HANDONG HE received his bachelor's degree in geographic information system from Henan University in 2006, his master's degree in cartography and geographic information system from Anhui Normal University in 2009, and his doctorate degree in cartography and geographic information system from Nanjing Normal University in 2014. He is currently an associate professor and a master’s degree Supervisor of Resources and Environment, Anhui Agricultural University. His major research fields are GIS spatiotemporal data structure and data model, geographic modeling.