1961 - 2016年秦岭山区冷季积雪日数变化特征及其影响因子
李茜, 魏凤英, 雷向杰

The variation characteristics of snow cover days and its influencing factors in cold season in the Qinling Mountains from 1961 to 2016
Qian LI, Fengying WEI, Xiangjie LEI
图6 秦岭各区冷季积雪日数M-K统计量曲线(直线为α=0.05显著性水平临界值)
Fig.6 The M-K statistic curves of snow cover days in cold season in Zone Ⅰ (a), Zone Ⅱ (b), Zone Ⅲ (c), Zone Ⅳ (d) and Zone Ⅴ (e) in the Qinling Mountains (the straight line showing significance level critical value of α=0.05)