欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志

• 研究报告 • 上一篇    下一篇

大沙河水库拟柱孢藻昼夜垂直分布特征

薛现光1,方光宏2,邹楚钧1,朱德平1,肖利娟1,3,彭亮1,3*   

  1. 1暨南大学水生生物研究中心, 广州 510632;2开平市大沙河供水公司, 广东江门 529300;3广东省水库蓝藻水华防治中心, 广州 510632)
  • 出版日期:2020-07-10 发布日期:2021-01-09

Diel vertical distribution patterns of Raphidiopsis raciborskii in Dashahe Reservoir.

XUE Xian-guang1, FANG Guang-hong2, ZOU Chu-jun1, ZHU De-ping1, XIAO Li-juan1,3, PENG Liang1,3*   

  1. (1Department of Ecology, Jinan University, Guangzhou 510632, China; 2Kaiping Dashahe Water Supply Company, Jiangmen 529300, Guangdong, China; 3Guangdong Research Center of Engineering Technology for Control of Reservoir Cyanobacterial Blooms, Jinan University, Guangzhou 510632, China)
    .
  • Online:2020-07-10 Published:2021-01-09

摘要: 为了解大沙河水库拟柱孢藻(Raphidiopsis raciborskii)昼夜垂直分布模式,于2018年9月20—21日(丰水期)和2018年12月31日(枯水期)对该水库拟柱孢藻进行昼夜定点分层采样,分析影响拟柱孢藻垂直分布的主要环境因子。用Morisita指数和平均滞留深度定量检验拟柱孢藻垂直分布格局;用方差分析检验拟柱孢藻是否存在昼夜垂直迁移现象,并采用多元回归方法分析拟柱孢藻垂直分布格局和环境因子的关系。结果表明:拟柱孢藻在丰水期呈现集群分布模式,主要分布于0.5~2 m水层,平均滞留深度为1.5 m;枯水期在6 m水深以上的水层呈现随机分布模式;丰水期和枯水期均无明显的昼夜垂直迁移现象;大沙河水库温跃层的出现是影响拟柱孢藻的昼夜垂直分布模式的主导因素。

关键词: 能源植物, 植被恢复, 芒草, 改良, 重金属土壤

Abstract: To understand the diel vertical distribution patterns of Raphidiopsis raciborskii in Dashahe Reservoir,we carried outa survey on September 20-21 (wet season) and December 31 (dry season) of 2018. The distribution patterns of R. raciborskii population were examined with Morisita’s index and mean retention depth, and the differences of which were tested with a oneway ANOVA. A multiple regression model was used to analyze the effects of environmental variables on diel vertical distribution. The results showed that R. raciborskii clumped in water column in wet season, mainly distributed in the depth from 0.5 to 2 m, with a mean retention at 1.5 m. They were randomly distributed in dry season. R. raciborskii did not show vertical migration in both wet and dry seasons. Thermal stratification was the key factor driving diel vertical distribution of R. raciborskii in the reservoir.

Key words: Miscanthus, phytoremediation., soil amelioration, heavy metal, energy plant