考虑光盐交互作用的湖泊富营养化数学模型

发布时间：2018-05-04 13:56

本文选题：富营养化模型 + 水体光学　；参考：《中国环境科学》2017年11期

【摘要】：基于水体光学原理,确定了光照衰减系数与透明度之间的定量关系式;基于质量守恒原理,描述了氮磷营养盐与藻类之间的转化关系;耦合光因子和盐因子对藻类生长的驱动机制,建立了考虑光盐交互作用的富营养化数学模型.结合2015年4~7月在眉湖开展的水质监测数据,对模型进行了参数率定与验证.通过正交设计与情景模拟相结合,研究了光盐条件变化对藻类生长的驱动作用.结果表明,建立的富营养化模型能够较好的模拟不同光盐条件下藻类的生长趋势;低光照强度下营养盐浓度增加对藻类生长起到了抑制作用,营养盐浓度增加相同的倍数时TP浓度变化对藻类生长的影响作用要比TN浓度变化对藻类生长的影响作用大;整体上藻类的生长受到光照强度的影响高于营养盐,受到总磷的影响高于总氮,在设置的情境中光照强度、TP和TN浓度分别为89.6klx、0.168mg/L和2.72mg/L时最利于藻类生长.
[Abstract]:Based on the optical principle of water body, the quantitative relationship between light attenuation coefficient and transparency is determined, and the transformation relationship between nitrogen and phosphorus nutrients and algae is described based on the principle of conservation of mass. A mathematical model of eutrophication considering the interaction of light and salt was established by coupling the driving mechanism of light factor and salt factor on algae growth. Based on the monitoring data of water quality in Meimei Lake from April to July of 2015, the parameter rate of the model was determined and verified. The effect of light salt condition on algae growth was studied by combining orthogonal design with scenario simulation. The results showed that the eutrophication model could well simulate the growth trend of algae under different light salt conditions, and the increase of nutrient concentration at low light intensity could inhibit the growth of algae. The effect of TP concentration on algae growth was greater than that of TN concentration, and the algal growth was affected by light intensity more than that of nutrient salt. The effect of total phosphorus was higher than that of total nitrogen. The concentrations of TP and TN were 89.6KlxX 0.168mg / L and 2.72mg/L, respectively.
【作者单位】：郑州大学水利与环境学院;中国农业科学院农田灌溉研究所;
【基金】：国家自然科学基金面上项目(51679218) 河南省高校科技创新人才支持计划项目(17HASTIT031) 郑州大学优秀青年教师发展基金资助项目(1521323001)
【分类号】：X524

【相似文献】