1. School of Ecology and Environment, Inner Mongolia University, Huhhot 010022, China
2. College of Geographical Science, Inner Mongolia University, Huhhot 010022, China
3. College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
4. Inner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment, Inner Mongolia University, Huhhot 010022, China
5. Center for Applied Mathematics Inner Mongolia, Huhhot 010021, China
6. College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
7. School of International Economics and Management, Beijing Technology and Business University, Beijing 100048, China
8. lnner Mongplia Eoological Envitorment Science Research Institute Company Limited, Huhhot 010022, China