Nitrogen pools and C:N ratios in well-drained Nordic forest soils related to climate and soil texture

Relationships between soil nitrogen (N) pools, climate, and soil-texture class in well-drained Nordic forest soils may be used for upscaling of regional N budgets. Total soil N pools and C:N ratios were studied in forest soils in Fennoscandia and Denmark (55-70°N, 5-27°E) in boreal pine and spruce forest, boreal mixed forest, and nemoral forest types (beech, oak, mixed). Total N pools in 198 forest soil profiles were calculated from horizon thickness, bulk density, stone content and nitrogen concentration and related to climate and soil texture through multiple linear regressions. The top 100 cm of the mineral soil and the organic layer were included. C:N ratios were calculated from C and N concentrations in…

• NM
  Nordisk Ministerråd
• SL
  Sveriges Lantbruksuniversitet
• NM
  Norges Miljø- og Biovitenskapelige Universitet