Estimating biomass through transfer functions based on simulation model results: a case study for the Sahel.

Transfer functions are developed using the results of a process-simulation model called SAHEL. The transfer functions allow estimation of the depth of wetting of the soil profile and percolation in relation to the water content at field capacity (pF 2.5). In comparison with simple rainfall-biomass relations, application of transfer functions allow more accuracy in estimating biomass production at a less detailed scale. With the tranfer functions length of growing periods could be established more accurately, allowing for more precision in agro-ecological zoning methods.