Estimating the extent of fire induced soil water repellency in Mediterranean environment

Weninger, Thomas; Filipović, Vilim; Mešić, Mirel; Clothier, Brent; Filipović, Lana

doi:10.1016/j.geoderma.2018.12.008

Cited by 24 publications

(29 citation statements)

References 50 publications

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“…These include geochemical, e.g. through alteration by fire (DeBano, ; Stoof, Wesseling, & Ritsema, ; Weninger, Filipović, Mešić, Clothier, & Filipović, ); biochemical; leaf litter, plant degradation products, root exudates (Doerr et al, ; Hallett, ); biological where the organisms themselves are hydrophobic like fungi (Unestam, ; Wessels, ), and physical, simply through microscopically rough, rugose, or wrinkled surfaces (Quéré, ). However, the mechanisms that stimulate the development and persistence of soil hydrophobicity remain poorly understood; especially links to climate change (Goebel, Bachmann, Reichstein, Janssens, & Guggenberger, ).…”

Section: Evidence For Alternative States In Soils: Some Illustrative mentioning

confidence: 99%

Global environmental changes impact soil hydraulic functions through biophysical feedbacks

Robinson

Hopmans

Filipović

et al. 2019

Global Change Biology

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Section: Evidence For Alternative States In Soils: Some Illustrative mentioning

confidence: 99%

Global environmental changes impact soil hydraulic functions through biophysical feedbacks

Robinson

Hopmans

Filipović

et al. 2019

Global Change Biology

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“…SWR can limit the soil water absorption rate and capacity (Dekker & Jungerius, 2000; Li, Yao, Tang, Chau, & Feng, 2019), resulting in strong influences on the soil degradation and crop growth (González‐Peñaloza et al, 2012; Martínez‐garcía, Korthals, Brussaard, Bracht, & De, 2018). A lot of research has already been conducted to reveal the impact of SWR on the soil ecosystem under forest and fire‐affected soils (Debano, 2000; Plaza‐Álvarez et al, 2018; Weninger, Filipovi, Me, Clothier, & Filipovi, 2019). However, because the degree of SWR in farmland tillage soil is smaller than the forest and fire‐affected soils (Lucas‐Borja et al, 2019; Stavi, Barkai, Knoll, & Zaady, 2016), there is a lack of research on the SWR in farmland, especially for the study on how conservation agriculture affect SWR.…”

Section: Introductionmentioning

confidence: 99%

“…under forest and fire-affected soils (Debano, 2000;Plaza-Alvarez et al, 2018;Weninger, Filipovi, Me, Clothier, & Filipovi, 2019). However, because the degree of SWR in farmland tillage soil is smaller than the forest and fire-affected soils (Lucas-Borja et al, 2019;Stavi, Barkai, Knoll, & Zaady, 2016), there is a lack of research on the SWR in farmland, especially for the study on how conservation agriculture affect SWR.…”

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confidence: 99%

Factors governing soil water repellency under tillage management: The role of pore structure and hydrophobic substances

Liang

et al. 2020

Land Degrad Dev

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Soil water repellency (SWR) has significant effects on soil degradation by changing some soil processes (e.g., carbon sequestration and soil erosion). Understanding the influence factors of SWR under conservation agriculture are playing a vital role in the sustainable development for improving soil quality. However, how soil pore structure influence on SWR remains unclear. We aim to assess the impact of hydrophobic substances and pore structure on SWR. Here we conducted two long‐term experimental fields with three treatments: conventional tillage (CT), reduced tillage (RT), and no‐tillage (NT). X‐ray tomography and the sorptivity method were used to measure soil pore structure and SWR, respectively. We found that soil organic carbon (SOC) and microbial biomass carbon (MBC) were higher in RT and NT treatments than in CT. MBC had significant influences on soil water sorptivity (Sw) and water repellency index (RI; p < 0.001), whereas SOC had no influence on Sw (p > 0.05). MBC also showed a closer relationship with SWR than SOC in redundancy analysis. The RT and NT increased the porosity of 55–165 μm that had a positive relationship with ethanol sorptivity and RI (p < 0.05). Ethanol sorptivity increased with an increase in soil pore porosity and connectivity under RT and NT treatments. However, increasing the pore surface area could decrease Sw due to enhance contact area between hydrophobic substances and soil water. Overall, the RT and NT treatments increased the water repellency index, which was a result of the interactions between pore structure and hydrophobic substances.

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“…A fire severity assessment is essential for the analysis of post-fire flooding events, given that a strong correlation between fire severity and changes in the hydrological response of burned watersheds has been ascertained in many regions of the world (e.g., [19][20][21][22]). Wildfires are able to reduce the infiltration capacity of soils by inducing or enhancing, for example, soil water repellency (SWR) [23][24][25][26][27]. A direct consequence of SWR, or of the eventual surface sealing by ash, fine soil particles, and rainsplash, is the enhanced runoff during the first high-intensity rainstorms following wildfires.…”

Section: Introductionmentioning

confidence: 99%

Characterizing Consecutive Flooding Events after the 2017 Mt. Salto Wildfires (Southern Italy): Hazard and Emergency Management Implications

Esposito¹,

Parodi²,

Lagasio³

et al. 2019

Water

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Every summer, wildfires affect thousands of steep watersheds in Italy, causing the partial or complete destruction of vegetation, and changes in soil hydraulic properties. Such effects alter the hydrologic response of watersheds, increasing post-fire debris and sediment-laden flow hazard. This study characterizes the most relevant predisposing and triggering factors for a sequence of four post-fire flooding events, which, in the late summer-autumn of 2017, affected Montoro village in southern Italy. This research work consists of a fire severity assessment based on multispectral satellite images, characterization of meteorological systems and related flood-triggering rainfall, and provides an overview of the damage that occurred in the repeatedly affected urban area using crowdsourced data. The research findings demonstrate that the analyzed area burned with moderate-high (64.4%) and low severity (35.6%) levels. All the flooding events were triggered by rainfall evaluated as non-extreme, but with relevant peak intensities (I10 and I30), associated with the first convective storms impacting the burned watersheds. The crowdsourced data highlight the fact that roads and buildings on footslopes were inundated by mud and debris transported by rapid flows. The study identifies a clear relationship between wildfires and flooding processes and provides useful information for hazard assessment and emergency management operations.

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Estimating the extent of fire induced soil water repellency in Mediterranean environment

Cited by 24 publications

References 50 publications

Global environmental changes impact soil hydraulic functions through biophysical feedbacks

Global environmental changes impact soil hydraulic functions through biophysical feedbacks

Factors governing soil water repellency under tillage management: The role of pore structure and hydrophobic substances

Characterizing Consecutive Flooding Events after the 2017 Mt. Salto Wildfires (Southern Italy): Hazard and Emergency Management Implications

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