Soil quality indicators selection by mixed models and multivariate techniques in deforested areas for agricultural use in NW of Chaco, Argentina

Rojas, Julieta Mariana; Prause, Juan; Sanzano, G. Agustín; Arce, Osvaldo; Sánchez, María Cristina

doi:10.1016/j.still.2015.08.010

Cited by 48 publications

(49 citation statements)

References 43 publications

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“…The highest SOC loss (45 %) was found in the top 20 cm of the soil. This SOC loss was similar to the reported by Rojas et al (2016), who only evaluated the top 20 cm of soil. On the other hand, Conti et al (2014) studied soil profile up to 200 cm depth under different ecosystem types (native and secondary forest, two different shrublands and cropping) in the southern Semiarid Chaco and observed less SOC stock under cropping than under native forest only in the 0-10 cm depth.…”

supporting

confidence: 90%

“…First, land allocation to categories of conservation value (low, medium, high) should incorporate indicators of soil quality and health as criteria for land zoning. Soil organic C can be a suitable indicator to incorporate soil quality as criteria for land zoning (Weil and Magdoff, 2004;Powlson et al, 2011;Rojas et al, 2016). However, to correctly incorporate this indicator in land use decisions we need to know the threshold value of SOC contents beyond which soil functionality becomes impaired.…”

Section: Implications For Soil Management Decisions and Regulationsmentioning

confidence: 99%

“…On the other hand, Conti et al (2014) studied soil profile up to 200 cm depth under different ecosystem types (native and secondary forest, two different shrublands and cropping) in the southern Semiarid Chaco and observed less SOC stock under cropping than under native forest only in the 0-10 cm depth. However, these last two studies (Conti et al, 2014;Rojas et al, 2016) did not report the elapsed time since deforestation and, therefore, their contribution to the understanding of the dynamics of SOC is limited (Dean et al, 2012). Hence, magnitude and soil depth at which SOC stocks changes after deforestation and its relation with cropping time, still remains unclear in the Semiarid Chaco.…”

mentioning

confidence: 99%

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Deforestation impacts on soil organic carbon stocks in the Semiarid Chaco Region, Argentina

Villarino

Studdert

Baldassini

et al. 2017

Science of The Total Environment

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Land use change affects soil organic carbon (SOC) and generates CO emissions. Moreover, SOC depletion entails degradation of soil functions that support ecosystem services. Large areas covered by dry forests have been cleared in the Semiarid Chaco Region of Argentina for cropping expansion. However, deforestation impacts on the SOC stock and its distribution in the soil profile have been scarcely reported. We assessed these impacts based on the analysis of field data along a time-since-deforestation-for-cropping chronosequence, and remote sensing indices. Soil organic C was determined up to 100cm depth and physically fractionated into mineral associated organic carbon (MAOC) and particulate organic C (POC). Models describing vertical distribution of SOC were fitted. Total SOC, POC and MAOC stocks decreased markedly with increasing cropping age. Particulate organic C was the most sensitive fraction to cultivation. After 10yr of cropping SOC loss was around 30%, with greater POC loss (near 60%) and smaller MAOC loss (near 15%), at 0-30cm depth. Similar relative SOC losses were observed in deeper soil layers (30-60 and 60-100cm). Deforestation and subsequent cropping also modified SOC vertical distribution. Soil organic C loss was negatively associated with the proportion of maize in the rotation and total crop biomass inputs, but positively associated with the proportion of soybean in the rotation. Without effective land use polices, deforestation and agricultural expansion can lead to rapid soil degradation and reductions in the provision of important ecosystem services.

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supporting

confidence: 90%

Section: Implications For Soil Management Decisions and Regulationsmentioning

confidence: 99%

mentioning

confidence: 99%

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Deforestation impacts on soil organic carbon stocks in the Semiarid Chaco Region, Argentina

Villarino

Studdert

Baldassini

et al. 2017

Science of The Total Environment

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“…In the search for appropriate ways to evaluate the impacts of human practices on soil quality, several researchers have recommended that the evaluation of soil physical indicators should have simple and lowcost methodologies, enabling faster analysis (Mendes, Melloni, & Melloni, 2006;Nesbitt and Adl, 2014;Sun et al, 2014;Faleschini, Zanini, Pellegrino, & Pasinato, 2016), and better reflecting the differences in soil quality (Araújo, Goedert, & Lacerda, 2007;Garcia & Rosolem 2010;Barreto et al, 2014;Desjeux et al, 2015;Duval, Galantini, Martinez, López, & Wall, 2016;Sarathjith, Sankar, Wani, & Sahrawat, 2016). Since aggregates constitute the main structural components of the soil, they have been widely used as quality indicators in conservation systems (Dexter, 1988;Ferreira, 2010;Lourente et al, 2011;Juhos, Szabó, & Ladányi, 2016;Rojas, Prause, Sanzano, Arce, & Sánchez, 2016).…”

