舟山渔场人工鱼礁投放海域生态环境前期评估

Previous assessment of ecological environment in the Zhoushan Fishing Ground being put the artificial reef into

根据2002年6-7月在舟山渔场朱家尖外侧开展人工鱼礁投放海域本底调查所获的海洋生物和海洋水文环境资料及以往有关文献中对该海域的调查资料,对朱家尖外侧拟投人工鱼礁海域的海水理化因子和海洋生物种类组成、数量分布和群落结构特征作了较详细的分析研究,以评估该海域是否适于投放人工鱼礁。结果得知:该海域底质为粉砂质粘土,浮游生物种类和数量及底栖生物种类和数量较多,水深为14～19m,温、盐度季节变化明显、透明度较高、水色相对较清,水质绝大多数指标符合国家一、二类水质标准,海域适合沿岸岛礁性鱼类如石斑鱼、褐菖、鲈鱼等的栖息生长,历史上渔业资源丰富,也无工厂废水排放,不会对海洋生态环境产生重大污染,因此,可以为良好的投放人工礁之场所。

Based on the relevant literature and findings date of marine living things and marine hydrological environment in the water out of Zhujiajian, Zhoushan Fishing Ground where the artificial reef put into from June to July in 2002, detailed analysis and research have been carried out on marine physics and chemistry factors, marine biological varieties, quantitative distribution, community structure features in the waters out of Zhujiajian to assess whether this area would fit for artificial reef or not. The conclusion shows the waters out of Zhujiajian is at the waters where Changjiang, Qiantangjiang, Yongjiang join ocean. Plenty runoff makes the water fertile, biological baits rich, water turbidity low and transparence high. The depth of water is 14-19m, the bottom type is powder and grit clay, the kinds and quantities of plankton and benthon are many, the variations of temperature and salinity is clear as the seasons change. Most indexes of the water are up to the government standards of the First and Second water. The water is fit for the coastal reef fish such as Epinephelus drummondhayi, Sebastiscus marmoratus, Lateolabrax japonicus to live. The fishery resource was rich in the history, with no emission of wasted water, and did not make heavy pollution. So this area is the good water to put into artificial reef.