Attribution Analysis of Runoff Change in Min-Tuo River Basin based on SWAT model simulations, China.

Runoff variation trend Figure 2 shows the temporal runoff variations of river basins seleted from 1981 to 2014 based on SWAT simulations The runoff of the four river basins shows a decreasing trend over the 34 year period. the runoff reduction of Dadu River and Tuojiang River basins were relatively substantial, with gradients of −1.93 mm/a (R 2 = 0.17) and −1.90 mm/a (R 2 = 0.12), respectively, while the reduction of Qingyi River and Minjiang River basins was relatively less, which gradients −1.04 mm/a (R 2 = 0.09) and −1.16 mm/a (R 2 = 0.11), respectively.

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