Lessivage as a major process of soil formation: A revisitation of existing data

Quénard, Laurence; Samouëlian, Anatja; Laroche, Bertrand; Cornu, Sophie

doi:10.1016/j.geoderma.2011.07.031

Cited by 88 publications

(45 citation statements)

References 58 publications

(87 reference statements)

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“…The mo bi li za tion and de po si tion are com plex com bina tion of dis per sion (and mo bi li za tion) and floc cu la tion (caus ing de po si tion) pro cesses of clay colloids. Ac cord ing to Quenard et al (2011), mi gra tion of soil par ti cles is pos si ble when the val ues of soil pH in the E ho ri zon range from 4.5 to 6.5 and are higher than 6.5 in the B ho ri zon. Con se quently, pH be tween 4.5 and 6.5 fa vour dis per sion of soil colloids (in clud ing clay par ti cles) and their eluviation down the pro file.…”

Section: Resultsmentioning

confidence: 96%

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The influence of litho- and pedogenic processes on Luvisols formation of selected area of Vistula glaciation

Jaworska

Dąbkowska-Naskręt

Kobierski

2014

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1 Uni ver sity of Tech nol ogy and Life Sci ences, Fac ulty of Ag ri cul ture and Bio tech nol ogy, De part ment of Soil Sci ence and Soil Pro tec tion, Bernardyñska 6, 85-029 Bydgoszcz, Po land Jaworska, H., D¹bkowska-Naskrêt, H., Kobierski, M., 2014. The in flu ence of litho-and pedogenic pro cesses on Luvisols forma tion of se lected area of Vistula Gla ci ation. Geo log i cal Quar terly, 58 (4): 685-694, doi: 10.7306/gq.1175The ob jec tive of the study was to de ter mine the ef fect of litho-and pedogenic pro cesses on soils of the se lected area of Vistula Gla ci ation, based on pro file dis tri bu tion of unweathered com po nents such as ti ta nium, zir co nium and sil ica in re la tion to their mor phol ogy, min er al ogy, micromorphology and physicochemical prop er ties. The pre dom i nant type of soil in the study area are Luvisols. Anal y sis of tex ture al lowed to clas sify the in ves ti gated soils to sandy silts with loamy ma te rial as their sub soil. In the bulk soil sil ica dom i nates and its con tent was in the range 71.4 to 88.6%. The con tent of TiO 2 within the pro files is fairy sim i lar, with out clear pat terns in the pro file dis tri bu tion. The to tal con tent of zir co nium in the sam ples was in range of 95.13 to 212.15 mg ´ kg -1 . In the pro file dis tri bu tion of zir co nium higher con tent of Zr was ob served in the up per ho ri zons com pared to the top layer in all of the ana lysed pro files, in di cat ing dif fer ent or i gin of soil ma te rial. Sta tis ti cal anal y sis showed pos i tive cor re lation be tween the to tal con tent of zir co nium and the con tent of frac tion AE 0.05-0.002 mm (cor re la tion co ef fi cient value: 0.692384; sig nif i cance level -p < 0.05) and neg a tive cor re la tion be tween zir co nium and clay con tent (cor re la tion co ef fi cient: -0.668157; p < 0.05). The lith o logic dis con ti nu ity within pro files of the in ves ti gated soils has been ad di tion ally has proved by X-ray anal y sis of the clay frac tion. The micromorphological anal y sis con firmed the com plex gen e sis of the stud ied soils. The results of the study clearly showed an over all inhomogeneity and strat i fi ca tion of the soils. Stud ied Luvisols did not form as weather ing prod uct of ho mo ge neous bed rock. Changes in granulometric and chem i cal com po si tion within soil pro files are the con se quence of translocation of clay frac tion dur ing lessivage as well as lith o logic dis con ti nu ity of the solum.

