IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Dissolved organic carbon loss fluxes through runoff and sediment on sloping upland of purple soil in the Sichuan Basin
Hua, Keke1,2; Zhu, Bo1; Wang, Xiaoguo1
Corresponding AuthorZhu, Bo
2014
Source PublicationNUTRIENT CYCLING IN AGROECOSYSTEMS
ISSN1385-1314
EISSN1573-0867
Volume98Issue:2Pages:125-135
SubtypeArticle
AbstractRunoff is a major driver for dissolved organic carbon (DOC) diffusing into aquatic ecosystems. Transport of DOC in runoff is important in the C cycle of soils in an agricultural ecosystem. This study provides a combined dataset on DOC loss pathways and fluxes from sloping upland in the purple soil area of southwestern China. A free-drain lysimeter experiment was conducted to quantify DOC loss through overland flow (2010-2012), interflow (2010-2012) and sediment (2011-2012). Average annual cumulative discharges of overland and interflow were 58.3 +/- A 3.1 and 289.4 +/- A 5.4 mm, accounting for 6.8 and 33.8 % of the totals during the entire rainy season, respectively. Average annual cumulative sediment loss flux was 183.5 +/- A 14.6 g m(-2). Average DOC concentrations in overland flow and interflow were 3.44 +/- A 0.36 and 3.04 +/- A 0.24 mg L-1, respectively. Average DOC content in sediment was 73.76 +/- A 4.09 mg kg(-1). The relationship between DOC concentration and discharge in overland flow events could be described by a significant exponential decaying function (R = 0.53, P = 0.027). Average annual DOC loss fluxes through overland flow, interflow and sediment were 163.6 +/- A 28.5, 865.5 +/- A 82.5 and 9.4 +/- A 1.5 mg m(-2), respectively, and total DOC loss was 1,038.5 +/- A 112.5 mg m(-2). The results suggest that interflow is the major driver of DOC leaching loss on sloping upland. It is shown that interflow is fundamentally important for reducing DOC loss on sloping croplands in the Sichuan Basin and possibly beyond.
KeywordSloping Upland Doc Loss Overland Flow Interflow Sediment
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s10705-014-9601-5
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordRAINFALL INTENSITY ; CHINA ; PARTICULATE ; CATCHMENTS ; TRANSPORT ; DYNAMICS ; CROPLAND ; SYSTEMS ; STREAMS ; SURFACE
Language英语
Quartile3区
TOP
WOS SubjectSoil Science
WOS IDWOS:000332583100002
Funding OrganizationNational Program on Key Basic Research Plan of China(2012CB417101) ; Special Program of Strategical Science & Technology of the Chinese Academy of Sciences(XDA05050506) ; Natural Science Foundation of China(41371302) ; Talent introduction Program for Anhui Academy of Agricultural Sciences
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9957
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, 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. Dissolved organic carbon loss fluxes through runoff and sediment on sloping upland of purple soil in the Sichuan Basin[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2014,98(2):125-135.
APA Hua, Keke,Zhu, Bo,&Wang, Xiaoguo.(2014).Dissolved organic carbon loss fluxes through runoff and sediment on sloping upland of purple soil in the Sichuan Basin.NUTRIENT CYCLING IN AGROECOSYSTEMS,98(2),125-135.
MLA Hua, Keke,et al."Dissolved organic carbon loss fluxes through runoff and sediment on sloping upland of purple soil in the Sichuan Basin".NUTRIENT CYCLING IN AGROECOSYSTEMS 98.2(2014):125-135.
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