globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-015-2830-8
Scopus记录号: 2-s2.0-84940880130
论文题名:
A model based investigation of the relative importance of CO2-fertilization, climate warming, nitrogen deposition and land use change on the global terrestrial carbon uptake in the historical period
作者: Devaraju N.; Bala G.; Caldeira K.; Nemani R.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 47, 期:2017-01-02
起始页码: 173
结束页码: 190
语种: 英语
英文关键词: Climate change ; CO2 fertilization ; Land use land cover change ; Net primary productivity ; Nitrogen deposition ; Terrestrial carbon uptake
英文摘要: In this paper, using the fully coupled NCAR Community Earth System Model (CESM1.0.4), we investigate the relative importance of CO2-fertilization, climate warming, anthropogenic nitrogen deposition, and land use and land cover change (LULCC) for terrestrial carbon uptake during the historical period (1850–2005). In our simulations, between the beginning and end of this period, we find an increase in global net primary productivity (NPP) on land of about 4 PgCyr−1 (8.2 %) with a contribution of 2.3 PgCyr−1 from CO2-fertilization and 2.0 PgCyr−1 from nitrogen deposition. Climate warming also causes NPP to increase by 0.35 PgCyr−1 but LULCC causes a decline of 0.7 PgCyr−1. These results indicate that the recent increase in vegetation productivity is most likely driven by CO2 fertilization and nitrogen deposition. Further, we find that this configuration of CESM projects that the global terrestrial ecosystem has been a net source of carbon during 1850–2005 (release of 45.1 ± 2.4 PgC), largely driven by historical LULCC related CO2 fluxes to the atmosphere. During the recent three decades (early 1970s to early 2000s), however, our model simulations project that the terrestrial ecosystem acts as a sink, taking up about 10 PgC mainly due to CO2 fertilization and nitrogen deposition. Our results are in good qualitative agreement with recent studies that indicate an increase in vegetation production and water use efficiency in the satellite era and that the terrestrial ecosystem has been a net sink for carbon in recent decades. © 2015, Springer-Verlag Berlin Heidelberg.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53642
Appears in Collections:过去全球变化的重建

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作者单位: Divecha Centre for Climate Change, Indian Institute of Science, Bangalore, India; Centre for Atmospheric and Oceanic Sciences, Indian Institute of Science, Bangalore, India; Interdisciplinary Centre for Water Research, Indian Institute of Science, Bangalore, India; Department of Global Ecology, Carnegie Institution, 260 Panama Street, Stanford, CA, United States; NASA Ames Research Center, Moffett Field, CA, United States

Recommended Citation:
Devaraju N.,Bala G.,Caldeira K.,et al. A model based investigation of the relative importance of CO2-fertilization, climate warming, nitrogen deposition and land use change on the global terrestrial carbon uptake in the historical period[J]. Climate Dynamics,2016-01-01,47(2017-01-02)
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