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Elevated CO2 does not stimulate carbon sink in a semi-arid grassland
Song, J (Song, Jian)1,2; Wan, SQ (Wan, Shiqiang)1,2; Piao, SL (Piao, Shilong)3,4,5; Hui, DF (Hui, Dafeng)6; Hovenden, MJ (Hovenden, Mark J.)7; Ciais, P (Ciais, Philippe)8; Liu, YW (Liu, Yongwen)9; Liu, YZ (Liu, Yinzhan)1; Zhong, MX (Zhong, Mingxing)1; Zheng, MM (Zheng, Mengmei)1; Ma, GG (Ma, Gaigai)1; Zhou, ZX (Zhou, Zhenxing)1; Ru, JY (Ru, Jingyi)1
Source PublicationECOLOGY LETTERS
2019
Volume22Issue:3Pages:458-468
DOI10.1111/ele.13202
Abstract

Elevated CO2 is widely accepted to enhance terrestrial carbon sink, especially in arid and semi-arid regions. However, great uncertainties exist for the CO2 fertilisation effects, particularly when its interactions with other global change factors are considered. A four-factor (CO2, temperature, precipitation and nitrogen) experiment revealed that elevated CO2 did not affect either gross ecosystem productivity or ecosystem respiration, and consequently resulted in no changes of net ecosystem productivity in a semi-arid grassland despite whether temperature, precipitation and nitrogen were elevated or not. The observations could be primarily attributable to the offset of ecosystem carbon uptake by enhanced soil carbon release under CO2 enrichment. Our findings indicate that arid and semi-arid ecosystems may not be sensitive to CO2 enrichment as previously expected and highlight the urgent need to incorporate this mechanism into most IPCC carbon-cycle models for convincing projection of terrestrial carbon sink and its feedback to climate change.

Subject AreaEnvironmental Sciences & Ecology
WOS IDWOS:000457829800004
Language英语
Indexed BySCI
KeywordTemperate C3 Grasslands Water-use Efficiency Ecosystem Carbon Plant-growth Nitrogen Addition Climate-change Soil-nitrogen Mojave Desert Responses Dioxide
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology
Cooperation Status国际
ISSN1461-023X
Department高寒生态与人类适应
URL查看原文
PublisherWILEY
SubtypeArticle
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9388
Collection图书馆
Corresponding AuthorWan, SQ (Wan, Shiqiang)
Affiliation1.Henan Univ, Sch Life Sci, Int Joint Res Lab Global Change Ecol, Kaifeng 475004, Henan, Peoples R China;
2.Hebei Univ, Coll Life Sci, Baoding 071002, Hebei, Peoples R China;
3.Peking Univ, Coll Urban & Environm Sci, Sinofrench Inst Earth Syst Sci, Beijing 100871, Peoples R China;
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100085, Peoples R China;
5.Chinese Acad Sci, Ctr Excellence Tibetan Earth Sci, Beijing 100085, Peoples R China;
6.Tennessee State Univ, Dept Biol Sci, Nashville, TN 37209 USA;
7.Univ Tasmania, Sch Nat Sci, Biol Sci, Private Bag 55, Hobart, Tas 7001, Australia;
8.UVSQ, CNRS, CEA, Lab Sci Climat & Environm, Gif Sur Yvette, France;
9.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Song, J ,Wan, SQ ,Piao, SL ,et al. Elevated CO2 does not stimulate carbon sink in a semi-arid grassland[J]. ECOLOGY LETTERS,2019,22(3):458-468.
APA Song, J .,Wan, SQ .,Piao, SL .,Hui, DF .,Hovenden, MJ .,...&Ru, JY .(2019).Elevated CO2 does not stimulate carbon sink in a semi-arid grassland.ECOLOGY LETTERS,22(3),458-468.
MLA Song, J ,et al."Elevated CO2 does not stimulate carbon sink in a semi-arid grassland".ECOLOGY LETTERS 22.3(2019):458-468.
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