globalchange  > 科学计划与规划
DOI: 10.1002/2016GL070710
论文题名:
Increased light-use efficiency in northern terrestrial ecosystems indicated by CO2 and greening observations
作者: Thomas R.T.; Prentice I.C.; Graven H.; Ciais P.; Fisher J.B.; Hayes D.J.; Huang M.; Huntzinger D.N.; Ito A.; Jain A.; Mao J.; Michalak A.M.; Peng S.; Poulter B.; Ricciuto D.M.; Shi X.; Schwalm C.; Tian H.; Zeng N.
刊名: Geophysical Research Letters
ISSN: 0094-8454
EISSN: 1944-8185
出版年: 2016
卷: 43, 期:21
起始页码: 11339
结束页码: 11349
语种: 英语
英文关键词: carbon cycle ; greening ; light use efficiency ; NPP ; terrestrial biosphere model
Scopus关键词: Atmospheric movements ; Biospherics ; Carbon ; Ecology ; Ecosystems ; Efficiency ; Atmospheric transport model ; Carbon cycles ; Greening ; Historical simulation ; Light use efficiency ; Terrestrial biosphere ; Terrestrial ecosystems ; Vegetation greenness ; Carbon dioxide
英文摘要: Observations show an increasing amplitude in the seasonal cycle of CO2 (ASC) north of 45°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. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84996503301&doi=10.1002%2f2016GL070710&partnerID=40&md5=4525aa69a4c3e44bdc3dafd359ca14e7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9417
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Science and Solutions for a Changing Planet DTP, Imperial College London, London, United Kingdom

Recommended Citation:
Thomas R.T.,Prentice I.C.,Graven H.,et al. Increased light-use efficiency in northern terrestrial ecosystems indicated by CO2 and greening observations[J]. Geophysical Research Letters,2016-01-01,43(21).
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