GHG Emissions from Drainage Ditches in Peat Extraction Sites and Peatland Forests in Hemiboreal Latvia

Vanags-Duka, Mārtiņš; Bārdule, Arta; Butlers, Aldis; Upenieks, Emīls Mārtiņš; Lazdiņš, Andis; Purviņa, Dana; Līcīte, Ieva

doi:10.3390/land11122233

Open AccessArticle

GHG Emissions from Drainage Ditches in Peat Extraction Sites and Peatland Forests in Hemiboreal Latvia

by

Mārtiņš Vanags-Duka

,

Arta Bārdule

^*

,

Aldis Butlers

,

Emīls Mārtiņš Upenieks

,

Andis Lazdiņš

,

Dana Purviņa

and

Ieva Līcīte

Latvian State Forest Research Institute ‘Silava’ (LSFRI Silava), Rigas Str. 111, LV-2169 Salaspils, Latvia

^*

Author to whom correspondence should be addressed.

Land 2022, 11(12), 2233; https://doi.org/10.3390/land11122233

Submission received: 31 October 2022 / Revised: 23 November 2022 / Accepted: 5 December 2022 / Published: 7 December 2022

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Abstract

We determined the magnitude of instantaneous greenhouse gas (GHG) emissions from drainage ditches in hemiboreal peatlands in Latvia during the frost-free period of 2021 and evaluated the main affecting factors. In total, 10 research sites were established in drained peatlands in Latvia, including active and abandoned peat extraction sites and peatland forests. Results demonstrated that in terms of global warming potential, the contribution of CO₂ emissions to the total budget of GHG emissions from drainage ditches can exceed the CH₄ contribution. The average CO₂ and N₂O emissions from drainage ditches in peatland forests were significantly higher than those from ditches in peat extraction sites, while there was no difference in average CH₄ emissions from ditches between peatland forests and peat extraction sites. Emissions from ditches of all GHGs increased with increasing temperature. In addition, CO₂ and N₂O emissions from drainage ditches increased with decreasing groundwater (GW) level. They were also negatively correlated with water level in ditches, but positively with potassium (K) and total nitrogen (TN) concentrations in water. By contrast, CH₄ emissions from drainage ditches increased with increasing GW level and water level in ditches but were negatively correlated with K and TN concentrations in water.

Keywords: greenhouse gases; carbon dioxide; methane; nitrous oxide; drainage ditches; emissions; peatland forests; peat extraction sites

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MDPI and ACS Style

Vanags-Duka, M.; Bārdule, A.; Butlers, A.; Upenieks, E.M.; Lazdiņš, A.; Purviņa, D.; Līcīte, I. GHG Emissions from Drainage Ditches in Peat Extraction Sites and Peatland Forests in Hemiboreal Latvia. Land 2022, 11, 2233. https://doi.org/10.3390/land11122233

AMA Style

Vanags-Duka M, Bārdule A, Butlers A, Upenieks EM, Lazdiņš A, Purviņa D, Līcīte I. GHG Emissions from Drainage Ditches in Peat Extraction Sites and Peatland Forests in Hemiboreal Latvia. Land. 2022; 11(12):2233. https://doi.org/10.3390/land11122233

Chicago/Turabian Style

Vanags-Duka, Mārtiņš, Arta Bārdule, Aldis Butlers, Emīls Mārtiņš Upenieks, Andis Lazdiņš, Dana Purviņa, and Ieva Līcīte. 2022. "GHG Emissions from Drainage Ditches in Peat Extraction Sites and Peatland Forests in Hemiboreal Latvia" Land 11, no. 12: 2233. https://doi.org/10.3390/land11122233

APA Style

Vanags-Duka, M., Bārdule, A., Butlers, A., Upenieks, E. M., Lazdiņš, A., Purviņa, D., & Līcīte, I. (2022). GHG Emissions from Drainage Ditches in Peat Extraction Sites and Peatland Forests in Hemiboreal Latvia. Land, 11(12), 2233. https://doi.org/10.3390/land11122233

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GHG Emissions from Drainage Ditches in Peat Extraction Sites and Peatland Forests in Hemiboreal Latvia

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