The Biomass of Bark - An Almost Unknown Factor of Nutrient Sustainability
| Autor: | Riebler, M., Hayashi, M., Dietz, E., Rimmele, S., Borchert, H. |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
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| DOI: | 10.5071/29theubce2021-1ao.7.3 |
| Popis: | Current biomass equations for bark mostly provide differing results from 50-150 % for most physical parameters like bark dry-mass, dry and moist volume and dry-, moist- and space density, even when fed with the same initial values. However, an accurate determination of bark biomass is important for statements about nutrient sustainability, nutrient exports by logging and consequently for practical recommendations based on nutrient balancing. To address these issues, the Bavarian State Institute of Forestry conducted a research project to close knowledge gaps on bark biomass data, including thickness, density, volume, and mass of spruce bark. One of the aims was to choose the most suitable bark biomass equation for Bavarian conditions. Therefore, more than 2,750 bark samples were obtained from three spruce stands in an elaborate arrangement of height stages along the course of the stem using 20 mm hollow punches. Each sample was prepared carefully, and physical measurements were conducted by the method of immersion weighing. Available bark biomass equations were compared to Bavarian conditions and a new biomass equation was developed and statistically tested, based on field data of the BarkBiomass-project. Proceedings of the 29th European Biomass Conference and Exhibition, 26-29 April 2021, Online, pp. 40-44 |
| Databáze: | OpenAIRE |
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