Study On Chronic Health Effects Of Ambient Air Ozone Exposure

The health problem accompanying air pollution is an important public health problem.With the improvement of PM_2.5concentration,the problem of ambient ozone pollution has become increasingly prominent.The problem of disease burden caused by ambient ozone exposure has attracted widespread attention from around the world.In order to quantify the impact of long-term ozone exposure on human health,this study conducted analysis based on ozone simulation data,using the method of the global disease burden study,and carried out the assessment of ozone exposure and related chronic disease burden in our country from 2013 to 2017 on the district and county scale,Get the following results.1)Our country’s ambient ozone concentration has shown a continuous increase from2013（61.08 ppb）to 2017（67.63 ppb）;the ambinet ozone concentration of various districts and counties varies greatly,and high-concentration areas are about 3.3 times that of low-concentration areas.In terms of spatial distribution,most areas of eastern and central are heavily polluted,while the western region is relatively lightly polluted.2)The number of excess deaths related to ambient ozone exposure in China is about70 700 to 86 000,and the life loss years are about 696 300 to 856 900.From 2013 to 2017,the burden of diseases related to ambient ozone exposure showed a fluctuating downward trend,which was the lowest in 2016 In terms of space,the districts and counties with severe disease burden are mainly distributed in China’s Sichuan-Chongqing Basin and Shaanxi-Gansu-Ningxia and other northwestern regions;ambient ozone-related disease burdens show obvious provincial differences.The provinces with the highest and lowest disease burdens are respectively in Chongqing city and Hainan province,the former is about 6 to 7 times that of the latter.3)The burden of diseases related to ambient ozone exposure also varies greatly among people of different genders and different age groups.Gender stratification studies have found that the burden of disease in males is approximately 1.28 to 1.69 times that of females;age stratification studies have found that ozone-related disease burdens in people aged 40 and above account for 90%of the total disease burden.