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Variations of wetness/dryness across China during 1949–2014 in both space and time were investigated using the grid climate data of Time-Series (TS) Version 3.23. The Standardized Precipitation Evapotranspiration Index (SPEI) was used to evaluate the wetness and dryness conditions. Results indicated that the regions that experienced a drying/wetting tendency are similar in area, and the regions dominated...
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