Deposition of nitrogen

Both dry and wet deposition occurs but only mineral N can optionally be accounted for (see Deposition). Ammonium depositions to the soil is given as:

                             (5.1)

where p_dry, p_fNH4,Dry, p_cwet and p_fNH,Wet are site-specific parameters and q_in is the water infiltration rate. Similarly the nitrate deposition is given as:

                (5.2)

where the parameters are the same as for the ammonium deposition rate.

A direct uptake of nitrogen by the leaf from the atmosphere may also be specified as:

                                                          (5.3)

where p_dry,l is the plant specific deposition rate per unit of leaf area and A_l is the leaf area index.