作者机构:[1]Spatial Information Technology and Sustainable Development Research Center, School of Geoscience and Info-Physics, Central South University, Changsha 410083, China, [2]School of Resource Environment and Tourism Management, Hengyang Normal University, Hengyang 421008, China
相关基金:Projects(41171326, 40771198) supported by the National Natural Science Foundation of China; Project(08JJ6023) supported by the Natural Science Foundation of Hunan Province, China