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Table 7 Compensatory actions to replace harvested nutrients (i.e. application of ash or fertilizer) in forest biomass harvesting guidelines, as percent occurrence in 21 North American and 10 European jurisdictions or regions

From: Sustainable forest biomass: a review of current residue harvesting guidelines

Action or detaila North America Europe
Ash application   
 Rationale 10 70
 Ash typeb 5 50
 Nutrient concentration (minimum content) 0 30
 Contaminant concentration (maximum allowed) 0 60
 Ash application rate 0 60
 Appropriate sites 0 70
 Inappropriate sites or timing of application 0 70
Fertilizer application   
 Treatment is mentioned 19 80
 Appropriate sites 5 70
 Inappropriate sites 5 40
 Elements in fertilizer, or fertilizer application rate 5 40
  1. aSee Additional file 1: Table ST-9 for more details
  2. bAsh type: bottom, fly, granulated, hardened, etc.