典型温带深水湖库溶解氧影响因子分析--以崂山水库为例  

Analysis of Influencing Factors of Dissolved Oxygen in A Typical Deep Reservoir in Temperate Regions of China--Take Laoshan Reservoir as An Example

作　　者：赵璐 金红 魏志强 刘青川 周相宙 张晓红 ZHAO Lu;JIN Hong;WEI ZhiQiang;LIU Qingchuan;ZHOU Xiangzhou;ZHANG Xiaohong(Qingdao Bio-Environmental Monitoring Center,Qingdao266000,China)

机构地区：[1]山东省青岛生态环境监测中心,山东青岛266000

出　　处：《中国资源综合利用》2024年第10期196-198,205,共4页China Resources Comprehensive Utilization

摘　　要：为探讨温带深水湖库中环境因素和水化学指标对溶解氧的影响,结合崂山水库2021年国控站点的自动及手工历史监测数据分析溶解氧浓度的变化特征及主要影响因素。研究结果表明:2021年,崂山水库溶解氧浓度呈冬春季节高于夏秋季节的特征,低氧数据[溶解氧(Dissolved Oxygen,DO)浓度小于5 mg/L]主要出现在6—10月,凌晨、午后、傍晚是低氧发生的重要时刻。通过水温、pH值、水深、浮游生物、营养状态指数、外来补水及其他化学指标、日照时间等影响因子相关性分析,得出水深即变温层的存在是崂山水库夏秋季节溶解氧自动监测数据偏低的主要原因,浮游生物活动对溶解氧浓度产生直接影响。To explore the influence of environmental factors and hydrochemical indicators on dissolved oxygen in temperate deep-water lakes and reservoirs,combined with the automatic and manual historical monitoring data from the national control station of Laoshan Reservoir in 2021,the changes in dissolved oxygen concentration characteristics and main influencing factors were analyzed.The research results showed that in 2021,the dissolved oxygen concentration in Laoshan Reservoir showed a higher trend in winter and spring than in summer and autumn.Low oxygen data[Dissolved Oxygen(DO)less than 5 mg/L]mainly occurred from June to October,with early morning,afternoon,and evening being important moments for low oxygen occurrence.Through correlation analysis of influencing factors such as water temperature,pH,water depth,plankton,nutritional status index,external water replenishment and other chemical indicators,and sunshine duration,it was found that the presence of a variable temperature layer,also known as water depth,is the main reason for the low dissolved oxygen automatic monitoring data in the summer and autumn seasons of Laoshan Reservoir.Floating biological activity has a direct impact on dissolved oxygen concentration.

关 键 词：深水湖库 溶解氧 影响因子 变温层 

分 类 号：X524[环境科学与工程—环境工程]