globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13102
论文题名:
A dynamic leaf gas-exchange strategy is conserved in woody plants under changing ambient CO2: Evidence from carbon isotope discrimination in paleo and CO2 enrichment studies
作者: Voelker S.L.; Brooks J.R.; Meinzer F.C.; Anderson R.; Bader M.K.-F.; Battipaglia G.; Becklin K.M.; Beerling D.; Bert D.; Betancourt J.L.; Dawson T.E.; Domec J.-C.; Guyette R.P.; Körner C.; Leavitt S.W.; Linder S.; Marshall J.D.; Mildner M.; Ogée J.; Panyushkina I.; Plumpton H.J.; Pregitzer K.S.; Saurer M.; Smith A.R.; Siegwolf R.T.W.; Stambaugh M.C.; Talhelm A.F.; Tardif J.C.; Van de Water P.K.; Ward J.K.; Wingate L.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期:2
起始页码: 889
结束页码: 902
语种: 英语
英文关键词: Angiosperm ; Carbon dioxide ; Free-air CO2 enrichment ; Gymnosperm ; Optimal stomatal behavior ; Photosynthesis ; Stomatal conductance ; Water use efficiency
Scopus关键词: Gymnospermae ; Magnoliophyta ; carbon ; carbon dioxide ; angiosperm ; gymnosperm ; metabolism ; plant leaf ; plant stoma ; tree ; Angiosperms ; Carbon Dioxide ; Carbon Isotopes ; Gymnosperms ; Plant Leaves ; Plant Stomata ; Trees
英文摘要: Rising atmospheric [CO2], ca, is expected to affect stomatal regulation of leaf gas-exchange of woody plants, thus influencing energy fluxes as well as carbon (C), water, and nutrient cycling of forests. Researchers have proposed various strategies for stomatal regulation of leaf gas-exchange that include maintaining a constant leaf internal [CO2], ci, a constant drawdown in CO2 (ca - ci), and a constant ci/ca. These strategies can result in drastically different consequences for leaf gas-exchange. The accuracy of Earth systems models depends in part on assumptions about generalizable patterns in leaf gas-exchange responses to varying ca. The concept of optimal stomatal behavior, exemplified by woody plants shifting along a continuum of these strategies, provides a unifying framework for understanding leaf gas-exchange responses to ca. To assess leaf gas-exchange regulation strategies, we analyzed patterns in ci inferred from studies reporting C stable isotope ratios (δ13C) or photosynthetic discrimination in woody angiosperms and gymnosperms that grew across a range of ca spanning at least 100 ppm. Our results suggest that much of the ca-induced changes in ci/ca occurred across ca spanning 200 to 400 ppm. These patterns imply that ca - ci will eventually approach a constant level at high ca because assimilation rates will reach a maximum and stomatal conductance of each species should be constrained to some minimum level. These analyses are not consistent with canalization toward any single strategy, particularly maintaining a constant ci. Rather, the results are consistent with the existence of a broadly conserved pattern of stomatal optimization in woody angiosperms and gymnosperms. This results in trees being profligate water users at low ca, when additional water loss is small for each unit of C gain, and increasingly water-conservative at high ca, when photosystems are saturated and water loss is large for each unit C gain. © 2016 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/61494
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作者单位: Department of Forest Ecosystems and Society, Oregon State University, Corvallis, OR, United States; Western Ecology Division, National Health and Environmental Effects Research Laboratory (NHEERL), U.S. Environmental Protection Agency, 200 SW 35th Street, Corvallis, OR, United States; U.S.D.A. Forest Service, Pacific Northwest Research Station, 3200 SW Jefferson Way, Corvallis, OR, United States; Jack Baskin Engineering, University of California Santa Cruz, Santa Cruz, CA, United States; New Zealand Forest Research Institute (SCION), Te Papa Tipu Innovation Park, 20 Sala Street, Rotorua, New Zealand; Department of Environmental, Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), Second University of Naples, Caserta, Italy; Ecole Pratique des Hautes Etudes, Centre for Bio-Archaeology and Ecology, Institut de Botanique, University of Montpellier 2, Montpellier, France; Department of Ecology and Evolutionary Biology, University of Kansas, 1200 Sunnyside Avenue, Lawrence, KS, United States; Department of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom; UMR1202 BIOGECO, INRA, Cestas, France; UMR 1202 BIOGECO, University of Bordeaux, Pessac, France; National Research Program, Water Mission Area, U.S. Geological Survey, Mail Stop 430, 12201 Sunrise Valley Drive, Reston, VA, United States; Department of Integrative Biology, University of California Berkeley, 1105 Valley Life Science Bldg #3140, Berkeley, CA, United States; Bordeaux Sciences Agro, UMR ISPA 1391, INRA, Gradignan, France; Nicholas School of the Environment, Duke University, Box 90328, Durham, NC, United States; Department of Forestry, University of Missouri, 203 ABNR Building, Columbia, MO, United States; Institute of Botany, University of Basel, Schonbeinstrasse 6, Basel, Switzerland; UMR1391 ISPA, INRA, Villenave d'Ornon, France; Laboratory for Tree-Ring Research, University of Arizona, 1215 E. Lowell St., Tucson, AZ, United States; Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, PO Box 49, Alnarp, Sweden; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden; Department of Forest, Rangeland and Fire Sciences, University of Idaho, 875 Perimeter Drive, Moscow, ID, United States; Paul Scherrer Institute, Villigen, Switzerland; School of the Environment, Natural Resources and Geography, Bangor University, Gwynedd, United Kingdom; Centre for Forest Interdisciplinary Research (C-FIR), University of Winnipeg, 515 Avenue Portage, Winnipeg, MB, Canada; Department of Earth and Environmental Sciences, California State University, Fresno, 2576 E. San Ramon Ave., Mail Stop ST-24, Fresno, CA, United States

Recommended Citation:
Voelker S.L.,Brooks J.R.,Meinzer F.C.,et al. A dynamic leaf gas-exchange strategy is conserved in woody plants under changing ambient CO2: Evidence from carbon isotope discrimination in paleo and CO2 enrichment studies[J]. Global Change Biology,2016-01-01,22(2)
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