This study was supported by the National Natural Science Foundation of China (41701474, 41701467), the National Key Research and Development Plan of China (2016YFC0500205), the National Basic Research Program of China (2015CB954103) and the Key Laboratory for National Geograophy State Monitoring (National Administration of Surveying, Mapping and Geoinformation; 2017NGCM09). The authors are grateful to the anonymous reviewers for their constructive criticism and comments.
This study was supported by the National Natural Science Foundation of China (41701474, 41701467), the National Key Research and Development Plan of China (2016YFC0500205), the National Basic Research Program of China (2015CB954103) and the Key Laboratory for National Geograophy State Monitoring (National Administration of Surveying, Mapping and Geoinformation; 2017NGCM09). The authors are grateful to the anonymous reviewers for their constructive criticism and comments.