1. World Map of the Status of Human-Induced Soil Degradation: An Explanatory Note;Oldeman,1991
2. LANDSAT IMAGES REVEAL TRENDS IN THE AEOLIAN DESERTIFICATION IN A SOURCE AREA FOR SAND AND DUST STORMS IN CHINA'S ALASHAN PLATEAU (1975-2007)
3. Nutrient cycle in main types of forests at Huoditang Forest Region in the Qinling Mountains;Zhang;J. Northwest For. Coll.,1996
4. Land degradation, famine, and land resource scenarios in Ethiopia;Hurni,1993
5. Environmental Degradation in China under Mao and Today: A Comparative Reflection