Analysing water level strategies to reduce soil subsidence in Dutch peat meadows

Querner, E.P.; Jansen, P.C.; Akker, J.J.H. van den; Kwakernaak, C.

doi:10.1016/j.jhydrol.2012.04.029

Cited by 56 publications

(67 citation statements)

References 12 publications

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“…Lowering the groundwater level in these areas deepens the aerobic zone of the soil, leading (especially in peatlands) to the oxidation of organic matter and further land subsidence (Querner et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Other authors concluded that the contribution of oxidation of organic matter and compaction to land subsidence is variable in time (van Asselen 2011). Land subsidence as a result of water discharging is occurring in many low-lying areas and delta areas worldwide (Kolker et al 2011;Teatini et al 2011;van Asselen 2011;Wöppelmann et al 2013), and many attempts are made to attenuate or reverse this process (Querner et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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Functional properties of soils formed from biochemical ripening of dredged sediments—subsidence mitigation in delta areas

et al. 2016

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Purpose In delta areas, dense networks of canals have been developed through time and have to be periodically dredged. Lowering the groundwater level in delta areas deepens the aerobic zone, leading to the oxidation of organic matter and possibly to land subsidence. The use of the dredged sediments on land can be a solution to mitigate land subsidence in delta areas. Materials and methods Five types of dredged sediments with different organic matter content and particle size distribution were dewatered for 7 days and then submitted to biochemical ripening during 141 days on a laboratorial scale with constant temperature and relative humidity. The functional properties analysed were the type and content of organic matter, pH, total C, N, P and S, dry bulk density, water retention capacity, aggregate stability and load-bearing capacity. Results and discussion After biochemical ripening, there was no significant loss in the mass of organic matter but there was an increase in the fraction of stable organic compounds, observed by an increase in oxygen-bearing compounds and a decrease in hydrocarbons during biochemical ripening. The pH was not affected by biochemical ripening, and the total C, N, P and S concentrations are high and therefore the dredged sediments can improve the quality of the land. Most volume lost during dewatering and biochemical ripening can be attributed to the loss of water. The water retention capacity of the dredged sediments changed with biochemical ripening. The soils formed from biochemical ripening have very stable aggregates, and its load-bearing capacity is enough to sustain cattle and tractors. Conclusions Most volume lost during dewatering and biochemical ripening can be attributed to the loss of water and not organic matter. Therefore, the studied dredged sediments have potential to mitigate land subsidence in delta areas when spread on land.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Functional properties of soils formed from biochemical ripening of dredged sediments—subsidence mitigation in delta areas

et al. 2016

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“…Laboratory scale experiments with samples of 1,5 cm height of the same sediments have shown that after 141 days at 20 °C the organic matter mineralization was negligible, and the samples had enough undrained shear strength to sustain cattle and tractors (Oliveira et al 2017). The solution of thinner layers would not only limit air penetration due to the high water retention capacity but also allow shallower groundwater tables which is a complementary measure to reduce land subsidence Querner et al 2012). Still, the cost-effectiveness of spreading the sediments over larger areas must be properly accessed to avoid higher environmental impacts (Bates et al 2015).…”

Section: Discussionmentioning

confidence: 99%

“…For that, dense networks of watercourses and pumping stations are needed which is perpetuating the subsidence and is becoming increasingly costly (Querner et al 2012). …”

Section: Introductionmentioning

confidence: 99%

“…Many other lowlands delta areas suffer from subsidence (Aich et al 2013;Hooijer et al 2012;Pronger et al 2014;Querner et al 2012;Wöppelmann et al 2013), and sediments are a natural resource that can be beneficially used to reverse the process of land subsidence, especially considering that in some areas the sediments and water flow are restrained upstream which limits the natural restoration through sediment accumulation in delta areas (Kolker et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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Subsidence of organic dredged sediments in an upland deposit in Wormer- en Jisperveld: North Holland, the Netherlands

et al. 2018

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Land subsidence in low-lying peatlands can be caused by shrinkage and organic matter oxidation. When these areas have networks of ditches and canals for drainage purposes, the sediments that accumulate in the waterways can be used to reverse the process of land subsidence. The objective of this study is to understand how dredged sediments can be used to reverse the process of land subsidence by analysing the contribution of shrinkage and organic matter mineralization to the subsidence observed in an upland deposit. A deposit of dredged sediments in the Wormer-en Jisperveld-North Holland, the Netherlands-was characterized during 17 months in terms of subsidence of the sediments, subsidence of the soil underlying the deposit, geotechnical water content, organic matter content, type of organic matter and nutrients. The deposit was filled to a height of 195 cm, and after 17 months, the subsidence of the sediments was 88 cm. In addition, a subsidence of 19.5 cm of the underlying soil was observed. Subsidence could be attributed to shrinkage since no significant changes in the organic matter content and total organic carbon were observed. The type of organic matter changed in the direction of humification until winter 2014, stabilized from winter 2014 to spring 2015 and changed in the direction of mineralization after the spring of 2015. Subsidence of dredged sediments in upland deposits is caused by shrinkage during the first 17 months. The solution of spreading thinner layers of sediments over the land to decrease the subsidence rates should be explored since the pressure of the deposit on the underlying soil caused an extra subsidence of 19.5 cm.

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Integrated time‐lapse geoelectrical imaging of wetland hydrological processes

Uhlemann

Sorensen

House

et al. 2016

Water Resources Research

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17Wetlands provide crucial habitats, are critical in the global carbon cycle, and act as key 18 biogeochemical and hydrological buffers. The effectiveness of these services is mainly controlled by 19 hydrological processes, which can be highly variable both spatially and temporally due to structural 20 complexity and seasonality. Spatial analysis of 2D geoelectrical monitoring data integrated into the 21 interpretation of conventional hydrological data has been implemented to provide a detailed 22 understanding of hydrological processes in a riparian wetland. This study shows that a combination 23 of processes can define the resistivity signature of the shallow subsurface, highlighting the 24 seasonality of these processes and its corresponding effect on the wetland hydrology. Groundwater 25 exchange between peat and the underlying river terrace deposits, spatially and temporally defined 26 by geoelectrical imaging and verified by point sensor data, highlighted the groundwater dependent 27 nature of the wetland. A 30 % increase in peat resistivity was shown to be caused by a nearly entire 28 exchange of the saturating groundwater. For the first time, we showed that automated 29 interpretation of geoelectrical data can be used to quantify shrink-swell of expandable soils, 30 affecting hydrological parameters, such as, porosity, water storage capacity, and permeability. This 31 study shows that an integrated interpretation of hydrological and geophysical data can significantly 32 improve the understanding of wetland hydrological processes. Potentially, this approach can provide 33 the basis for the evaluation of ecosystem services and may aid in the optimization of wetland 34 management strategies. 35

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Analysing water level strategies to reduce soil subsidence in Dutch peat meadows

Cited by 56 publications

References 12 publications

Functional properties of soils formed from biochemical ripening of dredged sediments—subsidence mitigation in delta areas

Functional properties of soils formed from biochemical ripening of dredged sediments—subsidence mitigation in delta areas

Subsidence of organic dredged sediments in an upland deposit in Wormer- en Jisperveld: North Holland, the Netherlands

Integrated time‐lapse geoelectrical imaging of wetland hydrological processes

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