干旱区生态环境知识资源中心(Arid): Historical changes in plant water use and need in the continental United States

Arid

DOI	10.1371/journal.pone.0256586
	Historical changes in plant water use and need in the continental United States
	Tercek, Michael T.; Thoma, David; Gross, John E.; Sherrill, Kirk; Kagone, Stefanie; Senay, Gabriel
通讯作者	Tercek, MT (corresponding author), Walking Shadow Ecol, Gardiner, MT 59030 USA.
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2021
卷号	16 期号:9
英文摘要	A robust method for characterizing the biophysical environment of terrestrial vegetation uses the relationship between Actual Evapotranspiration (AET) and Climatic Water Deficit (CWD). These variables are usually estimated from a water balance model rather than measured directly and are often more representative of ecologically-significant changes than temperature or precipitation. We evaluate trends and spatial patterns in AET and CWD in the Continental United States (CONUS) during 1980-2019 using a gridded water balance model. The western US had linear regression slopes indicating increasing CWD and decreasing AET (drying), while the eastern US had generally opposite trends. When limits to plant performance characterized by AET and CWD are exceeded, vegetation assemblages change. Widespread increases in aridity throughout the west portends shifts in the distribution of plants limited by available moisture. A detailed look at Sequoia National Park illustrates the high degree of fine-scale spatial variability that exists across elevation and topographical gradients. Where such topographical and climatic diversity exists, appropriate use of our gridded data will require sub-setting to an appropriate area and analyzing according to categories of interest such as vegetation communities or across obvious physical gradients. Recent studies have successfully applied similar water balance models to fire risk and forest structure in both western and eastern U.S. forests, arid-land spring discharge, amphibian colonization and persistence in wetlands, whitebark pine mortality and establishment, and the distribution of arid-land grass species and landscape scale vegetation condition. Our gridded dataset is available free for public use. Our findings illustrate how a simple water balance model can identify important trends and patterns at site to regional scales. However, at finer scales, environmental heterogeneity is driving a range of responses that may not be simply characterized by a single trend.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000707050100043
WOS关键词	DRIVE DOWNHILL SHIFTS ; CLIMATE-CHANGE ; POTENTIAL EVAPOTRANSPIRATION ; PATTERNS ; RUNOFF ; MODELS ; PRECIPITATION ; TEMPERATURE ; MORTALITY ; RADIATION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364389
作者单位	[Tercek, Michael T.] Walking Shadow Ecol, Gardiner, MT 59030 USA; [Thoma, David; Sherrill, Kirk] Natl Pk Serv, Inventory & Monitoring Program, Ft Collins, CO USA; [Gross, John E.] Natl Pk Serv, Climate Change Response Program, Ft Collins, CO USA; [Kagone, Stefanie] US Geol Survey USGS, North Cent Climate Adaptat Sci Ctr, Earth Resources Observat & Sci EROS Ctr, Ft Collins, CO USA; [Senay, Gabriel] USGS EROS Ctr, ASRC Fed Data Solut, Sioux Falls, SD USA
推荐引用方式 GB/T 7714	Tercek, Michael T.,Thoma, David,Gross, John E.,et al. Historical changes in plant water use and need in the continental United States[J]. United States Geological Survey,2021,16(9).
APA	Tercek, Michael T.,Thoma, David,Gross, John E.,Sherrill, Kirk,Kagone, Stefanie,&Senay, Gabriel.(2021).Historical changes in plant water use and need in the continental United States.PLOS ONE,16(9).
MLA	Tercek, Michael T.,et al."Historical changes in plant water use and need in the continental United States".PLOS ONE 16.9(2021).