7440-44-0 1 Carbon 1 Journal Article 1 Norway spruce (Picea abies) 1 Research Support, Non-U.S. Gov't 1 Soil 1 boreal forest 1 mehr ... carbon and nitrogen stock downy birch (Betula pubescens) 1 ectomycorrhiza 1 fungal guild 1 tree species effects 1 weniger ...