摘要
2001年8月和2001年12月对象山港8个站进行了大型底栖动物两个航次的调查取样。发现4大类底栖动物43种,其中多毛类12种(占28%)、软体动物16种(占37%)、甲壳动物6种(占14%)、棘皮动物5种(占12%)。优势种为不倒翁虫(Sternaspis scutata Ranzani)、西格织纹螺(Nassarius siquijorensis A.Adams)和滩栖阳遂足(Amphiura vadicola Matsumoto)。研究海域底栖生物多样性指数偏低、均匀度小、群落结构不稳定。象山港陆源排污量逐年增大、海水养殖规模扩大、养殖密度增加是导致生物多样性降低的可能原因。整个象山港年平均次级生产力P为4.32 g(AFDW)/(m2?a);港口最低,为0.99 g(AFDW)/(m2?a);港底最高,为7.02 g(AFDW)/(m2?a);象山港中部介于港口和港底之间。象山港大型底栖动物年平均P/B为2。
Two surveys of macro-benthos on Xiangshan Bay were carried out on August and December 2001. There are 43 species mainly belonging to 4 groups in total 8 monitoring points, including 12 species of polychaetes （28%） , 16 species of mollusks （37%）, 6 species of Crustacea （ 14% ）, 5 species of Echinodermata （ 12% ）. The dominant species include Sternaspis scutata Ranzani, Nassarius siquijorensis A. Adams and Amphiura vadicola Matsumoto. The Shannon-Wiener and Pielou index of biodiversity is low and community structure of macro-benthos is not stable which may be caused by more and more pollution, scale enlarging and density increase of marine aquaculture. The average secondary productivity of Xiangshan Bay is 4.32 g （AFDW）/ （m^2·a）, the lowest value is 0.99 g （AFDW）/ （m^2·a） in the mouth of the bay and the highest value is 7.02 g （AFDW） / （m^2·a） in the bottom of the Bay. The average PIB ratio of macro benthos is 2 in Xiangshan bay.
出处
《天津农学院学报》
CAS
2006年第2期24-28,共5页
Journal of Tianjin Agricultural University
基金
国家海洋局近岸海域生态环境重点实验室开放基金项目"近岸海域水体的生态遗传毒理学研究"(200434)
