张彦军, 郭胜利, 南雅芳, 李泽 . 黄土丘陵区小流域土壤碳氮比的变化及其影响因素[J]. 自然资源学报, 2012 , (7) : 1214 -1223 . DOI: 10.11849/zrzyxb.2012.07.012

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