IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Forms and Fluxes of Soil Organic Carbon Transport via Overland Flow, Interflow, and Soil Erosion
Hua, Keke1,2; Zhu, Bo1; Wang, Xiaoguo1; Tian, Linlin1
Corresponding AuthorZhu, Bo
2016-07-01
Source PublicationSOIL SCIENCE SOCIETY OF AMERICA JOURNAL
ISSN0361-5995
Volume80Issue:4Pages:1011-1019
SubtypeArticle
AbstractThe contributions of hydrological pathways (including overland flow, interflow, and soil erosion) to lateral soil organic carbon (SOC) transport have remained unclear until now. Hillslopes were monitored using free-draining lysimeters (8 m by 4 m) to quantify dissolved organic carbon (DOC) losses due to overland flow and interflow and the total organic carbon (TOC), water extractable organic carbon (WEOC), particulate organic carbon (POC), and mineral-associated organic carbon (MOC) fractions in sediments from sloping croplands containing Regosols in Southwest China. The average annual DOC losses due to overland flow and interflow were 158.8 +/- 33.0 and 750.4 +/- 79.3 mg C m(-2), respectively, and the TOC lost with sediment was 2201.0 +/- 429.2 mg C m(-2). Overland flow, interflow, and sediment accounted for 5, 24, and 71%, respectively, of the annual SOC losses. The average annual DOC, POC, and MOC loss fluxes were 918.6 +/- 115.3, 375.2 +/- 94.4, and 1816.4 +/- 331.8 mg C m(-2), respectively. The MOC contents in the sediments were positively correlated with rainfall, and the DOC concentrations in the interflow water were negatively correlated with rainfall. In conclusion, soil erosion is the dominant hydrological route for lateral SOC transport, and interflow is another crucial route that is usually underestimated. Soil organic C is mainly lost in the forms of MOC and DOC, which is an important component of water ecosystems. Therefore, the mitigation of SOC losses would be more effective if soil erosion and interflow conservation practices were adopted together, particularly for Regosols on hillslopes.
KeywordSoil Organic Carbon
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.2136/sssaj2015.12.0444
URL查看原文
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordWATER EROSION ; MATTER ; RUNOFF ; IMPACT ; REDISTRIBUTION ; CULTIVATION ; HILLSLOPE ; CROPLAND ; FORESTS ; BALANCE
Language英语
WOS SubjectSoil Science
WOS IDWOS:000386463000019
Funding OrganizationNational Program on Key Basic Research Projects of China(2012CB417101) ; Natural Science Foundation of China(41430750 ; Key laboratory of Nutrient Recycling, Resources and Environment Performance Evaluation of Anhui Province(1606c08231) ; 41401331)
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Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18155
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
2.Anhui Acad Agr Sci, Soil & Fertilizer Res Inst, Anhui Prov Key Lab Nutr Recycling Resources & Env, Hefei 230031, 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
Hua, Keke,Zhu, Bo,Wang, Xiaoguo,et al. Forms and Fluxes of Soil Organic Carbon Transport via Overland Flow, Interflow, and Soil Erosion[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2016,80(4):1011-1019.
APA Hua, Keke,Zhu, Bo,Wang, Xiaoguo,&Tian, Linlin.(2016).Forms and Fluxes of Soil Organic Carbon Transport via Overland Flow, Interflow, and Soil Erosion.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,80(4),1011-1019.
MLA Hua, Keke,et al."Forms and Fluxes of Soil Organic Carbon Transport via Overland Flow, Interflow, and Soil Erosion".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 80.4(2016):1011-1019.
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