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

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  • Mārtiņš Vanags-Duka

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

  • Arta Bārdule

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

  • Aldis Butlers

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

  • Emīls Mārtiņš Upenieks

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

  • Andis Lazdiņš

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

  • Dana Purviņa

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

  • Ieva Līcīte

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

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 CO 2 emissions to the total budget of GHG emissions from drainage ditches can exceed the CH 4 contribution. The average CO 2 and N 2 O 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 CH 4 emissions from ditches between peatland forests and peat extraction sites. Emissions from ditches of all GHGs increased with increasing temperature. In addition, CO 2 and N 2 O 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, CH 4 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.

Suggested Citation

  • Mārtiņš Vanags-Duka & Arta Bārdule & Aldis Butlers & Emīls Mārtiņš Upenieks & Andis Lazdiņš & Dana Purviņa & Ieva Līcīte, 2022. "GHG Emissions from Drainage Ditches in Peat Extraction Sites and Peatland Forests in Hemiboreal Latvia," Land, MDPI, vol. 11(12), pages 1-17, December.
    • Handle: RePEc:gam:jlands:v:11:y:2022:i:12:p:2233-:d:996571
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    References listed on IDEAS

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    1. Jens Leifeld & Chloé Wüst-Galley & Susan Page, 2019. "Intact and managed peatland soils as a source and sink of GHGs from 1850 to 2100," Nature Climate Change, Nature, vol. 9(12), pages 945-947, December.
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    Cited by:

    1. Jonas Volungevicius & Kristina Amaleviciute-Volunge, 2023. "A Conceptual Approach to the Histosols Profile Morphology as a Risk Indicator in Assessing the Sustainability of Their Use and Impact on Climate Change," Sustainability, MDPI, vol. 15(18), pages 1-14, September.

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