Trend Analysis of Acid Rain Pollution in Fifteen Years for Jiangsu Province

Present distribution and changing trend of acid rain from 1989 to 2003 was discussed on the basis of monitoring data of acid rain in some cities of Jiangsu. Results showed that acid rain pollution in areas southern to Huaihe River was generally more severely than that to the north. Although the occurrence ratio of acid rain showed some decrease since the end of seventh five-year plan period, pH remained and equivalent concentration of SO{2-}-4 still occupied the primacy in the rain composition. Pollution and eco-destroy resulted from acid rain were not mitigated evidently.