Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina

Autores
Frank Buss, María Elisa; Argañaraz, Juan Pablo; Frery, Alejandro
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The caldén (Neltuma caldenia) forest, a xerophytic low-stature ecosystem in central Argentina, faces increasing threats from land use change and desertification. This studyassesses the capability of full-polarimetric L-band SAR data from the Argentine SAOCOM-1A satellite to characterise forest attributes in this ecosystem. We computed the GeneralisedRadar Vegetation Index (GRVI) and compared it with aboveground biomass and treecanopy cover data from the Second National Forest Inventory, under fire and non-fire conditions. We also assessed other SAR indices and polarimetric decompositions. GRVI valuesexhibited limited variability relative to the broad range of field-estimated biomass, andmost regression models were not statistically significant. Nevertheless, GRVI effectivelydistinguished woody from non-woody vegetation and showed a weak correlation withcanopy cover. Statistically significant, albeit weak, correlations were also observed betweenbiomass and specific polarimetric components, such as the helix term of the Yamaguchidecomposition and the Pauli volume component. Key challenges included limited spatialand temporal coverage of SAOCOM-1A data and the distribution of field plots. Despitethese limitations, our results support the use of GRVI for land cover monitoring in semiaridregions, emphasising the importance of multitemporal data, integration with C-band SAR,and enhanced field sampling to improve forest attribute modelling.
Fil: Frank Buss, María Elisa. Comision Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Argañaraz, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Comision Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; Argentina
Fil: Frery, Alejandro. Victoria University Of Wellington; Nueva Zelanda
Materia
Aboveground biomass
Tree canopy cover
Xerophytic forest
Generalised Radar Vegetation Index
L-band SAR
PolSAR decomposition
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/284924
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, ArgentinaFrank Buss, María ElisaArgañaraz, Juan PabloFrery, AlejandroAboveground biomassTree canopy coverXerophytic forestGeneralised Radar Vegetation IndexL-band SARPolSAR decompositionhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The caldén (Neltuma caldenia) forest, a xerophytic low-stature ecosystem in central Argentina, faces increasing threats from land use change and desertification. This studyassesses the capability of full-polarimetric L-band SAR data from the Argentine SAOCOM-1A satellite to characterise forest attributes in this ecosystem. We computed the GeneralisedRadar Vegetation Index (GRVI) and compared it with aboveground biomass and treecanopy cover data from the Second National Forest Inventory, under fire and non-fire conditions. We also assessed other SAR indices and polarimetric decompositions. GRVI valuesexhibited limited variability relative to the broad range of field-estimated biomass, andmost regression models were not statistically significant. Nevertheless, GRVI effectivelydistinguished woody from non-woody vegetation and showed a weak correlation withcanopy cover. Statistically significant, albeit weak, correlations were also observed betweenbiomass and specific polarimetric components, such as the helix term of the Yamaguchidecomposition and the Pauli volume component. Key challenges included limited spatialand temporal coverage of SAOCOM-1A data and the distribution of field plots. Despitethese limitations, our results support the use of GRVI for land cover monitoring in semiaridregions, emphasising the importance of multitemporal data, integration with C-band SAR,and enhanced field sampling to improve forest attribute modelling.Fil: Frank Buss, María Elisa. Comision Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Argañaraz, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Comision Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; ArgentinaFil: Frery, Alejandro. Victoria University Of Wellington; Nueva ZelandaMDPI2025-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/284924Frank Buss, María Elisa; Argañaraz, Juan Pablo; Frery, Alejandro; Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina; MDPI; Sustainability; 18; 1; 12-2025; 1-192071-1050CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2071-1050/18/1/369info:eu-repo/semantics/altIdentifier/doi/10.3390/su18010369info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:36:40Zoai:ri.conicet.gov.ar:11336/284924instacron: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:34982026-08-25 14:36:40.836CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina
title Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina
spellingShingle Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina
Frank Buss, María Elisa
Aboveground biomass
Tree canopy cover
Xerophytic forest
Generalised Radar Vegetation Index
L-band SAR
PolSAR decomposition
title_short Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina
