IHB OpenIR  > 水环境工程研究中心  > 期刊论文
Water and sediment quality in Qinghai Lake, China: a revisit after half a century
Ao, Hongyi1; Wu, Chenxi1; Xiong, Xiong1,2; Jing, Liandong1,2; Huang, Xiaolong1,2; Zhang, Kai1,2; Liu, Jiantong1; Wu, C.(chenxi.wu@ihb.ac.cn)
2014-04-01
Source PublicationENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN0167-6369
Volume186Issue:4Pages:2121-2133
AbstractQinghai Lake, situated on the Qinghai-Tibet plateau, is the largest lake in China. In this study, the water and sediment quality were investigated in Qinghai Lake, three sublakes, and five major tributaries. Both Na+ and Cl- were found to be the major ions present in Qinghai Lake and the three sublakes, while Ca2+ and HCO3- dominated the tributaries. Compared with historical data from the 1960s, the concentrations of NH4+, NO3-, and soluble reactive silica have increased considerably, likely caused by increased human activities in the area. Compared to the historical data, chemical oxygen demand has increased and lake water transparency has decreased, likely related to an increase in nutrient levels. Relatively high concentrations of total nitrogen (TN) and total phosphorus (TP) were observed in Qinghai Lake sediments, although P fraction types and low water concentrations of these two indicate low possibility of transfer into the water column. The ratios of C/N suggest that the organic matter in the sediments are primarily from autochthonous sources. TN and total organic carbon in the sediment cores increased slowly up the core while TP and total inorganic carbon have been fairly constant. © 2013 Springer Science+Business Media Dordrecht.; Qinghai Lake, situated on the Qinghai-Tibet plateau, is the largest lake in China. In this study, the water and sediment quality were investigated in Qinghai Lake, three sublakes, and five major tributaries. Both Na+ and Cl- were found to be the major ions present in Qinghai Lake and the three sublakes, while Ca2+ and HCO3- dominated the tributaries. Compared with historical data from the 1960s, the concentrations of NH4 (+), NO3 (-), and soluble reactive silica have increased considerably, likely caused by increased human activities in the area. Compared to the historical data, chemical oxygen demand has increased and lake water transparency has decreased, likely related to an increase in nutrient levels. Relatively high concentrations of total nitrogen (TN) and total phosphorus (TP) were observed in Qinghai Lake sediments, although P fraction types and low water concentrations of these two indicate low possibility of transfer into the water column. The ratios of C/N suggest that the organic matter in the sediments are primarily from autochthonous sources. TN and total organic carbon in the sediment cores increased slowly up the core while TP and total inorganic carbon have been fairly constant.
SubtypeArticle
KeywordWater And Sediment Quality Qinghai Lake Ion compositIon
Department(1) Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; (2) University of Chinese Academy of Sciences, Beijing, 100039, China
DOI10.1007/s10661-013-3522-7
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000332150800010
WOS KeywordTIBETAN PLATEAU ; PHOSPHORUS FRACTIONATION ; ORGANIC-MATTER ; RECORDS ; TAIHU
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/19937
Collection水环境工程研究中心_期刊论文
Corresponding AuthorWu, C.(chenxi.wu@ihb.ac.cn)
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Ao, Hongyi,Wu, Chenxi,Xiong, Xiong,et al. Water and sediment quality in Qinghai Lake, China: a revisit after half a century[J]. ENVIRONMENTAL MONITORING AND ASSESSMENT,2014,186(4):2121-2133.
APA Ao, Hongyi.,Wu, Chenxi.,Xiong, Xiong.,Jing, Liandong.,Huang, Xiaolong.,...&Wu, C..(2014).Water and sediment quality in Qinghai Lake, China: a revisit after half a century.ENVIRONMENTAL MONITORING AND ASSESSMENT,186(4),2121-2133.
MLA Ao, Hongyi,et al."Water and sediment quality in Qinghai Lake, China: a revisit after half a century".ENVIRONMENTAL MONITORING AND ASSESSMENT 186.4(2014):2121-2133.
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