降水化学特性的一种分类分析方法

在分析比较不同地区降水化学特性时，如果列出各种离子的具体数值，既显得繁琐又不容易得出结论。现提出一种简便方法，即先概括出几种最重要的降水化学特性，分别以字母代表，再把这些特性分成几个等级以数字表示，就能很直观方便地比较这些地区的降水化学特性。还利用权威观测资料，以上述方法具体比较了世界主要酸雨地区的降水化学特性。

A Classification Method to Analyze the Chemical Characteristics of Precipitation

In the analysis and comparing of the chemical characteristics of precipitation in different areas, if we list the concrete data of all ions, it is very complicated and difficult to get the conclusion. In this paper, we suggest a simplified method to do it. First, we summarize some most important characteristics with representative alphabets, then divide these characteristics into different levels with representative Arabic numerals. By using a group of this kind of alphebets and numerals, we can describe and compare the main chemical characteristics of precipitation in different area. Based on the generally used observed data, we analyse and compare the typical chemical characteristics of precipitation in the three main acid rain areas.