Litter stocks and chemical quality of natural birch forests along temperature and precipitation gradients in eastern Inner Mongolia, China
CHEN Sha-Sha, LIU Hong-Yan, GUO Da-Li
Chin J Plant Ecol . 2010, (9): 1007 -1015 .  DOI: 10.3773/j.issn.1005-264x.2010.09.001