金华市酸雨污染现状及特点分析

The Current Situation and Characteristic of Acid Rain Pollution in Jinhua

酸雨是金华市一个重要的环境问题。对实测结果统计分析表明：金华市酸雨污染逐年加重，如１９９１年和１９９３年酸雨率各为７２．５％和９４．９％；一年中春、冬季酸雨频率高，而且降水酸度较强．降水ｐＨ值以３、４月份最低；酸雨的形成受大气环流、逆温、雾等气象条件的影响，凡处于环流转换日期田雨率就高；酸雨和雨水ｐＨ值与逆温、能见度等呈正相关．

Acid rain is an important environment problem in Jinhua. The result from analysing the monitoring data shows:The pollution of acid rain is becoming more and more serious in Jinhua.For example,acid rain is 72. 5 Percent in 1991 and 94. 9 percent in 1993. In Spring and Winter the rate of acid rain and acid intensity of precipitation are much higher. They vary greatly from defferent months. The highest rate is in March and April. Acid rain is affected by general circulation,temperature inversion,visibility etc. The rate of acid rain is high on the data of circulation change. Acid rain rate and the pH of precipitation is directed to temperture inversion. Visibility and so on.