贵州百花水库微囊藻毒素的时空分布特征

生态学杂志

贵州百花水库微囊藻毒素的时空分布特征

齐继清¹,李秋华^1*,陈文生^1*,马欣洋¹,陈倩¹,熊梅君¹,韩孟书¹,孙荣国²

(¹贵州师范大学贵州省山地环境信息系统和生态环境保护重点实验室，贵阳 550001；²贵州师范大学化学与材料科学学院，贵州 553000)

出版日期:2019-09-10 发布日期:2019-09-10

Temporal and spatial distribution of microcystin in Baihua Reservoir, Guizhou Province, China.

QI Ji-qing¹, LI Qiu-hua¹*, CHEN Wen-sheng^1*, MA Xin-yang¹, CHEN Qian¹, XIONG Mei-jun¹, HAN Meng-shu¹, SUN Rong-guo²

(¹Key Laboratory of Mountainous Environment Information System and Ecological Environment Protection of Guizhou Province, Guizhou Normal University, Guiyang 550001, China; ²College of Chemistry and Materials Science, Guizhou Normal University, Guizhou 553000, China).

Online:2019-09-10 Published:2019-09-10

摘要/Abstract

摘要： 为了解水库中微囊藻毒素(microcystin, MC)浓度的时空分布特征，于2017年6月—2018年5月对贵州高原水库的百花水库进行每月一次的样品采集，分析水中MC的两种异构体，包括MCRR和MC-LR，以及藻类总丰度、蓝藻丰度、叶绿素a(Chla)、营养盐、水温和透明度等水环境因子的变化特征。结果表明：百花水库MCRR浓度为0.048～0.681 μg·L^-1，MC-LR浓度为0.046～0.964 μg·L^-1；在温度较高时出现MC-RR，温度偏低时出现MC-LR；花桥采样点检测出MC的次数最多并且浓度最高，达0.964 μg·L^-1，没有超过限量值1.0 μg·L^-1，大坝采样点检测出MC的次数最少；MC-RR与水温、铵态氮(NH₄⁺-N)浓度呈正相关，MC-LR与NH₄⁺-N浓度、亚硝态氮(NO₂^--N)浓度、pH呈正相关；MC-R与湖泊假鱼腥藻(Pseudanabaena limnetica)和卷曲鱼腥藻(Anabaena circinalis)丰度呈显著正相关，与色球藻(Chroococcussp.)丰度呈正相关，MC-LR与浮游植物丰度的相关性不明显。

关键词: 园林绿化树种, 吸滞能力, PM_2.5, 叶表面形态, 原子力显微镜(AFM）

Abstract: To understand the spatial and temporal distribution of microcystin (MC) concentrations in the reservoir, water samples were monthly collected in Baihua Reservoir, Guizhou Plateau from June 2017 to May 2018. The concentrations of MC (including two isomers of MC-RR and MC-LR), total phytoplankton abundance, cyanobacterial abundance, chlorophyll-a (Chla) concentration, nutritive salt concentration, water temperature and transparency were analyzed. The results showed that the concentrations of MC-RR and MC-LR ranged from 0.048 to 0.681 μg·L^-1 and from 0.046 to 0.964 μg·L^-1 respectively in the Baihua Reservoir. MC-RR occurred at high temperature while MC-LR occurred at low temperature. The Huaqiao sampling site had the highest number of detection and the highest concentration of MC, reaching 0.964 μg·L^-1, which did not exceed the limited value of 1.0 μg·L^-1; while dam sampling site was in the opposite. The MC-RR concentration was positively correlated with water temperature and ammonium nitrogen (NH₄⁺-N) concentration, and MC-LR was positively correlated with NH₄⁺-N concentration, nitrite nitrogen (NO₂^--N) concentration, and pH. Meanwhile, MC-RR concentration was significantly positively correlated with the abundance of Pseudanabaena limnetica and Anabaena circinalis and positively correlated with Chroococcussp. abundance, while MC-LR concentration was not significantly correlated with phytoplankton abundance.

Key words: landscaping trees, adsorption ability, PM_2.5, leaf surface morphology, atomic force microscopy (AFM).

齐继清,李秋华,陈文生,马欣洋,陈倩,熊梅君,韩孟书,孙荣国. 贵州百花水库微囊藻毒素的时空分布特征[J]. 生态学杂志.

QI Ji-qing, LI Qiu-hua, CHEN Wen-sheng, MA Xin-yang, CHEN Qian, XIONG Mei-jun, HAN Meng-shu, SUN Rong-guo. Temporal and spatial distribution of microcystin in Baihua Reservoir, Guizhou Province, China.[J]. cje.

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