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Effects of environmental and biotic factors on carbon isotopic fractionation during decomposition of soil organic matter
Wang, Guoan1; Jia, Yufu1; Li, Wei2
Corresponding AuthorWang, Guoan
2015-06-09
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume5Pages:DOI: 10.1038/srep11043
SubtypeArticle
AbstractDecomposition of soil organic matter (SOM) plays an important role in the global carbon cycle because the CO2 emitted from soil respiration is an important source of atmospheric CO2. Carbon isotopic fractionation occurs during SOM decomposition, which leads to C-12 to enrich in the released CO2 while C-13 to enrich in the residual SOM. Understanding the isotope fractionation has been demonstrated to be helpful for studying the global carbon cycle. Soil and litter samples were collected from soil profiles at 27 different sites located along a vertical transect from 1200 to 4500 m above sea level (a.s.l.) in the south-eastern side of the Tibetan Plateau. Their carbon isotope ratios, C and N concentrations were measured. In addition, fiber and lignin in litter samples were also analyzed. Carbon isotope fractionation factor (a) during SOM decomposition was estimated indirectly as the slope of the relationship between carbon isotope ratios of SOM and soil C concentrations. This study shows that litter quality and soil water play a significant role in isotope fractionation during SOM decomposition, and the carbon isotope fractionation factor, a, increases with litter quality and soil water content. However, we found that temperature had no significant impact on the a variance.
KeywordScience & Technology
WOS HeadingsScience & Technology
DOI10.1038/srep11043
URL查看原文
WOS Subject ExtendedScience & Technology - Other Topics
Indexed BySCI
WOS KeywordTHEORETICAL-ANALYSIS ; PALEOVEGETATION RECONSTRUCTION ; FOREST SOIL ; DELTA-C-13 ; TEMPERATURE ; LITTER ; PLANTS ; DISCRIMINATION ; TRANSFORMATION ; PRECIPITATION
Language英语
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000356083600001
Funding OrganizationNational Natural Science Foundation of China(41272193) ; Chinese National Basic Research Program(2014CB954202)
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10492
Collection中国科学院水利部成都山地灾害与环境研究所
Affiliation1.China Agr Univ, Dept Environm Sci & Engn, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Wang, Guoan,Jia, Yufu,Li, Wei. Effects of environmental and biotic factors on carbon isotopic fractionation during decomposition of soil organic matter[J]. SCIENTIFIC REPORTS,2015,5:DOI: 10.1038/srep11043.
APA Wang, Guoan,Jia, Yufu,&Li, Wei.(2015).Effects of environmental and biotic factors on carbon isotopic fractionation during decomposition of soil organic matter.SCIENTIFIC REPORTS,5,DOI: 10.1038/srep11043.
MLA Wang, Guoan,et al."Effects of environmental and biotic factors on carbon isotopic fractionation during decomposition of soil organic matter".SCIENTIFIC REPORTS 5(2015):DOI: 10.1038/srep11043.
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