作者机构:[1]Key Laboratory of Agri-informatics, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China, [2]Remote Sensing Technology Center, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, P,R. China
相关基金:This research was financially supported by the Non-Profit Research Grant of the National Administration of Surveying, Mapping and Geoinformation of China (201512028), and the National Natural Science Foundation of China (41271112). We thank the anonymous reviewers for their comments and suggestions. We also express our gratitude to the Remote Sensing Technology Center fellows of the Heilongjiang Academy of Agricultural Sciences, China for providing the essential crop field samples.