IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Effects of permafrost thawing on vegetation and soil carbon pool losses on the Qinghai-Tibet Plateau, China
Wang Genxu1,2; Li Yuanshou3; Wang Yibo2; Wu Qingbo3
Corresponding AuthorWang Genxu
2008
Source PublicationGEODERMA
ISSN0016-7061
EISSN1872-6259
Volume143Issue:1-2Pages:143-152
SubtypeArticle
AbstractBearing a total organic carbon (TOC) content of 9.3-10.7 kg c/m(2), alpine grassland soils of the Qinghai-Tibet plateau's permafrost region bear a greater organic carbon pool than do grassland soils in other regions of China or than tropical savannah soils. The easily released light fraction organic carbon (LFOC) accounts for 34-54% of the TOC and is particularly enriched in the topsoil (0-0.10 in). The LFOC in the organic carbon pool of alpine cold meadow and alpine cold steppe soils decreased at exponential and quadratic rates, respectively, as the vegetative cover decreased. When the vegetative cover of alpine cold meadows decreased from > 80 dm(2)/m(2) to 60 dm(2)/m(2), the topsoil TOC and LFOC dropped by 20.4% and 38.4%, respectively. Similarly, when the vegetative cover of alpine cold meadow decreased from 50 dm(2)/m(2) to 30 dm(2)/m(2) and < 15 dm(2)/m(2), the topsoil LFOC content dropped by 60% and 86.7%, respectively. Under climatic warming, the degradation of permafrost and vegetation have resulted in serious soil organic carbon (SOC) loss from the carbon pool. Land cover changes that occurred between 1986 and 2000 are estimated to have resulted in a 1.8 Gg C (120 Mg C/yr) loss in SOC, and a concomitant 65% decrease in the LFOC, in the 0-0.30 in soil layer in the Qinghai-Tibet plateau's permafrost regions. Since the region's ecosystems are quite sensitive to global climate changes, if global warming persists, alpine cold grassland ecosystems are expected to further degrade. Hence, the influence of global climatic change on soil carbon emissions from alpine grasslands should receive more attention. (C) 2007 Elsevier B.V. All rights reserved.
KeywordSoil Organic Carbon Pool Permafrost Degradation Alpine Vegetative Cover Qinghai-tibet Plateau
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.geoderma.2007.10.023
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordSTORAGE ; DYNAMICS ; CLIMATE ; YELLOW ; FLUXES ; REGION ; FOREST ; ALASKA ; CYCLE
Language英语
Quartile2区
TOP
WOS SubjectSoil Science
WOS IDWOS:000252586200014
Citation statistics
Cited Times:117[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10535
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Lanzhou Univ, Coll Resources & Environm, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Wang Genxu,Li Yuanshou,Wang Yibo,et al. Effects of permafrost thawing on vegetation and soil carbon pool losses on the Qinghai-Tibet Plateau, China[J]. GEODERMA,2008,143(1-2):143-152.
APA Wang Genxu,Li Yuanshou,Wang Yibo,&Wu Qingbo.(2008).Effects of permafrost thawing on vegetation and soil carbon pool losses on the Qinghai-Tibet Plateau, China.GEODERMA,143(1-2),143-152.
MLA Wang Genxu,et al."Effects of permafrost thawing on vegetation and soil carbon pool losses on the Qinghai-Tibet Plateau, China".GEODERMA 143.1-2(2008):143-152.
Files in This Item:
File Name/Size DocType Version Access License
Effects of permafros(604KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang Genxu]'s Articles
[Li Yuanshou]'s Articles
[Wang Yibo]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang Genxu]'s Articles
[Li Yuanshou]'s Articles
[Wang Yibo]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang Genxu]'s Articles
[Li Yuanshou]'s Articles
[Wang Yibo]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Effects of permafrost thawing on vegetation and soil carbon pool losses on the Qinghai-Tibet Plateau, China.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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