The influence of stoniness and canopy properties on soil water content distribution: simulation of water movement in forest stony soil

Novák, Viliam; Kňava, Karol

doi:10.1007/s10342-011-0589-y

Cited by 33 publications

(16 citation statements)

References 14 publications

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“…The saturated hydraulic conductivity in our study was lowest for the rock-fragment content of 50%. Novák and Kňava (2012) also demonstrated that stones in mountainous forest soil reduced the effective hydraulic conductivity of the soil. Rock fragments in the soil slow the movement of water to the roots, which decreases transpiration.…”

Section: Tablementioning

confidence: 99%

“…The simulation showed that excluding 30% of the pebbles in a stony horizon underestimated the soil available water content (SAWC) by 5% for chert pebbles and by 33% for chalk pebbles. Novák and Kňava (2012) demonstrated that the presence of stones can decrease soil water-holding capacity and hydraulic conductivity, which can decrease the availability of soil water for trees. (Tetegan et al, 2011) to calculate the SAWC at a regional scale (36 200 ha).…”

Section: Introductionmentioning

confidence: 99%

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Effect of rock fragments content on water consumption, biomass and water-use efficiency of plants under different water conditions

Shao

Liu

2016

Ecological Engineering

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a b s t r a c tThe proportion of rock fragments in soil affects water availability and therefore the characteristics of plants. The objective of this study was to evaluate the effect of rock-fragment content on plant water consumption, biomass, growth and water-use efficiency (WUE) under different water conditions. Four gravimetric treatments of rock-fragment contents (0, 10, 30 and 50%) and four treatments of water content were tested in sandy loamy soils. The water contents of the rock-free soil were 15-19% (80-100% of field capacity), 11-15% (60-80% of field capacity), 9-11% (47-60% of field capacity) and 6-9% (32-47% of field capacity). Transpiration, plant height, basal stem diameter and biomass of korshinsk peashrubs in the treatments were measured and compared. Plants grown in the soil with rock fragments transpired less, especially under well-watered conditions. The mean daily transpiration of plants in the soils with 30 and 50% rock-fragment contents was 18% (P = 0.021) and 34% (P = 0.001) lower, respectively, in 2014, and 25% (P = 0.008) and 31% (P = 0.002) lower, respectively, in 2015 relative to the soil without rock fragments and was not lower in the soil with 10% rock fragments. Plant height, basal stem diameter and biomass did not differ significantly between rock-fragment contents of 0 and 30% but were lower at 50%. WUE, the ratio between total transpiration and biomass, was highest at 30% and then decreased at 50%. Increasing plant water stress could thus improve WUE. The rock fragments in the soil had significant effects on plant water consumption, biomass, growth and WUE. Optimizing the rock-fragment content is necessary when the relationships between plants and water in stony ecosystems are evaluated.

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Section: Tablementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of rock fragments content on water consumption, biomass and water-use efficiency of plants under different water conditions

Shao

Liu

2016

Ecological Engineering

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“…Forest soils, especially those located in mountainous regions, often contain larger fractions of rock fragments (RF) defined by particle diameters above 2 mm. Stoniness, defined as relative volume or relative mass of RF, is an important forest soil property affecting infiltration, percolation, water retention characteristics, evapotranspiration, and soil temperatures ( e.g ., Ma and Shao , 2008; Zhongjie et al, 2008; Novák and Kňava , 2012; Hlaváčiková et al, 2015). The presence of rock fragments can reduce hydraulic conductivity of a soil by decreasing the cross‐sectional area for water flow and by increasing the curvatures of the flow paths ( e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Up‐to‐date, only a few studies address the impact of the stoniness correction of soil hydraulic properties of stony forest soils on the performance of water balance models ( e.g. , Novák and Kňava , 2012; Coppola et al, 2013). These studies emphasized the need of a stoniness correction for an improvement of the model performance.…”

Section: Introductionmentioning

confidence: 99%

Impact of stoniness correction of soil hydraulic parameters on water balance simulations of forest plots

Wegehenkel

Wagner

Amoriello

et al. 2016

J. Plant Nutr. Soil Sci.

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Long‐term estimates of the water balance of forests are essential for forest ecosystem analysis. Such estimates can be achieved by using numerical modelling approaches for water balance calculations. These modelling approaches require data, e.g., for the description of the hydraulic properties of forest soils using soil water retention or hydraulic conductivity functions. However, these functions are usually valid only for fine‐earth conditions. However, many forest soils, especially those located in mountainous regions, contain larger fractions of gravel and rock fragments in the soil profiles. In our study, the impact of stoniness correction of soil hydraulic functions on the performance of a numerical water balance modelling approach was evaluated by using continuously measured time series of daily throughfall, soil water contents and pressure heads provided from three different ICP Forests Level II plots with high stoniness in the soil profiles. These measured data were compared with the corresponding model outputs. The application of stoniness correction of the soil hydraulic functions improved the model performance in terms of the Nash‐Sutcliffe Index NS and the coefficient of determination R2. This indicated the need for such a correction.

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“…Mountain soils in the High Tatra Mountains contain a lot of rock fragments. To quantify hydrological processes, it was necessary to consider the impact of RF on water flow dynamics in the soil (Novák and Kňava, 2012).…”

Section: Introductionmentioning

confidence: 99%

The influence of stony soil properties on water dynamics modeled by the HYDRUS model

Hlaváčiková

Novák

Kostka

et al. 2018

Journal of Hydrology and Hydromechanics

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Stony soils are composed of two fractions (rock fragments and fine soil) with different hydrophysical characteristics. Although stony soils are abundant in many catchments, their properties are still not well understood. This manuscript presents an application of the simple methodology for deriving water retention properties of stony soils, taking into account a correction for the soil stoniness. Variations in the water retention of the fine soil fraction and its impact on both the soil water storage and the bottom boundary fluxes are studied as well. The deterministic water flow model HYDRUS-1D is used in the study. The results indicate that the presence of rock fragments in a moderate-to-high stony soil can decrease the soil water storage by 23% or more and affect the soil water dynamics. Simulated bottom fluxes increased or decreased faster, and their maxima during the wet period were larger in the stony soil compared to the non-stony one.

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The influence of stoniness and canopy properties on soil water content distribution: simulation of water movement in forest stony soil

Cited by 33 publications

References 14 publications

Effect of rock fragments content on water consumption, biomass and water-use efficiency of plants under different water conditions

Effect of rock fragments content on water consumption, biomass and water-use efficiency of plants under different water conditions

Impact of stoniness correction of soil hydraulic parameters on water balance simulations of forest plots

The influence of stony soil properties on water dynamics modeled by the HYDRUS model

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