IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Nitrate loss via overland flow and interflow from a sloped farmland in the hilly area of purple soil, China
Wang, Tao; Zhu, Bo
Corresponding AuthorZhu, B (朱波)
2011
Source PublicationNUTRIENT CYCLING IN AGROECOSYSTEMS
ISSN1385-1314
EISSN1573-0867
Volume90Issue:3Pages:309-319
SubtypeArticle
AbstractNitrate losses through runoff (both overland flow and interflow) represent a significant portion of the nitrogen (N) biogeochemical cycle. The mechanisms of this cycle have been well documented for flat agricultural lands. It is unclear, however, how nitrate loss takes place in sloping farmlands of purple soil. This paper reports the finding of a field experiment examining nitrate losses due to overland flow and interflow along sloping farmland sites dominated by a regosol known as purple soil in the Sichuan Basin, Southwest China. During rainfall events, the nitrate contents in the overland flow initially increased and then decreased gradually, however, the nitrate contents in the interflow increased and then approached to a steady status. The average nitrate concentrations in the overland flow and the interflow were 0.7 +/- A 0.2 and 21.7 +/- A 2.1 mg N L-1, respectively. The annual nitrate loss loads through the overland flow and the interflow were 0.9 +/- A 0.1 and 33.5 +/- A 2.7 kg N ha(-1), respectively accounting for 0.6 and 22% of the fertilizer applied in the growing season. Nitrate was predominantly lost via interflow in the sloping farmland in Sichuan Basin, Southwest China. The experimental farmland was located in the upper stream of the Yangtze River, and the conclusions yielded from this study can be applied to interpreting the eutrophication and groundwater pollution patterns that are currently occurring in this watershed.
KeywordSloped Farmland Nitrate Loss Overland Flow Interflow Purple Soil
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s10705-011-9431-7
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordNUTRIENT LOSSES ; WATER-QUALITY ; SICHUAN BASIN ; NEW-YORK ; LAND-USE ; NITROGEN ; POLLUTION ; RUNOFF ; CATCHMENTS ; UPLAND
Language英语
Quartile3区
TOP
WOS SubjectSoil Science
WOS IDWOS:000291487500002
Funding OrganizationNatural Science Foundation of China(40901255 ; Special Project on Water Pollution Control by the National Science & Technology Pillar Program(2009ZX07104-002) ; 40571093)
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5505
Collection山地表生过程与生态调控重点实验室
AffiliationChinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolvement & Regulat, Chengdu 610041, 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
Wang, Tao,Zhu, Bo. Nitrate loss via overland flow and interflow from a sloped farmland in the hilly area of purple soil, China[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2011,90(3):309-319.
APA Wang, Tao,&Zhu, Bo.(2011).Nitrate loss via overland flow and interflow from a sloped farmland in the hilly area of purple soil, China.NUTRIENT CYCLING IN AGROECOSYSTEMS,90(3),309-319.
MLA Wang, Tao,et al."Nitrate loss via overland flow and interflow from a sloped farmland in the hilly area of purple soil, China".NUTRIENT CYCLING IN AGROECOSYSTEMS 90.3(2011):309-319.
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