A comparison of three measuring methods for estimating the saturated hydraulic conductivity in the shallow subsurface layer of mountain podzols

High variability of soil erosion and hydrological processes in Mediterranean hillslope vineyards (Montes de Málaga, Spain)

“…A large number of instruments and methods are available to measure the infiltration, the permeability and Kf s (Archer et al, 2013;Bagarello et al, 2014;Cerdà, 1997;Gupta et al, 2006Gupta et al, , 1993Gwenzi et al, 2011;Huang et al, 2016Huang et al, , 2014Jačka et al, 2014;Kodešová et al, 2010;MacDonald et al, 2012;Peter and Ries, 2013;Wu et al, 1992). In this research, a Guelph permeameter (GP) was applied.…”

Variación espacio-temporal de los procesos hidrológicos del suelo en viñedos con elevadas pendientes (Valle del Ruwer-Mosela, Alemania)

“…En este sentido, para áreas de estudio como los viñedos, que suelen estar cultivados en laderas con pendientes pronunciadas y con una elevada pedregosidad, probablemente el instrumento más útil para medir la permeabilidad, la transmisividad, la infiltración o la conductividad hidráulica sea el permeámetro de Guelph (GP). Su funcionalidad ha sido probada y comparada con otros instrumentos, tales como el simulador de lluvia o los infiltrómetros en numerosas ocasiones (Wu et al, 1992;Gupta et al, 1993Gupta et al, , 2006Kodešová et al, 2010;Gwenzi et al, 2011;MacDonald et al, 2012;Archer et al, 2013;Bagarello et al, 2014;Jačka et al, 2014;Huang et al, 2014Huang et al, , 2016. Su funcionamiento se rige a un principio modificado de la botella de Mariotte, el cual envía una constante descarga de agua que actúa tridimensionalmente en forma de columna vertical, que actúa dentro de un orificio cilíndrico en el suelo (Elrick y Reynolds, 1992;Reynolds y Elrick, 2002;Reynolds y Lewis, 2012).…”

The layering of a mountain podzol can strongly affect the distribution of infiltrated water in the soil profile

“…The site is located in the high-altitude part of the Šumava National Park, near the Czech-German border (see Figure 1). A description of the site is also given by Jačka et al (2012Jačka et al ( , 2014Jačka et al ( , 2016. The site is covered predominantly with the following plant species: Calamagrostis villosa, Picea abies, Avenella flexuosa, Vaccinium myrtillus, Luzula sylvatica, Athyrium distentifolium.…”

“…continuity and tortuosity of the porous system, the occurrence of macropores). Direct measurements of K s are therefore irreplaceable, although it is a very difficult task to measure K s properly (Bagarello et al, 2014(Bagarello et al, , 2016Jačka et al, 2014;Reynolds et al, 2000). The coefficient of variation (CV) of measured K s within a single soil layer is often higher than 100%, even at the plot scale (Jačka et al, 2016(Jačka et al, , 2014Webb et al, 2000).…”

“…Direct measurements of K s are therefore irreplaceable, although it is a very difficult task to measure K s properly (Bagarello et al, 2014(Bagarello et al, , 2016Jačka et al, 2014;Reynolds et al, 2000). The coefficient of variation (CV) of measured K s within a single soil layer is often higher than 100%, even at the plot scale (Jačka et al, 2016(Jačka et al, , 2014Webb et al, 2000). Parameter K s therefore exhibits high spatial variability (Fodor et al, 2011;Kutílek and Nielsen, 1994), and it is necessary to have a sufficient number of replicates in order to obtain a representative mean value of K s for each soil layer (Pennock et al, 2008).…”