Institute of Space and Earth Information Science,The Chinese University of Hong Kong,Hong Kong,China;
Department of Water Resources and Environment,Sun Yat-Sen University,GuangZhou 510275,China;
Department of Geosciences,University of Oslo,Norway;
Department of Geography and Resource Management,The Chinese University of Hong Kong,Hong Kong,China;
Department of Geography and Resource Management,The Chinese University of Hong Kong,Hong Kong,China;