新疆气候“湿干转折”的信号和影响探讨
姚俊强, 毛炜峄, 陈静, 迪丽努尔·托列吾别克

Signal and impact of wet-to-dry shift over Xinjiang, China
YAO Junqiang, MAO Weiyi, CHEN Jing, DILINUER Tuoliewubieke
图4 不同时间尺度(1~24个月)SPEI指数变化(a)[8]、SPEI-12变化趋势(b)和突变检验(c)
Fig. 4 Temporal variation of the SPEI at different timescales (1 to 24 months) (a), trends (SPEI-12) (b) and abrupt change (SPEI-12) (c)