1960-2015年青海三江源地区降水时空特征

刘晓琼,吴泽洲,刘彦随,赵新正,芮旸,张健

Spatial-temporal characteristics of precipitation from 1960 to 2015 in the Three Rivers' Headstream Region, Qinghai, China

LIU Xiaoqiong,WU Zezhou,LIU Yansui,ZHAO Xinzheng,RUI Yang,ZHANG Jian

表4 三江源区年均降水量序列IMF分量周期、相关系数及方差贡献率

Tab. 4 The period, correlation coefficient and the variance contribution rate of the annual precipitation in Three Rivers’ Headstream Region during 1960-2015

周期(a) 相关系数 方差贡献率(%) 澜沧江 黄河 长江 澜沧江 黄河 长江 澜沧江 黄河 长江 IMF1 2.88 2.84 2.44 0.83*** 0.79*** 0.75*** 72.59 59.60 57.34 IMF2 5.03 8.60 4.19 0.41*** 0.47*** 0.49*** 16.21 20.19 18.58 IMF3 13.56 14.29 7.69 0.23** 0.25** 0.30*** 6.65 9.65 5.71 IMF4 27.59 33.33 32.00 0.22** 0.32*** 0.45*** 3.70 5.53 13.98 IMF5 32.00 66.67 100 0.20* -0.04 0.32*** 0.08 2.25 0.18 RES / / / 0.17* 0.14 0.33*** 0.78 2.77 4.21