Regularity of Vegetation Coverage Changes in the Tibetan Plateau  over the Last 21 Years
LIANG Si-hai, CHEN Jiang, JIN Xiao-mei, WAN Li, GONG Bin
Advances in Earth Science . 2007, (1): 33 -40 .  DOI: 10.11867/j.issn.1001-8166.2007.01.0033