AUTHOR=Braun Sabine , Ahrends Bernd , Alonso Rocio , Augustin Sabine , García-Gómez Hector , Hůnová Iva , Karlsson Per Erik , Karlsson Gunilla Pihl , Schmitz Andreas , Thimonier Anne 

TITLE=Nitrogen deposition in forests: Statistical modeling of total deposition from throughfall loads

JOURNAL=Frontiers in Forests and Global Change

VOLUME=Volume 5 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/forests-and-global-change/articles/10.3389/ffgc.2022.1062223

DOI=10.3389/ffgc.2022.1062223

ISSN=2624-893X

ABSTRACT=Nitrogen (N) gradient studies in some cases use N deposition in throughfall as measure of N deposition to forests. For evaluating critical loads of N, however, information on total N deposition is required, i.e. the sum of estimates of dry, wet and occult deposition. The present paper collects a number of studies in Europe where throughfall and total N deposition were compared in different forest types. From this dataset a function was derived which allows to estimate total N deposition from throughfall N deposition. At low throughfall N deposition values, the proportion of canopy uptake is high and thus the underestimation of total deposition by throughfall N needs to be corrected. At throughfall N deposition values >20 kg N ha 1 yr 1 canopy uptake is getting less important.