IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Characteristics of dissolved organic carbon leaching from hillslope cropland of purple soil in the Sichuan Basin, China
Li, Taikui1,2; Zhu, Bo1; Wang, Xiaoguo1; Kou, Changlin2
Corresponding AuthorLi Taikui
2013
Source PublicationJOURNAL OF FOOD AGRICULTURE & ENVIRONMENT
ISSN1459-0255
EISSN1459-0263
Volume11Issue:2Pages:1522-1527
SubtypeArticle
Abstract

; Dissolved organic carbon (DOC) is an essential component of the carbon cycle from terrestrial to aquatic systems. Despite the large number of studies reporting on DOC losses from forest soils and in surface waters there is little published data on exports from sloping cropland. DOC leaching was studied in a hillslope cropland with slope gradient of 7% in the central Sichuan Basin, southwestern China during 2009-2010. The interflow was the major driving force of DOC leaching losses from the sloping cropland. DOC concentrations changed slightly during rainfall process and showed a positive correlation with interflow discharge velocity. Soil DOC content increased distinctly from sowing to stamen stage, and then decreased to the minimum at harvest in the maize grown season. This result responded with seasonal change of DOC concentrations of the interflow water. Annual loss flux of DOC through interflow ranged from 5.62 to 8.53, with an average of 7.08 kg ha(-1) yr(-1). DOC leaching flux through the interflow showed clear seasonal patterns with a flux of 4.11-7.81 kg ha(-1), about 73-91% of the annual total loss occurred in the stages from stamen to maturity of maize. This study clarifies the key mechanism and flux of DOC loss in hillslope cropland, and provides basic data for scientific evaluation of soil organic carbon cycle.
KeywordDoc Interflow Leaching Flux Sloping Cropland Precipitation
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedFood Science & Technology
Indexed BySCI
WOS KeywordMATTER ; FLUXES ; WATER ; TOPSOILS ; NITROGEN ; EXPORT
Language英语
Quartile4区
TOP
WOS SubjectFood Science & Technology
WOS IDWOS:000323212800001
Funding OrganizationNational Water Pollution Control and Management Technology Major Project(2012ZX07205-001) ; Natural Science Foundation of China(40901134)
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6687
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazard & Environm, Chengdu 610041, Peoples R China
2.Henan Acad Agr Sci, Inst Plant Nutr Resources & Environm Sci, Zhengzhou 450002, 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
Li, Taikui,Zhu, Bo,Wang, Xiaoguo,et al. Characteristics of dissolved organic carbon leaching from hillslope cropland of purple soil in the Sichuan Basin, China[J]. JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT,2013,11(2):1522-1527.
APA Li, Taikui,Zhu, Bo,Wang, Xiaoguo,&Kou, Changlin.(2013).Characteristics of dissolved organic carbon leaching from hillslope cropland of purple soil in the Sichuan Basin, China.JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT,11(2),1522-1527.
MLA Li, Taikui,et al."Characteristics of dissolved organic carbon leaching from hillslope cropland of purple soil in the Sichuan Basin, China".JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT 11.2(2013):1522-1527.
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