Role of land cover in Finland's greenhouse gas emissions.

Autor: Holmberg M; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland. maria.holmberg@syke.fi., Junttila V; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland., Schulz T; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland., Grönroos J; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland., Paunu VV; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland., Savolahti M; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland., Minunno F; Department of Forest Sciences, Institute for Atmospheric and Earth System Research (INAR) & Faculty of Agriculture and Forestry, University of Helsinki, Latokartanonkaari 7, P.O. Box 27, 00014, Helsinki, Finland., Ojanen P; Department of Forest Sciences, Institute for Atmospheric and Earth System Research (INAR) & Faculty of Agriculture and Forestry, University of Helsinki, Latokartanonkaari 7, P.O. Box 27, 00014, Helsinki, Finland., Akujärvi A; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland., Karvosenoja N; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland., Kortelainen P; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland., Mäkelä A; Department of Forest Sciences, Institute for Atmospheric and Earth System Research (INAR) & Faculty of Agriculture and Forestry, University of Helsinki, Latokartanonkaari 7, P.O. Box 27, 00014, Helsinki, Finland., Peltoniemi M; Natural Resources Institute Finland (Luke), Latokartanonkaari 9, 00790, Helsinki, Finland., Petäjä J; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland., Vanhala P; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland., Forsius M; Finnish Environment Institute (SYKE), Latokartanonkaari 11, 00790, Helsinki, Finland.
Jazyk: angličtina
Zdroj: Ambio [Ambio] 2023 Nov; Vol. 52 (11), pp. 1697-1715. Date of Electronic Publication: 2023 Sep 07.
DOI: 10.1007/s13280-023-01910-8
Abstrakt: We present regionally aggregated emissions of greenhouse gases (GHG) from five land cover categories in Finland: artificial surfaces, arable land, forest, waterbodies, and wetlands. Carbon (C) sequestration to managed forests and unmanaged wetlands was also assessed. Models FRES and ALas were applied for emissions (CO 2 , CH 4 , N 2 O) from artificial surfaces and agriculture, and PREBAS for forest growth and C balance. Empirical emission coefficients were used to estimate emissions from drained forested peatland (CH 4 , N 2 O), cropland (CO 2 ), waterbodies (CH 4 , CO 2 ), peat production sites and undrained mires (CH 4 , CO 2 , N 2 O). We calculated gross emissions of 147.2 ± 6.8 TgCO 2 eq yr -1 for 18 administrative units covering mainland Finland, using data representative of the period 2017-2025. Emissions from energy production, industrial processes, road traffic and other sources in artificial surfaces amounted to 45.7 ± 2.0 TgCO 2 eq yr -1 . The loss of C in forest harvesting was the largest emission source in the LULUCF sector, in total 59.8 ± 3.3 TgCO 2 eq yr -1 . Emissions from domestic livestock production, field cultivation and organic soils added up to 12.2 ± 3.5 TgCO 2 eq yr -1 from arable land. Rivers and lakes (13.4 ± 1.9 TgCO 2 eq yr -1 ) as well as undrained mires and peat production sites (14.7 ± 1.8 TgCO 2 eq yr -1 ) increased the total GHG fluxes. The C sequestration from the atmosphere was 93.2 ± 13.7 TgCO 2 eq yr -1 . with the main sink in forest on mineral soil (79.9 ± 12.2 TgCO 2 eq yr -1 ). All sinks compensated 63% of total emissions and thus the net emissions were 53.9 ± 15.3 TgCO 2 eq yr -1 , or a net GHG flux per capita of 9.8 MgCO 2 eq yr -1 .
(© 2023. The Author(s).)
Databáze: MEDLINE
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