Biochar and ash amendment effects on mine reclamation in the boreal forest

摘要

1.Both woodash and natural chars perform well 2.High-carbon wood ash is available commercially 3.Consistency a potential challenge 4.Natural (post-fire) chars work well 5.Supply limiting factor 6.Char transport minimal in first year when mixed in upper surface of tailings 7.Good potential for biochar in mine reclamation 8.Alternatives (top-soil, lignin sludge) degrade with time and require repeated applications 9.Dosage and characterization key in optimizing results.