1. State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment Northeast Normal University Changchun China
2. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology Chinese Academy of Sciences Changchun China
3. Chongqing Institute of Quality and Standardization Chongqing China
4. Key Laboratory of Vegetation Ecology of the Ministry of Education, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Institute of Grassland Science Northeast Normal University Changchun China
5. Ecology and Biodiversity Group, Department of Biology Utrecht University Utrecht The Netherlands