海洋倾倒区对附近海域环境影响分析——以嵊泗上川山为例  

Analysis of the Impact of Dumping Site on the Environment in the nearby Sea Area:a case study of Shengsi Shangchuanshan Sea

作　　者：朱志清[1] 叶林安 章紫宁 袁国坚 ZHU Zhiqing;YE Linan;ZHANG Zining;YUAN Guojian(Marine Environmental Monitoring Center Station of Ningbo,SOA,Ningbo 315012,China)

机构地区：[1]国家海洋局宁波海洋环境监测中心站,宁波315012

出　　处：《海洋开发与管理》2020年第5期52-56,共5页Ocean Development and Management

基　　金：自然资源部东海局青年海洋科学基金(201803);国家重点研发计划项目(2016YFC1402405).

摘　　要：文章根据2016—2017年3个航次的嵊泗上川山疏浚物海洋倾倒区跟踪监测资料,分析了倾倒活动对该海域的水下地形、水质、沉积物、生物的影响情况。结果表明:倾倒区局部区域出现一定的淤积态势,平均淤积厚度为0.13 m;疏浚物倾倒过程中,海水中的悬浮物、无机氮和磷酸盐含量明显增加,沉积物中的硫化物和镉有所增加;倾倒结束后水质、沉积物和生物都恢复至倾倒前水平。长期来看,受倾倒活动影响较大的是底栖生物,其生物量和栖息密度较本底值都明显降低。Based on the three cruises'investigation data obtained from Shengsi Shangchuanshan Dumping Site from 2016 to 2017,this paper assessed the impact of underwater landform,water quality,sediment quality,and marine biology.The result showed that,part of the dumping site was silt,and the average silt thickness was 0.13m.Along with the dredged materials dumping,the suspended silt,inorganic nitrogen and phosphate content in seawater increased obviously,while the sulfide and cadmium content in sediment increased a certain extent.All the content of water quality,sediment quality,and marine biology resumed the level ahead the dredged materials dumping.For long term,both the biomass and density of marine benthos decreased obviously compared the background quantity.

关 键 词：嵊泗 上川山 倾倒区 海水水质 生态环境 

分 类 号：P76[天文地球—海洋科学] X834[环境科学与工程—环境工程]