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The practical datasets of micro-topography and temperature along the meandering right bank, including two segmentations of straight bank (SB1 and SB2) and one convex bank (CB3), were collected near the former site in July 2015 (Figure 3(b) and Table 1). Summer and winter in the thermal steady-state investigation are regarded as the two most favorable seasons when the steady temperature distributions are formed in streambed sediment (Schmidt et al. 2006; Anibas et al. 2009). The sediment temperature distributions of different test points could be applied to analyze the influence of bank curvatures on water exchange in the HZ. The riparian vegetation has some significant influence on hyporheic water exchange (Brunke & Gonser 1997; Anibas et al. 2012; Tan et al. 2016). Along the straight bank segmentations (SB1 and SB2), the riparian vegetation with two areas of 15 × 15 m2 were investigated, which included coverage rates and major floristics of arbor, shrub, and herb adjacent to the bank/water interface (Table 2). The major floristics in the two areas was almost similar, containing Gramineae and Compositae, Oleander as well as Willow. However, the riparian vegetation in SB1 accounted for larger coverage rates, and was significantly closer to the bank/water interface in comparison to the vegetation in SB2.

Table 2

Riparian vegetation distributions along the straight bank segmentations in July 2015

SectionsSB1SB2
Test points  
Distance (m)*  6.7 7.1 6.5 6.1 6.1 1.3 0.6 2.6 2.3 
Coverage rates (%) Herb 60 80 
Shrub 8.2 10.5 
Arbor 1.5 6.5 
Major floristics Herb Gramineae and Compositae Gramineae and Compositae 
Shrub Oleander Oleander 
Arbor Willow Willow 
SectionsSB1SB2
Test points  
Distance (m)*  6.7 7.1 6.5 6.1 6.1 1.3 0.6 2.6 2.3 
Coverage rates (%) Herb 60 80 
Shrub 8.2 10.5 
Arbor 1.5 6.5 
Major floristics Herb Gramineae and Compositae Gramineae and Compositae 
Shrub Oleander Oleander 
Arbor Willow Willow 

*Indicating the measured distances from the riparian vegetation boundary to the bank/water interface.

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