The sediment dredging had significant impact on mollusca.
底泥疏浚对螺、蚌等软体动物干扰较大。
The sediment dredging was conducted for decreasing the pollution load and controlling the eutrophication in Xuanwu Lake in 1998.
南京玄武湖 1998年初实施了清淤疏浚工程 ，试图以此削减湖泊内源污染负荷 ，控制富营养化 。
Besides the extension length of sedimentation, the factors that effected the river course are channel pattern, process of water and sediment and dredging.
影响河口河道好坏的因素，除淤积延伸长度外，还应包括河槽形态、水沙过程、河口疏浚等。
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