Characteristics of Annual and Seasonal Precipitation Variation in the Upstream of Minjiang River, Southwestern China

Table 3

Values of b in linear regression analysis and Z and β in MK of UMR.

Region or station		Maoxian	Songpan	Wenchuan	Lixian	Heishui	Zipingpu	UMR
Spring	b	0.25	0.79	0.02	0.15	0.52	−0.43	0.35
	Z	0.81	2.08	−0.01	0.77	1.6	−0.73	1.6
	β (mm/10a)	1.81	7.73	−0.03	2.48	5.43	−3.23	3.45
Summer	b	−0.93	−0.35	−0.99	−0.57	−0.43	−2.37	0.58
	Z	−2.01	−0.88	−2.16	−0.95	−0.78	−2.31	−1.8
	β (mm/10a)	−8.71	−4.97	−9.02	−4.66	−4.14	−35.08	−8
Autumn	b	0.01	−0.37	−0.08	−0.38	−0.61	−1.10	−0.36
	Z	0.42	−0.69	0.3	−0.81	−1.51	−1.19	−1.11
	β (mm/10a)	1.03	−2.63	0.77	−2.75	−5.9	−9.11	−3.6
Winter	b	0	0.04	0.01	0.02	0.10	0.07	0.05
	Z	0.37	0.66	0	0.05	1.31	0.45	0.67
	β (mm/10a)	0.01	0.05	0	0	0.09	0.06	0.04
Annual	b	−0.67	0.11	−1.03	−0.84	−0.43	−3.83	−0.56
	Z	−1.22	0.39	−1.63	−0.7	−0.22	−2.57	−0.83
	β (mm/10a)	−7.13	2.27	−10	−4.44	−2.04	−50.96	−4.47

The significant values at 5% significance level.