基于PM_(2.5)浓度达标约束和区域联防联控的河南省地级市大气环境容量研究  

Research on Atmospheric Environmental Capacities of Prefecture-Level Cities in Henan Province Based on PM_(2.5)Concentration Target Constraints and Regional Joint Prevention and Control

作　　者：王硕迪 董欣宜 苏方成 徐起翔 王克[1,2] 张瑞芹[1,2] WANG Shuodi;DONG Xinyi;SU Fangcheng;XU Qixiang;WANG Ke;ZHANG Ruiqin(School of Ecology and Environment,Zhengzhou University,Zhengzhou 450001,China;Research Institute of Environmental Science,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学生态与环境学院,河南郑州450001 [2]郑州大学环境科学研究院,河南郑州450001

出　　处：《环境科学研究》2024年第5期985-995,共11页Research of Environmental Sciences

基　　金：国家重点研发计划项目(No.2017YFC0212403);中央引导地方科技发展专项资金计划项目(No.HN 2016-149)。

摘　　要：为研究以河南省为代表的受大气污染传输影响显著省份的大气环境容量,本文基于CMAQ模型,采用嵌套迭代模拟的方法,计算了在周边省份区域联防联控的前提下河南省PM_(2.5)浓度达标(GB 3095-2012《环境空气质量标准》二级标准限值)时17个地级市SO_(2)、NO_(x)、一次PM_(2.5)和NH_(3)的大气环境容量.结果表明:①省外传输对河南省PM_(2.5)浓度的贡献率为50.29%,其中周边7个省份传输贡献率为36.19%,可见周边省份实施大气污染联防联控是河南省实现空气质量达标的必要条件.②在省级PM_(2.5)浓度达标时,河南省周边7个省份SO_(2)、NO_(x)、一次PM_(2.5)和NH_(3)的大气环境容量分别为279.07×10^(4)、465.61×10^(4)、172.67×10^(4)和182.96×10^(4)t,超载排放量分别为243.13×10^(4)、402.79×10^(4)、143.63×10^(4)和142.54×10^(4)t.③在区域联防联控的前提下,全省PM_(2.5)浓度达标时河南省17个地级市的SO_(2)、NO_(x)、一次PM_(2.5)和NH_(3)环境容量分别为23.48×10^(4)、52.40×10^(4)、22.74×10^(4)和32.17×10^(4)t,超载排放量分别为48.43×10^(4)、106.78×10^(4)、45.84×10^(4)和61.63×10^(4)t.④河南省东南部区域的SO_(2)和NO_(x)排放以及西北部区域的一次PM_(2.5)和NH_(3)排放会对全省PM_(2.5)浓度变化有显著贡献.研究显示,河南省PM_(2.5)浓度达标时,4种主要大气污染物的环境容量的最大值为52.40×10^(4)t,超载排放量的最大值为106.78×10^(4)t.为实现河南省PM_(2.5)浓度达标,河南省周边省份均需要实施大气污染联防联控,同时河南省需要加大对东南部区域的SO_(2)和NO_(x)排放以及西北部区域的一次PM_(2.5)和NH_(3)排放的管控.In order to evaluate the atmospheric environment capacity of Henan and other provinces affected by air pollution transports,this study simulated the atmospheric environmental capacities of SO_(2),NO_(x),primary PM_(2.5)and NH_(3)of 17 prefecture-level cities in Henan Province,taking into account the national standard of PM_(2.5)concentration and regional joint prevention and control.The atmospheric environment capacity is calculated using a nested iterative simulation method based on CMAQ model.The results show that:(1)Interprovincial transmission contributed 50.29%to PM_(2.5)pollution in Henan Province,of which 36.19%was contributed by transmission from the seven surrounding provinces.Obviously,to make the air quality in Henan Province meet national standards,it is necessary to implement joint air pollution prevention and control with surrounding provinces.(2)When the provincial PM_(2.5)concentrations reach the national standard,the total atmospheric environmental capacities of SO_(2),NO_(x),primary PM_(2.5)and NH_(3)in the seven surrounding provinces of Henan Province are 279.07×10^(4),465.61×10^(4),172.67×10^(4)and 182.96×10^(4)t,respectively,and the overload emissions are 243.13×10^(4),402.79×10^(4),143.63×10^(4)and 142.54×10^(4)t,respectively.(3)When PM_(2.5)concentration of Henan Province reaches the national standard and surrounding provinces implement regional joint prevention and control,the total atmospheric environmental capacities of SO_(2),NO_(x),primary PM_(2.5)and NH_(3)in 17 prefecture-level cities in Henan Province are 23.48×10^(4),52.40×10^(4),22.74×10^(4)and 32.17×10^(4)t,respectively,and overload emissions are 48.43×10^(4),106.78×10^(4),45.84×10^(4)and 61.63×10^(4)t,respectively.(4)Changes in SO_(2)and NO_(x)emissions in southeastern region of Henan Province and changes in primary PM_(2.5)and NH_(3)emissions in northwestern region contributed significantly to the changes in PM_(2.5)concentration in the province.The research shows that when the PM_(2.5)concentration of Henan Pro

关 键 词：CMAQ模型 空气质量达标 PM_(2.5) 区域传输 大气环境容量 

分 类 号：X32[环境科学与工程—环境工程]