生态环境学报2025，Vol.34Issue(12)：1900-1908,9.DOI:10.16258/j.cnki.1674-5906.2025.12.007
核电厂周边大气环境总放射性多尺度变化及影响因素
Multi-scale Variations and Influencing Factors of Total Radioactivity in Atmospheric Environment Around Nuclear Power Plants
摘要
Abstract
This study examined the total α and total β radioactivity in aerosols surrounding the Ningde Nuclear Power Plant to investigate the spatial-temporal distribution characteristics,periodic patterns,and correlations with various influencing factors of total atmospheric radioactivity in the vicinity of nuclear power plants.Revealing the periodic patterns and coupling mechanisms of these data has significant application value for improving atmospheric environmental risk early warning systems for nuclear power plants.This study employed wavelet transformation to analyze atmospheric monitoring data around the Ningde Nuclear Power Plant and utilized the wavelet coherence spectrum to study the correlation between total α and total β radioactivity concentration and meteorological factors(precipitation and humidity),and inhalable particulate matter factors(PM2.5 and PM10).The results indicate that:1)The total α activity concentration in aerosols around the Ningde Nuclear Power Plant was slightly higher than that of other domestic nuclear power plants,but was still within the normal environmental level range.2)The total α and total β activity concentrations in aerosols both exhibited a primary cycle of approximately 18 months and a secondary cycle of approximately 40 months,whereas the periodicity of the total α and total β activity concentrations in aerosols around similar foreign nuclear power plants was not significant.3)Overall,the time series of the total α and total β activity concentrations in aerosols demonstrated strong synchronicity with a positive correlation,particularly evident at medium and high frequency scales.Total α and total β exhibited negative correlations with precipitation and humidity,with conjugate cycles primarily distributed at medium and low scales.The correlation between total α,total β,PM2.5,and PM10 was not strong,particularly with no correlation observed at low scales.However,locally,total α and total β preceded PM2.5 and PM10 by approximately 1/8-1/4 cycle.关键词
核电厂/小波变换/总放射性/影响因素/气溶胶Key words
nuclear power plant/wavelet transformation/total radioactivity/influencing factors/aerosol分类
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王春梅,姜炳棋,胡俊,陈代文,黄丽华,程湾湾..核电厂周边大气环境总放射性多尺度变化及影响因素[J].生态环境学报,2025,34(12):1900-1908,9.基金项目
福建省自然科学基金项目(2024J01168) （2024J01168）
福建省环保科技计划项目(2025R003) （2025R003）
