宜昌市酸雨的年季变化特征分析  

Analysis on Annual and Seasonal Change Characteristics of Acid Rain in Yichang City

作　　者：王海燕[1] 毛成忠 

机构地区：[1]武汉中心气象台,湖北武汉430074 [2]宜昌市气象局

出　　处：《现代农业科技》2018年第1期213-216,共4页Modern Agricultural Science and Technology

摘　　要：利用宜昌市1994年1月至2007年2月的酸雨观测月数据文件,分析了酸雨的年际变化和季节变化特点。结果表明,宜昌市夏季酸雨污染最轻,冬季、春季酸雨污染最重;1998—2006年降水的酸性减弱趋稳;2000—2006年,中雨、大雨、暴雨的洁净程度越来越差;2001年以前,降水pH值和K值各季节之间的变化和各季节的年际变化明显,有明显的变化周期;2001年以后,降水pH值和K值各季节之间的变化和各季节的年际变化差异均减小,没有明显的变化周期。Using the seasonal observation data of acid rain in Yichang City during January 1994 to February 2007 ,the seasonal and annual change characteristics of acid rain were analyzed in this paper.The results showed that the acid rain pollution of Yichang City was the lightest in summer, and the severest in winter and spring.The acid of precipitation decreased from 1998 to 2006.The clean degrees of moderate rain, heavy rain and rainstorm were increasingly poor during 2000-2006.Before 2001 ,the seasonal and annual change of pH value and K value was obvious ,with obvious periodic change.After 2001 ,the differences of pH value and K value between seasonal change and annual change were decreasing,and there was no obvious periodic change.

关 键 词：酸雨 PH值 K值 年变化 季变化 特征分析 湖北宜昌 

分 类 号：X517[环境科学与工程—环境工程]