摘要
2016年对高邮湖沉水植物分布进行了采样调查,并应用冗余分析法对沉水植物分布格局及其与主要环境因子的关系进行了研究。结果表明,高邮湖现有沉水植物种类分布稀少,其中春夏季菹草(Potamogetoncrispus)是高邮湖沉水植物中绝对优势种,其分布几乎遍及全湖,穗状狐尾藻(Myriophyllum spicatum)和篦齿眼子菜(Potamogeton pectinatus)仅在个别点位少量分布。不同季节湖泊氮含量均可维持在Ⅲ类水标准,而磷含量严重超标。相关分析发现,沉水植物分布和透明度呈正相关,与总磷、氨氮浓度显著负相关。MonteCarlo检验结果表明,总磷和透明度是影响高邮湖沉水植物分布的主要环境因子。实验结果为进一步探讨高邮湖沉水植物资源的利用和保护提供依据。
Gaoyou Lake is the sixth largest freshwater lake in China,it is located between Anhui Province and Jiangsu Province.It has been located in the eastern part of the South-to-North Water Diversion Project,playing an important role in the national water allocation strategy.Base on the investigation performed on the distribution of submerged plants in Gaoyou Lake in 2016,this paper analyzed the characteristics of distribution of submerged plants,and presented a relationship between submerged plants and key environmental factors with redundancy analysis.The results showed that there were few submerged plants in Gaoyou Lake.In addition,it was revealed that Potamogeton crispus was a dominant species and prevalent in the whole lake in late spring and summer seasons,which occupied all over the lake.Myriophyllum spicatum and Potamogeton pectinatus were only visible in few sampling points as well.Nitrogen(N)content of Gaoyou Lake maintained atⅢlevel in different seasons,whereas phosphorus severely exceeded the limit.The correlation analysis revealed that the distribution of submerged plants was positively correlated with water transparency,while negatively correlated with total phosphorus(P)and ammonium.Results of Monte Carlo analysis also showed that both the total phosphorus and water transparency were the main environmental factors playing key roles in the distribution of submerged plants in Lake Gaoyou.These results have provided a strong basis for utilization and protection of submerged plant resources in Gaoyou Lake.
作者
田翠翠
郭传波
吴幸强
TIAN Cui-Cui;GUO Chuan-Bo;WU Xing-Qiang(Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China)
出处
《水生生物学报》
CAS
CSCD
北大核心
2019年第2期423-430,共8页
Acta Hydrobiologica Sinica
基金
国家自然科学基金(31670465)
特色研究所项目3(南水北调东线湖群的生态风险与对策研究)资助~~
关键词
沉水植物
分布格局
氮
磷
透明度
高邮湖
Submerged plants
Distribution
Nitrogen
Phosphorous
Water transparency
Lake Gaoyou
