Acta Agrestia Sinica
Effect of Expansion and Contraction of Grassland Soil in Northeastern China
TIAN Hong-yan, ZHOU Dao-wei, LI Zhi-xin, HOU Yu, LU Zhi-bo, LIU Xiao-dong, XU Ye
. 2003, (3): 261 -268 .  DOI: 10.11733/j.issn.1007-0435.2003.03.014