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Water
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Soil Water Repellency
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Soil Water Repellency

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydrology".

Deadline for manuscript submissions: closed (31 December 2020) | Viewed by 7453

Special Issue Editors

Prof. Pavel Dlapa

E-Mail Website
Guest Editor
Department of Soil Science, Faculty of Natural Sciences, Comenius University, Mlynska dolina B-2, Ilkovicova 6, 842 15 Bratislava, Slovakia
Interests: hydrology; soil physics; soil chemistry; land degradation
Dr. Tomáš Orfánus

E-Mail Website
Guest Editor
Institute of Hydrology, Slovak Academy of Sciences, Dubravska cesta 9, 841 04 Bratislava, Slovakia
Interests: soil hydrology; ecohydrology; water resources; hydrological and water resource modelling

Special Issue Information

Dear Colleagues,

Soil water repellency is a manifestation of interactions between water and hydrophobic organic compounds in the soil. These interactions can prevent water infiltration to soil capillary pores or slow infiltration in sub-critical water repellency. The resultant severity of water repellency depends on soil’s physical, chemical, and biological properties, and external factors such as climate, land-use, vegetation, and wildfires. This repellency can have significant consequences, including increased susceptibility to surface runoff and erosion, increased drought stress, uneven plant germination, reduced agricultural production, preferential finger-flow, and accelerated contaminant transport.

This Special Issue is open to an advanced research on the causes and consequences of soil water repellency and sub-critical water repellency, including new insights into the theory of water repellent soil infiltration and the modelling of the processes involved. Contributions describing novel methods of assessing soil water repellency at different scales and research results for the alleviation of the severity of soil water repellency are also welcome.

Prof. Pavel Dlapa
Dr. Tomáš Orfánus
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Soil water repellency
  • Sub-critical water repellency
  • Hydrophobicity
  • Water infiltration
  • Preferential flow
  • Surface runoff
  • Soil erosion
  • Mathematical modelling.

Published Papers (2 papers)

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Research

16 pages, 2664 KiB  
Article
The Impacts of Vineyard Afforestation on Soil Properties, Water Repellency and Near-Saturated Infiltration in the Little Carpathians Mountains
by Andrej Hrabovský, Pavel Dlapa, Artemi Cerdà and Jozef Kollár
Water 2020, 12(9), 2550; https://doi.org/10.3390/w12092550 - 12 Sep 2020
Cited by 12 | Viewed by 2968
Abstract
Vineyards are a 7000-year-old land-use tradition and both management and abandonment have result in altered soil properties. These have a great effect on water resources and soil services, and this inspired our investigation into the effects of land-use and land-use change on soils [...] Read more.
Vineyards are a 7000-year-old land-use tradition and both management and abandonment have result in altered soil properties. These have a great effect on water resources and soil services, and this inspired our investigation into the effects of land-use and land-use change on soils in the Modra wine-growing region in South-western Slovakia. Ten topsoil samples were taken at each of the seven research sites (n = 70) on granite parent material in cultivated and afforested vineyards and original forest soils. Laboratory analyses included determination of soil texture, organic carbon content, soil pH, and water repellency. This was supplemented by infiltration measurements under near-saturated conditions at the vineyard and afforested study sites. Studied soils have a low clay content and a high proportion of sand. The vineyard soils have significantly higher pH than the forest and afforested soils because the naturally acidic soils have been limed. The forest and afforested soils have similar properties, with higher organic carbon content. This makes them strongly to extremely water repellent and contrasts sharply with the wettability of cultivated vineyard soils. One afforested site, however, was less acidic and therefore was considered transitional between forest and vineyard soils. Our infiltration measurements established the influence of soil water repellency on the infiltration process, and our results highlighted that the infiltration rate in the vineyard soils was significantly higher than in afforested soils. The infiltration rate also gradually increased over time in afforested soils due to decreasing water repellency. Physically impossible negative sorptivity values in afforested soils were noted because of changes in water repellency during the infiltration process. Finally, we conclude that soil afforestation results in increased soil water repellency and a subsequent reduction in the infiltration rate at the matrix scale. Full article
(This article belongs to the Special Issue Soil Water Repellency)
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12 pages, 1194 KiB  
Article
The Relationship between Soil Moisture and Soil Water Repellency Persistence in Hydrophobic Soils
by Mohamed Bayad, Henry Wai Chau, Stephen Trolove, Jim Moir, Leo Condron and Moussa Bouray
Water 2020, 12(9), 2322; https://doi.org/10.3390/w12092322 - 19 Aug 2020
Cited by 11 | Viewed by 3855
Abstract
In this work, we modelled the response of soil water repellency (SWR) persistence to the decrease in moisture in drying soils, and we explored the implication of soil particle size distribution and specific surface area on the SWR severity and persistence. A new [...] Read more.
In this work, we modelled the response of soil water repellency (SWR) persistence to the decrease in moisture in drying soils, and we explored the implication of soil particle size distribution and specific surface area on the SWR severity and persistence. A new equation for the relationship between SWR persistence and soil moisture (θ) is described in this paper. The persistence of SWR was measured on ten different hydrophobic soils using water drop penetration time (WDPT) at decreasing levels of gravimetric water content. The actual repellency persistence showed a sigmoidal response to soil moisture decrease, where Ra(θ)=Rp/1+eδ(θ−θc). The suggested equation enables one to model the actual SWR persistence (Ra) using θ, the potential repellency (Rp) and two characteristic parameters related to the shape of the response curve. The two parameters are the critical soil moisture θc, where the Ra increase rate reaches its maximum, and the parameter δ affecting the steepness of the curve at the inflexion point of the sigmoidal curve. Data shows that both soil carbon and texture are controlling the potential SWR in New Zealand pastures. Full article
(This article belongs to the Special Issue Soil Water Repellency)
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