Spatial variability of penetration data on Russian plots in different land use

Meshalkina, Joulia; Stein, Alfred; Dmitriev, Ye.A.

doi:10.1016/0933-3630(95)00005-3

Cited by 14 publications

(12 citation statements)

References 4 publications

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“…This is in agreement with Meshalkina et al (1995), who found asynchronous changes of averages and standard deviations accompanied by a change of distribution of soil penetrability. Likewise, Kutiel et al (2000) described non-linear relationships between the variances of organic matter, soil moisture, and penetration depth and the averages in areas under visitors' pressure.…”

Section: Variability Of Soil Propertiessupporting

confidence: 93%

“…It was dried for 24 h at 70°C and weighed. Soil surface compaction by means of penetration depth of a stick thrust into the soil by means a weight (235 g) dropped from the top of the stick (50 cm high) towards its base (Karpachevsky et al 1980;Meshalkina et al 1995) was measured in all sampling points.…”

Section: Methodsmentioning

confidence: 99%

“…Patterning was found for many soil properties (e.g. organic matter content (Lavee et al 1998;Bochet et al 1999;Smit 1999;Zhevelev and Sarah 2002), soil moisture (Belsky et al 1989;Star et al 1995;Gorres et al (Zinke 1962;Perez 1995;Star et al 1995), and penetration resistance (Meshalkina et al 1995;Bochet et al 1999). The patterning phenomenon was explained by effects of: (a) eco-geomorphological characteristics (Lavee et al 1998;Blagoveschensky and Samsonova 1999;Zhevelev and Sarah 2002;Sarah 2004); (b) surface rock fragment size and position (Lavee and Poesen 1991;Lavee et al 1998); (c) trees (Zinke 1962;Gersper and Holowaychuk 1971;Belsky et al 1989;Graham et al 1995;Amionti et al 2000); (d) shrubs (Bochet et al 1999;Sarah 2002); (e) herbaceous vegetation and their roots' distribution (Sanchez and Puigdefabrigas 1994;Perez 1995;Bruelcheide and Udelhoven 2005); (f) mezo-and micro-organism activity (Star et al 1995;Gorres et al 1997).…”

Section: Analysis Of Data Distributionmentioning

confidence: 99%

“…However, spatial variability of soil can be interpreted as an extremely important ecosystem characteristic for the following reasons: (a) It reflects the pattern of ecosystems (Mapa and Kumaragamage 1996;Gorres et al 1997;Blagoveschensky and Samsonova 1999;Zhevelev and Sarah 2002;Bruelheide and Udelhoven 2005); (b) It defines the sampling design (Chung et al 1995;Star et al 1995;Prasolova et al 2000;Zhevelev and Sarah 2002); (c) It indicates ecosystem changes (Chevallier et al 1994;Meshalkina et al 1995;Smith 1999). Liddle and Greig-Smith (1975), Marion and Cole (1996), Kutiel et al (2000), and Kutiel and Zhevelev (2001) showed that visitors' pressure influenced the variability of Ao, litter biomass, organic matter content, soil moisture, and soil compaction.…”

Section: Introductionmentioning

confidence: 99%

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The effect of visitors’ pressure on the spatial variability of sandy soil in an urban parks in Tel Aviv

Zhevelev

Sarah

2008

Environ Monit Assess

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The effect of visitors' pressure on the spatial variability of soil properties was investigated in three open green areas in Tel Aviv. Six types of micro-environments were chosen: under oak and pine tree canopy with low (OL and PL) and high (OH and PH) visitors' pressure; herbaceous area without visitors' pressure (HE); and resting area under high visitors' pressure (RA). For each micro-environment soil samples were collected from the upper 0-5 cm depth for organic matter content and moisture determination. Before sampling, soil surface compaction and litter biomass were measured. Soil properties were affected by visitors' pressure and by the type of micro-environment. Soil organic matter content and soil moisture proved significantly higher under oak trees at low visitors' pressure. Average litter biomass significantly decreased with increasing visitors' pressure in the tree micro-environments. Average penetration depth decreased significantly with increased visitors' pressure in all micro-environments. In all the cases where averages significantly decreased, variance significantly decreased too, but the coefficient of variations increased. This means that variances changed slower than averages. Changes in averages were accompanied by a change of data population structure, which indicated more soil spatial homogeneity under high visitors' pressure. The data from different intervals of data population of soil properties demonstrated the different sensitivity to visitors' pressure.

