气候变化领域集成服务门户(CCPortal): Increased control of vegetation on global terrestrial energy fluxes

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DOI	10.1038/s41558-020-0717-0
	Increased control of vegetation on global terrestrial energy fluxes
	Forzieri G.; Miralles D.G.; Ciais P.; Alkama R.; Ryu Y.; Duveiller G.; Zhang K.; Robertson E.; Kautz M.; Martens B.; Jiang C.; Arneth A.; Georgievski G.; Li W.; Ceccherini G.; Anthoni P.; Lawrence P.; Wiltshire A.; Pongratz J.; Piao S.; Sitch S.; Goll D.S.; Arora V.K.; Lienert S.; Lombardozzi D.; Kato E.; Nabel J.E.M.S.; Tian H.; Friedlingstein P.; Cescatti A.
发表日期	2020
ISSN	1758-678X
起始页码	356
结束页码	362
卷号	10 期号:4
英文摘要	Changes in vegetation structure are expected to influence the redistribution of heat and moisture; however, how variations in the leaf area index (LAI) affect this global energy partitioning is not yet quantified. Here, we estimate that a unit change in LAI leads to 3.66 ± 0.45 and −3.26 ± 0.41 W m−2 in latent (LE) and sensible (H) fluxes, respectively, over the 1982–2016 period. Analysis of an ensemble of data-driven products shows that these sensitivities increase by about 20% over the observational period, prominently in regions with a limited water supply, probably because of an increased transpiration/evaporation ratio. Global greening has caused a decrease in the Bowen ratio (B = H/LE) of −0.010 ± 0.002 per decade, which is attributable to the increased evaporative surface. Such a direct LAI effect on energy fluxes is largely modulated by plant functional types (PFTs) and background climate conditions. Land surface models (LSMs) misrepresent this vegetation control, possibly due to underestimation of the biophysical responses to changes in the water availability and poor representation of LAI dynamics. © 2020, Crown/European Union.
英文关键词	Bowen ratio; climate conditions; energy flux; global perspective; leaf area index; terrestrial ecosystem; vegetation dynamics; vegetation structure; water availability
语种	英语
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171691
作者单位	European Commission, Joint Research Centre, Ispra, Italy; Hydro-Climate Extremes Lab (H-CEL), Department of Environment, Ghent University, Ghent, Belgium; LSCE CEA CNRS UPSACLAY IPSL, Gif-sur-Yvette, France; Department of Landscape Architecture and Rural Systems Engineering, Seoul National University, Seoul, South Korea; College of Hydrology and Water Resources, Hohai University, Nanjing, China; Met Office, Exeter, United Kingdom; Forest Research Institute Baden-Württemberg, Freiburg, Germany; KIT, IMK-IFU, Garmisch-Partenkirchen, Germany; Helmholtz-Zentrum Geesthacht, Institute of Coastal Research, Geesthacht, Germany; Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany; Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, China; NCAR, Boulder, CO, United States; Ludwig-Maximilians-Universität München, Munich, Germany; Max Planck Institute for Meteorology, Hamburg, Germany; Department o...
推荐引用方式 GB/T 7714	Forzieri G.,Miralles D.G.,Ciais P.,et al. Increased control of vegetation on global terrestrial energy fluxes[J],2020,10(4).
APA	Forzieri G..,Miralles D.G..,Ciais P..,Alkama R..,Ryu Y..,...&Cescatti A..(2020).Increased control of vegetation on global terrestrial energy fluxes.Nature Climate Change,10(4).
MLA	Forzieri G.,et al."Increased control of vegetation on global terrestrial energy fluxes".Nature Climate Change 10.4(2020).