大连大孤山海区水下爆破对海洋环境及浮游生物的影响

The impacts of underwater explosion on aquatic environment and plankton in coastal Dagushan in Dalian,Liaoning province

为了解大连湾大孤山海区水下爆破活动对其所在海区水质及浮游生物的影响,于2007年的9—12月对爆破后2 h和1 000 m范围内的爆破区域进行了监测,内容包括透明度、盐度、溶氧、pH、悬浮物、油、氨态氮、硝酸氮、亚硝酸氮、活性磷10项水质指标和叶绿素a、浮游植物生物量、浮游动物生物量3个生物指标。结果表明:爆破对海区透明度和悬浮物的影响显著,对其它指标影响不显著。整体上,本次爆破不会对该海区水质及浮游生物量产生明显的影响。

The impacts of underwater explosion on water quality including 10 indexes（Secchi disk,salinity,dissolved oxygen,pH,suspended matter,petroleum,ammonia,nitrate,nitrite,and available phosphorus） and plankton including 3 indexes（Chl a,phytoplankton biomass,and zooplankton biomass） were monitored within 1000 meters and 2 h of the explosion at coastal Dagushan area in Dalian bay from September to December in 2007.The results showed that there were significant impact of explosion on transparency and suspended matter,while there were no significant impact of explosion on the other indexes.Overall,it was not found that there was obviously impact of the explosion on the water quality and the biomass of plankton at coastal Dagushan area.