Effects of a conversion from grassland to cropland on the different soil organic carbon fractions in Inner Mongolia, China
QI Yuchun, DONG Yunshe, PENG Qin, XIAO Shengsheng, HE Yating, LIU Xinchao, SUN Liangjie, JIA Junqiang, YANG Zhijie
Journal of Geographical Sciences . 2012, (2): 315 -328 .  DOI: 10.1007/s11442-012-0929-y