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沉水和浮叶植物在浅水湖泊生态系统中的作用——以太湖为例
引用本文:雷泽湘,徐德兰,王备新,刘雯,刘正文.沉水和浮叶植物在浅水湖泊生态系统中的作用——以太湖为例[J].河南师范大学学报(自然科学版),2010,38(2).
作者姓名:雷泽湘  徐德兰  王备新  刘雯  刘正文
作者单位:1. 仲恺农业工程学院,环境科学与工程学院,广州,510225;暨南大学,水生生物研究所,广州,510632
2. 徐州工程学院,环境工程系,江苏,徐州,221008
3. 南京农业大学,昆虫系,南京,210095
4. 仲恺农业工程学院,环境科学与工程学院,广州,510225
5. 暨南大学,水生生物研究所,广州,510632;中国科学院,南京地理与湖泊研究所,南京210008
基金项目:国家高技术研究发展计划(863计划),广东省自然科学基金 
摘    要:对太湖沉水和浮叶植物、底栖动物及其湖泊水质和沉积物状况等进行了调查.结果表明:沉水和浮叶植物的存在对太湖水质、沉积物特性和底栖动物的多样性均有一定影响.有草区与无草区比较:其水体透明度提高了1.12(5月)和1.99(9月)倍,TN浓度降低了1.84(5月)和0.70(9月)倍,TP浓度降低了0.99(5月)和1.58(9月)倍,叶绿素含量降低了2.17(5月)和1.54(9月)倍,有草区底栖动物的生物多样性(75种)明显高于无草区(53种),方差分析差异达显著(P0.05)或极显著(P0.01).表明沉水和浮叶植物是维持太湖浅水湖泊健康生态系统的重要组成部分,在浅水湖泊中的作用不可替代.

关 键 词:浅水湖泊  沉水和浮叶植物  底栖动物  营养盐  太湖

Function of Submersed and Floating-Leaved Macrophytes in the Shallow Lake Ecological System-A Case Study of Taihu Lake
LEI Ze-xiang,XU De-lan,WAN Bei-xin,LIU Wen,LIU Zheng-wen.Function of Submersed and Floating-Leaved Macrophytes in the Shallow Lake Ecological System-A Case Study of Taihu Lake[J].Journal of Henan Normal University(Natural Science),2010,38(2).
Authors:LEI Ze-xiang  XU De-lan  WAN Bei-xin  LIU Wen  LIU Zheng-wen
Abstract:The submersed and floating-leaved macrophytes,macrozoobenthos,water quality,and sediments in the Taihu Lake have bee investigated. The results show that the existence of submersed and floating-leaved macrophytes have a significant effect on water quality,sediments’ characteristics and the index of biodiversity of the macrozoobenthos. Through the comparison of the area with macrophytes and the area without macrophytes,it is found that water transparency improve 1.12 (May) and 1.99 (Sept.) times,TN reduce 1.84 (May) and 0.70 (Sept.) times,TP reduce 0.99 (May) and 1.58 (Sept.) times,the content of chlorophyll reduce 2.17 (May) and 1.54 (Sept.) times; the biodiversity of macrozoobenthos (75 species) in the area with macrophytes is higher than that in the area without macrophytes (53 species). The Analysis of Variance shows that the difference reached significant level (P<0.05) or extremely significant level (P<0.01). The research reveals that Taihu Lake’s submersed and floating-leaved macrophytes is an important part to maintain the healthy shallow lake ecological system.
Keywords:shallow lake  submersed and floating-leaved macrophytes  macrozoobenthos  nutrients  Taihu Lake
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