鄱阳湖区氮磷污染物分布、转移和削减特征
发布时间：2018-08-15 13:59
【摘要】：根据入湖污染负荷监测、调查资料和不同水文条件下流场-水质同步监测资料,应用数理统计方法,研究了鄱阳湖氮磷营养物质分布、转移和削减特征。研究结果显示:(1)总磷、总氮是影响鄱阳湖水环境质量的主要污染物,入湖污染负荷与入湖径流水量紧密正相关。(2)鄱阳湖换水周期短,水流更换频繁,氮磷污染物在湖区不会充分混合;氮磷超标水域随着水体流动,逐步向下游转移、扩散;湖水位处于消落状态,通江水道部分水域氮磷浓度超标。(3)湖相状态水环境比河相好,湖相状态一般不会出现大面积的总氮和总磷同时超标。(4)鄱阳湖水环境勉强维持Ⅲ类标准,如果出现损害环境的人类活动,脆弱的水环境将会恶化。针对这些特征提出了保护鄱阳湖"一湖清水"的对策建议。
[Abstract]:The distribution, transfer and reduction of nitrogen and phosphorus nutrients in Poyang Lake were studied by means of mathematical statistics according to the monitoring data of pollution load, investigation data and synchronous monitoring data of flow field and water quality under different hydrological conditions. The results show that: (1) Total phosphorus and total nitrogen are the main pollutants affecting the water environment quality of Poyang Lake, and the pollution load of the lake is closely related to the runoff water quantity. (2) the water exchange period is short and the water flow changes frequently in Poyang Lake. Nitrogen and phosphorus pollutants will not be fully mixed in the lake area; nitrogen and phosphorus excess waters will gradually move downstream with the flow of water, and the lake water level will be in a state of decline, and the nitrogen and phosphorus concentrations in some parts of the Tongjiang waterway will exceed the standard. (3) the water environment in the lacustrine phase is better than that in the river. In general, large areas of total nitrogen and total phosphorus do not exceed the standard. (4) the water environment of Poyang Lake barely maintains the class 鈪，
本文编号：2184418
[Abstract]:The distribution, transfer and reduction of nitrogen and phosphorus nutrients in Poyang Lake were studied by means of mathematical statistics according to the monitoring data of pollution load, investigation data and synchronous monitoring data of flow field and water quality under different hydrological conditions. The results show that: (1) Total phosphorus and total nitrogen are the main pollutants affecting the water environment quality of Poyang Lake, and the pollution load of the lake is closely related to the runoff water quantity. (2) the water exchange period is short and the water flow changes frequently in Poyang Lake. Nitrogen and phosphorus pollutants will not be fully mixed in the lake area; nitrogen and phosphorus excess waters will gradually move downstream with the flow of water, and the lake water level will be in a state of decline, and the nitrogen and phosphorus concentrations in some parts of the Tongjiang waterway will exceed the standard. (3) the water environment in the lacustrine phase is better than that in the river. In general, large areas of total nitrogen and total phosphorus do not exceed the standard. (4) the water environment of Poyang Lake barely maintains the class 鈪，
本文编号：2184418
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