Verification of empirical equations describing subsidence rate of peatland in Central Poland

Ryszard Oleszczuk , Ewelina Zając , Janusz Urbański

Abstract

Currently, due to prolonged soil drought, dehydrated peat soils are particularly exposed to subsidence and, as a consequence, even to disappearance from the natural environment, in which they perform many important functions, e.g. storage of organic carbon and water retention. Therefore, predicting of settlement and disappearance processes of these soils is very important issue. This study was conducted to: (1) determine the degree and rate of subsidence of a drained peatland over 40 years, (2) establish the effect of subsidence on the depth of ditches and a watercourse, (3) verify empirical equations describing the subsidence based on field measurements. The work was carried out on fen in Central Poland which was managed as a grassland until around 2000, and then its use was discontinued. Subsidence rate was estimated from measurements of the peat deposit thickness taken in 11 locations in 1978 and 2018. Fourteen empirical equations used for estimating subsidence rate of drained peatlands were selected to verify the calculations against field data. The average subsidence rate of the studied peatland was relativity low (0.62 cm year-1 ), which may be associated with abandoning of agricultural use for the last 20 years. Loss of peat thickness varied from 5 to 41% and depended rather on drainage intensity than on its initial depth. In general, six from the verified empirical equations were useful in estimating average subsidence rate. Four equations seemed to be the most useful for deeply drained sites. Estimation of the subsidence solely on the basis of time since drainage may be biased.
Author Ryszard Oleszczuk - Warsaw University of Life Sciences
Ryszard Oleszczuk,,
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, Ewelina Zając (FoEEaLS / DoLRaED)
Ewelina Zając,,
- Department of Land Reclamation and Environmental Development
, Janusz Urbański - Warsaw University of Life Sciences
Janusz Urbański,,
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Journal seriesWetlands Ecology and Management, ISSN 0923-4861, e-ISSN 1572-9834, (N/A 70 pkt)
Issue year2020
No28
Pages495-507
Publication size in sheets0.6
Keywords in PolishPeatland subsidence, Empirical equations of subsidence, Drained peatland
ASJC Classification1104 Aquatic Science; 1105 Ecology, Evolution, Behavior and Systematics; 2308 Management, Monitoring, Policy and Law
DOIDOI:10.1007/s11273-020-09727-y
URL https://link.springer.com/article/10.1007/s11273-020-09727-y
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
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Verification of empirical equations describing subsidence rate of peatland in Central Poland of 16-07-2020
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Score (nominal)70
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 0.756; WoS Impact Factor: 2018 = 2.25 (2) - 2018=2.062 (5)
Citation count*
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FinansowanieThis research was carried out within Projects and DS-505-20-0527-00-Q00519-99 and DS-3331/KMIKŚ financed from a research grant allocated by the Polish Ministry of Science and Higher Education.
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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