Assessment of the sources of nitrate in the Chaohu Lake, China, using a nitrogen and oxygen isotopic approach
Xi, Shanshan1,2; Liu, Guijian1,2; Zhou, Chuncai1,2; Wu, Lei1; Liu, Rongqiong1
2015-07-01
发表期刊ENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
卷号74期号:2页码:1647-1655
文章类型Article
摘要

Nitrate pollution is an increasingly serious problem in Chaohu Lake, China, with the rapid development of urbanization and industrialization surrounding the lake. The dual isotopic approach was employed to determine the sources of nitrate. Thirty-five and thirty-one water samples were collected in summer and winter, respectively. The concentrations of nitrate in the surface waters and lake waters were lower in summer than that in winter, due to the dilution of the wet deposition in summer. The concentrations of nitrate in the western part of the Chaohu Lake are higher than that in the eastern part, due to the inflow river discharge. The delta N-15 values of nitrate in winter are higher than that in summer, which is consistent with the seasonal variation of nitrate. The primary nitrate sources in northwestern part of the Chaohu Lake are the input of soil organic nitrogen and sewage/manure effluents, while the soil organic nitrogen is the main source in the southwestern and eastern part of the Chaohu Lake. Meanwhile, the data concerning delta O-18-NO3 (-) values in this study indicate that the nitrification process is one important source for the variability of nitrate in Chaohu Lake. This study can provide useful scientific guidance for the remediation and management of Chaohu Lake.

关键词Eutrophication Nitrate Source Distribution Dual Isotopes Chaohu Lake
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s12665-015-4170-8
关键词[WOS]Heavy-metals ; Ground-water ; Surface Sediments ; Taihu Lake ; River ; O-18 ; N-15 ; Denitrification ; Aquifer ; Identification
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology ; Geology ; Water Resources
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号WOS:000356871500066
出版者SPRINGER
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9294
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Liu, Guijian
作者单位1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China
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Xi, Shanshan,Liu, Guijian,Zhou, Chuncai,et al. Assessment of the sources of nitrate in the Chaohu Lake, China, using a nitrogen and oxygen isotopic approach[J]. ENVIRONMENTAL EARTH SCIENCES,2015,74(2):1647-1655.
APA Xi, Shanshan,Liu, Guijian,Zhou, Chuncai,Wu, Lei,&Liu, Rongqiong.(2015).Assessment of the sources of nitrate in the Chaohu Lake, China, using a nitrogen and oxygen isotopic approach.ENVIRONMENTAL EARTH SCIENCES,74(2),1647-1655.
MLA Xi, Shanshan,et al."Assessment of the sources of nitrate in the Chaohu Lake, China, using a nitrogen and oxygen isotopic approach".ENVIRONMENTAL EARTH SCIENCES 74.2(2015):1647-1655.
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