This function calculates the indicator for the soil sealing calculated by calc_sealing_risk
ind_sealing(D_SE, B_LU_BRP)
(numeric) The value of soil sealing calculated by calc_sealing_risk
(numeric) The crop code (gewascode) from the BRP
The evaluated score for the soil function to avoid crop damage due to sealing of surface. A numeric value between 0 and 1.