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杭州湾生物修复区与非修复区浮游植物群落结构比较

刘巧,刘萌萌,杨娜,张琪,包炎琳,何培民,霍元子*   

  1. (上海海洋大学海洋生态与环境学院,上海 201306)
  • 出版日期:2019-02-10 发布日期:2019-02-10

Comparative analysis of phytoplankton community structure in bioremediation area and non-remediation area of Hangzhou Bay.

LIU Qiao, LIU Meng-meng, YANG Na, ZHANG Qi, BAO Yan-lin, HE Pei-min, HUO Yuan-zi*   

  1. (College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China).
  • Online:2019-02-10 Published:2019-02-10

摘要: 为比较杭州湾生物修复区与非修复区浮游植物群落结构及其对环境变化的响应,于2017年7—12月对杭州湾10个站位水环境和浮游植物群落结构进行调查。结果显示:修复区营养盐平均浓度低于非修复区。两个区域共发现浮游植物8门103种,以硅藻种类最多。修复区发现7门54种,非修复区发现8门79种,两个区域共有的浮游植物种类占总种类数的29.1%。修复区浮游植物细胞密度平均值为1.3×104 cells·L-1,主要优势种为囊裸藻(Trachelomonassp.);非修复区浮游植物细胞密度平均值为12.3×104 cells·L-1,主要优势种为梅尼小环藻(Cyclotella meneghiniana)。冗余分析显示,硅酸盐含量和pH分别是影响修复区和非修复区浮游植物密度变化的最主要因素。

关键词: 稻田, 氨挥发, 湿沉降

Abstract: To compare the structure of phytoplankton community and understand its responses to environmental changes in the bioremediation and non-remediation areas of Hangzhou Bay, ten sites were monthly sampled from July to December 2017. During this period, the average concentration of nutrients in the remediation area was lower than that in the non-remediation area. A total of 103 species belonging to eight phyla were identified, and Bacillariophyta was the most diverse group. A total of 54 and 79 species were identified in the bioremediation and nonremediation areas, respectively. The species shared by the two areas accounted for 29.1% of the total species. In the bioremediation area, the average cell abundance was 1.3×104 cells·L-1 and Trachelomonassp. was the most dominant species. In the nonremediation area, the average cellabundance was 12.3×104 cells·L-1 and Cyclotella meneghiniana was the most dominant species. The results of redundancy analysis indicated that silicate concentration and pH was the most important factors affecting the abundance of phytoplankton in the bioremediation and non-remediation areas, respectively.

Key words: Rice field, Ammonia volatilization, Wet deposition