Quantitative Estimation of the Impact of Precipitation and Land Surface Change on Hydrological Processes through Statistical Modeling

Table 3

Summary of annual runoff, precipitation, and runoff coefficient change point.

Period	Prechange period (1961–1985)	Postchange period (1986–2011)
Runoff
Mean (mm)	239.66	187.44
Standard deviation	130.25	109.24
Precipitation
Mean (mm)	781.61	749.87
Standard deviation	159.92	139.66
Runoff coefficient (slope)
Mean	0.29	0.25
Standard deviation	0.097	0.087