[1
] School of Remote Sensing and Information Engineering, Wuhan University, Wuhan, China
[2
] State Key Laboratory of Information Engineering in Surveying, Mapping and Remote
Sensing, Wuhan University, Wuhan, China
[3
] National Centre for Geocomputation, National University of Ireland Maynooth, Maynooth,
Ireland
[4
] Sustainable Soils and Grassland Systems, Rothamsted Research, North Wyke, Okehampton,
UK