Table 2 Gradient divisions for three flooding factors at monitoring sections in the Lower Tarim River.

From: How to Regenerate and Protect Desert Riparian Populus euphratica Forest in Arid Areas

Grade

Flooding frequency

Flooding duration (day)

Flooding intensity (m3/s)

1

once in one or two years

5–10

20–25

2

once or twice per year

10–15

25–30

3

2–3 times per year

15–20

30–35

4

4–5 times per year

>20

35–40