气候变化领域集成服务门户(CCPortal): Runoff and sediment yield in relation to precipitation, temperature and glaciers on the Tibetan Plateau

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DOI	10.1016/j.iswcr.2021.09.004
	Runoff and sediment yield in relation to precipitation, temperature and glaciers on the Tibetan Plateau
	Zhang, Fan; Zeng, Chen; Wang, Guanxing; Wang, Li; Shi, Xiaonan
通讯作者	Zeng, C (通讯作者)
发表日期	2022
ISSN	2095-6339
EISSN	2589-059X
起始页码	197
结束页码	207
卷号	10 期号:2
英文摘要	The riverine sediment is an essential carrier for nutrients and pollutants delivery and is considered as an important indicator of land degradation and environmental changes. With growing interest in environmental changes over the Tibetan Plateau, this study investigated mean annual runoff and sediment yield from eight headwater catchments in relation to annual precipitation, air temperature, and glacier area ratio, etc. Results show that runoff (Q) is positively correlated with both precipitation (P) and temperature (T), i.e., Q = 0.357P+20.3T-6.4, indicating combined water supply from rainfall and melt-water, increase of which may exceed the evapotranspiration water loss caused by temperature raise. Sediment yield (S) shows an inverted parabolic relationship with precipitation and at the same time positive correlation with glacier area ratio (Ag), i.e., S = 0.000609 P-2-0.470P+48.5 A(g)+202.53, indicating that sediment yield is a minimum at about 500-600 mm of precipitation, increasing sharply on both sides of this minimum in one case owing to decreased vegetation protection and in the other to enhanced erosive power and that erosion rate in the glacierized area is generally higher than non-glacierized area. The variation in sediment yield with precipitation can be explained by the operation of two factors, i.e., rainfall erosive action that increases continuously with increase in precipitation, and vegetation protective action that is unity for zero precipitation and decreases with increases in precipitation. The above results may be useful in visualizing not only variations in rates of erosion among climatic zones on the Tibetan Plateau but also the probable changes of erosion during a climatic change. (C) 2021 International Research and Training Center on Erosion and Sedimentation, China Water and Power Press, and China Institute of Water Resources and Hydropower Research. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.
关键词	SUSPENDED SEDIMENT SOIL-EROSION MELTWATER EROSION CLIMATE-CHANGE LOESS PLATEAU WATER-BALANCE YELLOW-RIVER CATCHMENT DISCHARGE EXPORT
英文关键词	Alpine catchment; Climate condition; Glacier erosion; Runoff; Sediment yield
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Agriculture ; Water Resources
WOS类目	Environmental Sciences ; Soil Science ; Water Resources
WOS记录号	WOS:000782913000004
来源期刊	INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260603
推荐引用方式 GB/T 7714	Zhang, Fan,Zeng, Chen,Wang, Guanxing,et al. Runoff and sediment yield in relation to precipitation, temperature and glaciers on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2022,10(2).
APA	Zhang, Fan,Zeng, Chen,Wang, Guanxing,Wang, Li,&Shi, Xiaonan.(2022).Runoff and sediment yield in relation to precipitation, temperature and glaciers on the Tibetan Plateau.INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH,10(2).
MLA	Zhang, Fan,et al."Runoff and sediment yield in relation to precipitation, temperature and glaciers on the Tibetan Plateau".INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH 10.2(2022).