Nutrient concentrations in stumps and coarse roots of Norway spruce, Scots pine and silver birch in Sweden, Finland and Denmark
| Autor: | Hans Petersson, Seija Kaakinen, Ylva Melin, Heljä-Sisko Helmisaari, Jens Peter Skovsgaard, Sofie Hellsten, Anna Saarsalmi, Cecilia Akselsson, Mikko Kukkola |
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| Rok vydání: | 2013 |
| Předmět: |
animal structures
010504 meteorology & atmospheric sciences Forest management chemistry.chemical_element Management Monitoring Policy and Law 01 natural sciences Nutrient Botany 0105 earth and related environmental sciences Nature and Landscape Conservation biology Phosphorus fungi Scots pine Forestry 04 agricultural and veterinary sciences 15. Life on land biology.organism_classification Agronomy chemistry visual_art Stump harvesting 040103 agronomy & agriculture visual_art.visual_art_medium 0401 agriculture forestry and fisheries Environmental science Bark |
| Zdroj: | Forest Ecology and Management. 290:40-48 |
| ISSN: | 0378-1127 |
| DOI: | 10.1016/j.foreco.2012.09.017 |
| Popis: | The objective of this study was to evaluate the concentrations of nutrients in stumps and coarse roots in Norway spruce, Scots pine and silver birch in Sweden, Finland and Denmark, and to assess how nutrient concentrations vary with site characteristics, stand age and root size. Concentrations of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg) and sodium (Na) in spruce, pine and birch stumps were assessed in eight sites across Scandinavia. Nutrient concentrations were higher in birch than in spruce and pine. In Sweden and Finland, the nutrient concentrations were generally higher at the southern sites than at the sites located in the northern part of the countries, except for P. For all nutrients, concentrations were significantly higher in the bark of the stump and roots than in the wood. Furthermore, nutrient concentrations increased significantly with decreasing root diameter. This study did not demonstrate any correlations with stand age. Further studies are needed to provide a broader picture of how the stump nutrient contents vary with site characteristics and forest management practices to provide a better foundation for nutrient balance calculations when setting up recommendations for stump removal. (C) 2012 Elsevier B.V. All rights reserved. (Less) |
| Databáze: | OpenAIRE |
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