气候变化领域集成服务门户(CCPortal): Have Synergies Between Nitrogen Deposition and Atmospheric CO 2 Driven the Recent Enhancement of the Terrestrial Carbon Sink?

CCPortal

DOI	10.1029/2018GB005922
	Have Synergies Between Nitrogen Deposition and Atmospheric CO 2 Driven the Recent Enhancement of the Terrestrial Carbon Sink?
	O'Sullivan M.; Spracklen D.V.; Batterman S.A.; Arnold S.R.; Gloor M.; Buermann W.
发表日期	2019
ISSN	0886-6236
EISSN	1944-9224
起始页码	163
结束页码	180
卷号	33 期号:2
英文摘要	The terrestrial carbon sink has increased since the turn of this century at a time of increased fossil fuel burning, yet the mechanisms enhancing this sink are not fully understood. Here we assess the hypothesis that regional increases in nitrogen deposition since the early 2000s has alleviated nitrogen limitation and worked in tandem with enhanced CO 2 fertilization to increase ecosystem productivity and carbon sequestration, providing a causal link between the parallel increases in emissions and the global land carbon sink. We use the Community Land Model (CLM4.5-BGC) to estimate the influence of changes in atmospheric CO 2 , nitrogen deposition, climate, and their interactions to changes in net primary production and net biome production. We focus on two periods, 1901–2016 and 1990–2016, to estimate changes in land carbon fluxes relative to historical and contemporary baselines, respectively. We find that over the historical period, nitrogen deposition (14%) and carbon-nitrogen synergy (14%) were significant contributors to the current terrestrial carbon sink, suggesting that long-term increases in nitrogen deposition led to a substantial increase in CO 2 fertilization. However, relative to the contemporary baseline, changes in nitrogen deposition and carbon-nitrogen synergy had no substantial contribution to the 21st century increase in global carbon uptake. Nonetheless, we find that increased nitrogen deposition in East Asia since the early 1990s contributed 50% to the overall increase in net biome production over this region, highlighting the importance of carbon-nitrogen interactions. Therefore, potential large-scale changes in nitrogen deposition could have a significant impact on terrestrial carbon cycling and future climate. ©2019. The Authors.
英文关键词	carbon-nitrogen interactions; CO 2 fertilization; land surface models; nitrogen deposition; terrestrial carbon sink
语种	英语
scopus关键词	atmosphere-biosphere interaction; carbon dioxide; carbon flux; carbon sequestration; carbon sink; ecosystem dynamics; fertilizer application; fossil fuel; land surface; net primary production; nitrogen; nitrogen cycle; primary production; synergism; terrestrial ecosystem; twenty first century; Far East
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129747
作者单位	Institute for Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, United Kingdom; School of Geography, University of Leeds, Leeds, United Kingdom; Institute of Geography, Augsburg University, Augsburg, Germany; Institute of the Environment and Sustainability, University of California, Los Angeles, Los Angeles, CA, United States
推荐引用方式 GB/T 7714	O'Sullivan M.,Spracklen D.V.,Batterman S.A.,et al. Have Synergies Between Nitrogen Deposition and Atmospheric CO 2 Driven the Recent Enhancement of the Terrestrial Carbon Sink?[J],2019,33(2).
APA	O'Sullivan M.,Spracklen D.V.,Batterman S.A.,Arnold S.R.,Gloor M.,&Buermann W..(2019).Have Synergies Between Nitrogen Deposition and Atmospheric CO 2 Driven the Recent Enhancement of the Terrestrial Carbon Sink?.Global Biogeochemical Cycles,33(2).
MLA	O'Sullivan M.,et al."Have Synergies Between Nitrogen Deposition and Atmospheric CO 2 Driven the Recent Enhancement of the Terrestrial Carbon Sink?".Global Biogeochemical Cycles 33.2(2019).