作　　者： ; ; ;

机构地区： 中国海洋大学环境科学与工程学院

出　　处： 《中山大学学报（自然科学版）》 2006年第2期88-91,共4页

摘　　要： 2003年5-6月份期间大亚湾临时海洋倾倒区接纳了约50万m3的疏浚泥。倾倒过程中,水体分层被扰乱,海水中悬浮物的含量增加,同时,疏浚泥中部分污染物的溶出对海水水质也产生了一定的影响;倾倒活动改变了浮游植物的水环境,使浮游植物的种数减少,多样性和均匀度降低。倾倒活动结束后一个月内,海区水质状况和浮游植物的情况基本得到恢复。疏浚泥倾倒对海区沉积物环境的影响则由疏浚泥本身的物理化学性质决定。 The temporary dumping ground of Daya Bay took up 5 × 10^5 m^3 dredged sediments between May and June, 2003. The water body delamination was disturbed and suspended sediment level in seawater went up during the dumping operation. At the same time, the partial pollutants dissolved from the dredged sediment had some effect on the seawater quality. The disposal activity changed the seawater environment on which phytoplankton lived, decreased the phytoplankton species numbers, bio-diversity and evenness. The seawater quality and phytoplankton status recovered basically in a month after the disposal activity was over. The impact from dumping dredged materials on sedimentary ambient depended on the physical and chemical property of the dredged materials.

关 键 词： 倾倒区 疏浚泥 水质 沉积物

领　　域： [环境科学与工程]