扰动方式对湖泊营养盐及藻类生物量影响的模拟研究

doi:10.19741/j.issn.1673-4831.2019.0498

生态与农村环境学报 ›› 2020, Vol. 36 ›› Issue (2): 234-241.doi: 10.19741/j.issn.1673-4831.2019.0498

扰动方式对湖泊营养盐及藻类生物量影响的模拟研究

赵家敏^1,2, 田伟^1,3, 杨桂军⁴, 张宏亮², 汤祥明¹

1. 中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 江苏南京 210008;
2. 安阳师范学院资源环境与旅游学院, 河南安阳 455000;
3. 安徽师范大学环境科学与工程学院, 安徽芜湖 241003;
4. 江南大学环境与土木工程学院, 江苏无锡 214122

收稿日期:2019-07-01 发布日期:2020-03-03
通讯作者: 汤祥明,E-mail:xmtang@niglas.ac.cn E-mail:xmtang@niglas.ac.cn
作者简介:赵家敏(1997-),女,河南济源人,本科生,研究方向为湖泊富营养化。E-mail:1025466091@qq.com
基金资助:
中国科学院前沿科学重点研究项目（QYZDJ-SSW-DQC008）；江苏省水利科技项目（2018001-2）；中国科学院南京地理与湖泊研究所"科创计划"（20184001638）

Effects of Disturbance Modes on Lacustrine Nutrients and Algal Biomass: An Experiment Study

ZHAO Jia-min^1,2, TIAN Wei^1,3, YANG Gui-jun⁴, ZHANG Hong-liang², TANG Xiang-ming¹

1. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;
2. School of Resource Environment and Tourism, Anyang Normal University, Anyang 455000, China;
3. School of Environmental Science and Engineering, Anhui Normal University, Wuhu 241003, China;
4. Environment and Civil Engineering School, Jiangnan University, Wuxi 214122, China

Received:2019-07-01 Published:2020-03-03

摘要/Abstract

摘要： 为探讨扰动方式对湖泊营养盐及蓝藻水华的影响，于2018年7月进行了19 d的室内模拟风浪扰动实验。研究结果显示，不扰动、间歇扰动和持续扰动3种处理方式下TN、TP和TDP浓度均随实验时间呈下降趋势。间歇扰动的TN浓度减少最多，对照组与间歇扰动组、持续扰动组之间TN浓度存在显著性差异（P<0.05）。TDP浓度减少幅度从大到小依次为间歇扰动组、对照组和持续扰动组，且间歇扰动组与持续扰动组之间TDP浓度存在显著性差异（P<0.05）。实验结束时，对照组、间歇扰动组和持续扰动组的ρ（叶绿素）分别为251.8、136.2和327.6 μg·L^-1，对照组与间歇扰动组、持续扰动组之间ρ（叶绿素）存在显著差异（P<0.05）。间歇扰动有利于水体中氮的去除，适宜强度的持续扰动增加了叶绿素浓度，促进了藻类生物量的累积和蓝藻水华的暴发。

关键词: 扰动方式, 营养盐, 蓝藻水华

Abstract: To understand the effect of disturbance modes on lacustrine nutrients and cyanobacterial blooms, an indoor simulative mixing experiment was conducted in July 2018 for 19 days. Results show that TN, TP and TDP concentrations decreased in the control group, intermittent disturbance group and continuous disturbance group. The concentrations of TN in the intermittent disturbance group showed the sharpest decline, and concentrations of TN differed significantly (P<0.05) among the three treatments. During the period of the experiment, the highest, medium and lowest mean values of TDP concentration were observed in the intermittent disturbance group, the control group and the continuous disturbance group, respectively. There were significant differences in TDP concentration between the intermittent disturbance and continuous disturbance groups (P<0.05). At the end of the experiment, the concentrations of Chl-a in the control group, intermittent disturbance group and continuous disturbance group were 251.8, 136.2 and 327.6 μg·L^-1, respectively. Concentrations of Chl-a differed significantly (P<0.05) among the three treatments. These results indicate that intermittent disturbance was conducive to nitrogen removal from lakes. Continuous disturbance at appropriate intensities may significantly increase Chl-a concentrations, thus benefitting algal accumulation and cyanobacterial blooms.

Key words: disturbance mode, nutrients, cyanobacterial bloom

中图分类号:

X524

赵家敏, 田伟, 杨桂军, 张宏亮, 汤祥明. 扰动方式对湖泊营养盐及藻类生物量影响的模拟研究[J]. 生态与农村环境学报, 2020, 36(2): 234-241.

ZHAO Jia-min, TIAN Wei, YANG Gui-jun, ZHANG Hong-liang, TANG Xiang-ming. Effects of Disturbance Modes on Lacustrine Nutrients and Algal Biomass: An Experiment Study[J]. Journal of Ecology and Rural Environment, 2020, 36(2): 234-241.

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扰动方式对湖泊营养盐及藻类生物量影响的模拟研究

Effects of Disturbance Modes on Lacustrine Nutrients and Algal Biomass: An Experiment Study

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