冷空气过程与兰州市呼吸系统疾病的相关分析

In this paper, discussing influence of cold air on respiratory system disease，data of respiratory system disease, meteorological factors and air pollution during the same period in 2001-2005 were collected and analyzed mainly by correlation analysis. Results show that the cold air has simultaneous, hysteretic and preliminary influence on respiratory system disease. During the process of and 1-4 days after the cold air, the durative days, reduction of minimum temperature, rising of air pressure and precipitation are signally related to the respiratory system disease; 1-3 days advanced the cold air, the durative days, reduction of minimum temperature and mean temperature are closely related to the respiratory system disease. In addition, concentration of inhalable particles on 3 days advanced and 3, 4 days after the cold air could influence morbidity of the respiratory system disease. Totally, the cold air influence the respiratory system disease not only though variation of meteorological factors, but also by effecting the concentration of inhalable particles.