Vadose zone transport in dry forests of central Argentina: role of land use

Autores
Santoni, Celina Sofia; Jobbagy Gampel, Esteban Gabriel; Contreras, S.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Most sedimentary plains occupied by semiarid woody ecosystems have low groundwater recharge rates and high vadose zone salt accumulation. Their cultivation has often led to drainage of water below root zone, displacement of solutes, and rising water tables, affecting, in most extreme cases, long-term viability of agriculture. To explore this possibility in semiarid plains of South America, we characterized vadose flow using chloride data in dry forests of central Argentina, in an area that has been subject to intense deforestation and agricultural expansion during the last century. We selected five paired stands under natural dry forests and dryland agriculture (sites deforested ≥30 years ago) and sampled sediments (n = 3 boreholes) down to 6 m depth. Profiles were consistently dry and salty in forest stands with chloride inventories (0–6 m) of 150 g/m2 to 9 × 103 g/m2. Under cultivation 78% to 99% of the chloride stock was leached, and total water storage was ≥30% higher than in the dry forest, with soil water content close to field capacity. Estimates of groundwater recharge rates based on residual moisture flux approach (cumulative chloride versus cumulative water curves) suggested maximum values of 0.33 to 128.4 mm/yr for dry forest and agriculture, respectively. At agricultural stands recharge was also estimated using chloride front displacement, yielding minimum values ≥5.3 mm/yr. While the long-term impact of cultivation on regional groundwater hydrology is still unclear in the region, our findings suggest that land salinization processes are possible and need careful monitoring in areas with high agricultural expansion.
Fil: Santoni, Celina Sofia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis ; Argentina
Fil: Jobbagy Gampel, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis ; Argentina
Fil: Contreras, S.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis ; Argentina. University of Texas at Austin; Estados Unidos
Materia
Vadose zone
Recharge
Agriculture
Semiarid woody ecosystem
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/15529
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/15529
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Vadose zone transport in dry forests of central Argentina: role of land useSantoni, Celina SofiaJobbagy Gampel, Esteban GabrielContreras, S.Vadose zoneRechargeAgricultureSemiarid woody ecosystemhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Most sedimentary plains occupied by semiarid woody ecosystems have low groundwater recharge rates and high vadose zone salt accumulation. Their cultivation has often led to drainage of water below root zone, displacement of solutes, and rising water tables, affecting, in most extreme cases, long-term viability of agriculture. To explore this possibility in semiarid plains of South America, we characterized vadose flow using chloride data in dry forests of central Argentina, in an area that has been subject to intense deforestation and agricultural expansion during the last century. We selected five paired stands under natural dry forests and dryland agriculture (sites deforested ≥30 years ago) and sampled sediments (n = 3 boreholes) down to 6 m depth. Profiles were consistently dry and salty in forest stands with chloride inventories (0–6 m) of 150 g/m2 to 9 × 103 g/m2. Under cultivation 78% to 99% of the chloride stock was leached, and total water storage was ≥30% higher than in the dry forest, with soil water content close to field capacity. Estimates of groundwater recharge rates based on residual moisture flux approach (cumulative chloride versus cumulative water curves) suggested maximum values of 0.33 to 128.4 mm/yr for dry forest and agriculture, respectively. At agricultural stands recharge was also estimated using chloride front displacement, yielding minimum values ≥5.3 mm/yr. While the long-term impact of cultivation on regional groundwater hydrology is still unclear in the region, our findings suggest that land salinization processes are possible and need careful monitoring in areas with high agricultural expansion.Fil: Santoni, Celina Sofia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis ; ArgentinaFil: Jobbagy Gampel, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis ; ArgentinaFil: Contreras, S.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis ; Argentina. University of Texas at Austin; Estados UnidosAmerican Geophysical Union2010-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/15529Santoni, Celina Sofia; Jobbagy Gampel, Esteban Gabriel; Contreras, S.; Vadose zone transport in dry forests of central Argentina: role of land use; American Geophysical Union; Water Resources Research; 46; 10; 10-2010; 1-100043-1397enginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1029/2009WR008784/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1029/2009WR008784info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:38:10Zoai:ri.conicet.gov.ar:11336/15529instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:38:10.591CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Vadose zone transport in dry forests of central Argentina: role of land use
title Vadose zone transport in dry forests of central Argentina: role of land use
spellingShingle Vadose zone transport in dry forests of central Argentina: role of land use
Santoni, Celina Sofia
Vadose zone
Recharge
Agriculture
Semiarid woody ecosystem
title_short Vadose zone transport in dry forests of central Argentina: role of land use
title_full Vadose zone transport in dry forests of central Argentina: role of land use
title_fullStr Vadose zone transport in dry forests of central Argentina: role of land use
title_full_unstemmed Vadose zone transport in dry forests of central Argentina: role of land use
title_sort Vadose zone transport in dry forests of central Argentina: role of land use
dc.creator.none.fl_str_mv Santoni, Celina Sofia
Jobbagy Gampel, Esteban Gabriel
Contreras, S.
