1. State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China
2. School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 501275, China
3. Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
4. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China
5. Guangdong Environmental Monitoring Center, Guangzhou 510080, China
6. Tokyo University of Agriculture and Technology, Tokyo 183 8509, Japan