摘要
分析华东地区15个酸雨观测站的1993—2004年数据资料,结果显示华东地区的酸雨灾害在全国范围内较为严重,其中以长江以南的浙江、福建地区尤为突出.1993—2004年华东地区降水的酸度呈现出先减轻后加重的趋势.降水量是影响华东酸雨的电导率和pH值的重要因素.pH值季节变化由高到低为夏、秋、冬、春,酸雨频率随季节的变化不显著.对同期15个观测站的电导率变化的分析显示,12年间华东地区降水的电导率呈现先稳定后变幅增大的趋势,降水酸度和电导率的年际变化存在显著的正相关关系.应当对影响降水酸度和电导率的相关大气成分加强监测与研究.
This paper analyzes the data of 15 acid rain monitoring stations in East China from 1993 to 2004, and the results show that the acid rain disasters were serious in East China, especially in Zhejiang and Fujian province which are in south of the Yangtze River. The precipitation acidity in East China from 1993 to 2004 shows a trend of decrease then increase,while the precipitation is the most important factor affecting the conductivity and pH value. The seasonal precipitation pH value is in descending order from summer, autumn, winter, to spring, but the acid rain frequency does not change obviously with season shift. The precipitation conductivity from the 15 stations is ana- lyzed, and the results show that the conductivity remains stable then fluctuates in big range during the 12 years, and there is a significantly positive correlation between precipitation acidity and conductivity. The monitoring and re- search on the composition of atmosphere and precipitation acidity should be strengthened in future meteorological work.
出处
《南京信息工程大学学报（自然科学版）》
CAS
2013年第2期120-126,共7页
Journal of Nanjing University of Information Science & Technology（Natural Science Edition）
基金
公益性行业(气象)科研专项(GY-HY(QX)20090612)
关键词
华东地区
时空分布
PH值
电导率
气象条件
East China
spatial and temporal distribution
pI-1 value
conductivity
meteorological factor
