Meteorological Drought, Hydrological Drought, and NDVI in the Heihe River Basin, Northwest China: Evolution and Propagation

Table 2

Information on the hydrological stations.

Sub-basin	Station	River	Longitude (°E)	Latitude (°N)	Catchment area (km^2)	Elevation (m)	Data period	Abrupt year
UHRB	Yingluoxia (Ylx)	Heihe River	100.18	38.82	10009	1700	1945–2012	1979
	Shuangshusi (Sss)	Hongshui River	100.83	38.32	578	2490	1957–2012	1974
	Wafangcheng (Wfc)	Dazhuma River	100.48	38.43	334	2440	1957–2012	1985
	Liyuanbao (Lyb)	Liyuan River	100.00	38.97	2641	1760	1956–2012	1976
MHRB	Zhengyixia (Zyx)	Heihe River	99.47	39.82	35634	1280	1957–2012	1984
	Lijiaqiao (Ljq)	Maying River	101.13	38.52	1205	2150	1957–2012	1986
	Shunhua (Sh)	Haichaoba River	100.72	38.59	191.8	1948	1957–2012	1995
	Suyoukou (Syk)	Suyou River	100.58	38.79	473.4	1565	1957–2012	1971

Abrupt change year was detected by the Pettitt test.