2004—2008年辽宁酸雨时空分布特征研究  

Spatial-temporal distribution characteristics of acid rain from 2004 to 2008 in Liaoning province

作　　者：洪也[1] 董德文[2] 马雁军[1] 周德平[1] 刘宁微[1] 张云海[1] 王扬锋[1] 

机构地区：[1]中国气象局沈阳大气环境研究所,辽宁沈阳110016 [2]辽宁省防雷技术服务中心,辽宁沈阳110016

出　　处：《气象与环境学报》2009年第2期28-32,共5页Journal of Meteorology and Environment

基　　金：国家自然科学基金(40575067);国家科技研院所社会公益研究专项资金项目(2005DIB2J111);2008年公益性行业(气象)科研专项项目(GYHY20080620);中国气象局沈阳大气环境研究所环境安全开放实验室项目(200804)共同资助

摘　　要：根据2004—2008年辽宁22个酸雨监测站的统计资料,对近年辽宁酸雨的时空分布特征进行分析和探讨。结果表明:2004—2008年,pH值年平均值范围为5.49—6.62,呈逐年降低、酸雨强度逐年增强的趋势;酸雨主要发生在大连、本溪县和丹东及兴城地区,其中大连酸度最强,建平县最弱;辽宁酸雨有明显的季节变化,pH值以夏季酸度为最强、春季为最弱;酸雨出现频率以秋季为最高,春季为最低。Based on the data from 22 acid rain monitoring stations from 2004 to 2008 in Liaoning province, the spatial-temporal distribution characteristics of acid rain were analyzed. The results show that the annual average of pH value ranges from 5.49 to 6. 62 with a decreasing tendency. However, the acidity is an increasing tendency year by year. The acid rain occurs mainly in Dalian, Dandong, Xingcheng and Benxi county. The highest acidity appears in Dalian, while the lowest is in Jianping in the west of Liaoning province. The acid rain is of obvious seasonal variation in Liaoning province, and pH value is the highest in summer and the lowest in spring. Moreover, the occurrence frequency of the acid rain is the highest in autumn and the lowest in spring.

关 键 词：辽宁 酸雨 酸雨频率 时空分布 

分 类 号：X517[环境科学与工程—环境工程]