ANALYSIS OF HUMAN_INDUCED STEPPE DEGRADATION BASED ON REMOTE SENSING IN XILIN GOLE, INNER MONGOLIA, CHINA
CAO Xin, GU Zhi_Hui, CHEN Jin, LIU Jin, SHI Pei_Jun
Chin J Plant Ecol . 2006, (2): 268 -277 .  DOI: 10.17521/cjpe.2006.0036