Net exchanges of methane and carbon dioxide on the Qinghai-Tibetan Plateau from 1979 to 2100

doi:10.1088/1748-9326/10/8/085007

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	Net exchanges of methane and carbon dioxide on the Qinghai-Tibetan Plateau from 1979 to 2100
	Jin, Zhenong 1; Zhuang, Qianlai 1,2; He, Jin-Sheng 3,4; Zhu, Xudong 1; Song, Weimin 3
	2015-08-01
发表期刊	ENVIRONMENTAL RESEARCH LETTERS
卷号	10 期号:8
文章类型	Article
摘要	Methane (CH4) is a potent greenhouse gas (GHG) that affects the global climate system. Knowledge about land-atmospheric CH4 exchanges on the Qinghai-Tibetan Plateau (QTP) is insufficient. Using a coupled biogeochemistry model, this study analyzes the net exchanges of CH4 and CO2 over the QTP for the period of 1979-2100. Our simulations show that the region currently acts as a net CH4 source with 0.95 Tg CH4 y(-1) emissions and 0.19 Tg CH(4)y(-1) soil uptake, and a photosynthesis C sink of 14.1 TgCy(-1). By accounting for the net CH4 emission and the net CO2 sequestration since 1979, the region was found to be initially a warming source until the 2010s with a positive instantaneous radiative forcing peak in the 1990s. In response to future climate change projected by multiple global climate models (GCMs) under four representative concentration pathway (RCP) scenarios, the regional source of CH4 to the atmosphere will increase by 15-77% at the end of this century. Net ecosystem production (NEP) will continually increase from the near neutral state to around 40 TgC y(-1) under all RCPs except RCP8.5. Spatially, CH4 emission or uptake will be noticeably enhanced under all RCPs over most of the QTP, while statistically significant NEP changes over a large-scale will only appear under RCP4.5 and RCP4.6 scenarios. The cumulative GHG fluxes since 1979 will exert a slight warming effect on the climate system until the 2030s, and will switch to a cooling effect thereafter. Overall, the total radiative forcing at the end of the 21st century is 0.25-0.35 W m(-2), depending on the RCP scenario. Our study highlights the importance of accounting for both CH4 and CO2 in quantifying the regional GHG budget.
关键词	Methane Carbon Dioxide Climate Change Terrestrial Ecosystem Model Tibetan Plateau
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI	10.1088/1748-9326/10/8/085007
关键词[WOS]	COMPARISON PROJECT WETCHIMP ; GLOBAL WETLAND EXTENT ; NATURAL WETLANDS ; SPATIAL VARIATIONS ; ALPINE WETLAND ; PRESENT STATE ; EMISSIONS ; CHINA ; MODEL ; CLIMATE
收录类别	SCI
语种	英语
项目资助者	NSF project(0919331) ; NASA Land Use and Land Cover Change program(NASA-NNX09AI26G) ; Department of Energy(DE-FG02-08ER64599) ; NSF Division of Information & Intelligent Systems(NSF-1028291) ; National Basic Research Program of China(2014CB954004) ; National Natural Science Foundation of China(31270481 ; 31025005)
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000366999400034
引用统计	被引频次：41[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/6515
专题	中国科学院西北高原生物研究所
作者单位	1.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA 2.Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA 3.Peking Univ, Coll Urban & Environm Sci, Dept Ecol, Beijing 100871, Peoples R China 4.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Jin, Zhenong,Zhuang, Qianlai,He, Jin-Sheng,et al. Net exchanges of methane and carbon dioxide on the Qinghai-Tibetan Plateau from 1979 to 2100[J]. ENVIRONMENTAL RESEARCH LETTERS,2015,10(8).
APA	Jin, Zhenong,Zhuang, Qianlai,He, Jin-Sheng,Zhu, Xudong,&Song, Weimin.(2015).Net exchanges of methane and carbon dioxide on the Qinghai-Tibetan Plateau from 1979 to 2100.ENVIRONMENTAL RESEARCH LETTERS,10(8).
MLA	Jin, Zhenong,et al."Net exchanges of methane and carbon dioxide on the Qinghai-Tibetan Plateau from 1979 to 2100".ENVIRONMENTAL RESEARCH LETTERS 10.8(2015).

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