中国干旱半干旱区的环境演变与荒漠化的成因
林年丰, 汤洁
Study on the Environmental Evolution and the Causes of Desertification in Arid and Semiarid Regions in China
LIN Nian-feng, TANG Jie
地理科学 . 2001, (1): 24 -29 .  DOI: 10.13249/j.cnki.sgs.2001.01.24