Soil structure and soil hydraulic properties of Haplic Luvisol used as arable land and grassland

Kodešová, Radka; Jirku, Veronika; Kodeš, Vít; Mühlhanselová, Marcela; Nikodem, Antonín; Žigová, Anna

doi:10.1016/j.still.2010.09.007

Cited by 89 publications

(60 citation statements)

References 29 publications

(38 reference statements)

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“…The authors found that soil water retention was significantly higher under permanent grass cover compared to arable soil due to the capillary soil-pore system. The soil water retention curve shapes in the study indicated that the soil, which has not been periodically tilled, contained larger fractions of large capillary pores (pores corresponding to a matrix potential range of −0.2 and 7 kPa) [50]. These pores play key role in water retention [51], soil aeration [52], transport processes [53], plant nutrients distribution [54] and organism activity [40,55,56].…”

Section: Effect Of Land Usementioning

confidence: 90%

“…The authors concluded that the cultivated areas in alpine regions were likely to store less water and can experience higher erosion rates than non-cultivated areas. Kodesová et al [50] observed larger saturated soil water content and larger retention ability of grassland compared to arable land, based on water retention curves of Haplic Luvisol (Table 3). The authors found that soil water retention was significantly higher under permanent grass cover compared to arable soil due to the capillary soil-pore system.…”

Section: Effect Of Land Usementioning

confidence: 98%

“…These pores play key role in water retention [51], soil aeration [52], transport processes [53], plant nutrients distribution [54] and organism activity [40,55,56]. In general, land management has been shown to impact both macropores and matrix pores in the tilled layer, while the grassland soil indicated well reestablished stable soil structure with favorable soil hydraulic properties with higher porosity and soil water retention, higher fraction of large capillary pores, and lower fraction of gravitational pores [50,57]. Changes in soil macropores and matrix pores can greatly influence the water flow [58] that consequently affects nutrient transport through the soil profile [59].…”

Section: Effect Of Land Usementioning

confidence: 99%

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Effects of Land Use and Management on SoilHydraulic Properties

et al. 2015

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Soil hydraulic properties are among the most important parameters that determine soil quality and its capability to serve the ecosystem. Land use can significantly influence soil properties, including its hydraulic conditions; however, additional factors, such as changes in climate (temperature and precipitation), can further influence the land use effects on soil hydraulic properties. In order to develop possible adaptation measures and mitigate any negative effects of land use and climatic changes, it is important to study the impact of land use and changes in land use on soil hydraulic properties. In this paper, we summarize recent studies examining the effect of land use/land cover and the associated changes in soil hydraulic properties, mainly focusing on agricultural scenarios of cultivated croplands and different tillage systems.

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Section: Effect Of Land Usementioning

confidence: 90%

Section: Effect Of Land Usementioning

confidence: 98%

Section: Effect Of Land Usementioning

confidence: 99%

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Effects of Land Use and Management on SoilHydraulic Properties

et al. 2015

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“…Aggregate coatings and biopore walls are characteristic soil structural features (e.g., Gerke and Köhne, 2002;Kodešová, 2009;Kodešová et al, 2011Kodešová et al, , 2015Rogasik et al, 2014) that are of great importance when attempting to describe preferential flow and transport processes in soils (e.g., Gerke, 2012;Kodešová, 2009;Kodešová et al, 2008Kodešová et al, , 2009Kodešová et al, , 2010Kodešová et al, , 2012. Clay-organic coatings often cover aggregates and biopores in the clay-illuviation Bt-horizons of Luvisols (IUSS Working Group WRB, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Soil aggregates in the Bt1 and Bt2 horizons were covered by clay and organic matter coatings. The coatings development in these horizons has been affected by the agricultural management (Jirků et al, 2013;Kodešová et al, 2011) causing frequent aggregate destruction in the top soil and accelerated clay migration within the soil profile. Studies by Kodešová et al (2009) and Kočárek et al (2010) showed that water flow and contaminant (in this case herbicide) transport was accelerated in both Bt horizons, due to preferential flow caused by soil aggregation and the restrictive impact of clay and organic matter coatings covering soil aggregates on water and solute transfer between macropores and soil matrix.…”

