2YAN Ting-zhen1 , CHEN Xi-bo2 , HAN Guang-hui1 (1. Department of Urban and Environmental Sciences, Peking University, Beijing 100871, P. R. China,2. School of Humanities and Social Sciences, Dalian University of Technology, Dalian 116023, P.R. China).A HISTORICAL EXAMINATION ON LAND DESERTIFICATION IN NORTH CHINA[J].Chinese Geographical Science,2001,11(2):115-119. 被引量：1
