Temporal and Spatial Variation Characteristics and Dynamic Prediction of Air Quality in the Bohai Rim Region
Based on the air quality index(AQI),pollutant concentration and socio-economic data of cities in Bohai Rim region from 2017 to 2021,the temporal and spatial variation characteristics of AQI and pollutant concentration in Bohai Rim region were analyzed by mathematical statistics and kriging interpolation method,and the correlation between AQI and pollutant concentration and socio-economic factors was discussed by Pearson correlation analysis method.The air quality and pollutant concentration from June 2022 to December 2023 were predicted by time series prediction model.The results showed that the AQI and pollutant concentration in Bohai Rim region generally decreased annually.The monthly change of AQI showed a"W"shaped fluctuation.During the year,the concentration of O3 showed an inverted"V"shaped fluctuation,while the concentration of other pollutants showed an opposite trend to O3.AQI was generally characterized by high in southwest and low in northeast,while the pollutant concentration had obvious spatial distribution differences.The AQI grades of five representative cities around Bohai Rim were mainly good,with PM2.5 and PM10 as the main pollutants in winter and O3 as the main pollutants in summer.Population was the main factor affecting AQI,and the area of urban garden green space had certain influence on AQI.The forecast results showed that the concentrations of AQI and major pollutants except O3 in the Bohai Rim region will gradually decrease with time.
air qualityair pollutantsvariation of temporal and spatialtime series predictionthe Bohai Rim region
NETL
NSTL
万方数据
维普
