Response of Hydrological Drought to Meteorological Drought under the Influence of Large Reservoir

Table 2

Statistics of M-K for SSI and SPI on monthly time scales.

Time series	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Total series
	2.10	2.06	0.87	1.05	−0.78	−2.60	−0.74	1.13	1.82	0.89	1.85	2.38	3.23
	1.84	1.58	1.05	1.54	−1.02	−1.66	−0.15	1.38	1.95	1.13	1.28	2.57	2.19
SPI	0.78	0.95	0.98	0.89	−0.37	−0.34	0.39	1.57	1.18	−0.08	0.23	0.42	1.96

Note: a, b, and c mean the trend reached significant level of 0.1, 0.05, and 0.01, respectively.