Impacts of water residence time on nitrogen budget of lakes and reservoirs
文献类型：期刊
作者：Tong, Yindong[1]
机构：[1]Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China.;
[2]Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China.;
[3]Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China.;
[4]Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China.;
[5]Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China.;
[6]Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China.;
[7]Renmin Univ China, Sch Environm & Nat Resources, Beijing 100872, Peoples R China.;
[8]Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China.;
[9]Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China.;
[10]Norwegian Inst Water Res, N-0349 Oslo, Norway.;
通讯作者：Lin, Y (reprint author), Norwegian Inst Water Res, N-0349 Oslo, Norway.
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT影响因子和分区
年：2019
卷：646
页码：75-83
收录情况：SCI(E)(WOS:000445164800009)
ISSN：0048-9697
关键词：Water residence time; Nitrogen; Ecosystem-scale mass balance; Removal rate; Lake and reservoir
所属部门：环境学院
摘要：As an important factor related to the self-purification capacity (e.g. denitrification, burial rate, and downstream output) in aquatic systems, water residence time (WRT) has great impacts on the nitrogen (N) dynamics and its removal process in lakes and reservoirs. In this study, we have analysed the impacts of WRT on the change rates of total nitrogen (TN) concentrations in 50 waterbodies (including 33 lakes and 17 reservoirs) in China, with different change trends (e.g. increasing trends and ...More
As an important factor related to the self-purification capacity (e.g. denitrification, burial rate, and downstream output) in aquatic systems, water residence time (WRT) has great impacts on the nitrogen (N) dynamics and its removal process in lakes and reservoirs. In this study, we have analysed the impacts of WRT on the change rates of total nitrogen (TN) concentrations in 50 waterbodies (including 33 lakes and 17 reservoirs) in China, with different change trends (e.g. increasing trends and decreasing trends) and TN concentrations during 2012-2016. Based on the annual ecosystem-scale N mass balance, TN input and output flux in the waterbodies are estimated. The results showed that the decreases of TN concentrations usually occur in the waterbodies with the relatively high TN concentrations in 2012, and WRT has significant impacts on the TN change rates in the waterbodies. Longer WRT could slow down the TN increasing rates in the waterbodies acting as N sinks, but could accelerate the removal from the waterbodies acting as N sources. Higher water phosphorus (P) concentrations could also be beneficial for the faster N removal from the waterbodies, which is mediated via the coupled processes regulating the N transfer from water column to anoxic sediments. China has recently issued the "lake-chief" systems, addressing the specific and flexible strategies for water pollution control in different lakes. The self-purification capacity through denitrification and burial rate, which are closely related to WRT, should be taken into consideration when making specific water management plans in the future. (C) 2018 Published by Elsevier B.V. ...Hide
DOI：10.1016/j.scitotenv.2018.07.255
百度学术：Impacts of water residence time on nitrogen budget of lakes and reservoirs
语言：外文
被引频次：7
人气指数：3
浏览次数：3
基金：National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41501517, 41630748]; Natural Science Foundation of TianjinNatural Science Foundation of Tianjin [16JCQNJC08300, 15YFYSSF00010]
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