厦门筼筜湖游泳生物种类组成和资源状况  

Species composition of necton and resources state of Yun-dang lake in Xiamen

作　　者：戴泉水[1] 卢振彬[1] 蔡清海[1] 

机构地区：[1]福建省水产研究所,厦门361012

出　　处：《海洋水产研究》2005年第1期49-55,共7页Marine Fisheries Research

基　　金：厦门市环保局项目资助

摘　　要：1992～1993年和2001～2002年,分别对筼筜湖的游泳生物进行了4季度月的调查.结果表明,筼筜湖游泳生物种类数由1992～1993年的43种,恢复到2001～2002年的60种,增加17种.其中鱼类增加6种,蟹类增加9种,头足类出现两种.并且采集到了两种贝类和1种海兔.刺网平均单位面积渔获量由1992年的0.450 9 g/m2·h,增加到0.529 8 g/m2·h,提高17.50%,单位面积渔获尾数由1992～1993年的0.008 3 ind/m2·h, 增加到0.0145 5 ind/m2·h,提高75.30%.游泳生物种类的增加和群落结构的变化以及相对生物量指数和相对生物密度指数的明显恢复,表明筼筜湖经过1993年以来的进一步综合治理,生态环境的改善是显著的.An investigation on necton of Yun-dang lake was carried out in Jul. and Oct., 2001 and in Jan. and Apr., 2002. The results showed that the species increased from 43 in 1992 to 60, among 17 species increased, 6 of fish, 9 of crab and 2 of cephalopod. 2 species of shellfish and 1 species of sea-hare were also collected. Unit catch of gill net in the lake increased from 0.450 9 g/m 2·h in 1992～1993 to 0.529 8 g/m 2·h, up 17.50%. Unit catch in number increased from 0.008 3 ind/m 2·h in 1992～1993 to 0.0145 5 ind/m 2·h, up 75.30%. The increase in species, variation in community structure and obvious recovery in relative biomass index and relative biotic density index of necton indicated that ecological environment of Yun-dang lake had been improved greatly by further comprehensive control and management since 1993.

关 键 词：游泳生物 种类 相对生物量指数 相对生物密度指数 厦门筼筜湖 

分 类 号：S931[农业科学—渔业资源]