Table 2. Deposition (open field) and storage of nutrients in the top 100 cm of the soil profile.

Deposition
Nutrient

Beech
  (kg ha−1 yr−1)
Spruce
  (kg ha−1 yr−1)
Soil storage to
a 1-m depth
(kg ha−1)
 N 20 (17) 30 (25) 6000
 P 0.5 (0.2) 0.7 (0.3) 300
 K 5 (2) 7 (3) 250
 Ca 8 (2.7) 10 (4) 400
 Mg 1.0 (0.7) 1.2 (1.0) 150
Amounts were based on typical amounts in the region as assessed at Level II plot 802 Heidelberg run by Forstliche Versuchs- und Forschungsanstalt Baden-Württemberg.