摘要
分析了洋山工程群可能对近海生态环境产生的影响。结果表明,就目前而言,洋山工程群对近海生态环境的影响主要表现在施工期。主要的影响有大堤修筑、码头和桥桩钻孔、航道疏浚、炸礁清石、爆破挤淤、海底管道铺设和陆域吹填等作业,并由此产生的水下振动、冲击波、高浓度悬浮物、石油烃、有机物和生物填埋等因子。高浓度悬浮物直接或间接地影响浮游生物、鱼卵、仔稚鱼和游泳动物幼体等生长;冲击波直接引起一定范围内鱼类的死亡;水下振动对鱼群有驱赶作用;石油烃和有机物污染水体;填埋导致底栖动物死亡。洋山工程群建设和营运过程中污水排放量较少,有机污染物对海洋环境影响有限。悬浮物和生物填埋是工程影响海洋生态环境的关键因子。施工期结束,洋山海域生态环境可能较快地得以恢复。
The direct and indirect impacts of Yangshan Gigantic Project were analyzed.The results showed that the Yanshan Project had a negative impact during the constructive period.The engineering that related to the environment problems were included the sea embankment construction,port construction,drilling boreholes for bridge piles,waterway dredging,reef explosion,blasting toe-shooting,laying of sub-sea pipeline,hydraulic fill,and other engineering processes.Therefore,it was formed underwater vibration and shock,quantities of suspended sediments,petroleum hydrocarbon and organic compound.Even some marine organisms have been buried in the process.The suspended sediments and turbidity levels from dredging and disposal operations may effect on the marine animals and plants under certain conditions,because of reducing light into water column.Underwater the shock is thought to be detrimental to the near-field fishes and the vibration influences the behavior of school of fishes.In addition,burying directly kill the zoobenthos.However,the small amount discharge of petroleum hydrocarbon and organic compound might not harm to the environment during the constructive and running periods.In short,suspended sediments and burying are two most important factors influenced the marine environment in the process of Yangshan Project.The marine ecosystems adjacent to the Yangshan Project are likely to recover after the project.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2010年第5期617-622,635,共7页
Marine Environmental Science
基金
上海市908专项(PJ1-1)
关键词
杭州湾
洋山工程
生态环境
影响分析
Hangzhou Bay
Yangshan Project
marine environment
factorial analysis
