Number and ion composition of different chemical types of lakes and pans by dominant ions and by Valyashko classification, and the amount of overlap between the two methods.

Number and ion composition of different chemical types of lakes and pans by dominant ions and by Valyashko classification, and the amount of overlap between the two methods.

基于优势离子分类与瓦利亚什科分类（Valyashko classification）两种方法划分的不同化学类型湖泊与盐沼盆的数量及离子组成，以及两种分类方法间的重叠程度。