Effects of Air Temperature and Precipitation on Soil Moisture on the Qinghai-Tibet Plateau during the 2015 Growing Season

Table 2

The lag correlation coefficients between middle and deep layers’ SM and precipitation.

	Lag (days) (cm)	1	2	3	5	7
Naqu	30	0.23	0.26	0.29	0.35
	40	0.14	0.17	0.19	0.23	0.24
	50	0.12	0.13	0.14	0.16	0.18
Zedang	30	0.31	0.33	0.32	0.36
	40	0.28	0.31	0.3	0.3	0.35
	50	0.25	0.28	0.28	0.29	0.35
Jiali	30	0.4
	40	0.35
	50	0.2	0.24	0.25	0.28

∗∗ indicates that the correlation coefficients are statistically significant at the 99.9% level (Student’s t-test). Bold numbers indicate the maximum correlation coefficients.