title_full Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina
title_fullStr Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina
title_full_unstemmed Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina
title_sort Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina
dc.creator.none.fl_str_mv Frank Buss, María Elisa
Argañaraz, Juan Pablo
Frery, Alejandro
author Frank Buss, María Elisa
author_facet Frank Buss, María Elisa
Argañaraz, Juan Pablo
Frery, Alejandro
author_role author
author2 Argañaraz, Juan Pablo
Frery, Alejandro
author2_role author
author
dc.subject.none.fl_str_mv Aboveground biomass
Tree canopy cover
Xerophytic forest
Generalised Radar Vegetation Index
L-band SAR
PolSAR decomposition
topic Aboveground biomass
Tree canopy cover
Xerophytic forest
Generalised Radar Vegetation Index
L-band SAR
PolSAR decomposition
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The caldén (Neltuma caldenia) forest, a xerophytic low-stature ecosystem in central Argentina, faces increasing threats from land use change and desertification. This studyassesses the capability of full-polarimetric L-band SAR data from the Argentine SAOCOM-1A satellite to characterise forest attributes in this ecosystem. We computed the GeneralisedRadar Vegetation Index (GRVI) and compared it with aboveground biomass and treecanopy cover data from the Second National Forest Inventory, under fire and non-fire conditions. We also assessed other SAR indices and polarimetric decompositions. GRVI valuesexhibited limited variability relative to the broad range of field-estimated biomass, andmost regression models were not statistically significant. Nevertheless, GRVI effectivelydistinguished woody from non-woody vegetation and showed a weak correlation withcanopy cover. Statistically significant, albeit weak, correlations were also observed betweenbiomass and specific polarimetric components, such as the helix term of the Yamaguchidecomposition and the Pauli volume component. Key challenges included limited spatialand temporal coverage of SAOCOM-1A data and the distribution of field plots. Despitethese limitations, our results support the use of GRVI for land cover monitoring in semiaridregions, emphasising the importance of multitemporal data, integration with C-band SAR,and enhanced field sampling to improve forest attribute modelling.
Fil: Frank Buss, María Elisa. Comision Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Argañaraz, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Comision Nacional de Actividades Espaciales. Instituto de Altos Estudios Espaciales "Mario Gulich"; Argentina
Fil: Frery, Alejandro. Victoria University Of Wellington; Nueva Zelanda
description The caldén (Neltuma caldenia) forest, a xerophytic low-stature ecosystem in central Argentina, faces increasing threats from land use change and desertification. This studyassesses the capability of full-polarimetric L-band SAR data from the Argentine SAOCOM-1A satellite to characterise forest attributes in this ecosystem. We computed the GeneralisedRadar Vegetation Index (GRVI) and compared it with aboveground biomass and treecanopy cover data from the Second National Forest Inventory, under fire and non-fire conditions. We also assessed other SAR indices and polarimetric decompositions. GRVI valuesexhibited limited variability relative to the broad range of field-estimated biomass, andmost regression models were not statistically significant. Nevertheless, GRVI effectivelydistinguished woody from non-woody vegetation and showed a weak correlation withcanopy cover. Statistically significant, albeit weak, correlations were also observed betweenbiomass and specific polarimetric components, such as the helix term of the Yamaguchidecomposition and the Pauli volume component. Key challenges included limited spatialand temporal coverage of SAOCOM-1A data and the distribution of field plots. Despitethese limitations, our results support the use of GRVI for land cover monitoring in semiaridregions, emphasising the importance of multitemporal data, integration with C-band SAR,and enhanced field sampling to improve forest attribute modelling.
publishDate 2025
dc.date.none.fl_str_mv 2025-12
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/11336/284924
Frank Buss, María Elisa; Argañaraz, Juan Pablo; Frery, Alejandro; Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina; MDPI; Sustainability; 18; 1; 12-2025; 1-19
2071-1050
CONICET Digital
CONICET
url http://hdl.handle.net/11336/284924
identifier_str_mv Frank Buss, María Elisa; Argañaraz, Juan Pablo; Frery, Alejandro; Exploratory Data Analysis from SAOCOM-1A Polarimetric Images over Forest Attributes of the Semiarid Caldén (Neltuma caldenia) Forest, Argentina; MDPI; Sustainability; 18; 1; 12-2025; 1-19
2071-1050
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2071-1050/18/1/369
info:eu-repo/semantics/altIdentifier/doi/10.3390/su18010369
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
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 13.265058

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