Vertical distribution and storage of soil organic and inorganic carbon in a typical inland river basin, Northwest China
Yang Fan1,2; Huang Laiming2,3; Yang Renmin1; Yang Fei1; Li Decheng1; Zhao Yuguo1,2; Yang Jinling1; Liu Feng1; Zhang Ganlin1,2
Source PublicationJOURNAL OF ARID LAND
Corresponding AuthorZhang Ganlin(glzhang@issas.ac.cn)
AbstractKnowledge of soil carbon (C) distribution and its relationship with the environment can improve our understanding of its biogeochemical cycling and help to establish sound regional models of C cycling. However, such knowledge is limited in environments with complex landscape configurations. In this study, we investigated the vertical distribution and storage of soil organic carbon (SOC) and soil inorganic carbon (SIC) in the 10 representative landscapes (alpine meadow, subalpine shrub and meadow, mountain grassland, mountain forest, typical steppe, desert steppe, Hexi Corridor oases cropland, Ruoshui River delta desert, Alxa Gobi desert, and sandy desert) with contrasting bioclimatic regimes in the Heihe River Basin, Northwest China. We also measured the Sr-87/Sr-86 ratio in soil carbonate to understand the sources of SIC because the ratio can be used as a proxy in calculating the contribution of pedogenic inorganic carbon (PIC) to total SIC. Our results showed that SOC contents generally decreased with increasing soil depth in all landscapes, while SIC contents exhibited more complicated variations along soil profiles in relation to pedogenic processes and parent materials at the various landscapes. There were significant differences of C stocks in the top meter among different landscapes, with SOC storage ranging from 0.82 kg C/m(2) in sandy desert to 50.48 kg C/m(2) in mountain forest and SIC storage ranging from 0.19 kg C/m(2) in alpine meadow to 21.91 kg C/m(2) in desert steppe. SIC contributed more than 75% of total C pool when SOC storage was lower than 10 kg C/m(2), and the proportion of PIC to SIC was greater than 70% as calculated from Sr isotopic ratio, suggesting the critical role of PIC in the C budget of this region. The considerable variations of SOC and SIC in different landscapes were attributed to different pedogenic environments resulted from contrasting climatic regimes, parent materials and vegetation types. This study provides an evidence for a general trade-off pattern between SOC and SIC, showing the compensatory effects of environmental conditions (especially climate) on SOC and SIC formation in these landscapes. This is largely attributed to the fact that the overall decrease in temperature and increase in precipitation from arid deserts to alpine mountains simultaneously facilitate the accumulation of SOC and depletion of SIC.
KeywordHeihe River Basin arid ecosystem soil landscape pedogenesis pedogenic carbonate SOC CaCO3
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[91325301] ; National Natural Science Foundation of China[41130530] ; National Natural Science Foundation of China[41371224] ; National Natural Science Foundation of China[41601221]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000429038200002
Citation statistics
Document Type期刊论文
Corresponding AuthorZhang Ganlin
Affiliation1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Yang Fan,Huang Laiming,Yang Renmin,et al. Vertical distribution and storage of soil organic and inorganic carbon in a typical inland river basin, Northwest China[J]. JOURNAL OF ARID LAND,2018,10(2):183-201.
APA Yang Fan.,Huang Laiming.,Yang Renmin.,Yang Fei.,Li Decheng.,...&Zhang Ganlin.(2018).Vertical distribution and storage of soil organic and inorganic carbon in a typical inland river basin, Northwest China.JOURNAL OF ARID LAND,10(2),183-201.
MLA Yang Fan,et al."Vertical distribution and storage of soil organic and inorganic carbon in a typical inland river basin, Northwest China".JOURNAL OF ARID LAND 10.2(2018):183-201.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yang Fan]'s Articles
[Huang Laiming]'s Articles
[Yang Renmin]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yang Fan]'s Articles
[Huang Laiming]'s Articles
[Yang Renmin]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yang Fan]'s Articles
[Huang Laiming]'s Articles
[Yang Renmin]'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.