干旱区生态环境知识资源中心(Arid): Controls on Interactions Between Surface Water, Groundwater, and Riverine Vegetation Along Intermittent Rivers and Ephemeral Streams in Arid Regions

Arid

DOI	10.1029/2020WR028429
	Controls on Interactions Between Surface Water, Groundwater, and Riverine Vegetation Along Intermittent Rivers and Ephemeral Streams in Arid Regions
	Schilling, Oliver S.; Cook, Peter G.; Grierson, Pauline F.; Dogramaci, Shawan; Simmons, Craig T.
通讯作者	Schilling, OS (corresponding author), Flinders Univ S Australia, Natl Ctr Groundwater Res & Training, Adelaide, SA, Australia. ; Schilling, OS (corresponding author), Flinders Univ S Australia, Coll Sci & Engn, Adelaide, SA, Australia. ; Schilling, OS (corresponding author), Univ Neuchatel, Ctr Hydrogeol & Geotherm, Neuchatel, Switzerland.
来源期刊	WATER RESOURCES RESEARCH
ISSN	0043-1397
EISSN	1944-7973
出版年	2021
卷号	57 期号:2
英文摘要	Intermittent rivers and ephemeral streams (IRES) make up the majority of waterways in arid and semi-arid regions. While the physical underpinnings of surface water-groundwater (SW-GW) flow systems are well understood, how ephemerality, hydraulic properties and vegetation interact along IRES is not clear, posing severe challenges to their sustainable management. This study sought to identify the controls for SW-GW-vegetation interactions along IRES. To this end, numerical experiments on a quasi-hypothetical IRES cross-section with an integrated surface-subsurface hydrological model were undertaken. The influence of different degrees of ephemerality on infiltration and riverine transpiration was tested by varying the duration of no-flow periods. The influence of hydraulic conductivity (K), moisture retention capacity, root density, and local rainfall was also explored. Experiments showed that infiltration is controlled by ephemerality and K, with infiltration decreasing rapidly with increasing ephemerality and decreasing K. Transpiration is influenced by a complex interplay between ephemerality, hydraulic properties, and vegetation. While transpiration is strongly controlled by the degree of ephemerality, the capacity of the subsurface to maintain variably saturated conditions can strongly attenuate the effects of ephemerality. A large moisture retention capacity of the subsurface can partly compensate for the reduced infiltration under increasing ephemerality. Transpiration can be as large under ephemeral as under perennial conditions, especially where water table fluctuations exhibit large amplitudes within the zone of high root density. Overall, the results provide important insights into the complex dynamics of IRES and highlight how changes in flow dynamics can have significant impacts beyond instream processes.
英文关键词	evapotranspiration hydrological processes integrated surface‐ subsurface modeling intermittent rivers and ephemeral streams recharge riparian vegetation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000624603200002
WOS关键词	RIPARIAN VEGETATION ; STABLE-ISOTOPE ; FLOW ; MODEL ; SOIL ; TRANSPIRATION ; HYDROLOGY ; NORTHWEST ; RECHARGE ; PATTERNS
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
来源机构	University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351985
作者单位	[Schilling, Oliver S.; Cook, Peter G.; Simmons, Craig T.] Flinders Univ S Australia, Natl Ctr Groundwater Res & Training, Adelaide, SA, Australia; [Schilling, Oliver S.; Cook, Peter G.; Simmons, Craig T.] Flinders Univ S Australia, Coll Sci & Engn, Adelaide, SA, Australia; [Schilling, Oliver S.] Univ Neuchatel, Ctr Hydrogeol & Geotherm, Neuchatel, Switzerland; [Grierson, Pauline F.; Dogramaci, Shawan] Univ Western Australia, West Australian Biogeochem Ctr, Sch Biol Sci, Crawley, WA, Australia; [Grierson, Pauline F.; Dogramaci, Shawan] Univ Western Australia, Ecosyst Res Grp, Crawley, WA, Australia; [Dogramaci, Shawan] Rio Tinto Iron Ore, Perth, WA, Australia
推荐引用方式 GB/T 7714	Schilling, Oliver S.,Cook, Peter G.,Grierson, Pauline F.,et al. Controls on Interactions Between Surface Water, Groundwater, and Riverine Vegetation Along Intermittent Rivers and Ephemeral Streams in Arid Regions[J]. University of Western Australia,2021,57(2).
APA	Schilling, Oliver S.,Cook, Peter G.,Grierson, Pauline F.,Dogramaci, Shawan,&Simmons, Craig T..(2021).Controls on Interactions Between Surface Water, Groundwater, and Riverine Vegetation Along Intermittent Rivers and Ephemeral Streams in Arid Regions.WATER RESOURCES RESEARCH,57(2).
MLA	Schilling, Oliver S.,et al."Controls on Interactions Between Surface Water, Groundwater, and Riverine Vegetation Along Intermittent Rivers and Ephemeral Streams in Arid Regions".WATER RESOURCES RESEARCH 57.2(2021).