关键词: 土地类型, 呼伦贝尔草原, 淋溶黑钙土, 自然地带, 土地单元, 草甸草原, 干草原, 高平原, 丘岗地, 线叶菊

Abstract: The Hulun buir Steppe is located at a transitional belt between sub-humid and semi-arid regions in the temperate zone. It is one of the best pasturelands in China, large tracts of fertile arable virgin lands are also distributed there.The present article consists chiefly of two parts. In the first part, based on field observation and mapping, basic principles to classify land types in the Hulun buir Steppe are discussed, and consequently, 11 land systems and 39 land units are classified. In the second part, distrbution rules and models of land types in the Hulun buir Steppe are tentatively shown, and finally, natural features as well as land use trend for each land type are identified in a rather lengthy table.