Ermittlung der Kohlenstoffspeicherung von Bäumen im Siedlungsgebiet am Beispiel der Stadt Bern
| Autor: | Oliver Gardi, Matthias Neuner, Guillaume Schaller, Sophia Mack |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Schweizerische Zeitschrift fur Forstwesen. 167:90-97 |
| ISSN: | 2235-1469 0036-7818 |
| DOI: | 10.3188/szf.2016.0090 |
| Popis: | Determining the carbon storage of trees in urban areas of the city of Bern While the amount carbon stored in tree biomass within Swiss forests is well studied, many uncertainties remain for estimating the carbon stored by trees in settlements. As a part of the project «Urban Green and Climate», various existing biomass models were compared with the measured aboveground biomass of 21 trees within the city of Bern. Traditional forestry models that estimate the biomass based on the diameter at breast height only have a limited capacity to accurately predict the biomass of single urban trees. Good predictions are however achieved by using a biomass model that additionally includes tree height (R2 = 0.96). This model was then used to determine the aboveground tree biomass at 179 sample plots in Bern. The carbon densities (t C/ha) of the plots were used to calibrate a model predicting the carbon storage in the aboveground biomass for urban tree populations based on LiDAR data (R2 = 0.84). A value of 14.9 ± 0.5 t C/ha was obtained for the developed area of Bern (i.e. areas without water, forest and agricultural land). With this model and available LiDAR data, the carbon stored in the aboveground biomass of trees outside forests and its change over time could be determined with high accuracy for all of Switzerland. |
| Databáze: | OpenAIRE |
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