夏季白洋淀沉水植物分布与水环境因子的关系  

Relationship between Distribution of Submerged Macrophyte and Water Environment Factors in Baiyangdian Lake in Summer

作　　者：徐杰[1,2] 何萍[1,2] 王钦[3] 侯利萍[1,4] 贾俊艳[1,4] 

机构地区：[1]中国环境科学研究院,北京100012 [2]国家环境保护区域生态过程与功能评估重点实验室,北京100012 [3]中国环境科学出版社,北京100062 [4]河北师范大学资源与环境科学学院,河北石家庄050024

出　　处：《湿地科学》2013年第4期488-494,共7页Wetland Science

基　　金：水体污染控制与治理科技重大专项项目(2009ZX07209-008)资助

摘　　要：2010年夏季,对白洋淀沉水植物群落和主要环境因子进行了采样调查,并应用典范对应分析法对沉水植物群落组成、分布及其与水体环境因子之间的关系进行了研究。结果表明,共发现沉水植物10种,其中金鱼藻(Ceratophyllum demersum)、篦齿眼子菜(Potamogeton pectinatus)和轮藻(Chara sp.)为优势种;水体透明度、溶解氧含量和总磷含量是影响白洋淀不同沉水植物群落分布的主要环境因子。金鱼藻、篦齿眼子菜等能够适应不利环境因素,广泛存在于水质较差区域;轮藻能耐受低溶解氧,分布也较广;菹草(Potamogeton crispus)是耐污种,是白洋淀冬、春季沉水植物优势种;大茨藻(Najas marina)和小茨藻(Najas Minor)等清洁物种仅少量存在于水质较好区域。Submerged macrophyte and main environmental factors of Baiyangdian Lake were investigated in late August, 2010, and canonical correspondence analysis （CCA） was used to research the relationship be- tween distribution of submerged macrophyte and water environment factors. Ten species of submerged macro- phytes were found and the dominant associations were Ass. Ceratophyllum demersum, Ass. Potamogeton pecti- natus and Ass. Chara sp. Transparency and contents of dissolved oxygen and total phosphorus in the water were primary water environment factors that influencing the distribution of submerged macrophyte in Bai- yangdian Lake. Ceratophyllum demersttm and Potamogeton pectinatus were adaptable to adverse environmental stress and could exist widely in the water with worse water quality. Chara sp. was tolerant to stress of lower content of dissolved oxygen and distributed widely in Baiyangdian Lake. Potamogeton crispus was also adapt- able to worse water quality and dominant in winter and spring. Najas Minor and Najas Marina could not be adaptable to adverse environmental stress and only exist rarely in the clean water.

关 键 词：沉水植物 水环境因子 典范对应分析 白洋淀 

分 类 号：Q945.17[生物学—植物学]