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Measurements versus Estimates of Soil Subsidence and Mineralization Rates at Peatland over 50 Years (1966–2016)

Author

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  • Ryszard Oleszczuk

    (Institute of Environmental Engineering, Warsaw University of Life Sciences, Nowoursynowska 159 Str., 02-776 Warsaw, Poland)

  • Andrzej Łachacz

    (Department of Soil Science and Microbiology, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, Plac Lodzki 3, 10-727 Olsztyn, Poland)

  • Barbara Kalisz

    (Department of Soil Science and Microbiology, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, Plac Lodzki 3, 10-727 Olsztyn, Poland)

Abstract

The size of peat subsidence at Solec peatland (Poland) over 50 years was determined. The field values for subsidence and mineralization were compared with estimates using 20 equations. The subsidence values derived from equations and field measurements were compared to rank the equations. The equations that include a temporal factor (time) were used to forecast subsidence (for the 20, 30 and 40 years after 2016) assuming stable climate conditions and water regime. The annual rate of subsidence ranged from 0.08 to 2.2 cm year −1 (average 1.02 cm year −1 ). Equation proposed by Jurczuk produced the closest-matching figure (1.03 cm year −1 ). Applying the same equation to calculate future trends indicates that the rate of soil subsidence will slow down by about 20% to 0.82 cm year −1 in 2056. With the measured peat subsidence rate, the groundwater level (57–72 cm) was estimated and fed into equations to determine the contribution of chemical processes to the total size of subsidence. The applied equations produced identical results, attributing 46% of peat subsidence to chemical (organic matter mineralization) processes and 54%—to physical processes (shrinkage, organic matter consolidation). The belowground changes in soil in relation to groundwater level have been neglected lately, with GHGs emissions being the main focus.

Suggested Citation

  • Ryszard Oleszczuk & Andrzej Łachacz & Barbara Kalisz, 2022. "Measurements versus Estimates of Soil Subsidence and Mineralization Rates at Peatland over 50 Years (1966–2016)," Sustainability, MDPI, vol. 14(24), pages 1-19, December.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:24:p:16459-:d:997901
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    References listed on IDEAS

    as
    1. Slawomir Smolczynski & Barbara Kalisz & Pawel Urbanowicz & Miroslaw Orzechowski, 2021. "Effect of Peatland Siltation on Total and Labile C, N, P and K," Sustainability, MDPI, vol. 13(15), pages 1-11, July.
    2. Francesco Nicola Tubiello & Riccardo Biancalani & Mirella Salvatore & Simone Rossi & Giulia Conchedda, 2016. "A Worldwide Assessment of Greenhouse Gas Emissions from Drained Organic Soils," Sustainability, MDPI, vol. 8(4), pages 1-13, April.
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    Cited by:

    1. Jan Pawluczuk & Arkadiusz Stępień, 2023. "Dynamics of Organic Nitrogen Compound Mineralization in Organic Soils under Grassland, and the Mineral N Concentration in Groundwater (A Case Study of the Mazurian Lake District, Poland)," Sustainability, MDPI, vol. 15(3), pages 1-17, February.
    2. Andrzej Łachacz & Barbara Kalisz & Paweł Sowiński & Bożena Smreczak & Jacek Niedźwiecki, 2023. "Transformation of Organic Soils Due to Artificial Drainage and Agricultural Use in Poland," Agriculture, MDPI, vol. 13(3), pages 1-20, March.

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