河流生态系统 river ecosystem ; river ecological system ; riverine ecosystem
河流生态学 river ecology
河流生态系统健康 Urban River Ecosystem Health ; River Ecosystem Health
河流生态系统服务功能 river ecosystem service function
化肥和粪肥都释放氮到自然生态系统，如河流，从而破坏自然的平衡。
Both fertilizers and manure release nitrogen into natural systems such as rivers, upsetting the natural balance.
塞文河口是鸟类的栖息地，而大型水坝会在很大程度上破坏或毁坏河口，这同样也会破坏河流中鱼群的生态环境。
The Severn estuary is an important habitat for birds; large barrages would destroy or damage much of it, as well as interfere with fish stocks in the river.
水污染同样有害，海洋的整个生态平衡正在受到破坏，工业废水已使许多河流的生物死亡。
The pollution of water is equally harmful. The whole ecological balance of the sea is being changed and industrial wastes have already made many rivers lifeless.
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