Altered Plant Litter and Microbial Composition Lead to Topsoil Organic Carbon Loss Over a Shrub-encroachment Gradient in an Inner Mongolia Grassland

Luhong Zhou1, He Li2, Haihua Shen2, Yunping Xu3, Yinghui Wang4, Aijun Xing1 and Jingyun Fang1, (1)IB Institute of Botany, Chinese Academy of Sciences, Beijing, China, (2)Institute of Botany, Chinese Academy of Sciences, Beijing, China, (3)Shanghai Ocean University, College of Marine Sciences, Shanghai, China, (4)Peking University, Beijing, China