Section: Introductionmentioning

confidence: 99%

Droplet infiltration dynamics and soil wettability related to soil organic matter of soil aggregate coatings and interiors

Fér

Leue

Kodešová

et al. 2016

Journal of Hydrology and Hydromechanics

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Abstract:The organo-mineral coatings of soil aggregates, cracks, and biopores control sorption and macropore-matrix exchange during preferential flow, in particular in the clay-illuvial Bt-horizon of Luvisols. The soil organic matter (SOM) composition has been hypothesized to explain temporal changes in the hydraulic properties of aggregate surfaces. The objective of this research was to find relations between the temporal change in wettability, in terms of droplet infiltration dynamics, and the SOM composition of coated and uncoated aggregate surfaces. We used 20 to 40 mm sized soil aggregates from the Bt2 horizon of a Haplic Luvisol from loess that were (i) coated, (ii) not coated (both intact), and (iii) aggregates from which coatings were removed (cut). The SOM composition of the aggregate surfaces was characterized by infrared spectroscopy in the diffuse reflection mode (DRIFT). A potential wettability index (PWI) was calculated from the ratio of hydrophobic and hydrophilic functional groups in SOM. The water drop penetration times (WDPT) and contact angles (CA) during droplet infiltration experiments were determined on dry and moist aggregate samples of the three types. The decrease in the CA with time was described using the power function (CA(t) = at -b ). For dry aggregates, the WDPT values were larger for coated as compared to uncoated regions on the aggregate surfaces, and increased with increasing PWI value (R 2 = 0.75). The a parameter was significantly related to the WDPT (R 2 = 0.84) and to the PWI (R 2 = 0.64). The relations between the b parameter and the WDPT (R 2 = 0.61) and the PWI (R 2 = 0.53) were also significant. The WDPT values of wet soil aggregates were higher than those of dry aggregates due to high water contents, which limited the droplet infiltration potential. At the wet aggregate surfaces, the WDPT values increased with the PWI of the SOM (R 2 = 0.64). In contrast to dry samples, no significant relationships were found between parameters a or b of CA(t) and WDPT or PWI for wet aggregate surfaces. The results suggest that the effect of the SOM composition of coatings on surface wettability decreases with increasing soil moisture. In addition to the dominant impact of SOM, the wettability of aggregate surfaces could be affected by different mineralogical compositions of clay in coatings and interiors of aggregates. Particularly, wettability of coatings could be decreased by illite which was the dominant clay type in coatings. However, the influence of different clay mineral fractions on surface wettability was not due to small number of measurements (2 and 1 samples from coatings and interiors, respectively) quantified.

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Reasons for Filter Bag Failure and Method Development to Improve its Life Span

Patnaik

Anandjiwala

2016

Chem Eng & Technol

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Reasons for filter bag failure at steel plants were analyzed and a suitable approach to overcome such problems is proposed. Clean and used filter bags were tested to evaluate tensile and bursting strengths and air permeability properties. In order to simulate the behavior of the filter bags under acidic conditions normally encountered in actual working environment, an acid dew point test was conducted on the clean bags. The structural changes in all bags were determined by scanning electron microscopy. A significant reduction in tensile and bursting strengths was observed after acidic treatment. In order to improve the durability of the bags, they were coated with a mixture of acrylic binder and nanoclay. Commercial filter bags as well as the developed samples showed improved resistance without any failure behavior.

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Soil structure and soil hydraulic properties of Haplic Luvisol used as arable land and grassland

Cited by 89 publications

References 29 publications

Effects of Land Use and Management on SoilHydraulic Properties

Effects of Land Use and Management on SoilHydraulic Properties

Droplet infiltration dynamics and soil wettability related to soil organic matter of soil aggregate coatings and interiors

Reasons for Filter Bag Failure and Method Development to Improve its Life Span

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