Under natural conditions, lakes, rivers, and other water bodies undergo Eutrophication, an aging process that slowly fills in the water body with sediment and organic matter.
在自然条件下，湖泊，河流，和其他水体进行水体富营养化，老龄化的进程，慢慢地填满了水体与沉积物和有机物。
The modern sediment is an important storehouse of the nutrient salt and pollutant in lakes. Under proper conditions, these internal contamination load sources can cause the eutrophication of lakes.
现代沉积物是湖泊营养盐和污染物的重要储藏库，在一定条件下，这些内源污染负荷可能成为水体富营养化的主导因子。
In the eutrophication process of Wuli lake, large amount of nitrogen, phosphorous and organic matter accumulated in the sediment of the lake bottom.
在五里湖富营养化过程中，氮、磷及有机物质在湖底沉积物中大量积累。
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