| 浙江省PM2.5与O3污染时空演变特征及影响因素分析 |
| Analysis of Spatio-Temporal Evolution Characteristics and Influencing Factors of PM2.5 and O3 Pollution in Zhejiang Province |
| 投稿时间：2024-12-11 修订日期：2025-03-25 |
| DOI：10.19316/j.issn.1002-6002.2026.01.13 |
| 中文关键词: PM2.5 O3 大气污染 时空演化 影响因素 浙江省 |
| 英文关键词:PM2.5 O3 air pollution spatio-temporal evolution influencing factors Zhejiang Province |
| 基金项目:国家自然科学基金(42171164);浙江省自然科学基金(LY20D040001) |
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| 中文摘要: |
| PM2.5与O3污染是浙江省在快速城镇化和经济发展过程中亟待解决的问题。基于2014—2023年浙江省大气PM2.5与O3浓度数据,系统比较、归纳二者的时空演变特征,并运用灰色关联分析和环境库兹涅茨曲线模型探讨浙江省PM2.5与O3污染的经济社会影响因素。从时间变化来看,PM2.5与O3年均浓度呈下降趋势;二者的季节变化特征差异显著,PM2.5表现为冬高夏低,O3则相反。从空间分布来看,PM2.5浓度整体呈现西北高、东南低的分布格局,O3浓度则表现为北高南低;二者均具有显著的空间集聚性,其中热点区均集中在浙北地区,PM2.5冷点区位于沿海地区,O3冷点区位于浙西南地区。从影响因素来看,第二产业占比、人口密度、工业烟(粉)尘排放量、工业NOx排放量、工业SO2排放量、规模以上工业企业总产值、等级公路里程、公路货运总量、产业转移指数是影响浙江省PM2.5与O3浓度的主要因素。工业NOx排放量、第二产业占比、碳排放强度与PM2.5浓度呈正线性关系;建成区绿化覆盖率与PM2.5浓度呈负线性关系;人口密度增加会加剧PM2.5污染,但超过2 125人/km2后会出现正面效应;随着规模以上工业企业数和总产值的增加,PM2.5浓度先降后升。浙江省在生态城市建设中应强化环保政策的执行力度,推动产业转型升级,严格监管污染物排放,并提升城市绿化水平,从而切实改善大气环境质量。 |
| 英文摘要: |
| PM2.5 and O3 pollution are urgent issues that need to be addressed in Zhejiang Province during its rapid urbanization and economic development.Based on the PM2.5 and O3 concentration data in Zhejiang Province from 2014 to 2023,this paper systematically compares and summarizes their spatio-temporal evolution characteristics,and uses grey relational analysis and the Environmental Kuznets Curve model to explore the economic-social influencing factors of PM2.5 and O3 pollution in Zhejiang Province.In terms of temporal changes,the annual average concentrations of PM2.5 and O3 show a downward trend,but their seasonal variation characteristics differ significantly.PM2.5 concentrations are higher in winter and lower in summer,while the pattern for O3 is the opposite.In terms of spatial distribution,PM2.5 concentrations generally present a pattern of being higher in the northwest and lower in the southeast,while O3 concentrations are higher in the north and lower in the south.Both have significant spatial agglomeration,with hotspots concentrated in the northern part of Zhejiang Province.Coldspots of PM2.5 are located in coastal areas,while those of O3 are located in the southwestern part of Zhejiang Province.In terms of influencing factors,the proportion of the secondary industry,population density,industrial smoke (dust) emissions,industrial NO<i>x emissions,industrial SO2 emissions,total output value of industrial enterprises above a designated size,mileage of graded highways,total volume of road freight,and industrial transfer index are the main factors affecting the concentrations of PM2.5 and O3 in Zhejiang Province.Industrial NO<i>x emissions,the proportion of the secondary industry,and carbon emission intensity show a positive linear relationship with PM2.5 concentrations;In contrast,built-up area green coverage rate exhibits a negative linear relationship with PM2.5 concentrations;An increase in population density exacerbates PM2.5 pollution,but a positive effect occurs once density exceeds 2125 people/km2.As the number and total output value of industrial enterprises above a designated size increase,PM2.5 concentrations first decrease and then increase.In the process of ecological city construction in Zhejiang Province,it should strengthen the implementation of environmental protection policies,promote industrial transformation and upgrading,strictly supervise pollutant emissions,and improve the level of urban greening,so as to effectively improve the quality of the atmospheric environment. |
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