Erosion and Sediment Transport: Finding Simplicity in a Complicated Erosion Model - Environmental Modelling: Finding Simplicity in Complexity - page 253

Table 15.3 Predicted hillslope erosion rates averaged across each transect (t ha − 1 yr − 1 ).

MIRSED predictions

Median erosion rate from transect Maximum erosion rate from transect

(t ha − 1 yr − 1 ) (t ha − 1 yr − 1 )

Site 11 Mean Median Slope disbns Mean Median Slope disbns

Herefordshire 1.68 1.37 1.83 11.31 4.16 37.09

Beds and Cambs 0.41 0.39 0.45 2.08 2.06 2.52

Dorset 2.28 1.89 2.61 21.03 16.21 81.52

Gwent 1.92 1.48 2.43 13.60 13.36 67.98

Kent 0.83 0.80 1.08 3.05 3.02 10.45

Norfolk east 0.68 0.68 0.35 1.71 1.71 5.46

Nottinghamshire 0.42 0.42 0.55 1.35 1.35 5.79

Shropshire 0.88 0.83 1.49 1.77 1.74 6.64

Somerset 0.91 0.82 1.05 4.11 3.90 14.20

Staffs 0.86 0.81 1.14 1.83 1.80 12.04

Sussex west 1.54 1.06 1.99 10.59 3.72 49.52

1 Based on a bulk density of 1.4 g cm − 3

12

10

8

Mean slopes (error bars
describe range)
Observed mean soil
erosion rate

6

4

2

0

Site

Figure 15.4 Ranges of predicted average hillslope soil erosion generated using mean slopes, against observed data: Average overflight
survey 1982-1984 (t ha − 1 yr − 1 ).