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
通讯作者Zhu, Bo
2009-07-01
发表期刊SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
ISSN0361-5995
卷号73期号:4页码:1419-1426
文章类型Article
摘要Nitrate 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.
关键词Soil Science
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.2136/sssaj2008.0259
研究领域[WOS]Agriculture
收录类别SCI
关键词[WOS]SHALLOW GROUND-WATER ; NEW-ZEALAND ; NITROGEN ; SOIL ; FLOW ; ACCUMULATION ; AGRICULTURE ; FERTILIZER ; DRAINAGE ; EFFLUENT
语种英语
WOS类目Soil Science
WOS记录号WOS:000267859100041
项目资助者Natural Science Foundation of China(40571093) ; National Basic Research Program of China(2005CB121108) ; Professor Changsheng Li (Univ. of New Hampshire)
引用统计
被引频次:79[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.imde.ac.cn/handle/131551/10548
专题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
作者单位Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
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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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