Impact of atmospheric deposition on the status of planted Norway spruce stands: a comparative study between sites in southern Sweden and the northeastern Czech Republic

acid deposition acidez acidification acidity air pollution arbre forestier bosques chemical composition chimie du sol composition chimique czech republic damage europa europe feuille foliage forest decline forest pathology forest soils forest trees forests heavy metals hojas humus leaves metales pesados mycorrhizae ph del suelo ph du sol picea abies soil chemistry soil ph suecia suelo forestal sweden