Water samples were eollected from the lakes in East plain, Yungui plateau and Mengxing plateau since 1993.Mineralized degree were analyzed using volumetry and flame photometry.

• 1993年以来，对东部平原、云贵高原、蒙新高原等地区主要湖泊采取水样，进行了湖水矿化度分析，分析方法为容量分析法和火焰分光光度法。