Dr. Liu is a visiting scholar in our lab, and he is currently an associate professor in the School of Life Sciences at Northeast Normal University in China. He has a wide range of research interests and experiences, including investigating plant response to animal saliva and geographical variation of seed mass across Canadian Boreal Forest. His current work mainly focuses on the response of grassland ecosystem processes and functioning to global change (e.g. nitrogen deposition) and human activity (e.g. grazing).