Responses of leaf nitrogen concentration and leaf area of Populus sibirica seedlings to nitrogen fertilization in a semi-arid area, Mongolia

Hanna Chang, Korea University, Seoul, Korea, Republic of (South), Seung Hyun Han, Korea University, Department of Environmental Science and Ecological Engineering, Seoul, Korea, Republic of (South) and Yowhan Son, Korea University, Department of Environmental Science and Ecological Engineering, Seoul, South Korea