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Modelling peatland development in high-boreal Quebec, Canada, with DigiBog_Boreal.
- Source :
-
Ecological Modelling . Apr2023, Vol. 478, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- • DigiBog was modified to consider snow cover and short growing seasons. • The model performs well, with error in simulated peat thickness as low as 26 cm. • Simulated peat accumulation is sensitive to water stored on the peat surface. DigiBog is a numerical model that simulates peat accumulation in temperate peatlands. Here, we modify DigiBog for boreal peatlands (DigiBog_Boreal) by accounting for snow cover, short growing seasons and groundwater exchanges between the peat and the aquifer. DigiBog_Boreal is then used to replicate ∼6500 years of peat accumulation at two high boreal latitude peatlands in Quebec, Canada. DigiBog_Boreal was driven with a weather generator and climate models, while peat cores from the sites were used to develop initial conditions and calibrate DigiBog_Boreal. Our results demonstrate that DigiBog_Boreal can replicate well peat thickness and age-depth profiles but cannot produce long-term fluctuations in water-table depths. Here, a possible explanation for DigiBog_Boreal's underperformance is the stability in the climatic drivers and less likely the new model developments. The results also indicate that peat decomposition and accumulation in DigiBog_Boreal are sensitive to water stored on the peat surface. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03043800
- Volume :
- 478
- Database :
- Academic Search Index
- Journal :
- Ecological Modelling
- Publication Type :
- Academic Journal
- Accession number :
- 161815796
- Full Text :
- https://doi.org/10.1016/j.ecolmodel.2023.110298