Section: Introductionmentioning

confidence: 99%

Fast immersion to test the stability of aggregates in water: consequences for interpreting results from tropical soil classes

et al. 2019

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Aggregates are the primary structural components of soil and have been used as an indicator of soil quality in conservation systems. The objective of this study was to analyse the effect of slow pre-wetting on the results of the aggregate stability test for different classes of tropical soils. Data were arranged in a 2 x 4 factorial design with three replications, in which the first factor comprised the two methods of pre-treatment on soil aggregates: without pre-wetting (WOPW), which considered the moisture of the aggregates in the field, and with pre-wetting (WPW), which considered the slow wetting of aggregates through capillarity on wet filter paper for 24h. The second factor consisted of four soil classes: Typic Dystrustept (Cambissolo Aplico distrófico in Embrapa), Typic Hapludult (Argissolo Amarelo distrófico), Rhodic Kandiudult (Nitossolo Vermelho distrófico), and Anionic Acrudox (Latossolo Vermelho distróferrico) and considered horizons A and B. The pre-wetting significantly increased the values of the weighted average diameter, geometric mean diameter and aggregate stability index. In soils with high organic carbon content, the practice of pre-moistening did not provide variation in aggregation.

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“…Además, se encuentran directamente relacionados con la fertilidad del suelo y con su capacidad de retención hídrica (Álvarez & Steinbach, 2006), al regular la acidez y aumentar la disponibilidad de nutrientes (principalmente nitrógeno), proporcionar coloide de alta capacidad de intercambio catiónico y favorecer la porosidad del suelo (Kramer et al, 2006;Martínez et al, 2008). Los cambios en el uso del suelo pueden causar una degradación significativa de algunos parámetros en comparación con el suelo en condiciones prístinas, afectando la calidad física y química en un tiempo relativamente corto (Rojas et al, 2016).…”

Section: La Importancia Del Carbono Como Servicio Ecosistémico Intermunclassified

Silvopastoral systems of the Chaco forests: Effects of trees on grass growth

Baldassini

Piñeiro

Paruelo

2018

Journal of Arid Environments

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A todos los que me acompañaron y ayudaron en este camino, principalmete a José por todo lo que me enseñó y me enseña dia a dia. Por encontrar la forma de bancarme las veces que estuve sin beca, eternamente agradecido… A Josefina, mi compañera de vida, por el apoyo constante e inconmensurable. Gracias por tanto, gracias por todo lo vivido, gracias por todo lo que vendrá… A mi familia, por estar siempre… Al LART y al LabFo, por la compañía y el inmejorable lugar de trabajo… A Lola, por hacer que todo sea posible… A Cami B., Tamara P., HD, Sebu A., Cristian D., Félix M., Fede P. y Juan C. por el apoyo brindado durante el ensayo de campo y los muestreos, y por bancarse los intensos calores del Chaco salteño… A Andorrana SA y Anta Del Dorado SA, por permitirme instalar el experimento en sus campos… , por ayudarme de una u otra forma… A Gerva y Marcos, por contribuir y estar cuando lo necesité… Al Depto. de Métodos Cuantitativos y a Susana P., por abrirme las puertas… A la UBA y al CONICET, por contribuir fuertemente en mi formación… A todos los que hicieron posible esta tesis...A todos y a cada uno, ¡muchas gracias! v Declaro que el material incluido en esta tesis es, a mi mejor saber y entender, original producto de mi propio trabajo (salvo en la medida en que se identifique explícitamente las contribuciones de otros), y que este material no lo he presentado, en forma parcial o total, como una tesis en ésta u otra institución.

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Soil quality indicators selection by mixed models and multivariate techniques in deforested areas for agricultural use in NW of Chaco, Argentina

Cited by 48 publications

References 43 publications

Deforestation impacts on soil organic carbon stocks in the Semiarid Chaco Region, Argentina

Deforestation impacts on soil organic carbon stocks in the Semiarid Chaco Region, Argentina

Fast immersion to test the stability of aggregates in water: consequences for interpreting results from tropical soil classes

Silvopastoral systems of the Chaco forests: Effects of trees on grass growth

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