气候变化领域集成服务门户(CCPortal): Understanding Catchment-Scale Forest Root Water Uptake Strategies Across the Continental United States Through Inverse Ecohydrological Modeling

CCPortal

DOI	10.1029/2019GL085937
	Understanding Catchment-Scale Forest Root Water Uptake Strategies Across the Continental United States Through Inverse Ecohydrological Modeling
	Knighton J.; Singh K.; Evaristo J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	Trees influence the partitioning of water between catchment water yield and evapotranspiration through mediation of soil water via root water uptake (RWU). Recent research has estimated the depth of RWU for a variety of tree species at plot scales with measurements of stable isotopes in water and sap flux. Though informative, there are some challenges bridging the gap between plot- and catchment-scale water fluxes. We estimated catchment-scale tree RWU behavior for 139 forested catchments across the continental United States from continuous streamflow records with inverse ecohydrological modeling. Our catchment-scale RWU estimates agreed well with existing plot-scale research. Monoculture catchments dense with trees reliant on shallow soil water exhibited reduced transpiration losses compared to deep-rooted and mixed-species forests within the Budkyo framework. This research highlights the importance of representing plant characteristics that define RWU control of transpiration in land surface and earth systems models. © 2019. The Authors.
英文关键词	Catchments; Evapotranspiration; Inverse problems; Runoff; Soil moisture; Transpiration; Budyko equation; Eco-hydrological models; forests; Inverse modeling; Root-water uptake; Forestry; catchment; ecohydrology; evapotranspiration; land surface; monoculture; shallow soil; streamflow; transpiration; tree; water uptake; water yield; United States
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/170868
作者单位	The National Socio-Environmental Synthesis Center, Annapolis, MD, United States; Department of Natural Resources, Cornell University, Ithaca, NY, United States; Copernicus Institute of Sustainable Development, Utrecht University, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Knighton J.,Singh K.,Evaristo J.. Understanding Catchment-Scale Forest Root Water Uptake Strategies Across the Continental United States Through Inverse Ecohydrological Modeling[J],2020,47(1).
APA	Knighton J.,Singh K.,&Evaristo J..(2020).Understanding Catchment-Scale Forest Root Water Uptake Strategies Across the Continental United States Through Inverse Ecohydrological Modeling.Geophysical Research Letters,47(1).
MLA	Knighton J.,et al."Understanding Catchment-Scale Forest Root Water Uptake Strategies Across the Continental United States Through Inverse Ecohydrological Modeling".Geophysical Research Letters 47.1(2020).