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Gao Anshe,Zheng Shuhua,Zhao Mengli,Han Guodong.Soil organic carbon and total nitrogen content in different stepps[J].Grassland of China,2005,27(6):44-48. [27]高安社;郑淑华;赵萌莉;韩国栋.;不同草原类型土壤有机碳和全氮的差异[J]