Parameters

Uncertainties Relative contribution

Soil labile P

5.7 ×10-2 kg/ha 0.08

Annual runoff

0.23 kg/ha 0.34

Eroded sediment

0.21 kg/ha 0.31

Fertilizer P

6.7×10-2 kg/ha 0.09

RO/PT

0.11 kg/ha 0.16
Relative contribution of 1.00 is the sum of all the contributions by each parameter.
Table 6: Uncertainties of input parameters in prediction of P loss.