1. College of Geography and Environment, Shandong Normal University, Jinan, PR China
2. Shandong Provincial Territorial Spatial Ecological Restoration Center, Jinan, PR China
3. Department of Geography and Environmental Science, Hunter College of the City University of New York, New York, USA
4. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, PR China