The two problems of salinization and desertification should be treated in different order according to regional situation. The FAO classification and notation principle by land unit,land use and added characters was used in the procedure.

• 指出对待盐渍化和沙化这两个问题，对不同区域应各有侧重，最后介绍了联合国粮农组织（FAO）的土地分类原则，用土地单元、土地利用类型及附加特性注记地类的方法。