1. College of Resources and Environment, NortheastAgriculturalUniversity, Harbin, Heilongjiang, China
2. Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Northeast Forestry University, Harbin, Heilongjiang, China
3. Department of Research and Education, Dalian Academy of Agricultural Sciences, Dalian, Liaoning, China
4. Province Key Laboratory of Cold Region Wetland Ecology and Environment Research, Harbin University, Harbin, Heilongjiang, China
5. Natural Resources and Ecology Institute, Heilongjiang Sciences Academy, Harbin, Heilongjiang, China