Onset of deep drainage and salt mobilization following forest clearing and cultivation in the Chaco plains (Argentina)
Semiarid sedimentary plains occupied by dry forest ecosystems often display low groundwater recharge rates and accumulation of salts in the soil profile. The transformation of these natural systems to rain‐fed agriculture has led to raising water tables and a slow, but steady, process of groundwater...
| Main Authors: | , , , , |
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Wiley
2019
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| Online Access: | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/wrcr.20516 http://hdl.handle.net/20.500.12123/4758 https://doi.org/10.1002/wrcr.20516 |
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| author | Amdam, M. Laura Aragón, Myriam Roxana Jobbagy Gampel, Esteban Gabriel Volante, Jose Norberto Paruelo, José María |
| author_browse | Amdam, M. Laura Aragón, Myriam Roxana Jobbagy Gampel, Esteban Gabriel Paruelo, José María Volante, Jose Norberto |
| author_facet | Amdam, M. Laura Aragón, Myriam Roxana Jobbagy Gampel, Esteban Gabriel Volante, Jose Norberto Paruelo, José María |
| author_sort | Amdam, M. Laura |
| collection | INTA Digital |
| description | Semiarid sedimentary plains occupied by dry forest ecosystems often display low groundwater recharge rates and accumulation of salts in the soil profile. The transformation of these natural systems to rain‐fed agriculture has led to raising water tables and a slow, but steady, process of groundwater and soil salinization in vast areas of Australia. In the semiarid plains of Chaco (central South America), unprecedented deforestation rates are taken place. Based on deep soil sampling (0–6 m) in seven paired stands under natural dry forest, rain‐fed agriculture and pasture, with different age of clearance (>30 years, 20 and 3 years) in Salta, Argentina, we provide evidence of groundwater recharge increase and onset of salt mobilization in areas where forests were replaced by annual croplands. Soils with higher water and lower chloride content are evidence of deep percolation and salt leaching. In Salta, stands subject to 30 years of rain‐fed cultivation had profiles with 30–46% higher moisture content and 94% lower chloride stocks compared to dry forest (0.05 ± 0.04 kg/m2 versus 0.77 ± 0.4 kg/m2). Estimates of groundwater recharge based on the displacement of chloride peaks suggested values of 27–87 mm yr−1 for agricultural soybean stands, and 10.4 mm yr−1 for pastures. While hydrological shifts in the regional groundwater system are poorly monitored and understood, our findings show that it is potentially sensitive to land use changes and to salinization processes. |
| format | info:ar-repo/semantics/artículo |
| id | INTA4758 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | INTA47582019-03-27T13:49:33Z Onset of deep drainage and salt mobilization following forest clearing and cultivation in the Chaco plains (Argentina) Amdam, M. Laura Aragón, Myriam Roxana Jobbagy Gampel, Esteban Gabriel Volante, Jose Norberto Paruelo, José María Drenaje Mineralización Tala con Destronque Cultivo Ecosistema Drainage Mineralization Forest Clearing Cultivation Ecosystems Drenaje Profundo Deep Drainage Región Chaqueña Semiarid sedimentary plains occupied by dry forest ecosystems often display low groundwater recharge rates and accumulation of salts in the soil profile. The transformation of these natural systems to rain‐fed agriculture has led to raising water tables and a slow, but steady, process of groundwater and soil salinization in vast areas of Australia. In the semiarid plains of Chaco (central South America), unprecedented deforestation rates are taken place. Based on deep soil sampling (0–6 m) in seven paired stands under natural dry forest, rain‐fed agriculture and pasture, with different age of clearance (>30 years, 20 and 3 years) in Salta, Argentina, we provide evidence of groundwater recharge increase and onset of salt mobilization in areas where forests were replaced by annual croplands. Soils with higher water and lower chloride content are evidence of deep percolation and salt leaching. In Salta, stands subject to 30 years of rain‐fed cultivation had profiles with 30–46% higher moisture content and 94% lower chloride stocks compared to dry forest (0.05 ± 0.04 kg/m2 versus 0.77 ± 0.4 kg/m2). Estimates of groundwater recharge based on the displacement of chloride peaks suggested values of 27–87 mm yr−1 for agricultural soybean stands, and 10.4 mm yr−1 for pastures. While hydrological shifts in the regional groundwater system are poorly monitored and understood, our findings show that it is potentially sensitive to land use changes and to salinization processes. EEA Salta Fil: Amdam, M. Laura. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información; Argentina Fil: Aragón, Myriam Roxana. Universidad Nacional de Tucumán. Instituto de Ecología Regional. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Ecología Regional.; Argentina. 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 "Prof. Ezio Marchi"; 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 "Prof. Ezio Marchi"; Argentina Fil: Volante, Jose Norberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina Fil: Paruelo, José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información; Argentina 2019-03-27T13:48:05Z 2019-03-27T13:48:05Z 2013-10 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/wrcr.20516 http://hdl.handle.net/20.500.12123/4758 0043-1397 1944-7973 https://doi.org/10.1002/wrcr.20516 eng info:eu-repo/semantics/openAccess 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 Wiley Water Resources Research 49 (10) : 6601-6612 (October 2013) |
| spellingShingle | Drenaje Mineralización Tala con Destronque Cultivo Ecosistema Drainage Mineralization Forest Clearing Cultivation Ecosystems Drenaje Profundo Deep Drainage Región Chaqueña Amdam, M. Laura Aragón, Myriam Roxana Jobbagy Gampel, Esteban Gabriel Volante, Jose Norberto Paruelo, José María Onset of deep drainage and salt mobilization following forest clearing and cultivation in the Chaco plains (Argentina) |
| title | Onset of deep drainage and salt mobilization following forest clearing and cultivation in the Chaco plains (Argentina) |
| title_full | Onset of deep drainage and salt mobilization following forest clearing and cultivation in the Chaco plains (Argentina) |
| title_fullStr | Onset of deep drainage and salt mobilization following forest clearing and cultivation in the Chaco plains (Argentina) |
| title_full_unstemmed | Onset of deep drainage and salt mobilization following forest clearing and cultivation in the Chaco plains (Argentina) |
| title_short | Onset of deep drainage and salt mobilization following forest clearing and cultivation in the Chaco plains (Argentina) |
| title_sort | onset of deep drainage and salt mobilization following forest clearing and cultivation in the chaco plains argentina |
| topic | Drenaje Mineralización Tala con Destronque Cultivo Ecosistema Drainage Mineralization Forest Clearing Cultivation Ecosystems Drenaje Profundo Deep Drainage Región Chaqueña |
| url | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/wrcr.20516 http://hdl.handle.net/20.500.12123/4758 https://doi.org/10.1002/wrcr.20516 |
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