Wind and snow damage in a thinning and fertilization experiment in Picea abies in southern Sweden

abonos abonos nitrogenados abonos np aclareo age altitud altitude arbre crecimiento croissance damage edad engrais engrais np fertilizers growth latitud latitude neige nieve nitrogen fertilizers nitrogen phosphorus fertilizers picea abies rendement rendimiento site factors snow stand characteristics stand density suecia sweden thinning trees wind damage yields