1960-2010年巴尔喀什湖流域干湿特征分析

张潇, 夏自强, 郭利丹, 鄢波

Analysis of aridity-wetness characteristics in the Balkhash Lake Basin from 1960 to 2010

ZHANG Xiao,XIA Ziqiang,GUO Lidan,YAN Bo

表1 3种指标的干湿等级划分标准

Table 1 The classification standard of three kinds of aridity-wetness indices

等级 SPI Z PDECI/% 类型 1 ≥2.00 ≥1.645 ≥75 重涝 2 1.50~1.99 1.037~1.645 50~75 中涝 3 1.00~1.49 0.842~1.037 25~50 偏涝 4 -0.99~0.99 -0.842~0.842 -25~25 正常 5 -1.49~-1.00 -1.037~-0.842 -50~-25 偏旱 6 -1.99~-1.50 -1.645~-1.037 -75~-50 中旱 7 <-2.00 <-1.645 <-75 重旱