摘要
本研究分析了棘洪滩水库近15年来浮游植物群落结构变化特征及生物量变化规律,并应用浮游植物群落结构来评价棘洪滩水库水体的富营养化状态,以期对水库运行管理提供决策依据。结果表明:棘洪滩水库整体上处于中营养状态、少数时间段处于中富营养状态。棘洪滩水库浮游植物群落结构整体上表现为冬春季节硅藻为优势类群、夏初季节硅藻和绿藻为优势类群、夏末至深秋季节蓝藻为优势类群;棘洪滩水库每年秋季其浮游藻类生物量最高,推测温度和光照是水库浮游植物生长的主要驱动因子;棘洪滩藻类群落结构演化规律总体与所在区域气温的季节性变化相符合。此外,棘洪滩水库库中心水域水质优于近岸边区域,然而在放水量较大时库中心水域会明显受到引水影响;引水对水库的藻类生长有很大的影响,水库藻类峰值期间,大量的优质源水的引入对藻类也会有一定的暂时稀释作用。秋季藻华高发季节要严格监测外源水质、同时加大引水量、适时将引水口向库心位置前移等措施能够适当降低高藻供水风险。
In order to evaluate the eutrophication status of the Jihongtan Reservoir and provide evidence of decision for reservoir operation and management,in present study,we analyzed the phytoplankton community series and density during 2003-2018.The assessment of nutritional status according to phytoplankton showed that the reservoir was in middle nutrition state in most time and above middle nutrition state in few time.The dominant group was diatom,diatom and green algae,blue-green algae in the winter and spring,early summer,and autumn,respectively.The variation of community assemblage around years was consistent with seasonal change of temperature.thus,we speculate that temperature and sunlight were main factors for phytoplankton growth.Additionally,the water quality in central part was better than near shore regions.large intake water has a great impact on the algal community and growth in the reservoir.However,the central part was also effected by large intake water.the intake of large amount of high-quality water will also have a certain temporary dilution on the algae density.In autumn with high incidence of algae blooms,it is necessary to strictly monitor the exogenous water quality.Measures such as increasing intake water and timely moving the outlet to the center of the reservoir can appropriately appropriatelyreduce the risk of water supply.
作者
赵立宾
万年新
魏松
刘旭堂
宫立强
张烨
刘国祥
朱欢
ZHAO Li-bin;WAN Nian-Xin;WEI Song;LIU Xu-tang;GONG Li-qiang;ZHANG Ye;LIU Guo-xiang;ZHU Huan(Shandong Water Diversion Project Operation and Maintenance Center, Jinan 250000, China;Jihongtan Station of Shandong Water Diversion Project Operation and Maintenance Center, Qingdao 266100, Shandong Province, China;Boxing Station of Shandong Water Diversion Project Operation and Maintenance Center, Boxing 256500, Shandong Province, China;Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China)
出处
《中国农村水利水电》
北大核心
2020年第10期106-109,116,共5页
China Rural Water and Hydropower
基金
国家重点研发计划项目(2019YFD0900603)。
关键词
棘洪滩水库
调水
浮游植物
富营养化
Jihongtan Reservoir
intake water
phytoplankton
entrophication
作者简介
赵立宾(1982-),男,工程师,主要从事调水管理相关方面的研究,E-mail:35012158@qq.com;通讯作者:朱欢(1988-),男,助理研究员,主要从事浮游植物多样性与生态学研究,E-mail:huanzhu@ihb.ac.cn。
