A new method for estimating carbon dioxide emissions from drained peatland forest soils for the greenhouse gas inventory of Finland
In peatlands drained for forestry, the soil carbon (C) or carbon dioxide (CO2) balance is affected by both (i) higher heterotrophic CO2-C release from faster decomposing soil organic matter (SOM) and (ii) higher plant litter C input from more vigorously growing forests. This balance and other greenh...
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Copernicus Publications
2023
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00068946 2023-10-09T21:54:26+02:00 A new method for estimating carbon dioxide emissions from drained peatland forest soils for the greenhouse gas inventory of Finland Alm, Jukka Wall, Antti Myllykangas, Jukka-Pekka Ojanen, Paavo Heikkinen, Juha Henttonen, Helena M. Laiho, Raija Minkkinen, Kari Tuomainen, Tarja Mikola, Juha 2023-09 electronic https://doi.org/10.5194/bg-20-3827-2023 https://noa.gwlb.de/receive/cop_mods_00068946 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067352/bg-20-3827-2023.pdf https://bg.copernicus.org/articles/20/3827/2023/bg-20-3827-2023.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-20-3827-2023 https://noa.gwlb.de/receive/cop_mods_00068946 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067352/bg-20-3827-2023.pdf https://bg.copernicus.org/articles/20/3827/2023/bg-20-3827-2023.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/bg-20-3827-2023 2023-09-24T23:21:37Z In peatlands drained for forestry, the soil carbon (C) or carbon dioxide (CO2) balance is affected by both (i) higher heterotrophic CO2-C release from faster decomposing soil organic matter (SOM) and (ii) higher plant litter C input from more vigorously growing forests. This balance and other greenhouse gas (GHG) sinks and sources in managed lands are annually reported by national GHG inventories to the United Nations Climate Change Convention. In this paper, we present a revised, fully dynamic method for reporting the CO2 balance of drained peatland forest soils in Finland. Our method can follow temporal changes in tree biomass growth, tree harvesting and climatic parameters, and it is built on empirical regression models of SOM decomposition and litter input in drained peatland forests. All major components of aboveground and belowground litter input from ground vegetation as well as live trees and trees that died naturally are included, supplemented by newly acquired turnover rates of woody plant fine roots. Annual litter input from harvesting residues is calculated using national statistics of logging and energy use of trees. Leaching, which also exports dissolved C from drained peatlands, is not included. The results are reported as time series from 1990–2021 following the practice in the GHG inventory. Our revised method produces an increasing trend of annual emissions from 0.2 to 2.1 t CO2 ha−1 yr−1 for the period 1990–2021 in Finland (equal to a trend from 1.4 to 7.9 Mt CO2 yr−1 for the entire 4.3 Mha of drained peatland forests), with a statistically significant difference between the years 1990 and 2021. Across the period 1990–2021, annual emissions are on average 1.5 t CO2 ha−1 yr−1 (3.4 Mt CO2 yr−1 for 2.2 Mha area) in warmer southern Finland and −0.14 t CO2 ha−1 yr−1 (−0.3 Mt CO2 yr−1 for 2.1 Mha area) in cooler northern Finland. When combined with data on the CO2 sink created by the growing tree stock, in 2021 the drained peatland forest ecosystems were a source of 1.0 t CO2 ha−1 yr−1 (2.3 Mt CO2 ... Article in Journal/Newspaper Northern Finland Niedersächsisches Online-Archiv NOA Biogeosciences 20 18 3827 3855 |
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article Verlagsveröffentlichung Alm, Jukka Wall, Antti Myllykangas, Jukka-Pekka Ojanen, Paavo Heikkinen, Juha Henttonen, Helena M. Laiho, Raija Minkkinen, Kari Tuomainen, Tarja Mikola, Juha A new method for estimating carbon dioxide emissions from drained peatland forest soils for the greenhouse gas inventory of Finland |
topic_facet |
article Verlagsveröffentlichung |
description |
