globalchange  > 气候减缓与适应
DOI: 10.1002/2017JG004173
Scopus记录号: 2-s2.0-85044290305
论文题名:
Functional Group, Biomass, and Climate Change Effects on Ecological Drought in Semiarid Grasslands
作者: Wilson S.D.; Schlaepfer D.R.; Bradford J.B.; Lauenroth W.K.; Duniway M.C.; Hall S.A.; Jamiyansharav K.; Jia G.; Lkhagva A.; Munson S.M.; Pyke D.A.; Tietjen B.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期:3
起始页码: 1072
结束页码: 1085
语种: 英语
英文关键词: biological invasion ; ecosystem function ; global change ; precipitation
Scopus关键词: annual plant ; biological invasion ; biomass ; climate change ; climate effect ; drought ; ecological modeling ; ecosystem function ; functional group ; global change ; grass ; grassland ; plant community ; precipitation (climatology) ; semiarid region ; temperate environment ; Poaceae
英文摘要: Water relations in plant communities are influenced both by contrasting functional groups (grasses and shrubs) and by climate change via complex effects on interception, uptake, and transpiration. We modeled the effects of functional group replacement and biomass increase, both of which can be outcomes of invasion and vegetation management, and climate change on ecological drought (soil water potential below which photosynthesis stops) in 340 semiarid grassland sites over 30 year periods. Relative to control vegetation (climate and site-determined mixes of functional groups), the frequency and duration of drought were increased by shrubs and decreased by annual grasses. The rankings of shrubs, control vegetation, and annual grasses in terms of drought effects were generally consistent in current and future climates, suggesting that current differences among functional groups on drought effects predict future differences. Climate change accompanied by experimentally increased biomass (i.e., the effects of invasions that increase community biomass or management that increases productivity through fertilization or respite from grazing) increased drought frequency and duration and advanced drought onset. Our results suggest that the replacement of perennial temperate semiarid grasslands by shrubs, or increased biomass, can increase ecological drought in both current and future climates. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114352
Appears in Collections:气候减缓与适应

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作者单位: Department of Biology, University of Regina, Regina, SK, Canada; Climate Impacts Research Centre, Department of Ecology and Environmental Science, Umeå University, Abisko, Sweden; Department of Botany, University of Wyoming, Laramie, WY, United States; Yale School of Forestry and Environmental Studies, New Haven, CT, United States; Southwest Biological Science Center, U.S. Geological Survey, Flagstaff, AZ, United States; Center for Sustaining Agriculture and Natural Resources, Washington State University, Wenatchee, WA, United States; SAH Ecologia LLC, Wenatchee, WA, United States; Rangeland and Watershed Stewardship Department, Colorado State University, Fort Collins, CO, United States; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Department of Biology, National University of Mongolia, Ulaanbaatar, Mongolia; Forest and Rangeland Ecosystem Science Center, U.S. Geological Survey, Corvallis, OR, United States; Institute of Biology, Biodiversity/Theoretical Ecology, Freie Universität Berlin, Berlin, Germany; Berlin-Brandenburg Institute of Advanced Biodiversity Research, Berlin, Germany

Recommended Citation:
Wilson S.D.,Schlaepfer D.R.,Bradford J.B.,et al. Functional Group, Biomass, and Climate Change Effects on Ecological Drought in Semiarid Grasslands[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(3)
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