English Abstract In this study throughfall measurements of acidifying
components have been compared to deposition results from inference for
forests in The Netherlands. Corrections have been applied for the
contribution of neutral salts and sea salt to the throughfall samples.
Furthermore, corrections have been applied for the dry deposition of gases
and aerosols onto the funnels of the open samplers used for throughfall
measurements. The corrected throughfall measurements agreed better with the
inference results than the uncorrected fluxes for SO4, NH4 and total
potential acid. Corrections did have almost no effect on NO3 fluxes. The
correlation between corrected net throughfall fluxes (throughfall minus
fluxes measured in the open field) and dry deposition estimates from
inference was found to be significant for all fluxes. This reflects the
correlation between the spatial distribution of net throughfall and dry
deposition. Corrected throughfall fluxes were significantly higher for SO4
(45%) and NH4 (13%) and significantly lower for NO3 (33%), on the average.
The fluxes of total potential acid were found to be somewhat higher for the
corrected throughfall fluxes (14%), but not
significantly.