In peatlands drained for forestry, the soil carbon (C) or carbon dioxide (CO2) balance is affected by both (i) higher heterotrophic CO2-C release from faster decomposing soil organic matter (SOM) and (ii) higher plant litter C input from more vigorously growing forests. This balance and other greenhouse gas (GHG) sinks and sources in managed lands are annually reported by national GHG inventories to the United Nations Climate Change Convention. In this paper, we present a revised, fully dynamic method for reporting the CO2 balance of drained peatland forest soils in Finland. Our method can follow temporal changes in tree biomass growth, tree harvesting and climatic parameters, and it is built on empirical regression models of SOM decomposition and litter input in drained peatland forests. All major components of aboveground and belowground litter input from ground vegetation as well as live trees and trees that died naturally are included, supplemented by newly acquired turnover rates of woody plant fine roots. Annual litter input from harvesting residues is calculated using national statistics of logging and energy use of trees. Leaching, which also exports dissolved C from drained peatlands, is not included. The results are reported as time series from 1990–2021 following the practice in the GHG inventory. Our revised method produces an increasing trend of annual emissions from 0.2 to 2.1 t CO2 ha−1 yr−1 for the period 1990–2021 in Finland (equal to a trend from 1.4 to 7.9 Mt CO2 yr−1 for the entire 4.3 Mha of drained peatland forests), with a statistically significant difference between the years 1990 and 2021. Across the period 1990–2021, annual emissions are on average 1.5 t CO2 ha−1 yr−1 (3.4 Mt CO2 yr−1 for 2.2 Mha area) in warmer southern Finland and −0.14 t CO2 ha−1 yr−1 (−0.3 Mt CO2 yr−1 for 2.1 Mha area) in cooler northern Finland. When combined with data on the CO2 sink created by the growing tree stock, in 2021 the drained peatland forest ecosystems were a source of 1.0 t CO2 ha−1 yr−1 (2.3 Mt CO2 ... |
format |
Article in Journal/Newspaper |
author |
Alm, Jukka Wall, Antti Myllykangas, Jukka-Pekka Ojanen, Paavo Heikkinen, Juha Henttonen, Helena M. Laiho, Raija Minkkinen, Kari Tuomainen, Tarja Mikola, Juha |
author_facet |
Alm, Jukka Wall, Antti Myllykangas, Jukka-Pekka Ojanen, Paavo Heikkinen, Juha Henttonen, Helena M. Laiho, Raija Minkkinen, Kari Tuomainen, Tarja Mikola, Juha |
author_sort |
Alm, Jukka |
title |
A new method for estimating carbon dioxide emissions from drained peatland forest soils for the greenhouse gas inventory of Finland |
title_short |
A new method for estimating carbon dioxide emissions from drained peatland forest soils for the greenhouse gas inventory of Finland |
title_full |
A new method for estimating carbon dioxide emissions from drained peatland forest soils for the greenhouse gas inventory of Finland |
title_fullStr |
A new method for estimating carbon dioxide emissions from drained peatland forest soils for the greenhouse gas inventory of Finland |
title_full_unstemmed |
A new method for estimating carbon dioxide emissions from drained peatland forest soils for the greenhouse gas inventory of Finland |
title_sort |
new method for estimating carbon dioxide emissions from drained peatland forest soils for the greenhouse gas inventory of finland |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/bg-20-3827-2023 https://noa.gwlb.de/receive/cop_mods_00068946 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067352/bg-20-3827-2023.pdf https://bg.copernicus.org/articles/20/3827/2023/bg-20-3827-2023.pdf |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_relation |
Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-20-3827-2023 https://noa.gwlb.de/receive/cop_mods_00068946 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00067352/bg-20-3827-2023.pdf https://bg.copernicus.org/articles/20/3827/2023/bg-20-3827-2023.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-20-3827-2023 |
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3855 |
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