过对金沙江上游河段的地貌参数定量分析,为本区域的地貌历史、古环境演化提供重要的科学依据和视角。
Abstract:
By using digital elevation model (DEM) on the macro landform parameters, river geomorphology,geologic structure background of the Tuoding-Sanjiangkou section of Jinsha River.Comprehensive analysis the system, we find that there is obvious geomorphologhical differences in the local geographic area,and the edge area shows the characteristics of high grade and relief. Slope and topography of the central region is relatively slow,and the study area first increased and then decreased.The branch of the lower section has the characteristics of the larger longitudinal slope, and the development degree of the tributaries on the east side of the branch of Jingsha River is less than that of the west. The characteristics of geomorphological parameters on both sides of the branch in study area indicate the rapid uplift and subsidence movement of structural zones since late Cenozoic, and caused the difference of development degree in the two sections which is separated by Shigu area.Quantitative analysis geomorphic parameters of the upper reaches of the Jinsha River,that will provide important scientific evidence and perspectives to the geomorphic history, paleoenvironmental evolution in the study area.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2013-09-11；改回日期(Accepted) : 2014-01-03。
基金项目（Foundation item）：国家自然科学基金重点项目（U0933604）和云南省科技计划项目（2010CD049）资助。[Supported by the Key Program of National Natural Science Foundation of China (No. U0933604) and Science and technology project of Yunnan Province(No. 2010CD049).]
作者简介（Biography）：吴雯雯（1989-），女，汉族，青海人，硕士研究生，主要从事GIS与环境地质学方向的研究。 [Wu Wenwen(1989-),female,Qinghai Province, mainly engaged in GIS research and environmental geology.] Tel: 18697266717; E-mail: elipha@sina.com
更新日期/Last Update: 1900-01-01