铁岭市老城区大气质量现状及变化趋势研究

Study on Air Quality Status and Trend in Old City of Tieling City

"十二五"时期,辽宁省工业化和城市化进程还将加快,机动车保有量和能源消耗总量持续增长,大气污染防治形势将更加严峻。通过环境空气质量现状监测数据分析铁岭市老城区大气质量现状。可吸入颗粒物、降尘、二氧化氮三种污染物浓度在2001年较高,之后大体呈逐年下降趋势,只有二氧化硫浓度呈波动起伏变化的趋势。利用空气综合污染指数预测大气变化趋势,结果表明铁岭市老城区环境空气质量逐年改善。同时分析了老城区环境空气质量存在的问题。

During the ＂Twelfth Five - year Plan＂ period, the industrialization and urbanization process of Liaoning Province will speed up. The number of motor vehicles and the total energy consumption will continue to grow, posing more severe situations for the prevention and control of atmospheric pollution. The current air quality in old urban areas of Tieling City is studied through data analysis on current ambient air quality. The concentrations of particulate matter, dust and nitrogen dioxide show a downtrend year by year after hitting a peak in ：2001. Only sulfur dioxide concentration is fluctuating. Comprehensive air pollution index was used to predict the changing trend of atmosphere, the results show that air quality of the old city of Tieling is improving year by year. Some existing problems of environmental air quality in the old city were analyzed.