气候变化领域集成服务门户(CCPortal): Critical Zone Storage Controls on the Water Ages of Ecohydrological Outputs

CCPortal

DOI	10.1029/2020GL088897
	Critical Zone Storage Controls on the Water Ages of Ecohydrological Outputs
	Kuppel S.; Tetzlaff D.; Maneta M.P.; Soulsby C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	Spatially explicit knowledge of the origins of water resources for ecosystems and rivers is challenging when using tracer data alone. We use simulations from a spatially distributed model calibrated by extensive ecohydrological data sets in a small, energy-limited catchment, where hillslope-riparian dynamics are broadly representative of humid boreal headwater catchments that are experiencing rapid environmental transition. We hypothesize that in addition to wetness status, landscape heterogeneity modulates the water pathways that sustain ecosystem function and streamflows. Simulations show that catchment storage inversely controls stream water ages year-round, but only during the drier seasons for transpiration and soil evaporation. The ages of these evaporative outputs depend much less on wetness status in the oft-saturated riparian soils than on the freely draining hillslopes that subsidize them. This work highlights the need to consider local dynamics and time-changing lateral heterogeneities when interpreting the ages, and thus the vulnerability, of water resources feeding streams and ecosystems in landscapes. ©2020. The Authors.
英文关键词	Catchments; Digital storage; Ecosystems; Runoff; Surface water resources; Transpiration; Ecosystem functions; Headwater catchment; Landscape heterogeneities; Lateral heterogeneity; Soil evaporations; Spatially distributed modeling; Spatially explicit; Storage control; Rivers; catchment; critical flow; ecohydrology; ecosystem function; evaporation; headwater; heterogeneity; spatial distribution; streamflow; tracer; transpiration; water resource
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169903
作者单位	Institut de Physique du Globe de Paris, CNRS - University of Paris, Paris, France; INRAE, RiverLy, Villeurbanne, France; Northern Rivers Institute, University of Aberdeen, Aberdeen, United Kingdom; Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany; Department of Geography, Humboldt University Berlin, Berlin, Germany; Geosciences Department, University of Montana, Missoula, MT, United States
推荐引用方式 GB/T 7714	Kuppel S.,Tetzlaff D.,Maneta M.P.,et al. Critical Zone Storage Controls on the Water Ages of Ecohydrological Outputs[J],2020,47(16).
APA	Kuppel S.,Tetzlaff D.,Maneta M.P.,&Soulsby C..(2020).Critical Zone Storage Controls on the Water Ages of Ecohydrological Outputs.Geophysical Research Letters,47(16).
MLA	Kuppel S.,et al."Critical Zone Storage Controls on the Water Ages of Ecohydrological Outputs".Geophysical Research Letters 47.16(2020).