Pines influence hydrophysical parameters and water flow in a sandy soil

Lichner, Ľubomír; Capuliak, Jozef; Zhukova, Natalia; Holko, Ladislav; Czachor, Henryk; Kollár, Jozef

doi:10.2478/s11756-013-0254-7

Cited by 67 publications

(82 citation statements)

References 16 publications

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“…In the spell between the two sampling campaigns conducted at Ciavolo, the WDPT decreased by a not significant 14% in the duff layer and increased by a factor of 2.5 in the mineral subsoil (Table 3). The observed decrease of WDPT was probably a consequence of the well document decrease of SWR as the initial water content increases (i.e., de Jonge et al, 1999;Dekker and Ritsema, 1994;Fér et al, 2016;Lichner et al, 2013a). For the mineral layer, the hydrophobicity increased notwithstanding the soil water content did not change and the organic matter content decreased ( Table 2) thus suggesting that amphiphilic hydrophobic compounds were probably leached from the surface duff as consequence of rainfall that occurred in autumn (Vogelmann et al, 2013).…”

Section: Resultsmentioning

confidence: 90%

“…It is generally found to be most extreme when soils are dry, declining and eventually disappearing as soils become wet (e.g., de Jonge et al, 1999;Dekker and Ritsema, 1994;Fér et al, 2016;Lichner et al, 2013a;Vogelmann et al, 2013) although the soil moisture water repellency relationship is nevertheless complex (Doerr et al, 2000). When wet, amphiphilic compounds produced by plants are hydrophilic, but below a critical moisture threshold, their hydrophilic ends are bond strongly with one another and the soil particles, while hydrophobic ends are oriented towards the free space inducing water repellency (Ma'shum and Farmer, 1985;Tschapek, 1984).…”

Section: Introductionmentioning

confidence: 99%

“…When wet, amphiphilic compounds produced by plants are hydrophilic, but below a critical moisture threshold, their hydrophilic ends are bond strongly with one another and the soil particles, while hydrophobic ends are oriented towards the free space inducing water repellency (Ma'shum and Farmer, 1985;Tschapek, 1984). Severe water repellency is therefore expected following prolonged dry, warm summers that are typical of Mediterranean region with a transition from water repellent (hydrophobic) to wettable (hydrophilic) conditions during the autumn/winter months (Buczko et al, 2005;Lichner et al, 2013a;Rodríguez-Alleres et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Application of minidisk infiltrometer to estimate water repellency in Mediterranean pine forest soils

Alagna

Iovino

Bagarello

et al. 2017

Journal of Hydrology and Hydromechanics

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Assessment of soil water repellency (SWR) was conducted in the decomposed organic floor layer (duff) and in the mineral soil layer of two Mediterranean pine forests, one in Italy and the other in Spain, by the widely-used water drop penetration time (WDPT) test and alternative indices derived from infiltration experiments carried out by the minidisk infiltrometer (MDI). In particular, the repellency index (RI) was calculated as the adjusted ratio between ethanol and water soil sorptivities whereas the water repellency cessation time (WRCT) and the specifically proposed modified repellency index (RI m ) were derived from the hydrophobic and wettable stages of a single water infiltration experiment. Time evolution of SWR and vegetation cover influence was also investigated at the Italian site. All indices unanimously detected severe SWR conditions in the duff of the pine forests. The mineral subsoils in the two forests showed different wettability and the clay-loam subsoil at Ciavolo forest was hydrophobic even if characterized by organic matter (OM) content similar to the wettable soil of an adjacent glade. It was therefore assumed that the composition rather than the total amount of OM influenced SWR. The hydraulic conductivity of the duff differed by a factor of 3.8-5.8 between the two forested sites thus influencing the vertical extent of SWR. Indeed, the mineral subsoil of Javea showed wettable or weak hydrophobic conditions probably because leaching of hydrophobic compounds was slowed or prevented at all. Estimations of SWR according to the different indices were in general agreement even if some discrepancies were observed. In particular, at low hydrophobicity levels the SWR indices gathered from the MDI tests were able to signal sub-critical SWR conditions that were not detected by the traditional WDPT index. The WRCT and modified repellency index RI m yielded SWR estimates in reasonable agreement with those obtained with the more cumbersome RI test and, therefore, can be proposed as alternative procedures for SWR assessment.

