Post-fire evolution of water repellency and aggregate stability in Mediterranean calcareous soils: A 6-year study

Jordán, António; Gordillo‐Rivero, Ángel J.; García‐Moreno, Jorge; Zavala, Lorena M.; Granged, Arturo José Pascual; Gil, Juan; Neto-Paixão, Helena M.

doi:10.1016/j.catena.2014.02.001

Cited by 14 publications

(12 citation statements)

References 72 publications

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“…Soil degradation by processes such as soil erosion, shallow landslides and debris flows is a significant problem in mountainous areas, and is a crucial issue for natural hazard assessment in these areas (Jordán et al, 2014;Moreno-Ramón et al, 2014;Peng et al, 2015;Stanchi et al, 2015;Muñoz-Rojas et al, 2016a). A collapsing gully is a serious type of soil erosion widely distributed in the hilly granitic region of southern China, which is formed in the hill slopes covered by thick granite weathering mantle (Xu, 1996).…”

Section: Introductionmentioning

confidence: 99%

Soil Atterberg limits of different weathering profiles of the collapsing gullies in the hilly granitic region of southern China

et al. 2017

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Abstract. Collapsing gullies are one of the most serious soil erosion problems in the tropical and subtropical areas of southern China. However, few studies have been performed on the relationship of soil Atterberg limits with soil profiles of the collapsing gullies. Soil Atterberg limits, which include plastic limit and liquid limit, have been proposed as indicators for soil vulnerability to degradation. Here, the soil Atterberg limits within different weathering profiles and their relationships with soil physicochemical properties were investigated by characterizing four collapsing gullies in four counties in the hilly granitic region of southern China. The results showed that with the fall of weathering degree, there was a sharp decrease in plastic limit, liquid limit, plasticity index, soil organic matter, cation exchange capacity and free iron oxide. Additionally, there was a gradual increase in liquidity index, a sharp increase in particle density and bulk density followed by a slight decline, a decrease in the finer soil particles, a noticeable decline in the clay contents, and a considerable increase in the gravel and sand contents. The plastic limit varied from 19.43 to 35.93 % in TC, 19.51 to 33.82 % in GX, 19.32 to 35.58 % in AX and 18.91 to 36.56 % in WH, while the liquid limit varied from 30.91 to 62.68 % in TC, 30.89 to 57.70 % in GX, 32.48 to 65.71 % in AX and 30.77 to 62.70 % in WH, respectively. The soil Atterberg limits in the sandy soil layers and detritus layers were lower than those in the surface layers and red soil layers, which results in higher vulnerability of the sandy soil layers and detritus layers to erosion and finally the formation of the collapsing gully. The regression analyses showed that soil Atterberg limits had significant and positive correlation with SOM, clay content, cationic exchange capacity and Fe d , significant and negative correlation with sand content and no obvious correlation with other properties. The results of this study revealed that soil Atterberg limits are an informative indicator to reflect the weathering degree of different weathering profiles of the collapsing gullies in the hilly granitic region.

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Section: Introductionmentioning

confidence: 99%

Soil Atterberg limits of different weathering profiles of the collapsing gullies in the hilly granitic region of southern China

et al. 2017

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“…Moody et al (2016) demonstrou que a condutividade hidráulica e a sorvidade diminuem com o aumento da severidade do incêndio numa floresta de Pinus pinea, em solo areiafranca, no colorado, EUA. Em áreas mediterrâneas, diversos autores verificaram que a temperatura do fogo e a sua duração, assim como outras variáveis podem afetar as taxas de infiltração da água no solo devido a alterações na sua hidrofobicidade (Jordán et al, 2013;Zavala et al, 2010) ou a alteração do sistema de poros como resultado da presença de cinzas e a destruição de agregados (Francos et al, 2015;Jordán et al, 2014;MataixSolera et al, 2011). (Almeida et al, 2016).…”

Section: Introductionunclassified

Impacto da carga combustível nas propriedades hidráulicas de um solo pós-incêndio em condições laboratoriais