author Santoni, Celina Sofia
author_facet Santoni, Celina Sofia
Jobbagy Gampel, Esteban Gabriel
Contreras, S.
author_role author
author2 Jobbagy Gampel, Esteban Gabriel
Contreras, S.
author2_role author
author
dc.subject.none.fl_str_mv Vadose zone
Recharge
Agriculture
Semiarid woody ecosystem
topic Vadose zone
Recharge
Agriculture
Semiarid woody ecosystem
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Most sedimentary plains occupied by semiarid woody ecosystems have low groundwater recharge rates and high vadose zone salt accumulation. Their cultivation has often led to drainage of water below root zone, displacement of solutes, and rising water tables, affecting, in most extreme cases, long-term viability of agriculture. To explore this possibility in semiarid plains of South America, we characterized vadose flow using chloride data in dry forests of central Argentina, in an area that has been subject to intense deforestation and agricultural expansion during the last century. We selected five paired stands under natural dry forests and dryland agriculture (sites deforested ≥30 years ago) and sampled sediments (n = 3 boreholes) down to 6 m depth. Profiles were consistently dry and salty in forest stands with chloride inventories (0–6 m) of 150 g/m2 to 9 × 103 g/m2. Under cultivation 78% to 99% of the chloride stock was leached, and total water storage was ≥30% higher than in the dry forest, with soil water content close to field capacity. Estimates of groundwater recharge rates based on residual moisture flux approach (cumulative chloride versus cumulative water curves) suggested maximum values of 0.33 to 128.4 mm/yr for dry forest and agriculture, respectively. At agricultural stands recharge was also estimated using chloride front displacement, yielding minimum values ≥5.3 mm/yr. While the long-term impact of cultivation on regional groundwater hydrology is still unclear in the region, our findings suggest that land salinization processes are possible and need careful monitoring in areas with high agricultural expansion.
Fil: Santoni, Celina Sofia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis ; Argentina
Fil: Jobbagy Gampel, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis ; Argentina
Fil: Contreras, S.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis ; Argentina. University of Texas at Austin; Estados Unidos
description Most sedimentary plains occupied by semiarid woody ecosystems have low groundwater recharge rates and high vadose zone salt accumulation. Their cultivation has often led to drainage of water below root zone, displacement of solutes, and rising water tables, affecting, in most extreme cases, long-term viability of agriculture. To explore this possibility in semiarid plains of South America, we characterized vadose flow using chloride data in dry forests of central Argentina, in an area that has been subject to intense deforestation and agricultural expansion during the last century. We selected five paired stands under natural dry forests and dryland agriculture (sites deforested ≥30 years ago) and sampled sediments (n = 3 boreholes) down to 6 m depth. Profiles were consistently dry and salty in forest stands with chloride inventories (0–6 m) of 150 g/m2 to 9 × 103 g/m2. Under cultivation 78% to 99% of the chloride stock was leached, and total water storage was ≥30% higher than in the dry forest, with soil water content close to field capacity. Estimates of groundwater recharge rates based on residual moisture flux approach (cumulative chloride versus cumulative water curves) suggested maximum values of 0.33 to 128.4 mm/yr for dry forest and agriculture, respectively. At agricultural stands recharge was also estimated using chloride front displacement, yielding minimum values ≥5.3 mm/yr. While the long-term impact of cultivation on regional groundwater hydrology is still unclear in the region, our findings suggest that land salinization processes are possible and need careful monitoring in areas with high agricultural expansion.
publishDate 2010
dc.date.none.fl_str_mv 2010-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/15529
Santoni, Celina Sofia; Jobbagy Gampel, Esteban Gabriel; Contreras, S.; Vadose zone transport in dry forests of central Argentina: role of land use; American Geophysical Union; Water Resources Research; 46; 10; 10-2010; 1-10
0043-1397
url http://hdl.handle.net/11336/15529
identifier_str_mv Santoni, Celina Sofia; Jobbagy Gampel, Esteban Gabriel; Contreras, S.; Vadose zone transport in dry forests of central Argentina: role of land use; American Geophysical Union; Water Resources Research; 46; 10; 10-2010; 1-10
0043-1397
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1029/2009WR008784/abstract
info:eu-repo/semantics/altIdentifier/doi/10.1029/2009WR008784
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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