| 不同超声强度下微囊藻群体沉降及其上浮过程对光照和温度的响应 |
| |
| 引用本文： | 谭啸,孙玉童,段志鹏,曾庆飞,郑雪莹,刘倩倩.不同超声强度下微囊藻群体沉降及其上浮过程对光照和温度的响应[J].湖泊科学,2017,29(5):1168-1176. |
| |
| 作者姓名： | 谭啸 孙玉童 段志鹏 曾庆飞 郑雪莹 刘倩倩 |
| |
| 作者单位： | 河海大学浅水湖泊综合治理与资源开发教育部重点实验室, 河海大学环境学院, 南京 210098,河海大学浅水湖泊综合治理与资源开发教育部重点实验室, 河海大学环境学院, 南京 210098,河海大学浅水湖泊综合治理与资源开发教育部重点实验室, 河海大学环境学院, 南京 210098,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, 南京 210008,河海大学浅水湖泊综合治理与资源开发教育部重点实验室, 河海大学环境学院, 南京 210098,河海大学浅水湖泊综合治理与资源开发教育部重点实验室, 河海大学环境学院, 南京 210098 |
| |
| 基金项目： | 国家自然科学基金项目（31470507）、中央高校科研业务费项目（2013B32414）和江苏省优势学科平台项目（PAPD）联合资助. |
| |
| 摘 要： | 以太湖微囊藻群体为研究对象,研究低频超声作用下,4种超声强度和不同处理时间对微囊藻群体的抑制效应,试图得出最优超声参数,同时探讨超声处理后的微囊藻群体对光照和温度的响应.结果表明,当超声强度为0.0353 W/cm~3、处理时间为60 s时,藻细胞沉降量高达80%,且此时藻细胞浓度和叶绿素a浓度均保持不变,表明超声未破碎藻细胞,细胞内含物不会泄漏污染水质,因此作为最优超声参数.随后,对超声处理后的微囊藻群体在不同光照和温度条件下进行恢复培养,结果表明光照和温度均能影响微囊藻群体的浮力恢复,但光照的影响更明显,当光照度为2000 lx时,藻细胞在培养120 h后漂浮率恢复至对照组水平.超声后的藻细胞在较低温度(≤20℃)下漂浮率无显著变化,而在较高温度(25℃)下,培养72 h后漂浮率迅速升高,至120 h能恢复至对照组水平的80%左右.因此,野外超声控藻应选择低光强、低温的时段,采用间歇式多次处理,抑制微囊藻群体上浮,使其彻底沉降.
|
| 关 键 词： | 微囊藻群体 超声强度 超声时间 沉降 漂浮率 光照 温度 太湖 |
| 收稿时间： | 2016/7/25 0:00:00 |
| 修稿时间： | 2016/12/2 0:00:00 |
Influence of ultrasonic intensity on sinking of Microcystis colonies and their floating process under different light and temperature conditions |
| |
| TAN Xiao,SUN Yutong,DUAN Zhipeng,ZENG Qingfei,ZHENG Xueying and LIU Qianqian.Influence of ultrasonic intensity on sinking of Microcystis colonies and their floating process under different light and temperature conditions[J].Journal of Lake Science,2017,29(5):1168-1176. |
| |
| Authors: | TAN Xiao SUN Yutong DUAN Zhipeng ZENG Qingfei ZHENG Xueying and LIU Qianqian |
| |
| Institution: | Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, P. R. China,Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, P. R. China,Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, P. R. China,State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China,Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, P. R. China and Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, P. R. China |
| |
| Abstract: | |
| |
| Keywords: | Microcystis colonies ultrasonic intensity exposure time sedimentation floating rate illumination temperature Lake Taihu |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《湖泊科学》浏览原始摘要信息 |
| 点击此处可从《湖泊科学》下载免费的PDF全文 |
|
