Pedogenesis and Variability in Soil Properties in a Floodplain of a Semiarid Environment in Southwestern Sicily (Italy).

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Abstract

We performed a pedological study of the variability in soils in a floodplain area of a semiarid region in southwestern Sicily. The objectives of our research were to (i) investigate the role of parent material, erosion, and distribution processes on soil pedogenesis and horizon differentiation; (ii) evaluate the statistical distribution of soil properties; and (iii) interpret these distributions in terms of pedogenic and other processes. Our results showed that not all soil properties examined followed a normal distribution and that even when logtransformed, the degree of normality of the soil salinity data did not improve. Furthermore, principal component analysis was performed to investigate the role of parent material and erosion and distribution processes on soil pedogenesis and horizon differentiation. Although all soils tested had developed on alluvium, great variability was found among them, mostly related to the grain size of the substrates. Soils that had developed on finer alluvium had higher clay content, cation exchange capacity, exchangeable bases, soil salinity, exchangeable sodium percentage, and sometimes organic carbon accumulation with depth because of hydromorphic conditions and chemical stabilization by Ca++ ions. Soils that had developed on coarser deposits showed a clear differentiation between the topsoil and subsoil in terms of a decrease in clay content from the surface soil to the subsoil. The accumulation of clay on the surface of a floodplain can result in a high risk of loss of productivity because of the significant relationship between clay content, hydromorphic conditions, and exchangeable sodium percentage
Lingua originaleEnglish
pagine (da-a)614-623
Numero di pagine10
RivistaSoil Science
Volume175
Stato di pubblicazionePublished - 2010

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Sicily
floodplains
floodplain
soil properties
soil property
Italy
soil
pedogenesis
alluvium
parent material
clay
subsoil
alluvial deposit
soil formation
soil salinity
erosion
statistical distribution
exchangeable sodium
exchangeable cations
semiarid region

All Science Journal Classification (ASJC) codes

  • Soil Science

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title = "Pedogenesis and Variability in Soil Properties in a Floodplain of a Semiarid Environment in Southwestern Sicily (Italy).",
abstract = "We performed a pedological study of the variability in soils in a floodplain area of a semiarid region in southwestern Sicily. The objectives of our research were to (i) investigate the role of parent material, erosion, and distribution processes on soil pedogenesis and horizon differentiation; (ii) evaluate the statistical distribution of soil properties; and (iii) interpret these distributions in terms of pedogenic and other processes. Our results showed that not all soil properties examined followed a normal distribution and that even when logtransformed, the degree of normality of the soil salinity data did not improve. Furthermore, principal component analysis was performed to investigate the role of parent material and erosion and distribution processes on soil pedogenesis and horizon differentiation. Although all soils tested had developed on alluvium, great variability was found among them, mostly related to the grain size of the substrates. Soils that had developed on finer alluvium had higher clay content, cation exchange capacity, exchangeable bases, soil salinity, exchangeable sodium percentage, and sometimes organic carbon accumulation with depth because of hydromorphic conditions and chemical stabilization by Ca++ ions. Soils that had developed on coarser deposits showed a clear differentiation between the topsoil and subsoil in terms of a decrease in clay content from the surface soil to the subsoil. The accumulation of clay on the surface of a floodplain can result in a high risk of loss of productivity because of the significant relationship between clay content, hydromorphic conditions, and exchangeable sodium percentage",
author = "Salvatore Raimondi and Vito Barbera and Eliseo Perrone",
year = "2010",
language = "English",
volume = "175",
pages = "614--623",
journal = "Soil Science",
issn = "0038-075X",
publisher = "Lippincott Williams and Wilkins",

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TY - JOUR

T1 - Pedogenesis and Variability in Soil Properties in a Floodplain of a Semiarid Environment in Southwestern Sicily (Italy).

AU - Raimondi, Salvatore

AU - Barbera, Vito

AU - Perrone, Eliseo

PY - 2010

Y1 - 2010

N2 - We performed a pedological study of the variability in soils in a floodplain area of a semiarid region in southwestern Sicily. The objectives of our research were to (i) investigate the role of parent material, erosion, and distribution processes on soil pedogenesis and horizon differentiation; (ii) evaluate the statistical distribution of soil properties; and (iii) interpret these distributions in terms of pedogenic and other processes. Our results showed that not all soil properties examined followed a normal distribution and that even when logtransformed, the degree of normality of the soil salinity data did not improve. Furthermore, principal component analysis was performed to investigate the role of parent material and erosion and distribution processes on soil pedogenesis and horizon differentiation. Although all soils tested had developed on alluvium, great variability was found among them, mostly related to the grain size of the substrates. Soils that had developed on finer alluvium had higher clay content, cation exchange capacity, exchangeable bases, soil salinity, exchangeable sodium percentage, and sometimes organic carbon accumulation with depth because of hydromorphic conditions and chemical stabilization by Ca++ ions. Soils that had developed on coarser deposits showed a clear differentiation between the topsoil and subsoil in terms of a decrease in clay content from the surface soil to the subsoil. The accumulation of clay on the surface of a floodplain can result in a high risk of loss of productivity because of the significant relationship between clay content, hydromorphic conditions, and exchangeable sodium percentage

AB - We performed a pedological study of the variability in soils in a floodplain area of a semiarid region in southwestern Sicily. The objectives of our research were to (i) investigate the role of parent material, erosion, and distribution processes on soil pedogenesis and horizon differentiation; (ii) evaluate the statistical distribution of soil properties; and (iii) interpret these distributions in terms of pedogenic and other processes. Our results showed that not all soil properties examined followed a normal distribution and that even when logtransformed, the degree of normality of the soil salinity data did not improve. Furthermore, principal component analysis was performed to investigate the role of parent material and erosion and distribution processes on soil pedogenesis and horizon differentiation. Although all soils tested had developed on alluvium, great variability was found among them, mostly related to the grain size of the substrates. Soils that had developed on finer alluvium had higher clay content, cation exchange capacity, exchangeable bases, soil salinity, exchangeable sodium percentage, and sometimes organic carbon accumulation with depth because of hydromorphic conditions and chemical stabilization by Ca++ ions. Soils that had developed on coarser deposits showed a clear differentiation between the topsoil and subsoil in terms of a decrease in clay content from the surface soil to the subsoil. The accumulation of clay on the surface of a floodplain can result in a high risk of loss of productivity because of the significant relationship between clay content, hydromorphic conditions, and exchangeable sodium percentage

UR - http://hdl.handle.net/10447/58658

M3 - Article

VL - 175

SP - 614

EP - 623

JO - Soil Science

JF - Soil Science

SN - 0038-075X

ER -