1. Institute of Agricultural Remote Sensing and Information Technology Application, College of Environmental and Resource Sciences; Zhejiang University; Hangzhou 310058 China
2. INRA, Unité InfoSol; 45075 Orléans France
3. UMR SAS, INRA, Agrocampus Ouest; 35042 Rennes France
4. College of Information Engineering; Tarim University; Alar 843300 China
5. Key Laboratory of Spectroscopy Sensing, Ministry of Agriculture; Hangzhou 310058 China