Trend Analysis of the Variation of Meteorological Drought in Loess Plateau of Gansu Province Based on Comprehensive Meteorological Drought Index
ZHANG Tiao-feng, ZHANG Bo, LIU Xiu-li, LI Xiao-ya, ZHAO Yi-fei, JIN Sheng-li
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY . 2012, (5): 1076 -1083 .  DOI: 10.7522/j.issn.1000-0240.2012.0131