Modelling Furrow Irrigation-Induced Erosion on a Sandy Loam Soil in Samaru, Northern Nigeria

Table 4

Results of sensitivity analysis.

Variables	Original; values of variables	10%; increase in values of variables	Original; soil; erosion; value	Soil erosion response to 10% increase of values of variables	Change; in soil erosion	Changes; in variables’; values	Sensitivity coefficient (S.C.)
Shear stress	25.783	28.361	0.981	1.080	−0.098	2.5783	−0.0381
Furrow length	90	99	0.981	0.922	0.0600	9	0.00663
Top width of flow	0.653	0.718	0.981	0.922	0.0600	0.0653	0.91415
Infiltration rate	24.776	27.254	0.981	0.892	0.0900	2.4776	0.036
Stream size	0.0025	0.003	0.981	1.013	−0.032	0.00025	−128.03
Erodibility factor	0.02	0.022	0.981	0.941	0.0404	0.002	20.1969
Time of flow	481.8	529.98	0.981	1.003	−0.0212	48.18	−0.0004