江苏省宿迁市酸雨发生规律的分析与研究

Analysis and research of acid rain rule in Suqian City,Jiangsu Provence

该文利用宿迁市沭阳县和泗洪县观测站2007—2010年的酸雨观测数据和气象资料,统计分析了宿迁市酸雨的变化特征,并对比了酸雨pH值与降水量、降水电导率(K值)、酸雨频率变化规律的关系。结果表明:宿迁市5 a来酸雨单次降水pH值最低达3.26 mol·L-1,属强酸雨。5 a来,沭阳县降水平均pH值均达酸雨标准;泗洪县降水平均pH值未达酸雨标准。春秋季降水酸性最强,酸雨频率出现也最多,冬季则降水酸性和酸雨频率最低;地面风向对宿迁酸雨污染也有一定的影响,形成宿迁酸雨的主要是东南风和东北风;宿迁市雨量的大小对酸雨出现百分率影响不大,但对降水酸度有影响,暴雨的酸性最强,其次是大雨。

Using acid rain observation date and meteorological date of shuyang and sihong, variation characteristics of acid rain was analyzed in this paper. This paper also find out the relationship among acid rain pH, rainfall, precipitation Specific Conductivity（K） and variation characteristics of acid rain. The result is that during 5 years the least of acid rain pH in Suqian was 3.26 mol L-1 which is severe acid rain. In 5 years,average precipitation pH of Shuyang was Up to the standard of acid rain, and it was normal in Sihong. According to the research acid rain was the most serious in spring, and that was contrary completely. It was found that the Southeast and the northeast lead to acid rain easier. Rainfall has influence on acidity, and the acidity is proportional to rainfall.