湖州地区酸雨特征及变化趋势分析

The Analysis of Characteristics and Changing Tendency of Acid Rain in the City of Huzhou

利用湖州站2008年1月至2015年8月酸雨观测数据,该文对近几年湖州地区的降水p H值、电导率、月变化、季节变化、年变化以及连续降水对酸雨p H值的影响进行了初步分析。结果表明,2008-2014年酸雨出现有明显的季节性变化,酸雨出现频率呈波动下降趋势。结合环境观测数据分析,酸雨频率降低与环境条件改善有一定关系。此外,在以上数据分析的基础上,结合2015年前8个月观测数据,发现近几年来降水p H值有明显从弱酸性变为碱性的趋势。

With the data of acid rain observation from August 2015 to January 2008 by Huzhou Weather Station,this paper preliminarily analyzes the influence of the precipitation pH,electrical conductivity of rainwater,monthly pre？cipitation,seasonally precipitation,yearly precipitation and continuing precipitation on the ph values of acid rain in the city of Huzhou. The result shows that during 2008-2014,there is an obvious seasonal variation of the appearance of acid rain and its frequency of occurrence showed a wavelike decrease. According to the data of environmental ob？servation,the decrease in the occurrence of acid rain is related to the improvement of environment. In addition,with the data of the first eight months in 2015,the author of this paper finds that precipitation ph value has a tendency from weakly acidic to alkalinity.