长三角“水乡客厅”水体透明度数值模型构建  

Numerical Model of Water Transparency in the Water Village Living Room in Yangtze River Delta

作　　者：朱天依 王欢 胥瑞晨 ZHU Tian-yi;WANG Huan;XU Rui-chen(Shanghai Investigation,Design&Research Institute Limited Company of China Three Gorges Corporation,Shanghai 200335,China;Eco-environmental Engineering Research Center,China Three Gorges Corporation,Beijing 100038,China;College of Environment,Hohai University,Nanjing 210098,China)

机构地区：[1]中国长江三峡集团有限公司,上海勘测设计研究院有限公司,上海200335 [2]中国长江三峡集团有限公司长江生态环境工程研究中心,北京100038 [3]河海大学环境学院,南京210098

出　　处：《长江科学院院报》2024年第5期51-58,共8页Journal of Changjiang River Scientific Research Institute

基　　金：上海市科委自然科学基金项目(21002410600);中国长江三峡集团有限公司科研项目(202003129)。

摘　　要：“水乡客厅”作为长三角区域一体化的重要示范性工程,如何提升其水体透明度,改善水体感官仍然是一个亟待解决的难题。在相关水质监测及悬浮物沉降试验的基础上,分析研究了“水乡客厅”水体透明度的主要影响因素,并构建了其与水体透明度的多元回归方程,基于该方程,构建了水体透明度数值模型。结果显示:相较于圩内河道,圩外河道及湖荡的水体透明度相对较低;研究区域内水体透明度的主要影响因素为悬浮物浓度,其皮尔逊相关系数为-0.48,呈明显负相关关系,次要因素为叶绿素浓度;分圩内河道、圩外河道、湖荡区域分别构建悬浮物沉降系数与悬浮物浓度、水体流速的拟合方程,决定系数R 2均>0.8,拟合效果较好;基于上述分析结果所构建的水体透明度数值模型能够较好地描述“水乡客厅”水体透明度的分布规律,可为后续区域水生态修复及富营养化治理提供技术支撑。The Water Village Living Room is a core demonstration zone for integrated ecological and high-quality development in the Yangtze River Delta(Shanghai-Jiangsu-Zhejiang region).Enhancing its water transparency and sensory appeal remains a challenge.On the basis of water quality monitoring and suspended solids settling experiments,we examined the key factors affecting water transparency and constructed a numerical model for assessing transparency in the Water Village Living Room through multiple regression analysis.Findings highlight that waters outside the polder areas exhibit lower transparency compared to those within.The concentration of suspended solids emerges as the principal transparency determinant,evidenced by a strong inverse relationship(Pearson’s correlation coefficient reaching-0.48)with transparency.Chlorophyll concentration ranks as a secondary influence.Furthermore,we established the correlations between sedimentation coefficient of suspended solids and both their concentrations and water flow velocity for varied locations—inside polders,outside polders,and lakes.These correlations demonstrate robustness,with coefficients of determination(R 2)exceeding 0.8.The developed numerical model not only elucidates water transparency distribution patterns in the Water Village Living Room but also serves as a vital tool for water eco-environment restoration and the treatment of eutrophic water bodies.

关 键 词：水乡客厅 水体透明度 悬浮物浓度 叶绿素浓度 数值模型模拟 

分 类 号：X52[环境科学与工程—环境工程]