Research on nutrient pollution load in Lake Taihu, China
Research on nutrient pollution load in Lake Taihu, China
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太湖养分污染负荷研究
DOI：
10.1007/s11356-017-9384-8
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发表时间：
2017
影响因子：
5.8
通讯作者：
Kaiming Hu
中科院分区：
文献类型：
--
作者：
Jianjian Wang;Qiaohua Zhao;Yong Pang;Kaiming Hu
太湖富营养化是内外污染共同作用的结果。研究太湖水体中总氮（TN）和总磷（TP）的来源和通量负荷对控制和管理太湖富营养化问题具有重要意义。采用周边河流水文水质调查、降水调查和悬浮泥沙模拟等方法，分析了太湖总氮和总磷的来源，并估算了总氮和总磷的通量负荷。结果表明：(1)周边河流、大气沉降和泥沙悬浮是全氮和总磷的3个主要来源，年通量负荷分别为29.6万和2.8万t；(2)总氮通量负荷中，周边河流径流贡献61.1%，大气沉降贡献23.5%，两者均存在季节差异。沉积物释放的总氮占太湖总氮负荷的15.4%；(3)总磷通量负荷中，周边河流占42.8%，且呈现季节变化。大气沉降和沉积物释放分别占17.9%和39.3%，季节变化不显著。定量分析了太湖总氮和总磷的来源和负荷，为太湖污染控制提供了依据。
The eutrophication of Lake Taihu is the joint result of internal and external pollution. Research on the sources and flux loads of total nitrogen (TN) and total phosphorus (TP) has great significance for the control and management of the eutrophication issues facing Lake Taihu. We used hydrologic and water quality surveys of the surrounding rivers, precipitation investigations, and an experimental simulation of suspended sediment to analyze the sources of TN and TP to Lake Taihu and to estimate the flux loads of TN and TP. Our results indicate that (1) surrounding rivers, atmospheric deposition, and sediment suspension were the three main sources of TN and TP, with annual flux loads of 29.6 thousand t and 2.8 thousand t, respectively; (2) for the flux load of TN, influxes from surrounding rivers accounted for 61.1%, while atmospheric deposition contributed 23.5%, with both of these sources varying seasonally. Total nitrogen released from sediments contributed 15.4% of the TN load of Lake Taihu; (3) for TP flux load, surrounding rivers accounted for 42.8% and also showed seasonal variation. Atmospheric deposition and sediment release accounted for 17.9 and 39.3% with no significant seasonal variation. This article quantitatively analyzed the sources and loads of TN and TP and provided a basis for pollution control in Lake Taihu.