Almeida

Fernandez

Martins

et al. 2017

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A navegação consulta e descarregamento dos títulos inseridos nas Bibliotecas Digitais UC Digitalis, UC Pombalina e UC Impactum, pressupõem a aceitação plena e sem reservas dos Termos e Condições de Uso destas Bibliotecas Digitais, disponíveis em https://digitalis.uc.pt/pt-pt/termos.Conforme exposto nos referidos Termos e Condições de Uso, o descarregamento de títulos de acesso restrito requer uma licença válida de autorização devendo o utilizador aceder ao(s) documento(s) a partir de um endereço de IP da instituição detentora da supramencionada licença.Ao utilizador é apenas permitido o descarregamento para uso pessoal, pelo que o emprego do(s) título(s) descarregado(s) para outro fim, designadamente comercial, carece de autorização do respetivo autor ou editor da obra. Na medida em que todas as obras da UC Digitalis se encontram protegidas pelo Código do Direito de Autor e Direitos Conexos e demais legislação aplicável, toda a cópia, parcial ou total, deste documento, nos casos em que é legalmente admitida, deverá conter ou fazer-se acompanhar por este aviso.Impacto da carga combustível nas propriedades hidráulicas de um solo pós-incêndio em condições laboratoriais Autor(es):

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“…Infiltration into water‐repellent soils may be delayed or inhibited during periods of time ranging from seconds to hours, days or weeks (Doerr et al ., ). Some impacts of soil WR are increased aggregate stability (Granged et al ., ; Mataix‐Solera et al ., ; Jordán et al ., ), enhanced runoff rates and erosion risk in forest (Doerr et al ., ; Shakesby et al ., ; Jordán et al ., ; Jordán et al ., ) or agricultural soils (González‐Peñaloza et al ., ; García‐Moreno et al ., ), the development of preferential flow paths (de Rooij, ; Jordán et al ., ; Zavala et al ., ; Granged et al ., ) and accelerated leaching of soil nutrients and pollutants through preferential flow paths (Blackwell, ; Li et al ., ; Müller et al ., ).…”

Section: Introductionmentioning

confidence: 99%

“…It has also been reported that soil properties may influence the development of soil WR , as soil microbiology, texture, moisture content, acidity and mineralogy (Dekker et al, 2000;Mataix-Solera et al, 2013;Mataix-Solera et al, 2014;Jiménez-Pinilla et al, 2016). Other factors, like fire, may have no impact, destroy or enhance soil WR Jordán et al, 2013;Pereira et al, 2015). Consequently, different authors have investigated the natural soil WR background in different areas as USA (Pierson et al, 2008;Doerr et al, 2009), Iran (Mirbabaei et al, 2013), Mexico , Spain (Rodríguez-Alleres et al, 2012;Zavala et al, 2014), South Africa (Scott, 2000) or Australia (Blackwell, 2000).…”

Section: Introductionmentioning

confidence: 99%

Spatial Gradients of Intensity and Persistence of Soil Water Repellency Under Different Forest Types in Central Mexico

et al. 2016

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Organic residues release hydrophobic compounds to the soil that may induce soil water repellency (WR), which may inhibit infiltration and increase runoff and soil loss rates. Although there are many studies on soil WR through the world, very few investigations have been conducted in Mexican areas. This paper studies the natural background of soil WR in soils from central Mexico under representative forest types, analyzing the spatial distribution of soil WR in relation with tree canopy, vegetation cover and main soil chemical (pH, CaCO3, organic C content and exchangeable cations) and physical properties (texture). The water drop penetration time and the ethanol tests were used to assess persistence and intensity of soil WR, respectively. Although soil WR was not related with soil properties, it decreased strongly from soil below the canopy of conifers to soil below oaks. When different types of vegetation cover were considered, the proportion of water‐repellent soil increased following the sequence: bare soil < shrubs and herbaceous plants < shrubs < trees from fir, fir‐pine‐oak and pine‐oak forest. We found an inverse relation with distance to the tree trunks, contributing to create a patchy pattern of soil WR, with soils under the canopy of conifers showing the most severe WR levels. The spatial distribution of soil WR is also conditioned by microclimatic gradients, as persistence and intensity of soil WR were usually lower in shaded areas (upslope transects from the tree trunks), where soil moisture content is expected to be higher on average through the year. Copyright © 2016 John Wiley & Sons, Ltd.

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Post-fire evolution of water repellency and aggregate stability in Mediterranean calcareous soils: A 6-year study

Cited by 14 publications

References 72 publications

Soil Atterberg limits of different weathering profiles of the collapsing gullies in the hilly granitic region of southern China

Soil Atterberg limits of different weathering profiles of the collapsing gullies in the hilly granitic region of southern China

Impacto da carga combustível nas propriedades hidráulicas de um solo pós-incêndio em condições laboratoriais

Spatial Gradients of Intensity and Persistence of Soil Water Repellency Under Different Forest Types in Central Mexico

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