IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Soil organic carbon loss from carbon dioxide and methane emissions, as well as runoff and leaching on a hillslope of Regosol soil in a wheat-maize rotation
Hua, Keke1,2; Zhu, Bo1; Wang, Xiaoguo1
Corresponding AuthorZhu, Bo
2015
Source PublicationNUTRIENT CYCLING IN AGROECOSYSTEMS
ISSN1385-1314
EISSN1573-0867
Volume103Issue:1Pages:75-86
SubtypeArticle
AbstractSoil carbon dioxide (CO2) and methane (CH4) emissions, as well as runoff and leaching are major pathways of soil organic carbon (SOC) loss, which affect SOC sequestration in croplands. However, fluxes and relationships of the four pathways are still poorly understood. Static chamber-GC techniques were used to measure soil heterotrophic respiration rate and CH4 emission flux on hillslope upland of Regosol soil in Southwest China under traditional mineral fertilizer treatment from 2010 to 2012. Synchronously, SOC loss flux via overland flow, leaching and sediment was measured using free-drained lysimeters (8 m x 4 m). Average annual cumulative soil CO2 emission and CH4 uptake fluxes were 462.8 +/- A 52.2 and -1.1 +/- A 0.16 g cm(-2). Average annual cumulative dissolved organic carbon (DOC) loss fluxes via overland flow and leaching were 0.16 +/- A 0.03 and 0.92 +/- A 0.08 g cm(-2), respectively and organic C loss via sediment was 2.2 +/- A 0.3 g cm(-2). Relationship between DOC loss fluxes and soil heterotrophic respiration rates under natural rainfall events could be described by a significant exponential decay function (R = -0.63, P < 0.01). Moreover, a significantly negative correlation was also found between DOC loss flux and soil DOC content in topsoil at 15 cm depth (R = -0.75, P < 0.05). In conclusion, DOC loss decreases soil DOC content and is an underrated negative regulating factor of soil CO2 emission, especially in the regions where high DOC losses occur.
KeywordSoil Carbon Dioxide Emission Dissolved Organic Carbon Loss Flux Natural Rainfall
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s10705-015-9722-5
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordNITROGEN-FERTILIZER ; CLIMATE-CHANGE ; SICHUAN BASIN ; GAS EMISSIONS ; UPLAND SOILS ; PURPLE SOIL ; CO2 EFFLUX ; LAND-USE ; OXIDATION ; RESPIRATION
Language英语
Quartile3区
TOP
WOS SubjectSoil Science
WOS IDWOS:000361433200006
Funding OrganizationNatural Science Foundation of China(41401331) ; National Program on Key Basic Research Plan of China(2012CB417101)
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/11000
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, 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 Nutrient Recycling Resources &, 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
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GB/T 7714
Hua, Keke,Zhu, Bo,Wang, Xiaoguo. Soil organic carbon loss from carbon dioxide and methane emissions, as well as runoff and leaching on a hillslope of Regosol soil in a wheat-maize rotation[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2015,103(1):75-86.
APA Hua, Keke,Zhu, Bo,&Wang, Xiaoguo.(2015).Soil organic carbon loss from carbon dioxide and methane emissions, as well as runoff and leaching on a hillslope of Regosol soil in a wheat-maize rotation.NUTRIENT CYCLING IN AGROECOSYSTEMS,103(1),75-86.
MLA Hua, Keke,et al."Soil organic carbon loss from carbon dioxide and methane emissions, as well as runoff and leaching on a hillslope of Regosol soil in a wheat-maize rotation".NUTRIENT CYCLING IN AGROECOSYSTEMS 103.1(2015):75-86.
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