Modeling Soil Carbon Dynamics in Northern Forests: Effects of Spatial and Temporal Aggregation of Climatic Input Data

PloS One
Lise DalsgaardJari Liski

Abstract

Boreal forests contain 30% of the global forest carbon with the majority residing in soils. While challenging to quantify, soil carbon changes comprise a significant, and potentially increasing, part of the terrestrial carbon cycle. Thus, their estimation is important when designing forest-based climate change mitigation strategies and soil carbon change estimates are required for the reporting of greenhouse gas emissions. Organic matter decomposition varies with climate in complex nonlinear ways, rendering data aggregation nontrivial. Here, we explored the effects of temporal and spatial aggregation of climatic and litter input data on regional estimates of soil organic carbon stocks and changes for upland forests. We used the soil carbon and decomposition model Yasso07 with input from the Norwegian National Forest Inventory (11275 plots, 1960-2012). Estimates were produced at three spatial and three temporal scales. Results showed that a national level average soil carbon stock estimate varied by 10% depending on the applied spatial and temporal scale of aggregation. Higher stocks were found when applying plot-level input compared to country-level input and when long-term climate was used as compared to annual or 5-year mean ...Continue Reading

References

Nov 25, 2003·Science·Roser MatamalaWilliam H Schlesinger
Jan 22, 2005·Nature·W KnorrE A Holland
Feb 19, 2008·Ecology Letters·Gerlinde B De DeynRichard D Bardgett
Jul 19, 2011·Science·Yude PanDaniel Hayes
Aug 27, 2014·Global Change Biology·Eric A DavidsonAdrien C Finzi
Sep 17, 2014·Proceedings of the National Academy of Sciences of the United States of America·Markus ReichsteinDennis D Baldocchi
Feb 1, 1992·Ecological Applications : a Publication of the Ecological Society of America·Edward B RastetterJohn E Hobbie

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Citations

Sep 6, 2018·The Science of the Total Environment·Daniel ZicheNicole Wellbrock
Oct 22, 2021·The Science of the Total Environment·Andreas HagenboRasmus Astrup
Jan 26, 2022·Ambio·Graciela M RuschHåkon Stokland

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Software Mentioned

ROMUL
R
Yasso07

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