Climatic change of terrestrial surface humid index and its impact factors over the source region of three rivers in recent 50 years
YAO Yubi, YANG Jinhu, YUE Ping, LU Dengrong
Ecology and Environmental Sciences . 2011, (11): 1585 -1593 .  DOI: 10.16258/j.cnki.1674-5906(2011)11-1585-09