State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
Yunnan Key Laboratory of Pollution Process and Management of Plateau Lake-Watershed, Yunnan Institute of Environmental Science (Kunming China International Research Center for Plateau Lake), Kunming, 650034, China.
Environ Sci Pollut Res Int. 2018 Jan;25(3):2239-2247. doi: 10.1007/s11356-017-0659-x. Epub 2017 Nov 8.
The concentration, light conditions during treatment, and the number of hydrogen peroxide (HO) additions as well as the HO treatment combined with subsequent shading to control algal blooms were studied in the field (Lake Dianchi, China). The cyanobacterial stress and injury due to HO were dose dependent, and the control effectiveness and degradation of HO were better and faster under full light than under shading. However, HO was only able to control a bloom for a short time, so it may have promoted the recovery of algae and allowed the biomass to rebound due to the growth of eukaryotic algae. A second addition of HO at the same dose had no obvious effect on algal control in the short term, suggesting that a higher concentration or a delayed addition should be considered, but these alternative strategies are not recommended so that the integrity of the aquatic ecosystem is maintained and algal growth is not promoted. Moreover, shading (85%) after HO addition significantly reduced the algal biomass during the enclosure test, no restoration was observed for nearly a month, and the proportion of eukaryotic algae declined. It can be inferred that algal blooms can be controlled by applying a high degree of shading after treatment with HO.
研究了现场（中国滇池）中浓度、处理期间的光照条件、过氧化氢（HO）的添加次数以及 HO 处理与随后的遮荫相结合对控制藻类水华的效果。HO 对蓝藻的胁迫和损伤具有剂量依赖性，全光照下的控制效果和 HO 的降解速度均优于遮荫条件。然而，HO 只能短时间控制水华，因此可能会由于真核藻类的生长而促进藻类的恢复和生物量的反弹。在短期内，以相同剂量再次添加 HO 对藻类控制没有明显效果，这表明应考虑更高的浓度或延迟添加，但不建议采用这些替代策略，以保持水生态系统的完整性，防止藻类生长。此外，HO 添加后进行 85%遮荫显著减少了围隔试验期间的藻类生物量，近一个月内未观察到恢复，真核藻类的比例下降。可以推断，HO 处理后进行高程度遮荫可以控制藻类水华。
