摘要
通过对１９９２ ～１９９４ 年１７９ 个降水过程的ｐ Ｈ 值分析发现，这３ 年期间兰州市区共出现了２１次酸雨，且酸雨出现次数占降水总次数的１１ ．７ ％ ；兰州市区酸雨主要发生在夏半年；兰州酸雨的形成与市区空气中高 Ｓ Ｏ２ 和 Ｎ Ｏ Ｘ 源密切相关。
Analysed the pH values of 179 precipitation processes from 1992 to 1994 in Lanzhou found that there were 21 times acid rain occured in this period,which is 11.7% to the total rainfall process.Most of acid rain in Lanzhou occured in the summer,and was closely related with high dersity sourses of SO 2 and NO 4 in air pollution.
出处
《干旱气象》
1999年第2期13-15,共3页
Journal of Arid Meteorology
关键词
酸雨
局地影响
生成机制
acid rain
regional affection
formation mechanism
