globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12717
论文题名:
Spatial variability and temporal trends in water-use efficiency of European forests
作者: Saurer M.; Spahni R.; Frank D.C.; Joos F.; Leuenberger M.; Loader N.J.; Mccarroll D.; Gagen M.; Poulter B.; Siegwolf R.T.W.; Andreu-Hayles L.; Boettger T.; Dorado Liñán I.; Fairchild I.J.; Friedrich M.; Gutierrez E.; Haupt M.; Hilasvuori E.; Heinrich I.; Helle G.; Grudd H.; Jalkanen R.; Levanič T.; Linderholm H.W.; Robertson I.; Sonninen E.; Treydte K.; Waterhouse J.S.; Woodley E.J.; Wynn P.M.; Young G.H.F.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期:12
起始页码: 3700
结束页码: 3712
语种: 英语
英文关键词: Carbon isotope discrimination ; Climate change ; Dynamic vegetation model ; Tree rings
Scopus关键词: carbon ; carbon dioxide ; carbon cycle ; climate change ; Europe ; forest ; geography ; growth, development and aging ; metabolism ; physiology ; theoretical model ; time ; tree ; water cycle ; Carbon Cycle ; Carbon Dioxide ; Carbon Isotopes ; Climate Change ; Europe ; Forests ; Geography ; Models, Theoretical ; Time Factors ; Trees ; Water Cycle
英文摘要: The increasing carbon dioxide (CO2) concentration in the atmosphere in combination with climatic changes throughout the last century are likely to have had a profound effect on the physiology of trees: altering the carbon and water fluxes passing through the stomatal pores. However, the magnitude and spatial patterns of such changes in natural forests remain highly uncertain. Here, stable carbon isotope ratios from a network of 35 tree-ring sites located across Europe are investigated to determine the intrinsic water-use efficiency (iWUE), the ratio of photosynthesis to stomatal conductance from 1901 to 2000. The results were compared with simulations of a dynamic vegetation model (LPX-Bern 1.0) that integrates numerous ecosystem and land-atmosphere exchange processes in a theoretical framework. The spatial pattern of tree-ring derived iWUE of the investigated coniferous and deciduous species and the model results agreed significantly with a clear south-to-north gradient, as well as a general increase in iWUE over the 20th century. The magnitude of the iWUE increase was not spatially uniform, with the strongest increase observed and modelled for temperate forests in Central Europe, a region where summer soil-water availability decreased over the last century. We were able to demonstrate that the combined effects of increasing CO2 and climate change leading to soil drying have resulted in an accelerated increase in iWUE. These findings will help to reduce uncertainties in the land surface schemes of global climate models, where vegetation-climate feedbacks are currently still poorly constrained by observational data. © 2014 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/62073
Appears in Collections:影响、适应和脆弱性

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作者单位: Paul Scherrer Institut, Villigen, Switzerland; University of Bern, Bern, Switzerland; Swiss Federal Research Institute WSL, Birmensdorf, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland; Department of Geography, Swansea University, Swansea, United Kingdom; Laboratoire des Sciences du Climat et de L'Environment, Gif-sur Yvette, France; Tree-Ring Laboratory, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States; Department of Catchment Hydrology, Helmholtz Centre for Environmental Research-UFZ, Halle, Germany; Dept d'Ecologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain; Chair of Ecoclimatology, Technische Universität München, Freising, Germany; School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom; Institute of Botany, Hohenheim University, Stuttgart, Germany; Laboratory of Chronology, Finnish Museum of Natural History, University of Helsinki, P.O. Box 64, Helsinki, Finland; Finnish Environment Institute, P.O. Box 140, Helsinki, Finland; Climate Dynamics and Landscape Evolution, GFZ German Centre for GeoSciences, Potsdam, Germany; Bolin Centre for Climate Research, Department of Physical Geography and Quaternary Geology, Stockholm University, Stockholm, Sweden; Northern Regional Unit, Finnish Forest Research Institute, Rovaniemi, Finland; Department of Yield and Silviculture, Slovenian Forestry Institute, Večna pot 2, Ljubljana, Slovenia; University of Gothenburg, Gothenburg, Sweden; Department of Life Sciences, Anglia Ruskin University, East Road, Cambridge, United Kingdom; Department of Geography, College of Life and Environmental Sciences, University of Exeter, Rennes Drive, Exeter, United Kingdom; Lancaster Environment Centre, University of Lancaster, United Kingdom

Recommended Citation:
Saurer M.,Spahni R.,Frank D.C.,et al. Spatial variability and temporal trends in water-use efficiency of European forests[J]. Global Change Biology,2014-01-01,20(12)
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