Effects of river-lake interactions in water and sediment on phosphorus in Dongting Lake, China
Effects of river-lake interactions in water and sediment on phosphorus in Dongting Lake, China
复制标题
洞庭湖水体和沉积物河湖相互作用对磷的影响
DOI：
10.1007/s11356-017-9873-9
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发表时间：
2017-08
影响因子：
5.8
通讯作者：
Wang Xing
中科院分区：
文献类型：
--
作者：
Tian Zebin;Zheng Binghui;Wang Lijing;Li Hong;Wang Xing
洞庭湖作为一个大型河流相连的湖泊，受到人为活动、流域内上游支流的排放以及流域外与长江（YR）相连的水补给的影响。这使得湖泊的磷循环比其他不相连的湖泊更加复杂。在这里，我们计算了剖面通量，并运行了一个水动力模型来研究磷(P)的变化，以响应YR、四条支流和湖泊之间水和沉积物相互作用的变化。结果表明，颗粒P是主要形式，与悬浮泥沙呈显著的线性关系（r2 = 0.906）。三峡水库自2003年以来的运行与三峡水库三口来水输沙减少密切相关，导致洞庭湖西部总磷（TP）浓度下降。然而，这种减少的影响和范围相当有限。与YR的有限作用相比，元江支流TP通量的增加控制了洞庭湖西部出海口TP浓度。除了YR和支流的影响外，洞庭湖东部的人为活动（挖沙）也通过泥沙再悬浮导致S10区域周围TP浓度较高。研究结果表明，相对于流域外连通长江TP通量和输沙量的减少，流域内因素（支流TP输入增加和采沙）对洞庭湖TP变化的影响更大。
As a large river connected lake, Dongting Lake is influencedbyanthropogenic activitiesand the dischargefrom its upstream tributaries in the lake basin and by the water recharge via a connection to the Yangtze River (YR) outside the basin. This makes the lake phosphorous cycle more complexthanthatinotherdisconnectedlakes.Here,wecalculated section fluxes and ran a hydrodynamic model to investigate the phosphorus (P) variations in response to the changing interactions in the water and sediment between the YR, four tributaries, and the lake. Results show that particulate P was the dominant form with a significant linear relationship with suspended sediment (r2 = 0.906). The sediment input reduction from the YR through three water inlets, which is closely related to the Three Gorges Reservoir operation since 2003, led to a decrease in the total P (TP) concentration in the western Dongting Lake. However, the impact and range of this decreasewerefairlylimited.Comparedwiththelimitedeffect of the YR, the raised TP flux from the Yuanjiang tributary controlled the TP concentration at the outlet of the western Dongting Lake. Apart from the influence of the YR and the tributaries, anthropogenic activities (sand dredging) in the eastern Dongting Lake also contributed to a high TP concentration around the S10 area through sediment resuspension. We suggest that, compared with the reduction in TP flux and sediment load from the connected Yangtze River outside the basin, the elements within the basin (increased TP input from tributaries and sand dredging) have a greater effect on the variations of TP in Dongting Lake.
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影响因子：
3.7
作者：
P. Bukaveckas;D. Guelda;Jeffrey D. Jack;R. Koch;Tim Sellers;J. Shostell
通讯作者：
P. Bukaveckas;D. Guelda;Jeffrey D. Jack;R. Koch;Tim Sellers;J. Shostell
影响因子：
--
作者：
Tian Ze-bi
通讯作者：
Tian Ze-bi
大型河流-湖泊系统中的传输轨迹和停留时间的估计：使用组合模型方法在鄱阳湖（中国）的应用
影响因子：
3.4
作者：
李云良;姚静
通讯作者：
姚静
影响因子：
4
作者：
Garnier Josette;B. Leporcq;N. Sánchez;X. Philippon
通讯作者：
Garnier Josette;B. Leporcq;N. Sánchez;X. Philippon
DOI：
10.1016/j.scitotenv.2008.08.002
发表时间：
2008-08
期刊：
The Science of the total environment
影响因子：
--
作者：
P. Withers;H. Jarvie
通讯作者：
P. Withers;H. Jarvie