Spatial and Temporal Characteristics of Summer Drought Anomaly and Its Causes Based on SPEI in Huang-Huai Area
AN Di, LI Dongliang, WANG Ziqiang,WU Yan, LV Xiang, YANG Xuan
Journal of Arid Meteorology . 2018, (4): 544 -553 .  DOI: 10.11755/j.issn.1006-7639(2018)-04-0544