基于水质水动力学模型的乌江渡水库二氧化碳排放研究  

Carbon Dioxide Emission in Wujiangdu Reservoir Based on Water Quality and Hydrodynamics Model

作　　者：吴晓玲[1] 马晨皓 王志伟 王文彬 WU Xiao-ling;MA Chen-hao;WANG Zhi-wei;WANG Wen-bin(College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;Jiangsu Water Conservancy Surveying and Designing Institute Co.,Ltd.,Nanjing 225127,China)

机构地区：[1]河海大学水文水资源学院,江苏南京210098 [2]江苏省水利勘测设计研究院有限公司,江苏南京225127

出　　处：《水电能源科学》2025年第2期172-176,共5页Water Resources and Power

基　　金：国家重点研发计划(2023YFC3006501)。

摘　　要：随着我国提出“双碳”目标与绿色高质量发展的进一步推进,水电作为清洁能源在现有巨大存量的基础上得到进一步发展,然而其低碳属性却在近年来的研究中存在质疑。水库作为受人类活动深度影响的水生生态系统,其碳循环至今尚未明确。因此,基于垂向二维水质水动力学模型(CE-QUAL-W2),结合2017年的实测数据,针对乌江干流上的乌江渡水库进行建模,模拟水库水—气界面二氧化碳扩散通量的时空分布情况。计算发现,库区水—气界面二氧化碳扩散通量呈现冷季高、暖季低,库区中心高、回水区及坝上低的时空分布特点。该模型针对水电站取、泄水口高程位置,模拟水—气界面二氧化碳扩散通量,可为水库碳排放的计算及水库低碳运行提供借鉴。As China puts forward the goal of"dual carbon"and further promotes the green and high-quality development,hydropower as a traditional clean energy has been further developed on the basis of the existing huge stock.But its low-carbon attribute has faced questions in recent years.As an aquatic ecosystem affected by human activities deeply,the carbon cycle of the reservoir is still unclear.Based on a vertical two-dimensional quality-hydrodynamic model(CEQUAL-W2),combined with measured data in 2017,the Wujiangdu Reservoir which was built on the main stream of the Wujiang River was modeled,and the spatial and temporal distribution of carbon dioxide diffusion flux at the water air interface of the reservoir has been calculated.It can be found that the diffusion flux of carbon dioxide at the water air interface in the reservoir area showed a high emission in the cold season and a low emission sometimes even absorb carbon dioxide from air in the warm season.The spatial distribution characteristics of the diffusion flux of carbon dioxide showed higher in the center of the reservoir area,lower in the inlet area and the dam site.The diffusion of carbon dioxide along the water air interface was simulated through scenario calculations for different turbine inlet elevations and spillway tunnel elevations,which provides a reference for the calculation of carbon emissions in reservoirs and low-carbon operation.

关 键 词：乌江渡水库 二氧化碳 碳排放 CE-QUAL-W2模型 

分 类 号：TV7[水利工程—水利水电工程]