Soils of the Chaco Region

The Argentinian Chaco region belongs to an extensive ecoregion called “Great Chaco”, characterized by ample plains of fluvial aggradation and linked to the formation of large alluvial fans. The climate is semi-arid to humid, with marked dry season and important seasonal water deficit. The vegetation...

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Main Authors: Moretti, Lucas Martin, Morras, Hector, Pereyra, Fernando X., Schulz, Guillermo
Other Authors: Rubio, Gerardo
Format: Capítulo de libro
Language:Inglés
Published: Springer 2024
Subjects:
Online Access:http://hdl.handle.net/20.500.12123/17581
https://link.springer.com/chapter/10.1007/978-3-319-76853-3_10
https://doi.org/10.1007/978-3-319-76853-3
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author Moretti, Lucas Martin
Morras, Hector
Pereyra, Fernando X.
Schulz, Guillermo
author2 Rubio, Gerardo
author_browse Moretti, Lucas Martin
Morras, Hector
Pereyra, Fernando X.
Rubio, Gerardo
Schulz, Guillermo
author_facet Rubio, Gerardo
Moretti, Lucas Martin
Morras, Hector
Pereyra, Fernando X.
Schulz, Guillermo
author_sort Moretti, Lucas Martin
collection INTA Digital
description The Argentinian Chaco region belongs to an extensive ecoregion called “Great Chaco”, characterized by ample plains of fluvial aggradation and linked to the formation of large alluvial fans. The climate is semi-arid to humid, with marked dry season and important seasonal water deficit. The vegetation includes deciduous dry forests, shrubs and grassland steppes, palm groves, woodlands and savannas. The soil parent materials are fluvial, lacustrine and eolian (e.g. primary and reworked loess) sediments. The distribution of soils has three clearly defined areas: a semi-arid central-Western sector, enclosed by a humid narrow strip to the West, and a more extended humid area to the East, close to Paraná–Paraguay rivers. According to the available cartography, the dominant soils are Mollisols and Alfisols, followed by Entisols, Inceptisols and Aridisols. Vertisols were also identified in the West and in the south-eastern border of the region. The main pedogenetic processes are basically melanisation and argilluviation in the wettest areas and melanisation, calcification, alkalinization and salinization in the driest areas. On the other hand, hydromorphic and vertisolization processes occur in closed depressions. The soils of the Chaco region are ver y susceptible to wind and water erosion, especially during the dry season and in bare soils. In general, the soils are devoted to the production of cotton, sugar cane and to the livestock industry. In the southern part of the region, agriculture of cereal and oilseed grains becomes dominant.
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institution Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina)
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spelling INTA175812024-04-30T10:24:28Z Soils of the Chaco Region Moretti, Lucas Martin Morras, Hector Pereyra, Fernando X. Schulz, Guillermo Rubio, Gerardo Lavado, Raul Silvio Pereyra, Fernando X. Soil Cartography Soil Genesis Suelo Cartografía Génesis del Suelo Great Chaco Gran Chaco The Argentinian Chaco region belongs to an extensive ecoregion called “Great Chaco”, characterized by ample plains of fluvial aggradation and linked to the formation of large alluvial fans. The climate is semi-arid to humid, with marked dry season and important seasonal water deficit. The vegetation includes deciduous dry forests, shrubs and grassland steppes, palm groves, woodlands and savannas. The soil parent materials are fluvial, lacustrine and eolian (e.g. primary and reworked loess) sediments. The distribution of soils has three clearly defined areas: a semi-arid central-Western sector, enclosed by a humid narrow strip to the West, and a more extended humid area to the East, close to Paraná–Paraguay rivers. According to the available cartography, the dominant soils are Mollisols and Alfisols, followed by Entisols, Inceptisols and Aridisols. Vertisols were also identified in the West and in the south-eastern border of the region. The main pedogenetic processes are basically melanisation and argilluviation in the wettest areas and melanisation, calcification, alkalinization and salinization in the driest areas. On the other hand, hydromorphic and vertisolization processes occur in closed depressions. The soils of the Chaco region are ver y susceptible to wind and water erosion, especially during the dry season and in bare soils. In general, the soils are devoted to the production of cotton, sugar cane and to the livestock industry. In the southern part of the region, agriculture of cereal and oilseed grains becomes dominant. Instituto de Suelos Fil: Moretti, Lucas Martín. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina Fil: Morras, Héctor José María. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina Fil: Pereyra, Fernando X. Servicio Geológico Minero (SEGEMAR); Argentina Fil: Schulz, Guillermo Andrés. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Suelos; Argentina 2024-04-30T10:14:33Z 2024-04-30T10:14:33Z 2019 info:ar-repo/semantics/parte de libro info:eu-repo/semantics/bookPart info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/17581 https://link.springer.com/chapter/10.1007/978-3-319-76853-3_10 978-3-319-76853-3 2211-1255 2211-1263 https://doi.org/10.1007/978-3-319-76853-3 eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Springer The soils of Argentina / Editors: Gerardo Rubio, Raul S. Lavado, Fernando X. Pereyra. Springer, 2019. Chapter 10, p. 149-160
spellingShingle Soil
Cartography
Soil Genesis
Suelo
Cartografía
Génesis del Suelo
Great Chaco
Gran Chaco
Moretti, Lucas Martin
Morras, Hector
Pereyra, Fernando X.
Schulz, Guillermo
Soils of the Chaco Region
title Soils of the Chaco Region
title_full Soils of the Chaco Region
title_fullStr Soils of the Chaco Region
title_full_unstemmed Soils of the Chaco Region
title_short Soils of the Chaco Region
title_sort soils of the chaco region
topic Soil
Cartography
Soil Genesis
Suelo
Cartografía
Génesis del Suelo
Great Chaco
Gran Chaco
url http://hdl.handle.net/20.500.12123/17581
https://link.springer.com/chapter/10.1007/978-3-319-76853-3_10
https://doi.org/10.1007/978-3-319-76853-3
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AT morrashector soilsofthechacoregion
AT pereyrafernandox soilsofthechacoregion
AT schulzguillermo soilsofthechacoregion