基于SPEI和MI分析陕西省干旱特征及趋势变化
丁怡博1,徐家屯1,2,3,李亮1,2,3,蔡焕杰1,2,3(
),孙亚楠1,2,3
),孙亚楠1,2,3
Analysis of Drought Characteristics and Its Trend Change in Shaanxi Province Based on SPEI and MI
DING YiBo1,XU JiaTun1,2,3,LI Liang1,2,3,CAI HuanJie1,2,3(),SUN YaNan1,2,3
),SUN YaNan1,2,3
图4. 1958—2018年陕西省SPEI（a）和MI（b）时间序列M-K趋势检验
UF和UB为统计量序列,用以判断时间序列变化趋势以及检查突变点。置信区间临界值为0.05
Fig. 4. M-K trend test of SPEI (a) and MI (b) time series in Shaanxi Province from 1958 to 2018
UF and UB are statistical sequences used to determine trends in time series and to check for mutation points. The confidence interval threshold is 0.05
