IGSNRR OpenIR
Net exchanges of CO2, CH4, and N2O between China's terrestrial ecosystems and the atmosphere and their contributions to global climate warming
Tian, Hanqin1,2; Xu, Xiaofeng1,2; Lu, Chaoqun1,2; Liu, Mingliang1,2; Ren, Wei1,2; Chen, Guangsheng1,2; Melillo, Jerry3; Liu, Jiyuan4
2011-05-13
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
Volume116
AbstractChina's terrestrial ecosystems have been recognized as an atmospheric CO2 sink; however, it is uncertain whether this sink can alleviate global warming given the fluxes of CH4 and N2O. In this study, we used a process-based ecosystem model driven by multiple environmental factors to examine the net warming potential resulting from net exchanges of CO2, CH4, and N2O between China's terrestrial ecosystems and the atmosphere during 1961-2005. In the past 45 years, China's terrestrial ecosystems were found to sequestrate CO2 at a rate of 179.3 Tg C yr(-1) with a 95% confidence range of (62.0 Tg C yr(-1), 264.9 Tg C yr(-1)) while emitting CH4 and N2O at rates of 8.3 Tg C yr(-1) with a 95% confidence range of (3.3 Tg C yr(-1), 12.4 Tg C yr(-1)) and 0.6 Tg N yr(-1) with a 95% confidence range of (0.2 Tg N yr(-1), 1.1 Tg N yr(-1)), respectively. When translated into global warming potential, it is highly possible that China's terrestrial ecosystems mitigated global climate warming at a rate of 96.9 Tg CO(2)eq yr(-1) (1 Tg = 10(12) g), substantially varying from a source of 766.8 Tg CO(2)eq yr(-1) in 1997 to a sink of 705.2 Tg CO(2)eq yr(-1) in 2002. The southeast and northeast of China slightly contributed to global climate warming; while the northwest, north, and southwest of China imposed cooling effects on the climate system. Paddy land, followed by natural wetland and dry cropland, was the largest contributor to national warming potential; forest, followed by woodland and grassland, played the most significant role in alleviating climate warming. Our simulated results indicate that CH4 and N2O emissions offset approximately 84.8% of terrestrial CO2 sink in China during 1961-2005. This study suggests that the relieving effects of China's terrestrial ecosystems on climate warming through sequestering CO2 might be gradually offset by increasing N2O emission, in combination with CH4 emission.
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Geology
WOS KeywordNITROUS-OXIDE EMISSIONS ; METHANE EMISSION ; TEMPORAL PATTERNS ; CARBON-DIOXIDE ; MAINLAND CHINA ; NATURAL WETLANDS ; NORTH-AMERICA ; CROP RESIDUE ; RICE PADDIES ; LAND-USE
Indexed BySCI
Language英语
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary
WOS IDWOS:000290621500001
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:100[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68060
Collection中国科学院地理科学与资源研究所
Corresponding AuthorTian, Hanqin
Affiliation1.Auburn Univ, Sch Forestry & Wildlife Sci, Ecosyst Dynam & Global Ecol Lab, Auburn, AL 36849 USA
2.Auburn Univ, Int Ctr Climate & Global Change Res, Auburn, AL 36849 USA
3.Marine Biol Lab, Ctr Ecosyst, Woods Hole, MA 02543 USA
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Tian, Hanqin,Xu, Xiaofeng,Lu, Chaoqun,et al. Net exchanges of CO2, CH4, and N2O between China's terrestrial ecosystems and the atmosphere and their contributions to global climate warming[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2011,116.
APA Tian, Hanqin.,Xu, Xiaofeng.,Lu, Chaoqun.,Liu, Mingliang.,Ren, Wei.,...&Liu, Jiyuan.(2011).Net exchanges of CO2, CH4, and N2O between China's terrestrial ecosystems and the atmosphere and their contributions to global climate warming.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,116.
MLA Tian, Hanqin,et al."Net exchanges of CO2, CH4, and N2O between China's terrestrial ecosystems and the atmosphere and their contributions to global climate warming".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 116(2011).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tian, Hanqin]'s Articles
[Xu, Xiaofeng]'s Articles
[Lu, Chaoqun]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tian, Hanqin]'s Articles
[Xu, Xiaofeng]'s Articles
[Lu, Chaoqun]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tian, Hanqin]'s Articles
[Xu, Xiaofeng]'s Articles
[Lu, Chaoqun]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.