【摘要】 东平湖作为国家南水北调东线工程的调蓄湖泊,在国家水资源配置战略中起着重要的作用。2016年对东平湖沉水植物分布和主要环境因子进行了采样调查,并应用冗余分析对沉水植物分布格局及其与水体环境因子之间的关系进行了研究。结果表明,东平湖现有2种沉水植物,其中菹草是东平湖沉水植物中绝对优势种,其分布几乎遍及全湖,狐尾藻仅个别点位存在,沉水植物群落结构呈现明显的单一化趋势。Monte Carlo测试检验的结果表明,底泥总磷、硝氮和水深与沉水植物分布的相关性极显著,其他环境因子影响不显著。实验结果为进一步探讨沉水植物在湖泊生态系统中的作用有一定的借鉴作用。更多还原

【Abstract】 As a diversion lake in the eastern line of the south-to-north water transfer project, Dongping Lake plays an important role in the national water allocation strategy. Based on the investigation of submerged plants and its relational environmental factors of Dongping Lake in 2016, this paper analyzed the characteristics of submerged plants distribution, and discussed the relationship between submerged plants and environmental factors with redundancy analysis. The results showed that there were two submerged plant species in Dongping Lake. Potamogeton crispus was the dominant species, which occupied all over the lake. Myriophyllum spicatum appeared rarely only in a few sampling points. The structure of submerged plant community showed obvious unitization trend. Monte Carlo test results showed that the correlation between total phosphorus, nitrate nitrogen of sediment, depth of water and the distribution of submerged plant was significant, however, other environmental factors had no significant effect. These results have reference function for the more exploring of submerged plants in lake ecosystem.更多还原