NationalEngineeringResearchCenterforInformationTechnologyinAgriculture;
Beijing100089;
ER.China;
CollegeofBasicSciencesandTechnology;
BeijingForestryUniversity;
Beijing100083;
ER.China;
ResearchInstituteofForestResourceInformationTechniques;
ChineseAcademyofForestry;
Beijing100091;
P.R.China;