人类-生态世进程中流域水环境的复合污染  

Combined pollution of watershed water environment in the course of human-ecological world

作　　者：宋朝晖 关翔鸿 田雨馨 韦庚锐 陈啊聪 汝旋 廖建波 邱光磊 韦朝海 SONG Zhao-hui;GUAN Xiang-hong;TIAN Yu-xin;WEI Geng-rui;CHEN A-cong;RU Xuan;LIAO Jian-bo;QIU Guang-lei;WEI Chao-hai(School of Environment and Energy,South China University of Technology,Guangzhou 510006,China;School of Life&Environmental Sciences,Guilin University of Electronic Technology,Guilin 541004,China;Research Center for Eco-Environmental Engineering,Dongguan University of Technology,Dongguan 523808,China)

机构地区：[1]华南理工大学环境与能源学院,广东广州510006 [2]桂林电子科技大学生命与环境科学学院,广西桂林541004 [3]东莞理工学院生态环境工程技术研发中心,广东东莞523808

出　　处：《中国环境科学》2025年第3期1529-1545,共17页China Environmental Science

基　　金：国家自然科学基金资助项目(U1901218)。

摘　　要：针对珠江10余年的数据跟踪调查,结合气候变暖、河流酸化的未来场景,模拟了未来80a营养元素比值和金属微量元素浓度的演变.发现未来自然水体可能存在3种重要变化:其一,碳源分配不足、营养素积累和生化效率下降;其二,酸化后的离子交换增强以及微量元素的背景浓度升高;其三,水质变化诱导的重金属和微量有毒有害有机物的共同释放、相态分配的异化以及污染源的多环反馈.水体中溶液性质受物理场驱动的变化表现为浓度共振与共归趋效应的同步发生,复合污染是水体物化性质变化的不可逆表现,带来了地质背景值基线的10a级的快速更新,对天然水体评价阈值的计算将需要时代性的特征加以校正.人类面临着新生的水环境问题可能包括自然变化引发的元素暴露与活性演变、连续性输入排放的水质结构矛盾以及即将到来生态世对物种的公平性要求.Selecting Pearl River as a typical case,over a decade of data tracking and investigation was conducted.Simulated using the analytical data as well as future scenarios of climate warming and river acidification,this study predicted the evolution of nutrient element ratios and trace metal concentrations over the next 80 years.Three significant changes in natural water bodies were suggested:firstly,insufficient carbon source allocation and nutrient accumulation leading to decreased biochemical efficiency;secondly,elevated ion exchange due to acidification,resulting in higher background concentrations of trace elements;lastly,water quality fluctuation inducing the co-release of heavy metals and toxic organic micropollutants and phase distribution shifts,forming a multi-loop feedback of pollution sources.Our study suggests that changes in aqueous solution properties of water bodies are driven by the results of simultaneous occurrence of concentration resonance and convergence effects,which are crucial factors of the physical fields.Combined pollution irreversibly changes the physicochemical properties of water bodies,resulting in a rapid fluctuation of geological background baseline values over decades.Consequently,this necessitates epochal adjustments to the evaluation of natural water body thresholds.A new emergence of water environmental challenges may include element exposure and fate changes caused by the natural evolutions,water quality structure conflicts from continuous inputs and emissions,and the approaching demands for species equity in ecological era.

关 键 词：复合污染 溶液性质 气候变暖 河流酸化 浓度共振 地质基准值 

分 类 号：X522[环境科学与工程—环境工程]