京津冀植被类型对典型城市夏季O<sub>3</sub>和PM<sub>2.5</sub>贡献

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摘要以京津冀地区BVOCs排放清单为基础,采用WRF-CMAQ模型模拟与情景分析相结合的方式研究了2018年7月京津冀地区BVOCs排放对O₃和PM_2.5浓度贡献,解析了北京、邯郸、承德、保定等典型城市不同植被类型BVOCs排放对O₃和SOA浓度的影响水平,并应用O₃和SOA生成潜势核算结果对模拟结果进行验证.结果显示, BVOCs排放对北京、邯郸、承德、保定O₃生成贡献率分别为30.19%、24.77%、35.56%、26.73%,对SOA生成贡献率为2.55%、3.32%、4.17%、3.59%;北京、承德的乔木与果园BVOCs排放对O₃和SOA浓度贡献最大,邯郸、保定的草地与庄稼BVOCs排放对O₃和SOA浓度贡献最大;数值模拟结果与O₃、SOA生成潜势表征的潜在影响基本符合.

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关键词 ：植被功能类型, BVOCs, O₃和SOA, WRF-CMAQ, 生成潜势

Abstract：Based on the BVOCs emission inventory, WRF-CMAQ model was used with scenario analysis to investigate the effects of BVOCs emissions on O₃ and PM_2.5 in the Beijing-Tianjin-Hebei region in July 2018. The effects of BVOCs emissions from different vegetation types on O₃ and SOA concentrations in Beijing, Handan, Chengde, Baoding and other cities were quantitatively analyzed, which was verified with the O₃ and SOA formation potential method. As the results showed, the contributions of BVOCs emission to O₃ in Beijing, Handan, Chengde and Baoding were 30.19%, 24.77%, 35.56% and 26.73%, respectively, and the contributions to SOA were 2.55%, 3.32%, 4.17% and 3.59%, respectively. Trees and orchards showed the greatest influences on O₃ and SOA in Beijing and Chengde, while grassland and crops showed the greatest contributions in Handan and Baoding. Additionally, the results of numerical simulation and of potential generation method showed relatively consistent results.

Key words： vegetation functional types BVOCs O₃ and SOA WRF-CMAQ formation potential

收稿日期: 2022-11-10

PACS:

X513

基金资助:国家自然科学基金资助项目(52170174)

通讯作者: 程昊淼,副教授,chenghaomiao@bjut.edu.cn E-mail: chenghaomiao@bjut.edu.cn

作者简介: 蔡斌(1996-),男,湖北黄冈人,北京工业大学博士研究生,主要从事大气污染防治及环境规划管理方面研究.发表论文4篇.1830580717@qq.com

引用本文:

蔡斌, 程昊淼, 亓浩雲, 李奥哲, 康天放. 京津冀植被类型对典型城市夏季O₃和PM_2.5贡献[J]. 中国环境科学, 2023, 43(6): 2734-2743. CAI Bin, CHENG Hao-miao, QI Hao-yun, LI Ao-zhe, KANG Tian-fang. Contributions to O₃ and PM_2.5 in summer of vegetation types in typical cities in Beijing-Tianjin-Hebei region. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(6): 2734-2743.

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