Effects of Simulated NH4+ Deposition on CO2 Fluxes in the Hulun Buir Meadow Steppe of Inner Mongolia, China
LIU Xingren, ZHANG Leiming, ZHANG Caihong, REN Jianqiang, LI Shenggong
Journal of Resources and Ecology . 2015, (3): 129 -138 .  DOI: 10.5814/j.issn.1674-764x.2015.03.001