<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The primary purpose of this work was to assess the persistence of water repellency in the surface horizon of coarse-textured soils under natural <italic>Quercus robur</italic> ecosystems, and <italic>Pinus pinaster</italic> and <italic>Eucalyptus globulus</italic> plantations, in the northwest of the Iberian Peninsula. Water repellency was determined by applying the water drop penetration test (WDPT) to soil samples collected from variable depths (0–40 cm). Measurements were made on field-moist samples obtained at the end of the dry period and on samples dried at 25ºC in the air. All soils exhibited very high (severe to extreme) water repellency in the topmost soil layer (0–5 cm) but no significant differences among the three plant species studied. Extreme persistence was observed down to 20 cm in the soils under eucalyptus and down to 10 cm in those under pine. The soils under oak were those exhibiting the highest variability in water repellency and the greatest decrease in it with increasing depth (especially in relation to soils under eucalyptus).</p><p>Water repellency exhibited significant positive correlation with the C content and C/N ratio of the soils. Soil water repellency was similar in the air-dried samples and field-moist samples.</p></abstract>

The primary purpose of this work was to assess the persistence of water repellency in the surface horizon of coarse-textured soils under natural Quercus robur ecosystems, and Pinus pinaster and Eucalyptus globulus plantations, in the northwest of the Iberian Peninsula. Water repellency was determined by applying the water drop penetration test (WDPT) to soil samples collected from variable depths (0–40 cm). Measurements were made on field-moist samples obtained at the end of the dry period and on samples dried at 25ºC in the air. All soils exhibited very high (severe to extreme) water repellency in the topmost soil layer (0–5 cm) but no significant differences among the three plant species studied. Extreme persistence was observed down to 20 cm in the soils under eucalyptus and down to 10 cm in those under pine. The soils under oak were those exhibiting the highest variability in water repellency and the greatest decrease in it with increasing depth (especially in relation to soils under eucalyptus).Water repellency exhibited significant positive correlation with the C content and C/N ratio of the soils. Soil water repellency was similar in the air-dried samples and field-moist samples.

Persistence of water repellency in coarse-textured soils under various types of forests in NW Spain

Departamento de Biología Vegetal y Ciencia del Suelo

Journal of Hydrology and Hydromechanics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The primary purpose of this work was to assess the persistence of water repellency in the surface horizon of coarse-textured soils under natural Quercus robur...

Persistence of water repellency in coarse-textured soils under various types of forests in NW Spain

Published Online: Mar 28, 2019

Page range: 129 - 134

Received: Jan 23, 2018

Accepted: Feb 23, 2018

DOI: https://doi.org/10.2478/johh-2018-0038

Keywords
Soil water repellency, Forest soils, Soil organic carbon, Soil moisture, NW Spain

© 2019 Elena Benito et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Persistence of water repellency in coarse-textured soils under various types of forests in NW Spain

Published Online: Mar 28, 2019

Page range: 129 - 134

Received: Jan 23, 2018

Accepted: Feb 23, 2018

DOI: https://doi.org/10.2478/johh-2018-0038

KeywordsSoil water repellency, Forest soils, Soil organic carbon, Soil moisture, NW Spain

© 2019 Elena Benito et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Soil water repellency, Forest soils, Soil organic carbon, Soil moisture, NW Spain