Spatiotemporal Variation of Runoff and Its Influencing Factors in the Yellow River Basin, China

Runoff is an important component of water resources and also the basis for regional development utilization. In order to explore new characteristics spatiotemporal variation runoff in whole Yellow River Basin, Basin from 1982 2012 was studied based on measured data 14 representative basins upper, middle, lower reaches Basin. The results showed that depth a decreasing trend, with decrease rate 0.3 mm/a. Among them, discharge decreased significantly (p < 0.01) 1999, 1.55 Most area basin has 0–10 mm, which relatively dry. higher (40–100 mm) gradually concentrating high-altitude steep-slope areas, while (0–10 increasing spreading low-altitude gentle-slope areas. After four sub-basins upper decreased, most middle few sub-basins, such as Qinhe Yiluo River, increased. increased, but magnitude change were consistent overall trend trend.