A Comparison Study of the Nutrient Fluxes in a Newly Impounded Riverine Lake (Longjing Lake): Model Calculation and Sediment Incubation
A Comparison Study of the Nutrient Fluxes in a Newly Impounded Riverine Lake (Longjing Lake): Model Calculation and Sediment Incubation
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新蓄水河道湖泊（龙井湖）营养盐通量对比研究：模型计算与沉积物孵化
DOI：
10.3390/w14132015
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发表时间：
2022-06
期刊：
影响因子：
3.4
通讯作者：
Hong Zhang
中科院分区：
文献类型：
--
作者：
Cheng Du;Yan’an Pan;Wenzhong Tang;Qiansheng Yue;Hong Zhang
扩散通量是估算富营养化湖泊内源氮磷贡献的重要工具。主要有两种方法，即，基于原位孔隙水采样和实验室培养中的水质监测的模型计算。这两种方法得到的结果很少进行比较，降低了内部贡献和以下管理策略的有效性。本研究采集了中国某湖泊的沉积物样品，通过模型计算和室内培养的方法估算了该湖泊的通量。结果表明，两种方法测得的通量有一个数量级的差异。从模型计算得到的平均值氨（NH 4 +-N）和可溶性活性磷酸盐（SRP）分别为24.4和1.30。底泥培养未受干扰组的NH_4 ~+-N和SRP平均值分别为7.84和5.47，底泥培养受干扰组的NH_4 ~+-N和SRP平均值分别为16.2和4.06。沉积物培养是多种影响因素的组合来获得通量，而孔隙水模型是基于分子扩散作为获得通量的理论基础。根据这两种方法的不同研究思路，在以去除污染物为主要目标的湖泊内源释放管理中，推荐使用沉积物培养法作为研究工具;在以控制污染物为主要目标的湖泊内源释放管理中，推荐使用孔隙水模型作为研究工具。在评估氮的扩散通量时，建议选择稳定形式的总溶解氮来讨论通量结果。
Diffusion flux is an essential tool to estimate the contribution of internal nitrogen and phosphorus in eutrophic lakes. There are mainly two methods, i.e., model calculation based on in-situ porewater sampling and water quality monitoring in laboratory incubation. The results obtained by the two methods are rarely compared, decreasing the validity of internal contribution and following management strategies. In this study, sediment samples were collected from a lake in China, then the fluxes were estimated by model calculation and laboratory incubation. The results show that there is an order of magnitude difference in the fluxes measured by these two methods. The mean values of ammonia (NH4+-N) and soluble reactive phosphate (SRP) obtained from the model calculations were 24.4 and 1.30, respectively. The mean values of NH4+-N and SRP obtained in the undisturbed group of sediment incubation were 7.84 and 5.47, respectively, and in the disturbed group of sediment incubation were 16.2 and 4.06, respectively. Sediment incubation is a combination of multiple influencing factors to obtain fluxes, while porewater model is based on molecular diffusion as the theoretical basis for obtaining fluxes. According to the different approaches of the two methods, sediment incubation is recommended as a research tool in lake autochthonous release management when the main objective is to remove pollution, while the porewater model is recommended as a research tool when the main objective is to control pollution. When assessing the diffusive flux of nitrogen, it is recommended to choose the stable form of total dissolved nitrogen to discuss the flux results.
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影响因子：
3.4
作者：
Yuanyun Wei;Manyin Zhang;L. Cui;Xu Pan;Weiwei Liu;Wei Li;Yinru Lei
通讯作者：
Yuanyun Wei;Manyin Zhang;L. Cui;Xu Pan;Weiwei Liu;Wei Li;Yinru Lei
影响因子：
5.8
作者：
Mengyuan Zhu;G. Zhu;Linlin Zhao;Xin Yao;Yunlin Zhang;G. Gao;B. Qin
通讯作者：
Mengyuan Zhu;G. Zhu;Linlin Zhao;Xin Yao;Yunlin Zhang;G. Gao;B. Qin
来自藻类和水生植物的有机物对浅淡水湖沉积物中厌氧铵氧化与三价铁还原的影响
影响因子：
5.8
作者：
Zongbao Yao;Liu Yang;Na Song;Changhui Wang;Helong Jiang
通讯作者：
Helong Jiang
影响因子：
12.8
作者：
Ma, Shuo-Nan;Wang, Hai-Jun;Jeppesen, Erik
通讯作者：
Jeppesen, Erik
影响因子：
11.4
作者：
Eek, Espen;Cornelissen, Gerard;Breedveld, Gijs D.
通讯作者：
Breedveld, Gijs D.