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The collection of precipitation and throughfall (precipitation passing through the canopy) enables the calculation of fluxes for each site. Interception by the canopy is approximately 21% for broadleaved trees and 53% for coniferous species leading to a much higher water flux for the oak (66%) compared to the conifers (47%).
Significant declines in sulphur deposition and acidity have been detected at the sites.
Total Sulphur deposition flux across the Level 2 plots
Nitrogen deposition shows a decline of ammonium in some areas in the UK but no change in nitrate. A significant increase in dissolved organic nitrogen in rainfall, throughfall and soil solution has been detected across many sites.
Total Nitrogen deposition flux across the Level 2 plots
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