Dynamical characteristics of geomorphologic evolution of the basins covered by Pisha-sandstone in the eastern wing of the Ordos Plateau, China

doi:10.1007/s11629-018-4859-8

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-2018 > Vol15 No.5

	Dynamical characteristics of geomorphologic evolution of the basins covered by Pisha-sandstone in the eastern wing of the Ordos Plateau, China
	Gu, ZK; Shi, CX
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2018
卷号	15 期号:5 页码:1046-1056
关键词	Dynamic characteristics Geomorphologic evolution Ordos Plateau Tectonic activity Stream power Geomorphological parameter
ISSN号	1672-6316
DOI	10.1007/s11629-018-4859-8
文献子类	Article
英文摘要	There are several basins with high sediment yield in the Pisha-sandstone covering area of the east wing of the Ordos Plateau. Due to the lack of targeted research on the dynamical characteristics of geomorphic evolution that plays an important role in the sand production, this paper analyzed the tectonic activity intensity and erosion characteristics of the area. The results show that the intensity of tectonic activities in the area is generally moderateweak and shows an unconspicuous increase from north to south. Tectonic activity is manifested mainly in the form of uplift. The uplift rate in the lower reaches of each basin is greater than the erosion rate, which is prominent in the Kuyehe and the Tuweihe rivers. During the uplift of the regional topography, the most serious parts under erosion are generally concentrated in the upstream and midstream of basins. All longitudinal profiles of the basins have a shape close to an exponential function, which indicates that they are in the early stage of erosion evolution. The mechanisms of geomorphologic evolution of these basins have a great similarity. The conservative estimate of historical average erosion rate was less than 182-520 t/(km(2).yr), much less than that of the modern times. The average stream power values are typically distributed between 4 and 102 W/m, with the larger being in the Kuyehe and the Tuweihe rivers and the smallest being in the Qinshuihe River. The maximum stream power value appears in the downstream reach, which should be the main reason for the particles being directly injected into the Yellow River. From the perspective of geomorphological evolution, the current soil and water conservation measures can hardly cure the erosion of these basins in the long run.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000431989800010
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/35525]
专题	Journal of Mountain Science_Journal of Mountain Science-2018_Vol15 No.5
推荐引用方式 GB/T 7714	Gu, ZK,Shi, CX. Dynamical characteristics of geomorphologic evolution of the basins covered by Pisha-sandstone in the eastern wing of the Ordos Plateau, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(5):1046-1056.
APA	Gu, ZK,&Shi, CX.(2018).Dynamical characteristics of geomorphologic evolution of the basins covered by Pisha-sandstone in the eastern wing of the Ordos Plateau, China.JOURNAL OF MOUNTAIN SCIENCE,15(5),1046-1056.
MLA	Gu, ZK,et al."Dynamical characteristics of geomorphologic evolution of the basins covered by Pisha-sandstone in the eastern wing of the Ordos Plateau, China".JOURNAL OF MOUNTAIN SCIENCE 15.5(2018):1046-1056.