生态与农村环境学报2023，Vol.39Issue(12)：1534-1546,13.DOI:10.19741/j.issn.1673-4831.2022.0458
运用AEM3D模型分析滇池蓝藻对营养盐变化的响应
Analysis of Cyanobacterial Response to Nutrient Changes in Dianchi Lake By Using AEM3D Model
摘要
Abstract
In order to understand the spatial and temporal distribution patterns of cyanobacterial outbreaks and the effect of exogenous nutrient regulation on cyanobacterial outbreaks in Dianchi Lake,the 3-Dimensional coupled Hydrodynamic-Aquatic Ecosystem Model(AEM3D)from HydroNumerics,Australia was used to simulate the spatial and temporal distri-bution characteristics of TN,TP and cyanobacteria,and to investigate the response relationship of cyanobacteria under dif-ferent exogenous nutrient concentrations by regulating the values of exogenous nutrients.The results show that the concen-tration of TP was higher in spring,which acted as an important nutrient factor in algal growth.The concentration of TN was higher in autumn,which played a key role in algal growth.When simulating single-factor exogenous nutrient reduction at different rates,it was found that total exogenous phosphorus had a greater effect on cyanobacteria than total exogenous ni-trogen,while the changes in exogenous nitrogen in spring had a greater effect on cyanobacteria.When only TP was con-trolled,a 25％reduction was effective in reducing Chl-a concentration in the lake,and when only TN was controlled,a 50％nitrogen reduction was more reasonable.Compared to the reduction of a single nutrient,the effect on control of Chl-a concentration was superior when nitrogen and phosphorus nutrients were both reduced by 10％or above 50％at the same time.关键词
滇池/蓝藻/AEM3D/外源营养盐Key words
Dianchi Lake/cyanobacteria/AEM3D/exogenous nutrient分类
资源环境引用本文复制引用
杜成栋,潘继征,张国正,李勇,罗纯良,李清濯,华跃洲..运用AEM3D模型分析滇池蓝藻对营养盐变化的响应[J].生态与农村环境学报,2023,39(12):1534-1546,13.基金项目
国家自然科学基金(41001324) （41001324）
国家水体污染控制与治理科技重大专项(2017ZX07204005) （2017ZX07204005）
