Search results for "soil hydrophobicity"

showing 3 items of 3 documents

Relationships between soil water repellency and microbial community composition under different plant species in a Mediterranean semiarid forest

2014

Abstract Soil water repellency (SWR) can influence many hydrological soil properties, including water infiltration, uneven moisture distribution or water retention. In the current study we investigated how variable SWR persistence in the field is related to the soil microbial community under different plant species (P. halepensis, Q. rotundifolia, C. albidus and R. officinalis) in a Mediterranean forest. The soil microbial community was determined through phospholipid fatty acids (PLFA). The relationships between microbiological community structure and the soil properties pH, Glomalin Related Soil Protein (GRSP) and soil organic matter (SOM) content were also studied. Different statistical …

BiohydrologyMediterranean climatesoil hydrophobicityTA Engineering (General). Civil engineering (General)Phospholipids fatty acidsActinobacteriaBotanymedicinebiohydrologyGlomalin Related Soil ProteinWater Science and TechnologyFluid Flow and Transfer Processesglomalin related soil proteinbiologyphospholipids fatty acidsMechanical EngineeringSoil organic matterCommunity structureactinobacteriaMicrobial community structureHydraulic engineeringbiology.organism_classificationWater retentionActinobacteriaGlomalinMicrobial population biologyAgronomymicrobial community structureSoil waterbiology.proteinEnvironmental sciencemedicine.symptomTC1-978Soil hydrophobicity
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Comparing different application procedures of the water drop penetration time test to assess soil water repellency in a fire affected Sicilian area

2019

Abstract The Water Drop Penetration Time (WDPT) technique was applied in two subsequent years (2016 and 2017) to check surface soil water repellency (SWR) in a Sicilian mountain area affected by a wildfire on June 2016. A total of 93 sites were sampled and from 3 to 100 droplets were used to characterize a site. The detected SWR varied with the severity of the wildfire, being practically absent in the unburnt control area and slight to extreme in the burnt areas. The percentage of extremely repellent sites increased with wildfire severity. SWR vanished one year after the passage of the fire in sites where fire severity was moderate but it persisted in the case of a severe wildfire. In gener…

Hydrology010504 meteorology & atmospheric sciencesWater drop penetration time test04 agricultural and veterinary sciencesPenetration (firestop)Spatial distribution01 natural sciencesField samplingSoil water040103 agronomy & agricultureControl area0401 agriculture forestry and fisheriesEnvironmental scienceSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliSmall-scale spatial variabilitySoil hydrophobicity0105 earth and related environmental sciencesEarth-Surface Processes
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Modelling the effects of a bushfire on erosion in a Mediterranean basin

2007

A bushfire occurred in the Asinaro River basin in July 1998. The basin area is 55 km2 and about 74% of the whole area was set on fire. The aim of this paper is to test the influence of fire on both soil erosion and the spatial distribution of the areas characterized by the greatest sediment yield values. The RUSLE model and a spatial disaggregation criterion for sediment delivery processes (SEDD model) were used to test the effects of the bushfire. The basin was divided into 854 morphological units for calculating the topographic factor. The RUSLE climatic factor R was calculated using daily rainfall data. The soil erodibility factor was determined by sampling at sites distributed over the …

soil hydrophobicityfiresediment yield
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