1. School of Geography and Environment, Jiangxi Normal University, Nanchang, Jiangxi, P. R. China
2. Nanchang Base of International Centre on Space Technologies for Natural and Cultural Heritageunder the Auspices of UNESCO, Nanchang, Jiangxi, P. R. China
3. Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi, P. R. China