大伙房水库水体富营养化及其影响因素分析

Study on eutrophication of Dahuofang Reservoir and its influencing factors

基于RCA模型建立了大伙房水库水质模型,对不同水质要素进行模拟,分析了各水质要素空间分布规律及其随时间的变化特征,研究了各河流营养盐输入对水库水质要素的影响,结果表明:模拟得到的水质要素与监测点位的实测值符合良好,将各河流磷、氮输入均减半后,水库水体夏季溶解氧浓度明显增加;苏子河的磷输入对抚顺取水口处浮游植物生长和总磷的贡献大于浑河,对大伙房水库水质管理具有重要的实际价值。

Based on the RCA model,the water quality model of Dahuofang Reservoir was established,and the different water quality elements were simulated.The spatial distribution of water quality factors and their changes with time were analyzed.The effects of nutrient input on the water quality of the reservoir were studied.It shows that the simulated water quality factors and the measured values of the monitoring points are in good agreement.After the phosphorus and nitrogen inputs of each river are reduced by half,the dissolved oxygen concentration in the reservoir water body increases obviously in the summer;the phosphorus input of Suzi River is the phytoplankton at the Fushun water intake.The contribution of growth and total phosphorus is greater than that of Hunhe River,which has important practical value for the water quality management of Dahuofang Reservoir.