摘要
太湖蓝藻水华的爆发严重影响了太湖周边人们的生活与生产,如何有效控制蓝藻水华成为人们关注的热点。水动力被认为是决定藻类生长的关键环境因素之一。为了解水动力方式对太湖蓝藻的抑制效果,在野外条件下开展了连续性混合和间歇性混合对太湖蓝藻影响的研究。在连续性混合组,蓝藻和绿藻平均生物量在总藻类生物量中的占比分别为18.43%和76.54%;在间歇性混合组,其占比分别为56.07%,27.73%;在对照组,其占比分别为57.16%和30.72%。研究发现:连续性混合组中微囊藻数量占总藻平均比例(63.77%)显著低于对照组(85.13%)和间歇性混合组(84.48%)。在一定条件下连续性混合抑制了太湖蓝藻的生长,不利于微囊藻维持优势地位。此研究结果为太湖蓝藻水华的防治提供了技术支持和理论依据。
Outbreak of cyanobacteria blooms seriously affected the life and production of people around Lake Taihu.How to control cyanobacteria bloom effectively has become a hot topic.Hydrodynamics is considered to be one of the key environmental factors that determine the growth of algae.To understand the control effect of hydrodynamic mode on cyanobacteria in Lake Taihu,study on the effects of continuous and intermittent mixing on cyanobacteria in Lake Taihu were conducted under field conditions.In the continuous mixing group,the average biomass of Cyanophyta and Chlorophyta accounted for 18.43%and 76.54%of the total algal biomass;the intermittent mixing group was 56.07%,27.73%,and the control group was 57.16%and 30.72%.The study found that the number of Microcystis in the continuous mixed group (63.77%)was significantly lower than in the control group (85.13%)and the intermittent mixed group (84.48%).Continuous mixing inhibited the growth of Cyanobacteria in Lake Taihu under certain conditions,which was not conducive to maintaining the dominance of Microcystis.The study results provided technical support and theoretical basis for the preventing and control of cyanobacteria blooms in Lake Taihu.
作者
郭赟
潘越
黄晓峰
沈冀
李海妮
葛宇翔
张雅晶
杨桂军
GUO Yun;PAN Yue;HUANG Xiao-feng;SHEN Ji;LI Hai-ni;GE Yu-xiang;ZHANG Ya-jing;YANG Gui-jun(Wuxi Taihu Lake Restoration Co.,Ltd.,Wuxi 214062,China;School of Environment and Civil Engineering,Jiangnan University,Wuxi 214122,China)
出处
《环境科技》
2021年第2期38-43,共6页
Environmental Science and Technology
基金
国家水体污染控制与治理科技重大专项项目(2017ZX07-203-005-07).
关键词
太湖
水动力方式
微囊藻
蓝藻
Lake Taihu
Hydrodynamic mode
Microcystis spp.
Cyanobacteria
