基于EFDC模型的太湖微塑料迁移规律及污染概率分布模拟  

Simulation of microplastic migration regularity and pollution probability distribution in Taihu Lake based on EFDC model

作　　者：孙昊 陈求稳 丁珏[2] 闫兴成 SUN Hao;CHEN Qiuwen;DING Jue;YAN Xingcheng(College of Water Conservancy and Hydropower,Xi’an University of Technology,Xi’an 710048,China;Eco-environmental Research Department,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]西安理工大学水利水电学院,陕西西安710048 [2]南京水利科学研究院生态环境研究所,江苏南京210029

出　　处：《水资源保护》2023年第6期169-177,共9页Water Resources Protection

基　　金：国家自然科学基金项目(52209097,51909166);江苏省青年基金项目(BK20220208);中央级科研院所基本科研业务费专项资金资助项目(Y921020);江苏省水利科技项目(2019024)。

摘　　要：通过耦合太湖环境流体动力学模型与拉格朗日粒子模型,计算了太湖6个主要输入源的微塑料粒子漂移路径,分析了影响微塑料粒子漂移路径的主要因素,进而评估了太湖湖区的微塑料污染概率。结果表明:微塑料输入源位置和附近湖流是影响微塑料迁移和归趋结果的重要影响因素;受湾内环流影响,湖湾是太湖微塑料的主要归趋位置,竺山湖和贡湖除受纳自身输入源的微塑料粒子,还受纳来自西、南沿岸区的微塑料粒子;竺山湖是太湖微塑料污染概率最高的湖区,污染主要来自湖湾自身输入源和西沿岸区输入源,其次为西沿岸区,其污染主要来自自身输入源和南沿岸区输入源。The drift paths of microplastic particles from six main input sources of Taihu Lake were calculated by coupling the environmental fluid dynamics code(EEDC)model with the Lagrangian particle model.The main factors affecting the drift path of microplastic particles were analyzed,and the microplastic pollution probability in Taihu Lake was further assessed.The results show that the location of microplastic input sources and nearby lake current are important factors determining the migration destination of microplastics.The lake bay is the main destination of microplastics in Taihu Lake due to the effect of circulation in the bay.Zhushan Lake and Gonghu Lake receive microplastic particles from their own input sources,as well as microplastic particles from the western and southern coastal areas.Zhushan Lake has the maximum microplastic pollution probability in Taihu Lake,with microplastic particles mainly from the input sources of the its own lake bay and the western coastal area.The microplastic pollution probability in the western coastal area ranks the second place,with microplastic pollution mainly from the input sources of itself and the southern coastal area.

关 键 词：微塑料迁移 湖流 环境流体动力学模型 污染概率 太湖 

分 类 号：X524[环境科学与工程—环境工程]