Relationship between NDVI of Patches and Cover Area of Grasses, Shrubs and Bare Soil Components of a Semi-Arid Steppe from North-West Patagonia, Argentina
Distinguishing the contributions of different vegetation cover such as shrubs and grasses components into the primary production in arid and semi-arid rangelands is a key step to understanding changes at a landscape scale. The aim was to assess the contribution of shrubs, grasses and bare soil compo...
| Autores principales: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2023
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/14276 https://www.mdpi.com/2813-3463/2/1/3 https://doi.org/10.3390/grasses2010003 |
| _version_ | 1855485331363594240 |
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| author | Farina, Clara Maria Aramayo, Maria Valeria Del Lujan Perri, Daiana Vanesa Martin Albarracin, Valeria Leticia Umaña, Fernando Bruzzone, Octavio Augusto Easdale, Marcos Horacio |
| author_browse | Aramayo, Maria Valeria Del Lujan Bruzzone, Octavio Augusto Easdale, Marcos Horacio Farina, Clara Maria Martin Albarracin, Valeria Leticia Perri, Daiana Vanesa Umaña, Fernando |
| author_facet | Farina, Clara Maria Aramayo, Maria Valeria Del Lujan Perri, Daiana Vanesa Martin Albarracin, Valeria Leticia Umaña, Fernando Bruzzone, Octavio Augusto Easdale, Marcos Horacio |
| author_sort | Farina, Clara Maria |
| collection | INTA Digital |
| description | Distinguishing the contributions of different vegetation cover such as shrubs and grasses components into the primary production in arid and semi-arid rangelands is a key step to understanding changes at a landscape scale. The aim was to assess the contribution of shrubs, grasses and bare soil components into a total biophysical variable at a patch level, and the relationship between that biophysical variable and remote sensing vegetation index, in a grass–shrub steppe from North-West Patagonia, Argentina. We conducted a field survey in the period 2015–2017 to analyzing the relationship between monthly values of Normalized Difference Vegetation Index (NDVI) of two grasses, two shrub species and bare soil, weighted by their cover area at a patch level, and the
concomitant patch NDVI records, respectively. The contribution of the patch components to the total NDVI value at a patch level was additive. The relationship between the weighted NDVI of patch components and the concomitant NDVI value at a patch level along time was linear for perennial grasses and deciduous shrub–grass patches, but linearity was not significant for most perennial
shrub–grass patches. Differences among patch compositions and their surface reflectance suggest the need to move forward in a more precise distinction of the floristic composition of patches, to better understanding their contribution to NDVI temporal dynamics at a landscape scale. |
| format | Artículo |
| id | INTA14276 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | INTA142762023-03-20T12:14:10Z Relationship between NDVI of Patches and Cover Area of Grasses, Shrubs and Bare Soil Components of a Semi-Arid Steppe from North-West Patagonia, Argentina Farina, Clara Maria Aramayo, Maria Valeria Del Lujan Perri, Daiana Vanesa Martin Albarracin, Valeria Leticia Umaña, Fernando Bruzzone, Octavio Augusto Easdale, Marcos Horacio Pastizales Pastizal Natural Cubierta Vegetal Pastures Natural Pastures Plant Cover Grasses Shrubs Gramineas Arbustos Región Patagónica Índices de Vegetación Diferencial Normalizado NDVI Distinguishing the contributions of different vegetation cover such as shrubs and grasses components into the primary production in arid and semi-arid rangelands is a key step to understanding changes at a landscape scale. The aim was to assess the contribution of shrubs, grasses and bare soil components into a total biophysical variable at a patch level, and the relationship between that biophysical variable and remote sensing vegetation index, in a grass–shrub steppe from North-West Patagonia, Argentina. We conducted a field survey in the period 2015–2017 to analyzing the relationship between monthly values of Normalized Difference Vegetation Index (NDVI) of two grasses, two shrub species and bare soil, weighted by their cover area at a patch level, and the concomitant patch NDVI records, respectively. The contribution of the patch components to the total