• 关键词：黑臭河流  浮游微藻  丰度  生物量  裸藻门  谷河

• 基金项目：国家重点研发计划项目（No.2016YFC0502800）；中央高校基本科研业务费专项资金

• 何淑雯
• 中山大学环境科学与工程学院, 广州 510275

• 于菲
• 中山大学环境科学与工程学院, 广州 510275

• 刘玉
• 1. 中山大学环境科学与工程学院, 广州 510275;2. 广东省环境污染控制与修复技术重点实验室, 广州 510275

• 杨翔翡
• 中山大学环境科学与工程学院, 广州 510275

• 梁仁思
• 中山大学环境科学与工程学院, 广州 510275

• 蔡逸莉
• 中山大学环境科学与工程学院, 广州 510275

• 摘要：藻类密度增加是黑臭现象发生的重要原因之一.目前的黑臭评价标准缺少藻类等水生生物指标，而黑臭河流中浮游微藻时空特征研究也极少.于2017年秋和2018年冬和春在谷河布设6个样点，采用污染指数法（I₁）和黑臭多因子加权指数法（I₂）评价谷河黑臭情况，同时调查浮游微藻的丰度和生物量等，并对黑臭评价结果和微藻进行Pearson相关分析.结果表明，I₂指数法更适合评价谷河的黑臭情况；裸藻门丰度与I₂的相关系数较高（r=0.784，p<0.01）；裸藻门丰度比例和生物量比例与I₂的相关系数分别为0.750和0.776（p<0.01）；裸藻门的种数和裸藻门污染指示种个数与I₂的相关系数均为0.623（p<0.01）.裸藻门可能适合于作为评价谷河黑臭的水生生物指标.天然水体中微藻或裸藻与致臭物质的产生等有待深入研究.

• Abstract：Increased algae abundance was one of the important reasons for black-odor river. However, current criteria for black-odorous water assessment lacked indicators of aquatic organisms, such as algal, and few studies were carried out to investigate the spatial-temporal characteristics of planktonic algae in black-odorous rivers. Six sites were located in the Gu River, which were sampled in autumn 2017, winter and spring in 2018, respectively. To evaluate the black-odorous water in the Gu River, the pollution index (I₁) and black-odor index with multi-factors (I₂) were used. At the same time, planktonic algal abundance and biomass in the water were measured, and Pearson correlation analysis was used to determine the relationship between black-odorous water and planktonic algal. The results showed that I₂ were more suitable for assessing the Gu River. The higher positive correlation was observed between Euglena abundance and I₂ (r=0.784, p<0.01). There are positive correlations between I₂ with Euglenophyta abundance percentage (r=0.750, p<0.01) as well as biomass percentage (r=0.776, p<0.01). Also, the I₂ was positively related to species numbers as well as pollution-indicating species numbers of Euglenophyta, both with the correlation coefficient of 0.623 (p<0.01). Therefore, Euglenophyta could be considered as possibly aquatic monitoring indicators of the Gu River. Further research is needed to determine the interaction of algae or Euglenophyta with production of odor compounds in natural waters.

• Key words：black-odor river  planktonic algae  abundance  biomass  Euglenophyta  the Gu River

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