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Section: Resultsmentioning

confidence: 96%

“…Quenard et al (2011) re ported that lessivage con sists of ver ti cal trans fer of fine par ti cles rang ing in size from less than 2 to 10 µm.…”

Section: Resultsmentioning

confidence: 97%

The influence of litho- and pedogenic processes on Luvisols formation of selected area of Vistula glaciation

Jaworska

Dąbkowska-Naskręt

Kobierski

2014

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“…Besides the low soil flocculation be a prerequisite to lessivage, according to Quénard et al (2011) the translocation of clays is favored in humid weather (when the precipitation is higher than evapotranspiration at least 150 mm) and in planar or sub-planar surfaces. Therefore, the humid weather of Porto Alegre and the location of P1 profile (summit-shoulder transition) in the landscape allow lessivage process.…”

Section: Resultsmentioning

confidence: 99%

Soil Variability in Different Landscape Positions in the Porto Alegre Botanical Garden, Southern Brazil

et al. 2015

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Knowledge of soil characteristics in areas where activities related to the environment are developed, such as Porto Alegre Botanical Garden (JB-PoA), is a fundamental condition for the sustainable use of this natural resource. The objective of this study was to characterize, classify and evaluate some issues about soil formation in Porto Alegre Botanical Garden, as well as relate their distribution on the landscape according to environmental characteristics. For the morphological description and collecting samples four profiles were selected (P1 to P4), located in the summit-shoulder transition, backslope, footslope and toeslope, respectively. Granulometric distribution of the P1 and P3 profiles indicated sharp textural gradient, with presence of textural and "plânico" B horizons, respectively, according to Brazilian System of Soil Classification. There is predominance of low values of pH, and low base saturation, with exception of P4, indicating probable deposition of solution material at this area. The Fed/Fes relationship was greater in the profile located in the summit-shoulder transition (P1), indicating higher weathering. The Feo/Fed relationship increased in P3 and P4 profiles, indicating greater participation of iron oxides of low crystallinity in reducing environment. The occurrence of some pedogenic processes may be inferred, like lessivage in P1 (Ultic Hapludalf), due to clay skins and higher values of fine clay:total clay relationship in subsurface; ferrolysis and gleization, by low pH value and high Feo/Fed relationship in E and EB horizons of P3 (Oxyaquic Hapludalf), being the last also present in P4 (Humaqueptic Endoaquent), indicating gleization occurrence.

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“…The Bt horizon showed strong to moderately developed structures and angular and subangular blocks with an increase in clay content, characterizing the lessivage process (Quénard et al, 2011). The predominant moist color was yellow, and the amount of saprolite fragments was smaller than in the underlying layers.…”

Section: Identification Of the Boundary Between Soil And Saprolite Inmentioning

confidence: 98%

Boundary between Soil and Saprolite in Alisols in the South of Brazil

Pedron

Oliveira

Dalmolin

et al. 2015

Rev. Bras. Ciênc. Solo

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Despite numerous studies conducted on the lower limit of soil and its contact with saprolite layers, a great deal of work is left to standardize identification and annotation of these variables in the field. In shallow soils, the appropriately noting these limits or contacts is essential for determining their behavior and potential use. The aims of this study were to identify and define the field contact and/or transition zone between soil and saprolite in profiles of an Alisol derived from fine sandstone and siltstone/claystone in subtropical southern Brazil and to subsequently validate the field observations through a multivariate analysis of laboratory analytical data. In the six Alisol profiles evaluated, the sequence of horizons found was A, Bt, C, and Cr, where C was considered part of the soil due to its pedogenetic structure, and Cr was considered saprolite due to its rock structure. The morphological properties that were determined in the field and that were different between the B and C horizons and the Cr layer were color, structure, texture, and fragments of saprolite. According to the test of means, the properties that support the inclusion of the C horizon as part of the soil are sand, clay, water-dispersible clay, silt/clay ratio, macroporosity, total porosity, resistance to penetration, cation exchange capacity, fe extracted by DCB, Al, h+Al, and cation exchange capacity of clay. The properties that support the C horizon as a transition zone are silt, Ca, total organic C, and fe extracted by ammonium oxalate. Discriminant analysis indicated differences among the three horizons evaluated.

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Lessivage as a major process of soil formation: A revisitation of existing data

Cited by 88 publications

References 58 publications

The influence of litho- and pedogenic processes on Luvisols formation of selected area of Vistula glaciation

The influence of litho- and pedogenic processes on Luvisols formation of selected area of Vistula glaciation

Soil Variability in Different Landscape Positions in the Porto Alegre Botanical Garden, Southern Brazil

Boundary between Soil and Saprolite in Alisols in the South of Brazil

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