辽东湾近岸冰区生态环境初步调查研究

Preliminary investigation on the ecological environmental condition of the coastal sea ice zone in Liaodong Bay

１９９６年１月２６～３１日，在辽东湾近岸冰区选设４个站位进行了一次内容较为全面的生态环境调查研究，其项目包括温度、盐度、ｐＨ、ＤＯ、ＣＯＤ、ＴＯＣ、ＰＯＣ、营养盐、微生物、叶绿素、浮游植物、浮游动物和底栖动物。结果表明，辽东湾近岸冰区营养盐含量丰富，叶绿素ａ含量较低，存在一定数量的浮游生物。海水中硝酸盐、铵盐和磷酸盐含量均为冰中含量的１．５倍左右，海水中硅酸盐含量是冰中的４．１６倍，亚硝酸盐和叶绿素ａ含量在海水中和海冰中的分布相差不大，共鉴定７种浮游植物和７种浮游动物。本文还将辽东湾近岸冰区生态环境与南极近岸生态环境进行了初步对比。

Physical and chemical factors,chlorophyll in the sea ice and water column were measured at four sites in the coastal sea ice zone in Liaodong Bay from Jan.26 to 31,1996,meanwhile,microorganism,phytoplankton,zooplankton and benthos were also investigated.The results indicated that rich nutrients,low chlorophyll existed both in the sea ice and water column.The concentrations of nitrate,ammonium and phosphate in the water column were about 1.5 times as high as in the sea ice,the concentration of silicate in the water column was 4.16 times as high as in the sea ice,the concentrations of nitrite and chlorophyll a were almost same as in the sea ice.An identification of 7 species of the phytoplankton and 7 species of the zooplankton in the water column has been made.In comparision with the coastal zone of the Antarctica,the ecological environmental conditions of the coastal sea ice zone in Liaodong Bay were discussed in this paper.