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Section: Resultsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of minidisk infiltrometer to estimate water repellency in Mediterranean pine forest soils

Alagna

Iovino

Bagarello

et al. 2017

Journal of Hydrology and Hydromechanics

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“…Pinus is one of the genera that have received most attention for its influence in the development of soil WR as much in Mediterranean ecosystems (Doerr et al, 2000) as in other ones (Buczko et al, 2002;Lichner et al, 2012). However, the influence of Q. rotundifolia in WR has still not been described, although there are studies in which soil WR is associated with different species of Quercus evergreen trees (Doerr et al, 2000;Jordán et al, 2008) and shrubs (Arcenegui et al, 2008;Gimeno-García et al, 2011).…”

Section: Discussionmentioning

confidence: 98%

Biological and chemical factors controlling the patchy distribution of soil water repellency among plant species in a Mediterranean semiarid forest

et al. 2013

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Natural soil water repellency is a property that has already been observed in forest soils and is characterized by its patchydistribution. Ihere are many factors involved in its development. In this work, we have studied a large numberof chemical and biological factors underthe influence of differentplantspecies (Pinus halepensis, Quercus rotundifolia, Cistus albidus and Rosmarinus officinalis) to leam which has the greatest responsibility for its presence and persistence in the top-soillayer. We obselVed strong and significant correlations between ergosterol, giomalin related soil protein (GRSP), extractable lipids, soil organic matter (SOM) content and water repellency (WR). Our results suggested lipid fraction as the principal factor. Moreover, apart from Pinus, fungal biomass seems to be also related to the SOM content. Soil WR found under Pinus appears to be the most influenced by fungi. Quality of SOM, to be precise, lipid fraction could be responsible for WR and its relationship with fungal activity.

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“…Although they can be a source of waxes, crop residues can increase soil-water contents by functioning as a mulch (Yang et al 1996;García-Moreno et al 2013), moderating soil-surface temperatures and improving water infiltration over summer (Lichner et al 2012), and reducing evaporative losses (Yang et al 1996;Ji and Unger 2001). Yang et al (1996) observed that under stabilised ridges of water-repellent soil, soil temperatures at seed depth were 28C less and evaporation was reduced by 3 mm over 6 days compared with a level soil surface.…”

Section: No-tillage and Stubble Retentionmentioning

confidence: 99%

Management options for water-repellent soils in Australian dryland agriculture

Roper

Davies²,

Blackwell³

et al. 2015

Soil Res.

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Abstract. Water-repellent ('non-wetting') soils are a major constraint to agricultural production in southern and south-west Australia, affecting >10 Mha of arable sandy soils. The major symptom is dry patches of surface soil, even after substantial rainfall, directly affecting agricultural production through uneven crop and pasture germination, and reduced nutrient availability. In addition, staggered weed germination impedes effective weed control, and delayed crop and pasture germination increases the risk of wind erosion. Water repellency is caused by waxy organic compounds derived from the breakdown of organic matter mostly of plant origin. It is more prevalent in soils with a sandy surface texture; their low particle surface area : volume ratio means that a smaller amount of waxy organic compounds can effectively cover a greater proportion of the particle surface area than in a fine-textured soil. Water repellency commonly occurs in sandy duplex soils (Sodosols and Chromosols) and deep sandy soils (Tenosols) but can also occur in Calcarosols, Kurosols and Podosols that have a sandy surface texture. Severity of water repellency has intensified in some areas with the adoption of no-till farming, which leads to the accumulation of soil organic matter (and hence waxy compounds) at the soil surface. Growers have also noticed worsening repellency after 'dry' or early sowing when break-of-season rains have been unreliable.Management strategies for water repellency fall into three categories: (i) amelioration, the properties of surface soils are changed; (ii) mitigation, water repellency is managed to allow crop and pasture production; (iii) avoidance, severely affected or poorly producing areas are removed from annual production and sown to perennial forage. Amelioration techniques include claying, deep cultivation with tools such as rotary spaders, or one-off soil inversion with mouldboard ploughs. These techniques can be expensive, but produce substantial, long-lasting benefits. However, they carry significant environmental risks if not adopted correctly. Mitigation strategies include furrow-seeding, application of wetting agents (surfactants), no-till with stubble retention, on-row seeding, and stimulating natural microbial degradation of waxy compounds. These are much cheaper than amelioration strategies, but have smaller and sometimes inconsistent impacts on crop production. For any given farm, economic analysis suggests that small patches of water repellency might best be ameliorated, but large areas should be treated initially with mitigation strategies. Further research is required to determine the long-term impacts of cultivation treatments, seeding systems and chemical and biological amendments on the expression and management of water repellency in an agricultural context.

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Pines influence hydrophysical parameters and water flow in a sandy soil

Cited by 67 publications

References 16 publications

Application of minidisk infiltrometer to estimate water repellency in Mediterranean pine forest soils

Application of minidisk infiltrometer to estimate water repellency in Mediterranean pine forest soils

Biological and chemical factors controlling the patchy distribution of soil water repellency among plant species in a Mediterranean semiarid forest

Management options for water-repellent soils in Australian dryland agriculture

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