IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Measurements of Nitrate Leaching from a Hillslope Cropland in the Central Sichuan Basin, China
Zhu, Bo; Wang, Tao; Kuang, Fuhong; Luo, Zhuanxi; Tang, Jialiang; Xu, Taiping
Corresponding AuthorZhu, Bo
2009-07-01
Source PublicationSOIL SCIENCE SOCIETY OF AMERICA JOURNAL
ISSN0361-5995
Volume73Issue:4Pages:1419-1426
SubtypeArticle
AbstractNitrate losses through leaching were studied in a crop field in the central Sichuan Basin, southwestern China, during 2003 to 2006. Nitrate accumulations and losses via leaching were measured using two methods: a simulation with sampled soil profiles and field monitoring in situ at a 7% slope. The results showed that NO(3) was accumulated in the dry season and leached in the rainy season. No spatial dependence of soil NO(3) distribution could be distinguished along the hillslope due to complex water flow. The soil interflow was the major driver of NO(3) leaching losses from the experimental plots. The average annual discharge of the interflows was 148 mm, accounting for 63% of total runoff in the rainy season in 2003 to 2006. The interflow water contained high NO(3)-N concentrations. The highest NO(3)-N concentration and loss flux were detected in storm runoff after a long drought in 2006. The NO(3)-N leaching through interflow showed clear annual and seasonal patterns, and largely occurred in the stages from stamen elongation to maturity of maize (Zea mays L.) with a flux of 2.2 g m(-2), about 69% of the total annual loss flux. Annual estimated losses of NO(3)-N through interflow ranged from 20 to 53, with an average of 36 kg ha(-1) yr(-1). This study indicates that croplands on hillslopes with regosols are vulnerable to NO(3) leaching. The interflow discharge monitoring method together with effluent NO(3) content analysis used in this study proved to be useful and effective for quantifying NO(3) leaching losses at the field scale in hillslope areas.
KeywordSoil Science
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.2136/sssaj2008.0259
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordSHALLOW GROUND-WATER ; NEW-ZEALAND ; NITROGEN ; SOIL ; FLOW ; ACCUMULATION ; AGRICULTURE ; FERTILIZER ; DRAINAGE ; EFFLUENT
Language英语
WOS SubjectSoil Science
WOS IDWOS:000267859100041
Funding OrganizationNatural Science Foundation of China(40571093) ; National Basic Research Program of China(2005CB121108) ; Professor Changsheng Li (Univ. of New Hampshire)
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10548
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
AffiliationChinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Bo,Wang, Tao,Kuang, Fuhong,et al. Measurements of Nitrate Leaching from a Hillslope Cropland in the Central Sichuan Basin, China[J]. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,2009,73(4):1419-1426.
APA Zhu, Bo,Wang, Tao,Kuang, Fuhong,Luo, Zhuanxi,Tang, Jialiang,&Xu, Taiping.(2009).Measurements of Nitrate Leaching from a Hillslope Cropland in the Central Sichuan Basin, China.SOIL SCIENCE SOCIETY OF AMERICA JOURNAL,73(4),1419-1426.
MLA Zhu, Bo,et al."Measurements of Nitrate Leaching from a Hillslope Cropland in the Central Sichuan Basin, China".SOIL SCIENCE SOCIETY OF AMERICA JOURNAL 73.4(2009):1419-1426.
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