Controls on geomorphic characteristics of the Xiaohei River basin in the upper Lancang-Mekong, China

doi:10.1007/s11629-020-5977-7

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2020 > Vol17 No.5

	Controls on geomorphic characteristics of the Xiaohei River basin in the upper Lancang-Mekong, China
	Gu, Zhen-kui; Fan, Hui; Lou, Jun-peng; Yang, Kun
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2020
卷号	17 期号:5 页码:1045-1057
关键词	Longitudinal profile Steepness Divide migration Stream power Hydropower development Lancang
ISSN号	1672-6316
DOI	10.1007/s11629-020-5977-7
文献子类	Article
英文摘要	Understanding the evolution of the fluvial geomorphology in an orogenic belt provides valuable insight into the relationship between upper crustal deformation and surface processes. The upper Lancang-Mekong River is in an area experiencing both uplift and erosion. The related processes provide a steady sediment supply to the lower reaches of the river and play an important role in the regional environmental changes. The Xiaohei (Weiyuan) River Basin is an important sub-basin in this area, which is characterized by large-scale topographic fluctuations, active tectonics and erosion, and anthropogenic activities. These different factors introduce numerous complexities to the local surface processes. In this study, we investigate and quantify the controls of geomorphic evolution of the Xiaohei River Basin. We located and mapped the main knick-zones within the channels and examined the main genetic factors, such as faults and stratigraphic differences. The results show that the areas with the lowest uplift rates are characterized by a low steepness index and are located in the southeastern part of the basin. The stream power of the mainstream increases downstream, with an average value of ~122 W/m. The erosional activity of the various stream channels is intense. Overall, the basin tends to expansion, with only local instances of inward contraction. Our analysis confirms that a number of the geomorphic evolutionary characteristics of the Xiaohei River Basin are transient. In addition, the future potential for the increasing the number of dams and the hydropower development in the basin may weaken the expansion trend of the basin over a long period of time.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000534803600002
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46814]
专题	Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.5
推荐引用方式 GB/T 7714	Gu, Zhen-kui,Fan, Hui,Lou, Jun-peng,et al. Controls on geomorphic characteristics of the Xiaohei River basin in the upper Lancang-Mekong, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(5):1045-1057.
APA	Gu, Zhen-kui,Fan, Hui,Lou, Jun-peng,&Yang, Kun.(2020).Controls on geomorphic characteristics of the Xiaohei River basin in the upper Lancang-Mekong, China.JOURNAL OF MOUNTAIN SCIENCE,17(5),1045-1057.
MLA	Gu, Zhen-kui,et al."Controls on geomorphic characteristics of the Xiaohei River basin in the upper Lancang-Mekong, China".JOURNAL OF MOUNTAIN SCIENCE 17.5(2020):1045-1057.