Ash fertilization in a clearcut and in a Scots pine stand in central Sweden: effects on soil-water and soil chemistry coupled to laboratory leachings of six ash products

abonos agua del suelo arbre forestier ashes cendre ceniza chimie du sol ciencias forestales corta a hecho coupe rase eau du sol engrais fertilisation fertilizer application fertilizers forest trees foresterie forestry pinus sylvestris soil chemistry soil water suecia sweden