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内蒙古锡林郭勒地区３类主要草原土壤有机碳含量呈现规律性变化，其顺序为：黑钙土＞栗钙土＞棕钙土。同时，有机碳沿土壤剖面自上而下逐渐降低，且主要分布在０～１５ｃｍ处。草甸草原植被下的黑钙土不同层次有机碳含量因农垦分别损失３４％～３８％，损失主要发生在０～３５ｃｍ处。分析结果表明，放牧强度在短时期内对典型草原植被下的栗钙土有机碳含量没有显著影响。
The contents of soil organic carbon in three types of grasslands in Xilinguole area of Inner Mongolia showed regular changes: Chernozem> Chestnut soil> Calcareous soil. At the same time, the organic carbon decreased along the soil profile from top to bottom, and mainly distributed in the 0 ~ 15cm. The contents of organic carbon in different layers of Chernozem under meadow steppe were 34% -38%, respectively, due to agricultural reclamation. The loss mainly occurred at 0-35cm. The results showed that grazing intensity had no significant effect on organic carbon content of chestnut soil under typical steppe vegetation in a short period of time.