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