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戴全裕, 张玉书, 高礼存, 庄大栋. 苏州地区不同营养类型湖泊经济鱼体中金属元素含量水平的探讨[J]. 水生生物学报, 1990, 14(2): 97-107.
引用本文: 戴全裕, 张玉书, 高礼存, 庄大栋. 苏州地区不同营养类型湖泊经济鱼体中金属元素含量水平的探讨[J]. 水生生物学报, 1990, 14(2): 97-107.
Dai Quanyu, Zhang Yushu, Gao Licun, Zhuang Dadong. METAL ELEMENT CONTENTS IN COMMERCIAL FRESHWATER FISHES FROM LAKES OF DIFFERENT TROPHIC TYPES IN SUZHOU REGION[J]. ACTA HYDROBIOLOGICA SINICA, 1990, 14(2): 97-107.
Citation: Dai Quanyu, Zhang Yushu, Gao Licun, Zhuang Dadong. METAL ELEMENT CONTENTS IN COMMERCIAL FRESHWATER FISHES FROM LAKES OF DIFFERENT TROPHIC TYPES IN SUZHOU REGION[J]. ACTA HYDROBIOLOGICA SINICA, 1990, 14(2): 97-107.

苏州地区不同营养类型湖泊经济鱼体中金属元素含量水平的探讨

METAL ELEMENT CONTENTS IN COMMERCIAL FRESHWATER FISHES FROM LAKES OF DIFFERENT TROPHIC TYPES IN SUZHOU REGION

  • 摘要: 1984—1985年,对苏州地区不同营养类型湖泊9种经济鱼类中26种金属元素含量进行了测定和分析。①在湖泊中污染区的鱼体金属元素含量要比非污染区高。②鱼对金属元素的吸收、富集规律是:底层鱼中层鱼上层鱼;食物链长的鱼食物链短的鱼(即肉食性鱼杂食性鱼草食性鱼);鱼鳃鱼肉。③在相同的环境条件和生长状况下,鱼体中金属元素含量具有相对的稳定性;鱼在污染性湖泊中具有区域性分布的特点,因而鱼也是污染物的指示者之一。④苏州地区湖泊鱼体中金属元素的自然含量不太高,与苏联里海地区的鱼类相近似;它们在鱼体内的排列次序为:铁锌锶铜铅钡锂铌镓镍铈钛锰钍钴铬砷汞镉钒锆钇镧铍≥镱钼。

     

    Abstract: Contents of 26 metal elements were determined for the commercial fishes from takes in Suzhou region. The results are as follows: 1) Magnitudes of contents of metal elements are in the order: benthic fishesmid-waterfishesupper-layer fishes, Fishes at higher levels in the food chain have higher contents than those at lower levels (i.e. carnivorous fishes omnivorous fishesherbivorous fishes). Contents in fish gills are higher than in the flesh. 2) The contents of metal elements are relatively stable in fishes from the same environment. There is a regional distribution of metal contents in fishes from polluted lakes. 3) The contents of metal elements in the freshwater fishes from the lakes in Suzhou region are not very high and are comparable to those in fishes from the Caspian Sea, U.S.S.R. The magnitudes of metal contents in fishes from Suzhou region are in the order:FeZnSrCuPbBaLiNbGaNiCeTiMnThCoCrAsHgCdVZrYLaBe≥YbMo.

     

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