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引用本文:金相灿,颜昌宙,许秋瑾.太湖北岸湖滨带观测场水生植物群落特征及其影响因素分析.湖泊科学,2007,19(2):151-157. DOI:10.18307/2007.0207
JIN Xiangcan,YAN Changzhou,XU Qiujin.The community features of aquatic plants and its influence factors of lakeside zone in the north of Lake Taihu. J. Lake Sci.2007,19(2):151-157. DOI:10.18307/2007.0207
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太湖北岸湖滨带观测场水生植物群落特征及其影响因素分析
金相灿, 颜昌宙, 许秋瑾
中国环境科学研究院湖泊生态环境创新基地国家环境保护湖泊污染控制重点实验室, 北京100012
摘要:
对太湖北岸贡湖和梅梁湾湖滨带(水-陆交错区)观测场中的主要水生植物群落的种类组成、生物量进行了测定,定量分析了其生长型和群落特征的季节变化,比较分析了上述两个湖滨带观测场的水质变化情况,并且在此基础上进一步探讨了影响湖滨带沉水植物生长的关键因素.结果表明:(1)贡湖观测场的荇菜(Nymphoides peltatum)+马来眼子菜(Potamogeton malaianus)群落由3种浮叶植物和3种沉水植物构成,共5种水生植物生长型.而梅梁湾观测场的菹草群落为单优群落,只有一种沉水植物菹草(Potamogeton crispus),其生长型为大眼子菜型.以上两个湖滨带观测场水生植物群落特征与人为活动的干扰(如水质污染、人工堤岸建设等)密切相关;(2)以上两湖湾的主要污染指标为氮、磷营养物,均已达到富营养水平,但贡湖观测场的水质(除透明度外)明显好于梅梁湾观测场;(3)透明度、水深和风浪可能是影响贡湖和梅梁湾湖滨带沉水植物种群数量、分布和格局的重要因素.
关键词:  湖滨带  生物量  周年动态  群落结构  太湖
DOI:10.18307/2007.0207
分类号:
基金项目:国家重点基础研究规划项目“湖泊富营养化过程与蓝藻水华爆发机理研究”(2002CB412307)
The community features of aquatic plants and its influence factors of lakeside zone in the north of Lake Taihu
JIN Xiangcan, YAN Changzhou, XU Qiujin
State Environmental Protection Key Lab for Lake Pollution Control, Research Center of Lake Eco-environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, P.R.China
Abstract:
The species composition and the blomass of two dominant aquatic plant communities were measured and the growth form spectrum and the seasonal changes of the community in the lakeside zone (water-land ecotone) in the north of Lake Taihu were quantificationally analyzed. Monthly changes of water qualities in two regions studied were also compared and analyzed, and the key factors for submerged macrophytes growth in the lakeside zone were made further discussion. The results showed :( 1 ) The N. peltatum+P. malaianus community in the studied lakeside zone of Gonghu Bay was composed of three floating leaves plants and three submerged plants, with five growth forms in the community. However, there was only one submerged plant in the studied lakeside zone of Meiliang Bay, and its growth form was Magnopotamid. The community feature of aquatic plants in the two lakeside zone mentioned above was closely related to the disturbance from human being, for example, water pollution and dikes building;(2) The water quality of the two lakeside zone was eutrophic, and both of nitrogen and phosphorus exceeded the eutrophic standard. Besides SD ( transparency), the water quality of the studied lakeside zone in Gonghu Bay was better than that in Meiliang Bay ;(3) That the sechi depth, lake depth and stormy waves may be the key factors which affect the quantity, distribution and pattern of the aquatic plant species in the lakeside zone in Gonghu Bay and Meiliang Bay.
Key words:  Lakeside zone  aquatic plants  community features  Lake Taihu
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