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Water and sediment quality in Qinghai Lake, China: a revisit after half a century

文献类型：期刊论文

作者Ao, Hongyi1; Wu, Chenxi1; Xiong, Xiong1,2; Jing, Liandong1,2; Huang, Xiaolong1,2; Zhang, Kai1,2; Liu, Jiantong1
刊名ENVIRONMENTAL MONITORING AND ASSESSMENT
出版日期2014-04-01
卷号186期号:4页码:2121-2133
关键词Water and sediment quality Qinghai Lake Ion composition
ISSN号0167-6369
通讯作者Wu, C.(chenxi.wu@ihb.ac.cn)
中文摘要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. © 2013 Springer Science+Business Media Dordrecht.
英文摘要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.
WOS标题词Science & Technology ; Life Sciences & Biomedicine
类目[WOS]Environmental Sciences
研究领域[WOS]Environmental Sciences & Ecology
关键词[WOS]TIBETAN PLATEAU ; PHOSPHORUS FRACTIONATION ; ORGANIC-MATTER ; RECORDS ; TAIHU
收录类别SCI
语种英语
WOS记录号WOS:000332150800010
公开日期2014-07-29
源URL[http://ir.ihb.ac.cn/handle/342005/19937]  
专题水生生物研究所_水环境工程研究中心_期刊论文
作者单位1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式
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.,...&Liu, Jiantong.(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.

入库方式： OAI收割

来源：水生生物研究所

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