讨论了城市土地定级的因素及各因素作用于土地级别的影响程度；
The factors affected the land gradation and their degrees are discussed, the models are difined, and an example of the land gradation is given.
土地级别的高低由多种因素决定，地貌和地质基础是其中的两个重要因素。
The grade of land is decided by many factors. The land height and geological basis are two important factors.
指出了土地级别调整的关键技术，总结了土地级别的分布规律，分析了其形成原因。
The key methods to adjust the land grades is presented, the distribution regularity and characteristic of land grades in Chongqing city is outlined and the causes to be formed is analysised.
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