Detecting Runoff Variation of the Mainstream in Weihe River

Table 3

Results of runoff trend and persistence tests of 1919–1989 and 1990–2011 (throughout the study period).

	1919–1989	1919–2011
Trends	0.442	−2.828
	Insignificantly upward	Significantly downward
Persistence	0.978	0.762
	Positive	Positive