干旱区生态环境知识资源中心(Arid): Hydro-meteorological drivers influencing suspended sediment transport and yield in a semi-arid mountainous basin

Arid

DOI	10.1002/esp.5001
	Hydro-meteorological drivers influencing suspended sediment transport and yield in a semi-arid mountainous basin
	Millares, A.; Monino, A.
通讯作者	Millares, A
来源期刊	EARTH SURFACE PROCESSES AND LANDFORMS
ISSN	0197-9337
EISSN	1096-9837
出版年	2020
卷号	45 期号:15 页码:3791-3807
英文摘要	Understanding erosion and sediment transport dynamics is key for sustainable water resources management. The objective of this research was to assess suspended sediment responses, identifying relationships with hydro-meteorological drivers, sediment sources and connectivity in a mountainous semi-arid basin. With this purpose, suspended sediment concentrations of 12 events were measured by automatic sampling and classified based on six descriptors of hydro-meteorological drivers, their related rating curves and hysteresis loop behaviour, and distribution of precipitation, snowfall and snowmelt. Comparison with sediment transport and yield along the river, previously reported, was also performed. The results allowed us to distinguish up to three types of events with different erosive responses, comparable with other Mediterranean environments and snowmelt-driven basins. Events classified as type I and II were closely linked to snow processes. Those classified as type III presented higher sediment yield and negligible influence of snow processes. The analysis of rating curves and hysteresis loops confirmed the identified transport responses. Type I and II events, with clockwise behaviour, were related to in-channel sediment storage. Type III events, with predominantly counter-clockwise behaviour, were related to hillslope erosion processes of gullying and landslides. The sediment connectivity analysed highlights the role of vegetation cover and land uses, and its sensitivity in high mountainous environments, which fits with the observed sediment transport at the study site. The volume of sediment trapped in the bottomset area of a reservoir downstream was related to type I events (more frequent and of greater magnitude). However, spatial distribution and frequency of type III events are likely to become more relevant under future climate scenarios due to their high sensitivity to hydro-meteorological drivers. These results highlight the vulnerability of high mountainous areas on erosive dynamics and justify long-term monitoring as hotspots of future challenge for water resource management. (c) 2020 John Wiley & Sons, Ltd.
英文关键词	suspended load high mountain hydro-meteorological drivers hysteresis sediment dynamics connectivity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000578294000001
WOS关键词	RATING CURVES ; LAND-USE ; HYSTERESIS PATTERNS ; ALPINE WATERSHEDS ; SOIL-EROSION ; RIVER-BASIN ; SNOWMELT ; CATCHMENT ; CLIMATE ; LOAD
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328356
作者单位	[Millares, A.; Monino, A.] Univ Granada, Andalusian Inst Earth Syst Res IISTA, Environm Fluid Dynam Grp, Avda Mediterraneo S-N, Granada 18006, Spain
推荐引用方式 GB/T 7714	Millares, A.,Monino, A.. Hydro-meteorological drivers influencing suspended sediment transport and yield in a semi-arid mountainous basin[J],2020,45(15):3791-3807.
APA	Millares, A.,&Monino, A..(2020).Hydro-meteorological drivers influencing suspended sediment transport and yield in a semi-arid mountainous basin.EARTH SURFACE PROCESSES AND LANDFORMS,45(15),3791-3807.
MLA	Millares, A.,et al."Hydro-meteorological drivers influencing suspended sediment transport and yield in a semi-arid mountainous basin".EARTH SURFACE PROCESSES AND LANDFORMS 45.15(2020):3791-3807.