At the same time, from the process of weight coefficient calculation, it can be seen that TP, TN's weight coefficient is larger, the degree of water eutrophication is greatly influenced by nitrogen and phosphorus nutrient salts, TN/TP is greater than 15, phosphorus can be considered to be the main restrictive factor. Therefore, reducing the input of nitrogen and phosphorus and other nutrients from the source, rationally regulating the hydrodynamic conditions of local waters, improving the control ability of the water body itself, strengthening supervision and preventing the impact of sudden water pollution events on the water body, will be conducive to improving the eutrophicstate state of water bodies and promoting the water environment safety in the basin.
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