Variations in Evapotranspiration of Soil Moisture in Gansu Loess Plateau in the Recent 40 Years
YAO Xiao-ying, PU Jin-yong, WANG Cheng-hai, SONG Lian-chun, DEN Zhen-yong, FENG Jian-ying, LIU Xiao-qiang
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY . 2007, (1): 126 -130 .  DOI: 10.7522/j.issn.1000-0240.2007.0019