中文摘要：

收集兰州市2001-2005年呼吸系统疾病资料、气象资料和空气污染资料,对呼吸系统疾病发病人数进行统计分析.结果表明：冷空气过程对于呼吸系统疾病有同期、滞后和前期影响.同期影响中,过程持续时间、最低温度降幅、气压升幅以及降水对呼吸系统发病人数影响较大;滞后影响主要存在于冷空气过程后1~4 d,受气压增幅、持续天数、最低温度降幅和降水影响较大;冷空气过程发生前1~3 d对呼吸系统疾病发病有影响,最低温度降幅、持续时间和平均温度降幅影响较大.冷空气过程之前第3天和之后第3、4天大气中可吸入颗粒物浓度对呼吸系统疾病发病有影响.冷空气过程前后气象要素的变化会对呼吸系统疾病产生影响,还可以通过影响大气可吸入颗粒物浓度而进一步影响呼吸系统疾病发病.

英文摘要：

The influence of cold air on respiratory system diseases was discussed and data on respiratory system diseases,meteorological factors and air pollution during 2001-2005 were collected and analyzed mainly by the correlation analysis.The results showed that cold air had simultaneous,hysteretic and preliminary influence on respiratory system diseases.1-4 days after the cold air,the durative days,reduction of minimum temperature,rising of air pressure and precipitation all were signally related to respiratory system diseases;1-3 days in advance of the cold air,the durative days,reduction of minimum temperature and mean temperature were closely related to the respiratory system diseases.Concentration of inhalable particles on 3 days in advance and 3,4days after the cold air could influence the morbidity of the respiratory diseases.Totally speaking,the way cold air influenced the respiratory system diseases was not only though variations of meteorological factors,but also by effecting the concentration of inhalable particles.