IEECAS OpenIR  > 生态环境研究室
Re-evaluation of organic carbon pool from land surface down to bedrock on China's Loess Plateau
Jia, Xiaoxu1,2; Wu, Haiming3; Shao, Ming'an1,2,3; Huang, Laiming2; Wei, Xiaorong1,3; Wang, Yunqiang4; Zhu, Yuanjun1,3
Corresponding AuthorZhu, Yuanjun(zhuyuanjun@foxmail.com)
2020-05-01
Source PublicationAGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN0167-8809
Volume293Pages:8
AbstractLarge reservoirs of organic carbon (OC) store in deep soils ( > 1 m below land surface) are not usually included in regional and global terrestrial C inventories. Chinaos Loess Plateau (CLP), which has the worldos deepest loess deposit and has experienced long-term, intensive agricultural and revegetation activities, could contain large stores of OC. In this study, the distribution of OC concentration and stock across the entire loess profile from the ground surface down to the bedrock (56-205 m) was assessed at five sites (Yangling, YL; Changwu, CW; Fuxian, FX; Anosai, AS; and Shenmu, SM) under three land use types (farmland, grassland and shrubland). There was pronounced decrease in mean OC concentration with increasing depth along loess profiles at all the investigated sites. OC concentration in the topmost 20 m of the loess was much higher and fluctuated more significantly than that in the deeper layers at YL, CW, FX and AS, where mean annual precipitation was > 550 mm. In contrast, OC concentration was low and stable at SM with mean annual precipitation < 450 mm. The restoration of vegetation with deep roots following the abandonment of farmlands resulted in deep OC accumulation at YL and AS, whereas natural grassland recovery did not result in the accumulation of OC at SM. Our results suggested that land use change could alter OC distribution in deep soils, of which degree depended on climatic condition and vegetation type. The estimated OC storage varied significantly across the sites (859-5044 Mg ha(-1)), which mainly depended on the thickness of loess deposit. OC store on the CLP and other areas around the world with deep soils or sediments could be underestimated and need re-consideration in future C budget studies. This is the first estimate of regional OC stock across loess profile, spanning from the land surface down to the bedrock. The findings could have significant implications for biogeochemical cycling of C in surface and deep soil layers down to the bedrock.
KeywordCarbon pool Carbon sequestration Vertical distribution Deep loess deposit Earth's critical zone
DOI10.1016/j.agee.2020.106842
WOS KeywordDEEP SOIL CARBON ; VERTICAL-DISTRIBUTION ; ACCUMULATION ; DYNAMICS ; NITROGEN ; CLIMATE ; MATTER ; STOCKS ; AFFORESTATION ; MANAGEMENT
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Key Project for Research and Development[2016YFC0501605] ; National Natural Science Foundation of China[41571130081] ; National Natural Science Foundation of China[51508466] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017076] ; Open Research Fund of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021402-1806]
WOS Research AreaAgriculture ; Environmental Sciences & Ecology
Funding OrganizationNational Key Project for Research and Development ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Open Research Fund of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau
WOS SubjectAgriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS IDWOS:000527589100009
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/14734
Collection生态环境研究室
Corresponding AuthorZhu, Yuanjun
Affiliation1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Jia, Xiaoxu,Wu, Haiming,Shao, Ming'an,et al. Re-evaluation of organic carbon pool from land surface down to bedrock on China's Loess Plateau[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2020,293:8.
APA Jia, Xiaoxu.,Wu, Haiming.,Shao, Ming'an.,Huang, Laiming.,Wei, Xiaorong.,...&Zhu, Yuanjun.(2020).Re-evaluation of organic carbon pool from land surface down to bedrock on China's Loess Plateau.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,293,8.
MLA Jia, Xiaoxu,et al."Re-evaluation of organic carbon pool from land surface down to bedrock on China's Loess Plateau".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 293(2020):8.
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
[Jia, Xiaoxu]'s Articles
[Wu, Haiming]'s Articles
[Shao, Ming'an]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jia, Xiaoxu]'s Articles
[Wu, Haiming]'s Articles
[Shao, Ming'an]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jia, Xiaoxu]'s Articles
[Wu, Haiming]'s Articles
[Shao, Ming'an]'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.