Effects of grazing on soil microbial and biomass enzyme activities in Wugong Mountain, China

• Xiao-feng Xu, 
• De-kui Niu, 
• Xiao-min Guo, 
• Bang-liang Deng, 
• Gui-xiang Zhou, 
• Shu-li Wang, 
• Cong-fei Zhu, 
• Han-dong Luo