Table 3 should be here
Under CUFV condition, q +max and |q |- maxshowed increasing trends with an increase in N of the flood wave, and their occurrence times were early and delayed, respectively (Fig. 6b1, Table 3). This was because the greater the N , the thinner the waveforms corresponded to the first and last peaks (Fig. 2), and the greater the rate of water level change under the same water level, the earlier the first peak appeared and the later the water level reached the initial water level. However, Q max decreased as N increased, and the occurrence time was delayed (Fig. 6b2, Table 3). Q max decreased by about 0.0275 m2 when N increased by 1.This was mainly because with the increase in N , the water traveled in and out of the aquifer more frequently. Part of the water returned to the stream in advance, resulting in a smaller range of water infiltration (i.e. smaller Q max), and a longer time taken to reach the maximum range (i.e. delayed Q max). It should be noted that previous studies (e.g. Gu et al., 2012) have shown that the surface water infiltration range is positively correlated withQ max. In addition, the change behaviors ofRT and Q max were generally similar, showing decreasing trends with N . The average RT decreased by about 0.675 days as N increased by 1.Thet R/t F showed a decreasing trend with N , due to the decrease in t Rand increase in t F (Fig. 6b2).t R decreased with N because the greater the N , the more frequently the water flowed back to the stream. This made part of the water return to the stream early, thereby shortened the return time of the whole water body.
Discussion