Ocena sprememb organske snovi v tleh na ploskvi Brdo glede na različne scenarije podnebnih sprememb z uporabo modela Yasso07
| Autor: | Primož Simončič, Klemen Eler, Hojka Kraigher, Milan Kobal |
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| Rok vydání: | 2014 |
| Předmět: |
razgradnja opada
Climate change Soil science chemistry.chemical_compound Forest ecology sestava opada Organic matter GE1-350 Slovenija forest ecology FORESTRY Total organic carbon chemistry.chemical_classification Soil organic matter Soil classification Forestry General Medicine General Chemistry SD1-669.5 udc:630*11(497.4Brdo)(045)=111 Environmental sciences ogljik v tleh chemistry Carbon dioxide Environmental science Soil horizon |
| Zdroj: | Acta Silvae et Ligni, Vol 103, Pp 21-34 (2014) Acta Silvae et Ligni, vol. 103, pp. 21-34, 2014. |
| ISSN: | 2335-3112 |
| Popis: | The forest soil can act as an important sink for CO2 and in that respect also appears in the national Kyoto reports, where a distinction is made between carbon accumulated in litter and organic soil horizons and carbon accumulated in mineral soil layers. There is a multitude of dynamic models of organic carbon (Corg) change in the soil particularly due to different environmental and anthropogenic factors. The purpose of this paper is the Yasso07 model application on the “Brdo” plot, which is part of the ICP Forest Level II plots of Slovenia. The Yasso07 model describes the decomposition of organic matter in the forest soil by dividing litter inputs into different components with varying decomposition rates. Here, the temporal change of soil Corg in various scenarios of future climate change (increase in air temperature, change in precipitation) was predicted. The difference between the measured amount and the model-predicted amount of Corg in the soil for the current climate on the Brdo plot is 6.4 t C ha-1 (88.6 t C ha-1 measured vs. 95.0 t C ha-1 predicted). Taking into consideration the climate change scenarios for Slovenia, Corg stock is expected to decrease in the future according to Yasso07 projections in all scenarios of climate change. The estimate of 100-year decrease of Corg is the largest for scenario, when large increase of both temperature and precipitation is expected (18.2%) and smallest when small temperature increase and precipitation decrease are predicted (9.3%). Assuming stable litter input, larger influence on Corg decrease was predicted for the temperature change compared to precipitation change. However, many uncertainties are included in model estimates ranging from litter input estimates, climate change uncertainties, climate-litter production feedbacks, starting value estimates, etc. The determination of the uncertainty of model calculations is a requirement for conducting simulations and their interpretation. |
| Databáze: | OpenAIRE |
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