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Table 4

Correlation coefficient between annual and seasonal NDVI and hydroclimatological factors in the downstream region for the period 1982–2014

		Spring	Summer	Autumn	Winter	Annual
1982–2014	Precipitation	−0.13	−0.47**	−0.18	0.01	−0.21
	Temperature	0.01	−0.08	0.24	0.25	0.05
	AET	0.34	0.28	0.31	0.23	0.09
	SMA	0.09	−0.03	−0.33	0.05	0.03
	SWE	0.12	0.15	0.03	0.36*	0.29
	GWA	–	–	–	–	–
	TWSA	–	–	–	–	–
1982–2000	Precipitation	−0.12	−0.24	−0.19	0.06	0.14
	Temperature	−0.10	0.17	0.44	0.58**	0.31
	AET	−0.05	0.44	0.26	0.46*	0.02
	SMA	0.09	−0.01	−0.21	0.11	0.15
	SWE	0.24	0.16	0.02	0.55*	0.48*
	GWA	–	–	–	–	–
	TWSA	–	–	–	–	–
2003–2014	Precipitation	−0.14	−0.74**	−0.12	−0.04	−0.52
	Temperature	0.31	0.17	−0.01	0.08	0.15
	AET	0.75**	0.39	0.36	0.30	0.42
	SMA	−0.04	−0.25	−0.54	−0.25	−0.36
	SWE	−0.10	−0.30	0.33	−0.54	−0.06
	GWA	0.26	0.13	0.06	−0.29	0.17
	TWSA	0.25	0.11	0.03	−0.29	0.15

		Spring	Summer	Autumn	Winter	Annual
1982–2014	Precipitation	−0.13	−0.47**	−0.18	0.01	−0.21
	Temperature	0.01	−0.08	0.24	0.25	0.05
	AET	0.34	0.28	0.31	0.23	0.09
	SMA	0.09	−0.03	−0.33	0.05	0.03
	SWE	0.12	0.15	0.03	0.36*	0.29
	GWA	–	–	–	–	–
	TWSA	–	–	–	–	–
1982–2000	Precipitation	−0.12	−0.24	−0.19	0.06	0.14
	Temperature	−0.10	0.17	0.44	0.58**	0.31
	AET	−0.05	0.44	0.26	0.46*	0.02
	SMA	0.09	−0.01	−0.21	0.11	0.15
	SWE	0.24	0.16	0.02	0.55*	0.48*
	GWA	–	–	–	–	–
	TWSA	–	–	–	–	–
2003–2014	Precipitation	−0.14	−0.74**	−0.12	−0.04	−0.52
	Temperature	0.31	0.17	−0.01	0.08	0.15
	AET	0.75**	0.39	0.36	0.30	0.42
	SMA	−0.04	−0.25	−0.54	−0.25	−0.36
	SWE	−0.10	−0.30	0.33	−0.54	−0.06
	GWA	0.26	0.13	0.06	−0.29	0.17
	TWSA	0.25	0.11	0.03	−0.29	0.15

*reflects significant trend at 95% confidence level.

**reflects significant trend at 99% confidence level.