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遮光对滇池春季藻类水华的影响
Authors
周起超
宋立荣
李林
Publication date
1 January 2015
Publisher
Abstract
为了研究(太阳)光强与水华藻类增殖的关系并探讨光强调节措施对水华的控制效果,2014年3-4月在滇池(草海)开展了基于围隔试验的水华早期遮光控藻效果的研究,结果显示:相比同期对照组,遮光率为85%时利于浮游植物生长且生物量升高了13.4%(5.8%~26.4%),遮光率为99%时抑制浮游植物生长且浮游植物生物量削减了28.8%(21.7%~41.5%),这与滇池高日照辐射与紫外强度及春季相对较低的水温有关;藻类组成方面,遮光99%后能提高蓝藻所占比例,且使群体微囊藻明显漂浮聚集于水体表面;遮光对藻类活性、水质等亦有一定影响。结合该研究与其它相关研究分析,水华控制中遮光率的选择需因控制目标、水华阶段性与地域特点制宜
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Institute of Hydrobiology, Chinese Academy Of Sciences
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oai:ir.ihb.ac.cn:342005/42608
Last time updated on 23/01/2021