NDVI value at a patch level was additive. The relationship between the weighted NDVI of patch components and the concomitant NDVI value at a patch level along time was linear for perennial grasses and deciduous shrub–grass patches, but linearity was not significant for most perennial shrub–grass patches. Differences among patch compositions and their surface reflectance suggest the need to move forward in a more precise distinction of the floristic composition of patches, to better understanding their contribution to NDVI temporal dynamics at a landscape scale. Estación Experimental Agropecuaria Bariloche Fil: Farina, Clara Maria. Instituto Nacional de Tecnologia Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Farina, Clara Maria. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Aramayo, Maria Valeria Del Lujan. Instituto Nacional de Tecnologia Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Perri, Daiana Vanesa. Instituto Nacional de Tecnologia Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Perri, Daiana Vanesa. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Martin Albarracin, Valeria Leticia. Instituto Nacional de Tecnología Agropecuaria INTA. Estación Experimental Agropecuaria Bariloche; Argentina Fil: Martin Albarracin, Valeria Leticia. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Umaña, Fernando. Instituto Nacional de Tecnologia Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Bruzzone, Octavio Augusto. Instituto Nacional de Tecnologia Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Bruzzone, Octavio Augusto. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Easdale, Marcos Horacio. Instituto Nacional de Tecnologia Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Easdale, Marcos Horacio. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina 2023-03-20T12:07:54Z 2023-03-20T12:07:54Z 2023-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/14276 https://www.mdpi.com/2813-3463/2/1/3 2813-3463 https://doi.org/10.3390/grasses2010003 eng info:eu-repograntAgreement/INTA/PATNOR-1281101/AR./Aportes para el desarrollo de cordillera y precordillera. info:eu-repograntAgreement/INTA/2019-PE-E1-I504-001/2019-PE-E1-I504-001/AR./Tecnologías para el incremento forrajero y la valorización de servicios ecosistémicos en pastizales naturales con uso ganadero 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 MDPI Grasses 2 (1) : 23-30 (March 2023) |
| spellingShingle | Pastizales Pastizal Natural Cubierta Vegetal Pastures Natural Pastures Plant Cover Grasses Shrubs Gramineas Arbustos Región Patagónica Índices de Vegetación Diferencial Normalizado NDVI Farina, Clara Maria Aramayo, Maria Valeria Del Lujan Perri, Daiana Vanesa Martin Albarracin, Valeria Leticia Umaña, Fernando Bruzzone, Octavio Augusto Easdale, Marcos Horacio Relationship between NDVI of Patches and Cover Area of Grasses, Shrubs and Bare Soil Components of a Semi-Arid Steppe from North-West Patagonia, Argentina |
| title | Relationship between NDVI of Patches and Cover Area of Grasses, Shrubs and Bare Soil Components of a Semi-Arid Steppe from North-West Patagonia, Argentina |
| title_full | Relationship between NDVI of Patches and Cover Area of Grasses, Shrubs and Bare Soil Components of a Semi-Arid Steppe from North-West Patagonia, Argentina |
| title_fullStr | Relationship between NDVI of Patches and Cover Area of Grasses, Shrubs and Bare Soil Components of a Semi-Arid Steppe from North-West Patagonia, Argentina |
| title_full_unstemmed | Relationship between NDVI of Patches and Cover Area of Grasses, Shrubs and Bare Soil Components of a Semi-Arid Steppe from North-West Patagonia, Argentina |
| title_short | Relationship between NDVI of Patches and Cover Area of Grasses, Shrubs and Bare Soil Components of a Semi-Arid Steppe from North-West Patagonia, Argentina |
| title_sort | relationship between ndvi of patches and cover area of grasses shrubs and bare soil components of a semi arid steppe from north west patagonia argentina |
| topic | Pastizales Pastizal Natural Cubierta Vegetal Pastures Natural Pastures Plant Cover Grasses Shrubs Gramineas Arbustos Región Patagónica Índices de Vegetación Diferencial Normalizado NDVI |
| url | http://hdl.handle.net/20.500.12123/14276 https://www.mdpi.com/2813-3463/2/1/3 https://doi.org/10.3390/grasses2010003 |
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