Affiliation: | 1.School of Geography and Environment, Liaocheng University, No. 1, Hunan Road, Dongchangfu District, Liaocheng City, 252000, Shandong, China ;2.The Grand Canal Research Institute, Liaocheng University, Liaocheng, 252000, China ;3.School of Geography, Geomatics and Planning, Jiangsu Normal University, Xuzhou, 221116, China ; |