Analysis of Water Retention Capacity for Select Forest Soils in Poland

Assessment of the possibility of applying selected pedotransfer functions for indicating the retention of forest soils in Poland

“…Forest soils comprising the population used to develop the regression model (Hewelke et al, 2015) are characterized by statistical measures presented in Table 1. The obtained values of the spread, that is of the differences between maximal and minimal values, as well as the values of the coeffi cient of variation characterizing dispersion, indicate the diversity of the analyzed soils in terms of their retention properties.…”

“…Measured and calculated values TAW for analysed forest soils by van Genuchten's model RYSUNEK 3. Obliczone i pomierzone wartości TAW dla analizowanych gleb leśnych według modelu van Genuchtena ent measurement series identical to that of the regression model (Hewelke et al, 2015) was used. For the linear dependency between the measured values of TAW and those calculated according to van Genuchten's model (Fig.…”

“…The fi rst model, described by Hewelke et al (2015), was designed for podzolic and brown soils found in Poland beneath pine and spruce stands. The prepared multiple regression equations make it possible to predict the characteristic states of volumetric water content with seven values of the matric potential expressed by the pF indicator, on the basis of known predefi ned bulk density of soil, specifi c density, and contents of organic matter and selected particle fractions.…”

“…These methods are referred to as pedotransfer functions, and their usefulness, especially for large-scale projects and pilot studies, has been indicated by, i.a., Pachepsky & Rawls (2004), and Vereecken et al (2010). Studies on pedotransfer functions were carried out by, i.a., Brooks & Corey (1964), Trzecki (1974Trzecki ( , 1976, Gupta & Larson (1979), van Genuchten (1980, Varallyay & Mironienko (1979), Varallyay, Rajkai, Pachepsky & Shcherbakov (1982), Rawls & Brakensiek (1982), Schaap, Leij & van Genuchten (2001), Carsel & Parrish (1988, Wösten, Lilly, Nemes & Le Bas (1999), Gnatowski, Szatyłowicz, Brandyk & Kechavarzi (2010), Rezaee, Shabanpour & Davatgar (2011), Skalova, Čistý & Bezák (2011), Hewelke, Gnatowski & Żakowicz (2013 and Hewelke, Gnatowski, Hewelke, Tyszka & Żakowicz (2015). A compilation of models describing pF curves has been presented, i.a., in the works of Walczak, Witkowska-Walczak & Sławiński (2004), Żakowicz, Hewelke & Gnatowski (2009), Guber & Pachepsky (2010), and Hewelke et al (2015).…”

Chemical Composition of Soil Contaminated with Tri- and Hexavalent Chromium Amended with Compost, Zeolite and Calcium Oxide

“…Serving as a filter protecting against containments, the soil is also an intermediary in their transport; moreover, the accumulation of heavy metals in soil can lead to significant changes in their physicochemical properties (Hewelke et al 2014;Hewelke et al 2015;Radziemska and Fronczyk 2015). The organic matter found in soils forms stable compounds, decreasing their uptake by plants.…”