Effects of freezing intensity on soil solution nitrogen and microbial biomass nitrogen in an alpine grassland ecosystem on the Tibetan Plateau, China

YANG Zhaoping, GAO Jixi, YANG Meng, SUN Zhizhong

Journal of Arid Land . 2016, (5): 749 -759 . DOI: 10.1007/s40333-016-0012-0