气候变化领域集成服务门户(CCPortal): Potential roles of CO 2 fertilization; nitrogen deposition; climate change; and land use and land cover change on the global terrestrial carbon uptake in the twenty-first century

CCPortal

DOI	10.1007/s00382-018-4388-8
	Potential roles of CO 2 fertilization; nitrogen deposition; climate change; and land use and land cover change on the global terrestrial carbon uptake in the twenty-first century
	Tharammal T.; Bala G.; Narayanappa D.; Nemani R.
发表日期	2019
ISSN	0930-7575
起始页码	4393
结束页码	4406
卷号	52 期号:2020-07-08
英文摘要	Anthropogenic influences and global climate change are expected to alter the land carbon stocks in the future. In this modeling study, using the NCAR Community Earth System Model (CESM), we assess the relative importance of CO 2 fertilization, nitrogen deposition, climate change, and land use and land cover changes (LULCC) on the land carbon uptake in three future scenarios used in phase 5 of the Coupled Model Intercomparison Project (CMIP5). Our simulations show that CO 2 fertilization is the primary driver of the increase in net primary production (NPP) and total ecosystem carbon (TEC) in the representative concentrations pathway 2.6 (RCP2.6), RCP4.5, and RCP8.5 scenarios. The effect of nitrogen deposition on NPP and TEC in the future scenarios is small. Climate warming causes increases in NPP in the RCP4.5 and RCP8.5 scenarios, but it leads to loss of TEC in the future scenarios because of increased heterotrophic respiration. LULCC leads to an enhancement of NPP in the future scenarios due to post-harvest regrowth in the RCP2.6 and RCP8.5 scenarios, and due to afforestation in the RCP4.5 scenario. We find that land is a source of carbon in the RC8.5 and RCP2.6 scenarios mainly because of LULCC and climate change, but afforestation and CO 2 fertilization in the RCP4.5 scenario facilitate the land to be a sink. Our findings, albeit from a single model, are in broader agreement with other studies that highlight the need for better land management practices and moderation in climate change for a continued land carbon sink. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
语种	英语
scopus关键词	atmospheric deposition; carbon dioxide; carbon sink; climate change; CMIP; land cover; land use change; nitrogen; twenty first century
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146396
作者单位	Divecha Center for Climate Change, Indian Institute of Science, Bangalore, India; Center for Atmospheric and Oceanic Sciences, Indian Institute of Science, Bangalore, India; Laboratoire des Sciences du Climat et de l’Environnement LSCE/IPSL, Unité mixte CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, 91191, France; NASA Ames Research Center, Moffett Field, Mountain View, CA 94035, United States
推荐引用方式 GB/T 7714	Tharammal T.,Bala G.,Narayanappa D.,et al. Potential roles of CO 2 fertilization; nitrogen deposition; climate change; and land use and land cover change on the global terrestrial carbon uptake in the twenty-first century[J],2019,52(2020-07-08).
APA	Tharammal T.,Bala G.,Narayanappa D.,&Nemani R..(2019).Potential roles of CO 2 fertilization; nitrogen deposition; climate change; and land use and land cover change on the global terrestrial carbon uptake in the twenty-first century.Climate Dynamics,52(2020-07-08).
MLA	Tharammal T.,et al."Potential roles of CO 2 fertilization; nitrogen deposition; climate change; and land use and land cover change on the global terrestrial carbon uptake in the twenty-first century".Climate Dynamics 52.2020-07-08(2019).