Emissions of CO2, N2O and CH4 From Cultivated and Set Aside Drained Peatland in Central Sweden

Berglund, Örjan; Kätterer, Thomas; Meurer, Katharina

doi:10.3389/fenvs.2021.630721

Cited by 13 publications

(23 citation statements)

References 58 publications

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“…The mean contribution of soil R het to soil total respiration is 70.3%, while the plant-derived CO 2 emissions, calculated as the difference between simultaneously detected R tot (total CO 2 fluxes from plots with vegetation cover) and R het (CO 2 fluxes from bare soil) was 29.7%. The estimated contribution of plant-derived CO 2 fluxes is similar to results (27-63%) obtained in central and southern Sweden (where the climate is similar to that of Latvia) and reported by Berglund et al (2011Berglund et al ( , 2021 [44,45] and Norberg et al (2016) [46], thus validating the methodologic approach of R het 's measurement results interpretation in the study.…”

Section: Soil Heterotrophic Respiration (Instantaneous)supporting

confidence: 89%

Impact of Soil Organic Layer Thickness on Soil-to-Atmosphere GHG Fluxes in Grassland in Latvia

Purviņa,

Zvaigzne,

Skranda

et al. 2024

Agriculture

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Drained organic soils in agricultural land are considered significant contributors to total greenhouse gas (GHG) emissions, although the temporal and spatial variation of GHG emissions is high. Here, we present results of the study on soil-to-atmosphere fluxes of carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4) from drained organic (fen) soils in grassland. A two-year study (from July 2021 to June 2023) was conducted in three research sites in Latvia (Europe’s hemiboreal zone). Soil total respiration (Rtot), CH4 and N2O fluxes were determined using a manual opaque chamber technique in combination with gas chromatography, while soil heterotrophic respiration (Rhet) was measured with a portable spectrometer. Among research sites, the thickness of the soil organic layer ranged from 10 to 70 cm and mean groundwater level ranged from 27 to 99 cm below the soil surface. Drained organic soil in all research sites was a net source of CO2 emissions (mean 3.48 ± 0.33 t CO2-C ha−1 yr−1). No evidence was obtained that the thickness of the soil organic layer (ranging from 10 to 70 cm) and OC stock in soil can be considered one of the main affecting factors of magnitude of net CO2 emissions from drained organic soil. Drained organic soil in grassland was mostly a source of N2O emissions (mean 2.39 ± 0.70 kg N2O-N ha−1 yr−1), while the soil both emitted and consumed atmospheric CH4 depending on the thickness of the soil organic layer (ranging from −3.26 ± 1.33 to 0.96 ± 0.10 kg CH4-C ha−1 yr−1).

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Section: Soil Heterotrophic Respiration (Instantaneous)supporting

confidence: 89%

Impact of Soil Organic Layer Thickness on Soil-to-Atmosphere GHG Fluxes in Grassland in Latvia

Purviņa,

Zvaigzne,

Skranda

et al. 2024

Agriculture

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“…If the water level annually is 10 to 30 cm below the soil surface [29], both aerobic and anaerobic conditions are maintained on top of the soil, and nitrification and denitrification produce N 2 O. Thus, with this water level, peatland rewetting can create N 2 O-N emissions [29,45,72,125]. In the literature, rewetting is considered the most effective approach to decreasing N 2 O emissions from degraded peatlands.…”

Section: Methods Of Peatland Rewettingmentioning

confidence: 99%

Pros and Cons of Strategies to Reduce Greenhouse Gas Emissions from Peatlands: Review of Possibilities

Balode,

Bumbiere,

Sosars

et al. 2024

Applied Sciences

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Peatlands can become valuable resources and greenhouse gas sinks through the use of different management practices. Peatlands provide carbon sequestration; however, they are also among the greatest greenhouse gas emissions sources. The estimated annual carbon dioxide equivalent emissions from peat worldwide are 220 million tons. Novel strategies, methods, and technologies must be developed to enhance the sustainable use of peatlands and achieve climate targets by 2050, as set forth by the European Commission. There is no consensus in the scientific literature on which strategies included in the policy documents are more fruitful for reducing emissions. There are uncertainties and knowledge gaps in the literature that summarise the cons and benefits of each strategy regarding the potential of GHG emission reduction. Currently, peat is undervalued as a resource in the bioeconomy and innovation—a way that could save costs in peatland management. This review paper aims to analyse existing and potential strategies to minimise greenhouse gas emissions from peatlands. Studies show significant debates in the literature on whether the rewetting of peatlands and afforestation of previously drained peatlands can be defined as restoration. A more effective management of peatland restoration should involve combining restoration methods. The rewetting of peatlands should be realised in combination with top-soil removal to minimise methane emissions. The rewetting of peatlands should be used only in combination with revegetation after rewetting. One of the promising solutions for methane emission reduction could be paludiculture using sphagnum species. Products from paludiculture biomass can reduce GHG emissions and store long-term emissions in products. Paludiculture can also be the solution for further income for landowners and innovative products using the biomass of harvested paludiculture plants.

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“…One of the initiatives aimed at reclaiming peatlands for a variety of purposes involves the implementation of drainage systems. Draining peatlands not only enhances the hydrological conditions for diverse purposes, but it also accelerates the process of decomposition and oxidative conditions in peat, leading to detrimental effects such as subsidence, irreversibility, and the release of greenhouse gases (GHGs) (Abdalla et al, 2016;Berglund et al, 2021;Li et al, 2021;Saharjo and Novita, 2022). The types of land use can impact the rate and movement of GHG emissions, thereby altering the contribution of each GHG in different land use categories (Ishikura et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Effect of peat water levels on greenhouse gas production in different cropping land use

Wihardjaka,

Teddy Sutriadi,

Adriany

et al. 2024

Chil. j. agric. res.

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Degraded peat has a high potential for use in agricultural production, especially food crops. The water table, which impacts the production of greenhouse gases (GHGs), is the main problem concerning peat utilization. The study aimed to determine the production of greenhouse gases at various peat water levels. The study was conducted in a laboratory setting utilizing the soil column of undisturbed peat soil. The factorial experiment was arranged in randomized block design, with three replicates, with the first factor was peat cropping use: Maize (Zea mays L.), pineapple (Ananas comosus (L.) Merr.), and scrubs. The second factor was water level (0, 10, 20, 30 cm depth). Variables measured were GHG flux (CO2 and CH4), pH, redox potential, total C content, and ash content. The peat cropping use interacted significantly with the peat water level on the potential for CH4 and CO2 production and the value of global warming potential. Water table depth significantly increased CO2 flux and global warming potential (GWP) in all three peat cropping uses. The lowest GWP at a 0 cm peat water level was 944 (pineapple use), 961 (maize use), and 1097 mg CO2e m -2 d -1 (scrub use). Peat for pineapple cultivation produces the lowest CO2 production and GWP compared to maize cultivation and scrubs. The negative relationship between redox potential and GWP is significant in peat for scrub. The relationship between pH and GWP is significant in peat for pineapple and scrub.

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Emissions of CO2, N2O and CH4 From Cultivated and Set Aside Drained Peatland in Central Sweden

Cited by 13 publications

References 58 publications

Impact of Soil Organic Layer Thickness on Soil-to-Atmosphere GHG Fluxes in Grassland in Latvia

Impact of Soil Organic Layer Thickness on Soil-to-Atmosphere GHG Fluxes in Grassland in Latvia

Pros and Cons of Strategies to Reduce Greenhouse Gas Emissions from Peatlands: Review of Possibilities

Effect of peat water levels on greenhouse gas production in different cropping land use

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