贵州省2002年酸雨污染情况分析

为了准确及时地掌握贵州省的酸雨污染现状和发展趋势,为全省的酸雨控制提供科学依据,于2002 年3月至2003年2月在贵州省全省范围内进行年度降水pH值和离子组分监测。监测结果显示:全省降水pH年均值为5.38,个别城市降水pH年均值为4.31,酸雨污染比较严重;酸雨污染季节性明显,冬季酸雨出现频率高,影响范围广;酸雨的地域分布表现为以黔中为十字圆心,四个顶点遵义、都匀、安顺、凯里酸雨率高,而城市中心区酸雨污染较城郊严重;全省的酸雨污染主要是煤烟型污染。

2002'ACID RAIN POLLUTION IN GUIZHOU PROVINCE-A CIRCUMSTANCE ANALYSIS

In order to get accurate and timely information about the status quo of acid rain pollution and its developing trend in Guizhou Province so as to provide the scientific basis for controlling acid rain in the whole province, annual monitoring activities were carried out on the pH and ion composition of precipitation in the whole province from March, 2002 to Feb.,2003. The results showed that the pH value of precipitation throughout the province is 5.38, and a value of 4.31 was reported from some individual cities. This indicates that the pollution caused by acid rain is very serious. Acid rain pollution exhibits an obvious seasonal variation trend, i.e., the frequency of occurrence of acid rain is higher in winter than in other seasons, with a large influence scale. On account of its geographical distribution, the highest frequency of acid rain appears in central Guizhou (including Zunyi, Duyun, Anshun and Kaili). Acid rain pollution in the downtown areas of cities is more serious than in the suburbs. Acid rain pollution in the whole province is designated to coal smoke pollution.