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藏北高寒草地土壤有机质化学组成对土壤蛋白酶和脲酶活性的影响
马书琴1, 汪子微2,3, 陈有超4, 鲁旭阳2,*()
Effect of soil organic matter chemical compositions on soil protease and urease activity in alpine grassland soils in Northern Xizang, China
MA Shu-Qin1, WANG Zi-Wei2,3, CHEN You-Chao4, LU Xu-Yang2,*()

图5. 藏北不同高寒草地类型土壤有机质化学组成主成分分析。

Fig. 5. Principal component analysis (PCA) of soil organic matter chemical components in alpine grassland soils in Northern Xizang, China.