TY - Journal of Arid Meteorology A1 - YANG Guoqing, WANG Jiazhen, SUN Mengmeng T1 - Spatial and Temporal Characteristics of Drought in Cangzhou of Hebei Province Based on Standardized Precipitation Index#br# Y1 - 2019-04-30 JF - Journal of Arid Meteorology JO - Journal of Arid Meteorology SP - 218 EP - 225 VL - 37 IS - 2 UR - http://www.ghqx.org.cn N1 - 10.11755/j.issn.1006-7639(2019)-02-0218 ER -