Analysis of Drought Spatial-temporal Characteristics Based on SPEI in Eastern Region of Gansu in Recent 50 Years
Bo ZHANG, Yao-zong ZHANG, Pei-gui REN, Dong WANG, Yi-fei ZHAO, Shang-wu YANG
SCIENTIA GEOGRAPHICA SINICA ›› 2015, Vol. 35 ›› Issue (8) : 999-1006.
Analysis of Drought Spatial-temporal Characteristics Based on SPEI in Eastern Region of Gansu in Recent 50 Years
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