globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.14363
Scopus记录号: 2-s2.0-85052697060
论文题名:
Evapotranspiration and water yield of a pine-broadleaf forest are not altered by long-term atmospheric [CO2] enrichment under native or enhanced soil fertility
作者: Ward E.J.; Oren R.; Seok Kim H.; Kim D.; Tor-ngern P.; Ewers B.E.; McCarthy H.R.; Oishi A.C.; Pataki D.E.; Palmroth S.; Phillips N.G.; Schäfer K.V.R.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期:10
起始页码: 4841
结束页码: 4856
语种: 英语
Scopus关键词: Coniferophyta ; Pinus taeda
英文摘要: Changes in evapotranspiration (ET) from terrestrial ecosystems affect their water yield (WY), with considerable ecological and economic consequences. Increases in surface runoff observed over the past century have been attributed to increasing atmospheric CO2 concentrations resulting in reduced ET by terrestrial ecosystems. Here, we evaluate the water balance of a Pinus taeda (L.) forest with a broadleaf component that was exposed to atmospheric [CO2] enrichment (ECO2; +200 ppm) for over 17 years and fertilization for 6 years, monitored with hundreds of environmental and sap flux sensors on a half-hourly basis. These measurements were synthesized using a one-dimensional Richard's equation model to evaluate treatment differences in transpiration (T), evaporation (E), ET, and WY. We found that ECO2 did not create significant differences in stand T, ET, or WY under either native or enhanced soil fertility, despite a 20% and 13% increase in leaf area index, respectively. While T, ET, and WY responded to fertilization, this response was weak (<3% of mean annual precipitation). Likewise, while E responded to ECO2 in the first 7 years of the study, this effect was of negligible magnitude (<1% mean annual precipitation). Given the global range of conifers similar to P. taeda, our results imply that recent observations of increased global streamflow cannot be attributed to decreases in ET across all ecosystems, demonstrating a great need for model–data synthesis activities to incorporate our current understanding of terrestrial vegetation in global water cycle models. © 2018 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110226
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Division of Environmental Science and Policy, Nicholas School of the Environment, Duke University, Durham, NC, United States; Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, United States; Department of Forest Sciences, University of Helsinki, Helsinki, Finland; Department of Civil and Environmental Engineering, Pratt School of Engineering, Duke University, Durham, NC, United States; Department of Forest Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea; Institute of Future Environmental and Forest Resources, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, South Korea; National Center for Agro-Meteorology, Seoul, South Korea; Interdisciplinary Program in Agriculture and Forest Meteorology, Seoul National University, Seoul, South Korea; Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, United States; Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand; Department of Botany and Program in Ecology, University of Wyoming, Laramie, WY, United States; Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, United States; USDA Forest Service, Southern Research Station, Coweeta Hydrologic Laboratory, Otto, NC, United States; Department of Biology, University of Utah, Salt Lake City, UT, United States; Department of Earth and Environment, Boston University, Boston, MA, United States; Department of Biological Sciences, Rutgers University, Newark, United States

Recommended Citation:
Ward E.J.,Oren R.,Seok Kim H.,et al. Evapotranspiration and water yield of a pine-broadleaf forest are not altered by long-term atmospheric [CO2] enrichment under native or enhanced soil fertility[J]. Global Change Biology,2018-01-01,24(10)
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