不同草原类型土壤有机碳和全氮的差异  

Soil Organic Carbon and Total Nitrogen Content in Different Steppes.

作　　者：高安社[1] 郑淑华[1] 赵萌莉[1] 韩国栋[1] 

机构地区：[1]内蒙古农业大学生态环境学院

出　　处：《中国草地》2005年第6期44-48,63,共6页Grassland of China

基　　金：教育部"青年教师教学科研奖励计划"和骨干教师项目;国家自然科学基金项目(30060056;30360022);内蒙古科技攻关项目

摘　　要：对典型草原和荒漠草原的土壤有机碳(OC)和全氮(N)进行的比较分析结果表明:两种草原土壤SOC和TN含量差异显著,且典型草原的SOC和TN含量高于荒漠草原;在0～20cm土层内,两种草原的SOC和TN含量随土壤深度的增加呈下降趋势.典型草原的气候、植被及土壤质地状况优于荒漠草原,可能是导致上述结果的可能原因.Soil organic carbon（SOC） and total nitrogen content（TN） in the typical steppe and desert steppe were compared. The results are as follows： SOC and TN content in the two steppe have obvious difference , moreover, SOC and TN content in the typical steppe are higher than that in desert steppe;In the layer of 0-20 cm, SOC and TN content in both steppe all has a tend to degrade as the soil get deep. This results have close relationship with the climate, vegetation as well as soil conditions and other nature conditions.

关 键 词：典型草原 荒漠草原 土壤有机碳 全氮 

分 类 号：S812.2[农业科学—草业科学]