摘要
为探究洱海湖滨区环境因子与蜻蜓物种多样性之间的关系,2014年5月至2017年5月对洱海10个样点进行实地调查,记录植物20科46种,共采集蜻蜓11科22属28种1448个体,并对环境因子与蜻蜓多样性进行相关性分析.结果表明蜻蜓成虫多样性与植被丰富度、湿生植被覆盖度、挺水植被覆盖度和沉水植被覆盖度均呈正相关,与浮水植物覆盖度和人为干扰程度呈负相关;稚虫多样性与湖底底质和水体溶解氧呈正相关,并对结果进行了讨论.研究结果给洱海蜻蜓栖息地的保护及湖滨缓冲带生态修复提供了有益的参考和数据支持.
In order to explore the influence of environmental factors on the species diversity of dragonflies in Lake Erhai,field studies were carried out between May 2014 to May 2017 in 10 sample sites at Lake Erhai shore. A total of 1448 Odonata samples,belonging to 28 species,22 genera and 11 families,were reported. Meanwhile,20 families 46 species of plants were also recorded.Correlation analysis between diversity of Odonata species( adults and larvae) and environmental factors were carried out. The results showed that the diversity of adult dragonfly were positively correlated with the vegetation richness,wetland vegetation coverage,emergent vegetation coverage,submerged aquatic vegetation coverage,whereas negatively correlated with the degree of human disturbance and floating vegetation coverage. The diversity of larvae dragonfly were positively correlated with the dissolved oxygen and sediment. The findings of the study provided practical suggestions for the protection of dragonfly habitats and the ecological restoration of lakeshore buffer strips in Lake Erhai.
引文
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