滴滴涕对太湖经济鱼类危害的生态风险

生态学杂志

滴滴涕对太湖经济鱼类危害的生态风险

赵肖¹;张娅兰²;李适宇¹

中山大学环境科学与工程学院，广州 510275

收稿日期:2007-04-16 修回日期:1900-01-01 出版日期:2008-02-10 发布日期:2008-02-10

Ecological risk of DDT accumulation in economic fishes in Taihu Lake.

ZHAO Xiao¹; ZHANG Ya-lan²; LI Shi-yu¹

School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China

Received:2007-04-16 Revised:1900-01-01 Online:2008-02-10 Published:2008-02-10

摘要/Abstract

摘要： 选取滴滴涕（dichloro-diphenyl-trichloro-ethane, DDT）作为太湖持久性有机氯污染的代表性污染物，以大银鱼、陈氏短吻银鱼和刀鲚为研究对象，建立太湖主要经济鱼类食物网模型，并结合DDT的生物化学特性以及蒙特卡罗(Monte Carlo)不确定性分析方法，应用食物网模型研究DDT在食物网主要经济鱼类中的迁移分布特性，分析由此导致的生态风险。结果表明：大银鱼DDT累积量为0～0.329 mg·kg^-1，平均值为0.039 mg·kg^-1；陈氏短吻银鱼DDT累积量为0~0.188 mg·kg^-1，平均值为0.022 mg·kg^-1；刀鲚DDT累积量为0～0.575 mg·kg^-1，平均值为0.067 mg·kg^-1；以脂溶性为代表的污染物累积性质是太湖经济鱼类富集DDT的主要控制因素；生态风险总体状况为：刀鲚>大银鱼>陈氏短吻银鱼。

Abstract: DDT is a representative of persistent organochlorine pollutants. With Protosalanx hyalocranius, Coilia nasus and Salangichthys tangkahkeii as test objects, a food web model of main economic fishes in Taihu Lake was established, with which, the distribution characteristics of DDT in the benthos, zooplankton and fishes of the food web were studied by Monte Carlo simulation method, and onehit model was used to approach the ecological risk of the DDT distribution. The results showed that the accumulation amount of DDT in P. hyalocranius, C. nasus and S. tangkahkeiiwas 0-0.329 (averaging 0.039) mg·kg^-1, 0-0.188 (averaging 0.022) mg·kg^-1 and 0-0.575 (averaging 0.067) mg·kg^-1, respectively, and the accumulation character of liposoluble contaminants was the main factor controlling the DDT distribution in economic fishes in Taihu Lake. The overall status of the ecological risk of DDT accumulation in test fishes was the highest for S. tangkahkeii, followed by P. hyalocranius, and C. nasus.

Key words: Taxus chinensis var. mairei, Life table, Survival curve, Spectral analysis

赵肖;张娅兰;李适宇 . 滴滴涕对太湖经济鱼类危害的生态风险[J]. 生态学杂志.

ZHAO Xiao¹; ZHANG Ya-lan²; LI Shi-yu¹ . Ecological risk of DDT accumulation in economic fishes in Taihu Lake. [J]. cje.