青田县酸雨现状与成因分析

根据2003年-2007年青田县降水和大气监测数据，对青田县大气污染因子（SO2、NO2和TSP）和降水现状进行了分析，并对酸雨形成的原因进行了探讨。结果表明，青田县酸雨污染问题比较严重。从年变化趋势来看，酸雨强度较大，受酸性降水污染较重，且有逐年加重的趋势；从季度变化趋势来看，第一、四季度酸雨污染问题突出；从月份变化趋势来看，1月-3月、10月-12月酸雨污染问题较4月-9月严重。其形成主要是因为上风方向的S02、NOx等污染物浓度超标，随着天气系统的移动而被携带至本地区所致，同时与降水量、风速、气温和大气层结等气象条件关系密切。

The analysis of acid rain's present situation and cause in Qingtian County

According to precipitation and the atmospheric monitoring data from the year 2003 to 2007 in Qingtian County,we analyzed air pollution factors(SO2,NO2,and TSP) and the precipitation present situation in Qingtian County.We also had a discussion on the cause of how acid rain forms.The result indicates that the acid rain is a serious pollution to Qingtian County.Judging from the annual variation tendency,the intensity of acid rain is so big that our area is badly polluted now.To make matters worse,it has a ten...