Sensitivity of the land surface temperatureand Normalized Difference Water Index tosoil moisture on wheat and barley

The synergy between spectral indices and land surface temperature (LST) has been used as an indicator of crop status and soil moisture (SM). However, studies of the response times of these to changes in SM in the soil profile arescarce. The aim of this study was to analyze the sensitivity and respon...

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Autores principales: Beninato, Sabrina, Holzman, Mauro Ezequiel, Rivas, Raúl Eduardo
Formato: Artículo revista
Lenguaje:Inglés
Publicado: Facultad de Ciencias Agropecuarias 2025
Materias:
vegetation water status
Sentinel 2
NIR
SWIR
TIR
estado hídrico de la vegetación
Acceso en línea:https://revistas.unc.edu.ar/index.php/agris/article/view/46537
Aporte de:
AgriScientia de Universidad Nacional de Córdoba
id I10-R352-article-46537
record_format ojs
spelling I10-R352-article-465372025-07-30T14:03:44Z Sensitivity of the land surface temperatureand Normalized Difference Water Index tosoil moisture on wheat and barley Sensibilidad de la temperatura superficial terrestre y del Índice de Diferencia Normalizadadel Agua a la humedad del suelo en trigo y cebada Beninato, Sabrina Holzman, Mauro Ezequiel Rivas, Raúl Eduardo Beninato, Sabrina vegetation water status Sentinel 2 NIR SWIR TIR estado hídrico de la vegetación Sentinel 2 NIR SWIR TIR The synergy between spectral indices and land surface temperature (LST) has been used as an indicator of crop status and soil moisture (SM). However, studies of the response times of these to changes in SM in the soil profile arescarce. The aim of this study was to analyze the sensitivity and response times of LST and the Normalized Difference Water Index (NDWI) to changes in SM as a determining factor of barley and wheat water status in the southeasternArgentine Pampas. Daily SM and LST were provided by stations installed over the crops, and NDWI from Sentinel 2 (S2). Results showed instantaneous correlations between SM and LST (r > -0.65) for soil depths explored by croproots (20-50 cm). No consistent relationship between NDWI and SM was observed, suggesting NDWI limitation for short-time changes in SM in humid and sub-humid conditions. During the critical period of crops, the relationship between NDWI and SM showed high correlation (r > 0.92) only at 10 cmwhen considering 1-day time lag. This study contributes to the understanding of spectral behavior of crops in the optical and thermal spectrum in field conditions, which is key to evaluating the usefulness of these data for monitoring agricultural systems. Los índices espectrales y la temperatura de la superficie terrestre (LST) se han utilizado para el seguimiento de los cultivos y de la humedad del suelo (SM). Sin embargo, los estudios sobre sus tiempos de respuesta a cambios de SM son escasos. Este estudio analizó la sensibilidad y los tiempos de respuesta de la LST y del Índice de Agua de Diferencia Normalizada (NDWI) a la SM, como factor determinante del estado hídrico de cebada y trigo en el sudeste de la Pampa Argentina. SM y LST se registraron diariamente in situ, y el NDWI se obtuvo de Sentinel 2. Los resultados mostraron correlaciones instantáneas SM-LST (r > -0,65) en las profundidades exploradas por las raíces (20-50 cm). No se observó una relación consistente NDWI-SM, sugiriendo una limitación del NDWI para captar cambios a corto plazo en SM en condiciones húmedas-subhúmedas. Sin embargo, durante el período crítico de los cultivos se observó una alta correlación (r > 0,92) a 10 cm con un desfase temporal de un día. Este estudio contribuye a la comprensión del comportamiento óptico y térmico de los cultivos en condiciones de campo, esencial para evaluar la utilidad de estos datos para el monitoreo agrícola. Facultad de Ciencias Agropecuarias 2025-07-22 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unc.edu.ar/index.php/agris/article/view/46537 10.31047/1668.298x.v42.n1.46537 AgriScientia; Vol. 42 No. 1 (2025); 21-33 AgriScientia; Vol. 42 Núm. 1 (2025); 21-33 1668-298X 10.31047/1668.298x.v42.n1 eng https://revistas.unc.edu.ar/index.php/agris/article/view/46537/49913 Derechos de autor 2025 Sabrina Beninato, Mauro Ezequiel Holzman, Raúl Eduardo Rivas https://creativecommons.org/licenses/by-sa/4.0
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-352
container_title_str AgriScientia
language Inglés
format Artículo revista
topic vegetation water status
Sentinel 2
NIR
SWIR
TIR
estado hídrico de la vegetación
Sentinel 2
NIR
SWIR
TIR
spellingShingle vegetation water status
Sentinel 2
NIR
SWIR
TIR
estado hídrico de la vegetación
Sentinel 2
NIR
SWIR
TIR
Beninato, Sabrina
Holzman, Mauro Ezequiel
Rivas, Raúl Eduardo
Beninato, Sabrina
Sensitivity of the land surface temperatureand Normalized Difference Water Index tosoil moisture on wheat and barley
topic_facet vegetation water status
Sentinel 2
NIR
SWIR
TIR
estado hídrico de la vegetación
Sentinel 2
NIR
SWIR
TIR
author Beninato, Sabrina
Holzman, Mauro Ezequiel
Rivas, Raúl Eduardo
Beninato, Sabrina
author_facet Beninato, Sabrina
Holzman, Mauro Ezequiel
Rivas, Raúl Eduardo
Beninato, Sabrina
author_sort Beninato, Sabrina
title Sensitivity of the land surface temperatureand Normalized Difference Water Index tosoil moisture on wheat and barley
title_short Sensitivity of the land surface temperatureand Normalized Difference Water Index tosoil moisture on wheat and barley
title_full Sensitivity of the land surface temperatureand Normalized Difference Water Index tosoil moisture on wheat and barley
title_fullStr Sensitivity of the land surface temperatureand Normalized Difference Water Index tosoil moisture on wheat and barley
title_full_unstemmed Sensitivity of the land surface temperatureand Normalized Difference Water Index tosoil moisture on wheat and barley
title_sort sensitivity of the land surface temperatureand normalized difference water index tosoil moisture on wheat and barley
description The synergy between spectral indices and land surface temperature (LST) has been used as an indicator of crop status and soil moisture (SM). However, studies of the response times of these to changes in SM in the soil profile arescarce. The aim of this study was to analyze the sensitivity and response times of LST and the Normalized Difference Water Index (NDWI) to changes in SM as a determining factor of barley and wheat water status in the southeasternArgentine Pampas. Daily SM and LST were provided by stations installed over the crops, and NDWI from Sentinel 2 (S2). Results showed instantaneous correlations between SM and LST (r > -0.65) for soil depths explored by croproots (20-50 cm). No consistent relationship between NDWI and SM was observed, suggesting NDWI limitation for short-time changes in SM in humid and sub-humid conditions. During the critical period of crops, the relationship between NDWI and SM showed high correlation (r > 0.92) only at 10 cmwhen considering 1-day time lag. This study contributes to the understanding of spectral behavior of crops in the optical and thermal spectrum in field conditions, which is key to evaluating the usefulness of these data for monitoring agricultural systems.
publisher Facultad de Ciencias Agropecuarias
publishDate 2025
url https://revistas.unc.edu.ar/index.php/agris/article/view/46537
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first_indexed 2025-08-10T05:28:59Z
last_indexed 2025-08-10T05:28:59Z
_version_ 1841584478548393984

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