IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Effect of soil redistribution on various organic carbons in a water- and tillage-eroded soil
Nie, X. J.1; Zhang, J. H.2,3; Cheng, J. X.1; Gao, H.1; Guan, Z. M.1
Corresponding AuthorZhang, J. H.
2016
Source PublicationSOIL & TILLAGE RESEARCH
ISSN0167-1987
EISSN1879-3444
Volume155Issue:S1Pages:1-8
SubtypeArticle
AbstractThe information gap concerning the effect of soil redistribution on various carbon (C) pools will limit our understanding regarding the fate of eroded C. In this study, we selected a water- and tillage-eroded hillslope with a horizontal length of 45 m from the Sichuan Basin, China, to determine the impact of soil redistribution on particulate organic C from 0.0053 to 2 mm soil particles (POC), light fraction organic C (LFOC), dissolved organic C (DOC) and microbial biomass C (MBC). Soil erosion was evaluated at 5-m intervals from the summit to lower parts and soil deposition at the bottom of the hillslope. Within the erosional sites, tillage erosion- and water erosion-dominated subsites were identified. The POC content firstly decrease and then increased downslope, while the DOC exhibited an opposite pattern to the POC. The MBC content decreased downslope, while the LFOC increased. Overall, the erosional sites had lower POC and LFOC contents than depositional sites, demonstrating the depletion of POC and LFOC induced by soil erosion and the enrichment of POC and LFOC by soil deposition. Conversely, the contents of DOC and MBC were greater in the erosional sites than depositional sites. It was also observed that the LFOC distribution was strongly linked to fine (<0.05 mm) soil particles, indicating a preferentially transport of the light fraction C downslope in the process of water erosion. In addition, tillage erosion-dominated subsites had higher values of POC/SOC and DOC/SOC than water erosion-dominated subsites, suggesting lower depletion of POC and DOC by tillage erosion than water erosion. Likewise, the higher MBC/SOC values were found in tillage erosion-dominated subsites, thus implying that more SOC may be assimilated into microbial C under tillage erosion than water erosion. Our study confirms the need to consider microbial response to the dynamic replacement of erosion depleted SOC. (C) 2015 Elsevier B.V. All rights reserved.
KeywordOrganic Carbon Soil Microbial Biomass Soil Redistribution Water Erosion Tillage Erosion
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.still.2015.07.003
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordMICROBIAL RESPONSES ; CESIUM-137 MEASUREMENTS ; ARABLE FIELDS ; EROSION ; MATTER ; DEPOSITION ; DYNAMICS ; LAND ; MINERALIZATION ; CROPLAND
Language英语
Quartile2区
TOP
WOS SubjectSoil Science
WOS IDWOS:000366066200001
Funding OrganizationNational Natural Science Foundation of China(41001157) ; Henan Postdoctoral Science Foundation(2012053)
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/13968
Collection山地表生过程与生态调控重点实验室
Affiliation1.Henan Polytech Univ, Sch Surveying & Land Informat Engn, Minist Land & Resources China,Field Sci Observat, Land Res Integrated Monitoring & Sustainable Util, Jiaozuo 454003, Peoples R China
2.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Nie, X. J.,Zhang, J. H.,Cheng, J. X.,et al. Effect of soil redistribution on various organic carbons in a water- and tillage-eroded soil[J]. SOIL & TILLAGE RESEARCH,2016,155(S1):1-8.
APA Nie, X. J.,Zhang, J. H.,Cheng, J. X.,Gao, H.,&Guan, Z. M..(2016).Effect of soil redistribution on various organic carbons in a water- and tillage-eroded soil.SOIL & TILLAGE RESEARCH,155(S1),1-8.
MLA Nie, X. J.,et al."Effect of soil redistribution on various organic carbons in a water- and tillage-eroded soil".SOIL & TILLAGE RESEARCH 155.S1(2016):1-8.
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