人们有一个直观感受,近几年沙尘暴的暴发频次和强度跟几年前比有所降低,但对人体的影响似乎更大了。这一说法得到一些统计数据的证实。比如年月日,一场席卷大半个中国的沙尘暴暴发时,北京市的呼吸道疾病患者同比激增左右;南方的广州市,感冒、咳嗽、哮喘、慢阻肺等呼吸道疾病患者也比往常多了。 People have an intuitive feeling that in recent years the frequency and intensity of outbreaks of sandstorms have decreased somewhat compared with a few years ago, but the impact on the human body seems even greater. This statement has been confirmed by some statistics. For example, in the dusty, cough, asthma, COPD and other respiratory diseases in Guangzhou in the south, there were more respiratory disease patients in Beijing than in the same period of last year when a sandstorm swept over half of China.