The stability and fate of Soil Organic Carbon during the transport phase of soil erosion

Nijs, Evy A. de; Cammeraat, Erik

doi:10.1016/j.earscirev.2019.103067

Cited by 59 publications

(13 citation statements)

References 51 publications

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“…The measured quantities of eroded soil by splash (262.0 ± 14.4 g m 2 (Cambisol) and 382.0 ± 18.0 g m 2 (Luvisol)) are in agreement with reported values of splashed soil for a clay loam (290 ± 10 g m 2 ) and for a silt loam (550 ± 10 g m 2 ) or sand (730 ± 20 g m 2 ) under 30 mm h -1 rainfall (Legout et al, 2005). Splash erosion, or the impact of raindrops on soil particles, is often considered the first and dominant process of soil detachment and transport over small distances, and depends on rainfall characteristics and soil surface properties (de Nijs and Cammeraat, 2020;Issa et al, 2006). The amount of splashed soil by raindrops generally increases with decreasing physical stability of soil (i.e.…”

Section: Soil Typementioning

confidence: 94%

“…Surface sealing is generally stronger for soils with a coarser soil texture and lower organic matter contents (Armenise et al, 2018). In contrast, clay-rich soils with a high physical stability (i.e., high aggregate stability) and higher TOC content are less prone to erosion, as they do not lead to rapid surface sealing and therefore slow down runoff generation and erosion (Berhe and Kleber, 2013;de Nijs and Cammeraat, 2020;Thomaz, 2018). The eroded quantities of soil (5.2 ± 0.8 g m 2 )…”

Section: Soil Typementioning

confidence: 99%

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Key drivers of pyrogenic carbon redistribution during a simulated rainfall event

Bellè¹,

Berhe²,

Hagedorn³

et al. 2020

Preprint

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Abstract. Pyrogenic carbon (PyC) is produced by the incomplete combustion of vegetation during wildfires and is a major and persistent pool of the global carbon (C) cycle. However, its redistribution in the landscape after fires remains largely unknown. Therefore, we conducted rainfall simulation experiments on 0.25-m2 plots with two distinct Swiss forest soils (Cambisol (clay loam) and Luvisol (sandy silt)). We applied PyC produced from wood (Picea abies) labelled under FACE conditions and C4-grass (Miscanthus sinensis) to the soil surface to study PyC redistribution by runoff and splash, and the vertical mobility of PyC in a 10 cm unsaturated soil column based on the differences in δ13C of soils and PyC. We assessed the effect of soil texture, slope angle and PyC characteristics (feedstock and particle size) on the mobility of PyC during 30 minutes of intense rainfall (102 mm h−1). Our results highlight that PyC is highly mobile. Surface runoff transported between 0.2 to 36.0 % of the total added PyC. Erosion by splash further redistributed 10.3 to 25.3 % of the added PyC. Soil type had a substantial impact on the redistribution of PyC by both runoff and splash: on average, we recovered 10.5 % of the added PyC in runoff and splashed material for the clay-rich Cambisol and 61.3 % of the added PyC for the sandy silt Luvisol combined. PyC feedstock had a clear, but contrasting effect on PyC redistribution: relocation in the runoff and splashed material was greater for wood-PyC (43.4 % of total added PyC) than grass-PyC (28.4 %). However, more wood-PyC (11.5 %; fraction of organic C derived from the PyC) remained where it was initially applied compared to grass-PyC (7.4 %). The results further suggest that the effect of PyC characteristics on its mobility can be highly variable and depend not only on the material from which it was derived, but also on other factors (e.g. particle size, porosity, density). In particular, the mobility of PyC was almost twice as large for fine-grained PyC (

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Section: Soil Typementioning

confidence: 94%

Section: Soil Typementioning

confidence: 99%

Key drivers of pyrogenic carbon redistribution during a simulated rainfall event

Bellè¹,

Berhe²,

Hagedorn³

et al. 2020

Preprint

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“…Soil organic carbon (SOC), being the largest reservoir of non‐sedimentary terrestrial carbon, and its fluxes during soil erosion processes could have an important effect on atmospheric carbon (de Nijs & Cammeraat, 2020). Recently, quantitative assessment of SOC redistribution along soil erosion processes has become increasingly important.…”

Section: The Role Of Soil Piping In Carbon Cyclementioning

confidence: 99%

Can soil piping impact environment and society? Identifying new research gaps

Bernatek‐Jakiel

Nadal‐Romero

2022

Earth Surf Processes Landf

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Soil piping is a widespread, although often overlooked land degradation process. So far, subsurface soil erosion studies have been focused on the importance of soil piping in hydrological and geomorphological processes, and factors controlling piping processes. Nowadays, the environmental changes being caused by the Anthropocene have clearly demonstrated that society depends on soil more than ever before, so the traditional studies of soil erosion processes need to be redefined. In that sense, geomorphologists face to overcome new piping-related problems. In this article we identify new possible areas of research: (i) soil pipes and pipe collapses (PCs) as natural hazards, (ii) role of soil piping in carbon cycle, (iii) soil pipes and PCs and their relationships with biodiversity, and (iv) piping-affected areas as geodiversity sites. Only better recognition of natural hazards driven by soil piping, such as land subsidence and degradation, landslides, flooding and off-site sediment effects may result in better prevention and control measures in piping-affected areas. Moreover, in the context of Global Change the role of soil piping in carbon cycle should be raised. Land-use and land-cover changes, as well as climate change may affect piping dynamics in different morphoclimatic regions and soil loss due to piping may lead to carbon loss. Soil pipes and PCs are closely interlinked with biodiversity, both positively and negatively. Piping erosion may directly and indirectly destroy

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“…In depositional areas, the C budget is affected by competing processes such as changed (lower) mineralisation, biomass production and deep burial of SOC, which can be related to its accumulation and consequently, to the increase of the SOC stock, although relatively high decomposition of SOC in buried sediments can also happen (Kirkels et al, 2014). Consequently, it is still not clear what happens during the transport and deposition of eroded SOC, which has created a controversy on the role of soil erosion in the C cycle (de Nijs and Cammeraat, 2020). According to Doetterl et al (2016), recent studies have highlighted two apparently contradictory processes taking place during transport and deposition.…”

Section: Soil Characteristicsmentioning

confidence: 99%

“…Redistribution of SOC can be affected by forest fires, which can increase or reduce SOC stocks depending on several factors (González-Pérez et al, 2004;Shakesby et al, 2015). The role of soil aggregation and stabilization in SOC dynamics during erosion and deposition has attracted scientific attention in recent decades (Nadeu et al, 2011;de Nijs and Cammeraat, 2020). However, the effects of such processes on SOC stabilization have not been studied in Mediterranean forest soils, where bare-soil areas act as sources of runoff water, sediment, seeds and nutrients (including C) that move downslope and are captured by, and concentrated in, vegetation patches (Urgeghe and Bautista, 2015).…”

Section: Introductionmentioning

confidence: 99%

Soil and organic carbon redistribution in a recently burned Mediterranean hillslope affected by water erosion processes

et al. 2022

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The stability and fate of Soil Organic Carbon during the transport phase of soil erosion

Cited by 59 publications

References 51 publications

Key drivers of pyrogenic carbon redistribution during a simulated rainfall event

Key drivers of pyrogenic carbon redistribution during a simulated rainfall event

Can soil piping impact environment and society? Identifying new research gaps

Soil and organic carbon redistribution in a recently burned Mediterranean hillslope affected by water erosion processes

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