连云港疏浚工程对底栖动物影响的调查研究

An Investigation into Effect of Dredging on Macrobenthic Fauna in the Lianyun Harbor

由于港口扩建工程,连云港地区每年有数百万立方米的泥土集中排抛于局部海域。废弃土在排抛区内形成淤积并影响着底栖动物的栖息环境。作者于1986年和1988年在连云港海域进行了底栖动物采样,调查得出了生物量和栖息密度的分布概况。结果表明:疏浚工程影响着底栖动物的生存,但其影响范围是局部的。

Owing to the engineering of harbor development, there are millions of tons of dredged soil discharged annually in the confined Lianyun coastal area. The dredged soil accumulates in the disposal area and thus affects the habitat of macrobenthic fauna. In 1986 and 1988 the authors sampled macrofauna benthos and investigated the distribution of biomass and density. The result indicates that benthos is affected by dredging activity but the extent of the impact is limited.