Soil physicochemical properties and variations of nutrients and enzyme activity in the degrading grasslands in the upper reaches of the Heihe River, Qilian Mountains
QIN Jiahai, ZHANG Yong, ZHAO Yunchen, WANG Zhijiang, LI Caixia, GAO Haining
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY . 2014, (2): 335 -346 .  DOI: 10.7522/j.issn.1000-0240.2014.0041

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