长沙市市区近5年酸雨变化趋势及相关因素分析

The Analysis about the Acid Rain Changing Trend and Correlation Factors in the Urban Area of Changsha City in Recently 5 Years

长沙市酸雨出现较早,近年来逐渐加重.2004年酸雨频率已达90%以上,pH年均值在4.0以下.文章以2000～2005年上半年的长沙市降水统计数据为基础,分析了酸雨的变化趋势,为长沙市酸雨的有效控制提供了可靠依据.

The acid rain in Changsha city appeared in the early time, and it gets heavier in recently year. In 2004, the acid rain frequency had reached 90% above. The annual average of pH is below 4.0. This report is based on the relevant statistical data from 2000- 2005, and this report analyzes the changing trend of acid rain, it provides some reliable information for the control of acid in Changsha city.