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NDVI from satellite images to estimate LiDAR-derived geometric and structural parameters in super-intensive almond orchards

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Issue date
2021
Author
Martínez Casasnovas, José Antonio
Llorens Calveras, Jordi
Sandonís Pozo, Leire
Escolà i Agustí, Alexandre
Arnó Satorra, Jaume
Suggested citation
Martínez Casasnovas, José Antonio; Llorens Calveras, Jordi; Sandonís Pozo, Leire; Escolà i Agustí, Alexandre; Arnó Satorra, Jaume; . (2021) . NDVI from satellite images to estimate LiDAR-derived geometric and structural parameters in super-intensive almond orchards. Stafford, J.V. (ed.), Precision Agriculture’21. Wageningen Academic Publishers, Amsterdam (The Netherlands), pp 567-573. https://doi.org/10.3920/978-90-8686-916-9. http://hdl.handle.net/10459.1/84063.
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Abstract
The present work tries to bridge a gap about the estimation of geometric and structural orchard parameters (LiDAR-derived) from vegetation indices from satellites. The maximum height and width, the cross-sectional area and the porosity were measured along the rows in a super-intensive almond (Prunus dulcis) orchard every 0.5 m by means of a Velodyne VLP16 LiDAR sensor. These parameters were interpolated to the pixel centroids of PlanetScope and Sentinel-2 and correlated with the normalized difference vegetation index (NDVI) from both platforms. The highest correlations were obtained between the NDVI of PlanetScope images and the cross-sectional area of the almond trees (R=0.72) and with the maximum width of the cross-sections (R=0.71). The results can be useful to estimate important canopy geometric parameters for site-specific management of orchards.
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http://hdl.handle.net/10459.1/84063
DOI
https://doi.org/10.3920/978-90-8686-916-9_68
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Stafford, J.V. (ed.), Precision Agriculture’21. Wageningen Academic Publishers, Amsterdam (The Netherlands), pp 567-573. https://doi.org/10.3920/978-90-8686-916-9
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