The measurements of saturated hydraulic conductivity of the forest floor under deciduous forest

Zvala, Anton; Orfánus, Tomáš; Čelková, A.

doi:10.31577/ahs-2020-0021.01.0013

Cited by 2 publications

(2 citation statements)

References 9 publications

(8 reference statements)

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“…This undoubtedly resulted also in higher saturated and unsaturated hydraulic conductivities (Ks and K) in these horizons relative to the rest of the pedon. Recent studies by Zvala et al (2020) indicated that saturated hydraulic conductivity could be very high in the forest floor, particularly in the loose litter layer typical of rich deciduous forests. The authors further emphasised that saturated hydraulic conductivity decreased in the organic horizon from top to bottom, with increasing decomposition and aggregation of organic material.…”

Section: Discussionmentioning

confidence: 99%

Study on the physical properties of a forest Glossic Retisol developed from loess in the Lublin Upland, SE Poland

Bryk

2023

Soil Sci. Ann.

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Clay-illuvial soils with argic horizon and developed from loess or other silty deposits constitute high-quality arable land owing to favourable physical and chemical properties. There are thus numerous reports on such soils, considering their structure, compaction, erosion, water and air properties. However, there is still a lack of quantitative studies on structure and physical properties on analogous soils under forests. The aim of this research was therefore a comprehensive description of the physical state, including structure, water and air properties, of a forest Retisol developed from loess. Morphographic, morphological and morphometric parameters of structure, selected physicochemical and water and air properties and also relationships among the obtained parameters were analysed for genetic horizons O, Ah, AE, E, Bt/E, Bt, BtC and C. The fi eld survey and soil structure images indicated that the studied forest soil had an undisturbed sequence of genetic horizons. The soil structure was shaped by soil fl ora and fauna causing bioturbation. Qualitative and quantitative structure analysis revealed that the O horizon had a loose arrangement, the Ah horizon had an aggregate crumb structure, the AE horizon had zones of an aggregate crumb structure and non-aggregate structure (fi ssured or with channels), while the remaining mineral horizons showed essentially a non-aggregate structure with varying proportions and sizes of planes and biogenic pores (i.e. cracked or fi ssured structure and structure with channels, respectively). The morphometric and physicochemical parameters facilitated a detailed analysis of the Retisol's physical state. The Retisol's structure type and degree of aggregate development directly infl uenced its hydraulic conductivity and water retention capacity. Therefore, under simulated precipitation, the soil water content and effective saturation varied mainly in the topsoil (O-E horizons) and virtually no changes were observed in the subsoil (Bt-C horizons). The research resulted in a comprehensive analysis of the physicochemical and morphometric parameters, their relationships, and structure images that were previously unavailable in other studies, covering the physical state of the entire pedon of a forest Retisol. The results obtained may serve, for example, as a reference (control) for analogous soils located in non-forest ecosystems and become an element in space-for-time substitution scenarios aimed at assessing the intensity of anthropogenic transformation.

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Section: Discussionmentioning

confidence: 99%

Study on the physical properties of a forest Glossic Retisol developed from loess in the Lublin Upland, SE Poland

Bryk

2023

Soil Sci. Ann.

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“…The parameters of soil water retention curves θ R , α, n were computed in the model RETC version: 6.xx (van Genuchten et al 1991) The values of saturated hydralic conductivity (Ks) were determined in the authors' previous work (Zvala et al 2020). The continous polygon of SWRC was estimated in MS Excel (see Fig.…”

Section: )mentioning

confidence: 99%

Water retention of the organic soil horizon in a central European deciduous forest

Zvala¹,

Šurda²,

Kidová³

et al. 2021

geogrcas

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Water retention of the organic soil horizon in a central European deciduous forestThe organic horizon of forest soil (OHFS) under deciduous forest is formed on the surface of the forest soil and is composed of a varied dead plant and animal material. This material gradually decomposes into recognizable layers of OHFS: litter, duff-1 and duff-2. Different soil water retention (SWR) can be expected from different layers of the OHFS. The determination of SWR was performed on the Tempe cells and pressure plate apparatus. We analyzed the SWR in the layers litter, duff-1, duff-2 of the OHFS. Statistically significant differences between all three examined layers of forest soil were examined. The analysis of the individually determined soil water retention curves (SWRC) proved that the litter layer of the OHFS had a maximal SWR at a water potential close to zero and a minimal value was estimated for the duff-2 layer. According to the results of our experiment the SWR decreases with the increasing depth of the organic horizon in the order litter>duff-1>duff-2. We determined potential areas with geographically similar conditions for the creation of the OHFS for SWR as in the study area.

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The measurements of saturated hydraulic conductivity of the forest floor under deciduous forest

Cited by 2 publications

References 9 publications

Study on the physical properties of a forest Glossic Retisol developed from loess in the Lublin Upland, SE Poland

Study on the physical properties of a forest Glossic Retisol developed from loess in the Lublin Upland, SE Poland

Water retention of the organic soil horizon in a central European deciduous forest

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