生物浮岛对三峡库区典型支流库湾水质和浮游藻类的影响

生态与农村环境学报 ›› 2013, Vol. 29 ›› Issue (3): 278-283.doi:

• 流域生态保护与水污染控制研究专题 • 上一篇下一篇

生物浮岛对三峡库区典型支流库湾水质和浮游藻类的影响

郑杨忠,李钢,杜江,彭成荣,刘剑彤

中国科学院水生生物研究所

收稿日期:2012-12-07 修回日期:2013-05-08 出版日期:2013-05-25 发布日期:2013-06-07
通讯作者: 刘剑彤中国科学院水生生物研究所 E-mail:jtliu@ihb.ac.cn
作者简介:郑杨忠（1987-），男，湖北石首人，硕士生，主要从事化学生态学研究。E-mail:zyz.ihb@gamial.com.cn
基金资助:
封闭式小型重污染湖泊水质改善技术研究及示范工程(Y249031401)

Effect of Biological Floating Island on Water Quality and Algae in a Tributary Bay Typical of the Three-Gorge Reservoir

ZHENG Yang-Zhong, LI Gang, DU Jiang, PENG Cheng-Rong, LIU Jian-Tong

Institute of Hydrobiology,Chinese Academy of Sciences

Received:2012-12-07 Revised:2013-05-08 Online:2013-05-25 Published:2013-06-07
Contact: LIU Jian-Tong Institute of Hydrobiology,Chinese Academy of Sciences E-mail:jtliu@ihb.ac.cn

摘要/Abstract

摘要： 在三峡库区香溪河的支流高岚河库湾修建生物浮岛，研究生物浮岛对三峡库区典型支流库湾水质和浮游藻类的影响。结果表明，高岚河水质处于中营养型-轻度富营养型水平。8月藻类大量生长期间，浮岛区水体Ch-la、DO、COD_Mn含量低于对照区，NH₄⁺-N含量高于对照区。浮岛植物对TN负荷的去除效果由高到低依次为美人蕉（Canna indica）、风车草Cyperus alternifolius ）、菖蒲（Pontederia cordata）和梭鱼草（Acorus calamus），对TP负荷的去除效果由高到低依次为美人蕉、风车草、梭鱼草和菖蒲。在浮岛区和对照区共发现藻类7门31属，4月以绿藻和硅藻为主，8月以蓝藻为主。浮岛区和对照区藻类种群结构无明显差异，但4和8月浮岛区藻类生物量明显低于对照区。

关键词: 生物浮岛, 浮游藻类, 氮, 磷, 三峡库区

Abstract: A biological floating island was built in the estuary bay of the Gaolan River, which is a tributary of the Xiangxi River in the Three-Gorge Reservoir region. Samples were collected from several sites around the island for monitoring of changes in physico-chemical parameters and phytoplankton. Results show that the water is moderately to lightly eutrophied, with algae blooming in August. The water around the island is lower than the water in CK in content of Chl-a, DO and COD_Mn, but higher in NH₄⁺-N. The plants on the floating island follow an order of Canna indica > Cyperus alternifolius > Pontederia cordata > Acorus calamus Linn, in TN removal rate, and an order of Canna indica > Cyperus alternifolius > Acorus calamus Linn > Pontederia cordata in TP removal rate. In the island area and CK, a total of 31 genera of algae, belonging to 7 phyla were identified. Chlorophyta and Bacillariophyta dominated in April while Cyanophyta did in August. No significant difference was found between the island area and CK in algal community structure. The density of algae in the floating island area is significantly different（P＜0.05）from that in the control area in April and August, with the former significantly lower than the latter.

Key words: biological floating island, phytoplankton, nitrogen, phosphorus, the Three-Gorge Reservoir

中图分类号:

X524

郑杨忠, 李钢, 杜江, 彭成荣, 刘剑彤. 生物浮岛对三峡库区典型支流库湾水质和浮游藻类的影响[J]. 生态与农村环境学报, 2013, 29(3): 278-283.

ZHENG Yang-Zhong, LI Gang, DU Jiang, PENG Cheng-Rong, LIU Jian-Tong. Effect of Biological Floating Island on Water Quality and Algae in a Tributary Bay Typical of the Three-Gorge Reservoir[J]. Journal of Ecology and Rural Environment, 2013, 29(3): 278-283.

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生物浮岛对三峡库区典型支流库湾水质和浮游藻类的影响

Effect of Biological Floating Island on Water Quality and Algae in a Tributary Bay Typical of the Three-Gorge Reservoir

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