Beijing Environmental Protection Bureau the first 10 months of this year, the sky air quality standa

Beijing Environmental Protection Bureau: the first 10 months of this year, air quality standards of 172 sky – the data map. King Wen photo source: CFP vision Chinese Beijing, November 14th Beijing (reporter Kan Feng) after several days of haze weather experienced today, Beijing ushered in a sunny sky "standard". Reporters learned from the Beijing Municipal Environmental Protection Bureau, the first 10 months of this year, the cumulative concentration of the city of Beijing PM2.5 micrograms cubic meters, down by 8.6%, air quality standards for the number of days of 172 days, an increase of 11 days. According to reports, by the end of October this year, Beijing’s main pollutant in addition to decrease in PM2.5, sulfur dioxide, nitrogen dioxide and total PM10 concentrations were 9, 43 and 81 micrograms per cubic meter, down 30.8%, 6.5% and 12.9%. Beijing air quality standards for the number of days 172 days, an increase of 11 days. Specifically, the first 10 months, Beijing district air quality showed varying degrees of improvement. Among them, Changping, Miyun, Huairou, Yanqing, Mentougou and other areas of PM2.5 concentration is low; Haidian, Mentougou, Changping, Tongzhou and other areas to improve the range. Recently, the Beijing Tianjin Hebei region suffered multiple rounds of heavy pollution weather, Beijing’s air quality situation has also been renewed concern. Beijing Environmental Protection Bureau also introduced, in October, Beijing autumn and winter seasonal transition characteristics, static stability, frequent temperature inversion, high humidity and other adverse weather conditions in Beijing city and diffusion, the concentration of PM2.5 decreased the cumulative decline. November Beijing into the heating season, coal and other pollutants emissions will increase significantly, there will be heavy air pollution. Although the first 10 months of this year, Beijing’s total PM2.5 concentration in year-on-year decline, but this winter, Beijing anti haze pressure still can not be ignored. Since October, Beijing has repeatedly started warning of heavy pollution, the heavy pollution level of yellow warning sounded 4 times. According to the monitoring data of air quality in Beijing in recent 10 years, the average number of days of heavy air pollution in Beijing fourth quarter for 23 days, October, November and December respectively for 7 days, 8 days, 8 days, accounting for four of the total number of days 1/4 quarter. The Ministry of environmental protection environmental management Secretary Liu Bingjiang introduced earlier in the interview also said, according to the historical analysis, affected by the La Nina phenomenon, this year occurred in the frequency and intensity of heavy pollution weather may be too high. After the start of heating, heavy pollution weather to deal with the situation may be more severe. But he also pointed out that the peak air pollution does not reach the level of last year’s explosion. (end)相关的主题文章: