The hydrophytes can purify water body.
水生植被具有净化水体的作用。
Rooted hydrophytes, both emergent and submergent, are found in this zone.
该区域分布有有根的水生植物，包括浮游植物和沉水植物。
The ratio of nitrogen to phosphorus in the sediments indicates that the lake is in the state of eutrophication, and the organic roots possibly in the hydrophytes.
沉积物中氮磷比值表明湖水处于富营养化状态，有机物主要来源于水生植物。
The ratio of nitrogen to phosphorus in the sediments indicates that the lake is in the state of eutrophication, and the organic roots possibly in the hydrophytes.
沉积物中氮磷比值表明湖水处于富营养化状态，有机物主要来源于水生植物。
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