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Section: Variability Of Soil Propertiessupporting

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Analysis Of Data Distributionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effect of visitors’ pressure on the spatial variability of sandy soil in an urban parks in Tel Aviv

Zhevelev

Sarah

2008

Environ Monit Assess

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“…Penetrometers with a 2-kg hammer and standardized cone tip dimensions have been proposed for agricultural soils (Herrick and Jones, 2002;Vanags et al, 2004). Meshalkina et al (1995) proposed a pocket instrument with a 50-g hammer and a flat tip to explore the first 5 cm of the soil, but the limitation in the depth explored and the lack of a standardized cone tip make it difficult to compare measurements with other devices. There are no reports in the literature that explicitly propose and validate penetrometers for forest soils.…”

Section: Introductionmentioning

confidence: 99%

Un Penetrómetro Dinámico Para Evaluar La Resistencia Mecánica en Suelos Forestales

García

Gómez-Guerrero

Velázquez-Martínez

et al. 2011

Rchscfa

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RESUMENSe diseñó un penetrómetro cónico de impacto para evaluar la resistencia mecánica de los suelos forestales. El equipo diseñado es ligero ya que sólo pesa 4.1 kg, preciso porque se validó en campo y laboratorio, portátil porque desensamblado se puede cargar en el chaleco de un operador de campo, y práctico porque la capacitación para su uso es sencilla y es adecuado para trabajos de inventarios forestales y de suelo. Los resultados mostraron que el uso del prototipo es viable en diferentes ecosistemas, ya que detectó el perfil de resistencia mecánica del suelo superficial en bosque de pino, bosque de encino y vegetación de matorral. En laboratorio se prepararon muestras de diferente densidad aparente y contenido de humedad para probar la sensibilidad del penetrómetro. El equipo diseñado es sensible a los cambios de resistencia mecánica a densidades bajas (0.6-1.0 Mg·m-3), que son comunes en los suelos forestales y cambios de humedad del suelo (5-25 %). Con la validación del protocolo se encontró que una serie de 10 impactos genera un dato confiable sobre la resistencia mecánica del suelo superficial. ABSTRACTA dynamic cone penetrometer (DCP) was designed for measuring soil penetration resistance in forest soils. The designed DCP is lightweight as it weighs only 4.1 kg, accurate because it was validated in field and laboratory testing, portable because disassembled it fits into a cruising vest, and practical because it is very easy to use. It is suitable for forest and soil inventory work. Test results showed that use of the designed prototype is practical in different ecosystems, as it was used to detect the mechanical resistance profile of surface soil in pine and oak forests and shrubland. Soil samples with different bulk density and moisture content were prepared in the laboratory to test the sensitivity of the penetrometer. The designed DCP is sensitive to changes in soil penetration resistance at low bulk densities (0.6-1.0 Mg·m-3 ), which are common in forest soils, and changes in soil moisture (5-25 %). With the validation protocol for its use, it was found that ten successive blows are enough to generate reliable data on the mechanical resistance of the surface soil. PALABRAS CLAVE:Resistencia mecánica, penetrómetro dinámico, física de suelos, densidad aparente, suelos forestales.

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Role of the coefficient of uniformity on the California bearing ratio, penetration resistance, and small strain stiffness of coarse arctic soils

Kim

Hong

Lee

2019

Cold Regions Science and Technology

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Spatial variability of penetration data on Russian plots in different land use

Cited by 14 publications

References 4 publications

The effect of visitors’ pressure on the spatial variability of sandy soil in an urban parks in Tel Aviv

The effect of visitors’ pressure on the spatial variability of sandy soil in an urban parks in Tel Aviv

Un Penetrómetro Dinámico Para Evaluar La Resistencia Mecánica en Suelos Forestales

Role of the coefficient of uniformity on the California bearing ratio, penetration resistance, and small strain stiffness of coarse arctic soils

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