渔洞水库生物群落结构分析与水环境保护措施

Yudong Reservoir Biological Community Structure Analysis and Water Environmental Protection Measures

根据渔洞水库水质和生物监测数据,通过对其生物群落结构的种类组成、数量、分布以及多样性指数分析,得出微囊藻、针杆藻和脆杆藻是渔洞水库藻类的优势种群,每年水库有近7个月的时间处于水华风险的威胁;水库的浮游动物密度已达到中营养和富营养型水平,属中度污染;水库内鱼类种群结构不合理和鱼类数量不足,不足于消耗水库营养,给藻类生长提供了丰富的物质基础。因此,现状渔洞水库水体长期处于富营养状态,水质监测结果表明水库水体氮、磷超标严重,以此提出相应的保护措施。

According to the yudong reservoir water quality and biological monitoring data, by means of its biological species composition, quantity and distribution of community structure and diversity index analysis, it is concluded that the micro cap-sule algae, needle bar and brittle pole algae is the dominant population yudong reservoir algae, reservoir nearly seven months in a year blooms risks threats; Reservoir of zooplankton density has rich in nutrition and nutrient level, moderate pollution;Reservoir in fish population structure is not reasonable and fish are less than, less than in the consumption of reservoir, nutri-tion for algae growth provides a rich material foundation. As a result, the status quo yudong reservoir water body eutrophic state for a long time, water quality monitoring results show that the reservoir water, nitrogen, phosphorus exceeds bid badly,so the corresponding protection measures are put forward..