Increased light-use efficiency in northern terrestrial ecosystems   indicated by CO2 and greening observations

doi:10.1002/2016GL070710

CORC > 北京大学 > 城市与环境学院

	Increased light-use efficiency in northern terrestrial ecosystems indicated by CO2 and greening observations
	Thomas, Rebecca T. ; Prentice, Lain Colin ; Graven, Heather ; Ciais, Philippe ; Fisher, Joshua B. ; Hayes, Daniel J. ; Huang, Maoyi ; Huntzinger, Deborah N. ; Ito, Akihiko ; Jain, Atul ; Mao, Jiafu ; Michalak, Anna M. ; Peng, Shushi ; Poulter, Benjamin ; Ricciuto, Daniel M. ; Shi, Xiaoying ; Schwalm, Christopher ; Tian, Hanqin ; Zeng, Ning
刊名	GEOPHYSICAL RESEARCH LETTERS
	2016
关键词	ATMOSPHERIC CARBON-DIOXIDE MODEL INTERCOMPARISON PROJECT PROGRAM MULTISCALE SYNTHESIS SEASONAL AMPLITUDE BIOSPHERE MODELS ELEVATED CO2 LAND-USE VEGETATION TRENDS CLIMATE
DOI	10.1002/2016GL070710
英文摘要	Observations show an increasing amplitude in the seasonal cycle of CO2 (ASC) north of 45 degrees N of 56 +/- 9.8% over the last 50 years and an increase in vegetation greenness of 7.5-15% in high northern latitudes since the 1980s. However, the causes of these changes remain uncertain. Historical simulations from terrestrial biosphere models in the Multiscale Synthesis and Terrestrial Model Intercomparison Project are compared to the ASC and greenness observations, using the TM3 atmospheric transport model to translate surface fluxes into CO2 concentrations. We find that the modeled change in ASC is too small but the mean greening trend is generally captured. Modeled increases in greenness are primarily driven by warming, whereas ASC changes are primarily driven by increasing CO2. We suggest that increases in ecosystem-scale light use efficiency (LUE) have contributed to the observed ASC increase but are underestimated by current models. We highlight potential mechanisms that could increase modeled LUE.; Grantham Institute: Climate Change and the Environment-Science and Solutions for a Changing Planet DTP [NE/L002515/1]; NASA ROSES [NNX10AG01A, NNH10AN681]; DOE [DE-AC05-00OR22725]; U.S. Department of Energy (DOE), Office of Science, Biological and Environmental Research; U.S. DOE [DE-AC06-76RLO1830]; GhG Europe FP7 grant; National Aeronautics and Space Administration; KAKENHI by the Japan Society of Promotion of Science [26281014]; SCI(E); ARTICLE; r.thomas14@imperial.ac.uk; 21; 11339-11349; 43
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/458534]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Thomas, Rebecca T.,Prentice, Lain Colin,Graven, Heather,et al. Increased light-use efficiency in northern terrestrial ecosystems indicated by CO2 and greening observations[J]. GEOPHYSICAL RESEARCH LETTERS,2016.
APA	Thomas, Rebecca T..,Prentice, Lain Colin.,Graven, Heather.,Ciais, Philippe.,Fisher, Joshua B..,...&Zeng, Ning.(2016).Increased light-use efficiency in northern terrestrial ecosystems indicated by CO2 and greening observations.GEOPHYSICAL RESEARCH LETTERS.
MLA	Thomas, Rebecca T.,et al."Increased light-use efficiency in northern terrestrial ecosystems indicated by CO2 and greening observations".GEOPHYSICAL RESEARCH LETTERS (2016).