Please use this identifier to cite or link to this item:
http://hdl.handle.net/2067/43337
Title: | Influence of image pixel resolution on canopy cover estimation in poplar plantations from field, aerial and satellite optical imagery | Authors: | Chianucci, Francesco Puletti, Nicola Grotti, Mirko Bisaglia, Carlo Giannetti, Francesca Romano, Elio Brambilla, Massimo Mattioli, Walter Cabassi, Giovanni Bajocco, Sofia Li, Linyuan Chirici, Gherardo Corona, Piermaria Tattoni, Clara |
Journal: | ANNALS OF SILVICULTURAL RESEARCH | Issue Date: | 2021 | Abstract: | Accurate estimates of canopy cover (CC) are central for a wide range of forestry studies. As direct measurements are impractical, indirect optical methods have often been used to estimate CC from the complement of gap fraction measurements obtained with restricted-view sensors. In this short note we evaluated the influence of the image pixel resolution (ground sampling distance; GSD) on CC estimation in poplar plantations obtained from field (cover photography; GSD < 1 cm), unmanned aerial (UAV; GSD <10 cm) and satellite (Sentinel-2; GSD = 10 m) imagery. The trial was conducted in poplar tree plantations in Northern Italy, with varying age and canopy cover. Results indicated that the coarser resolution available from satellite data is suitable to obtain estimates of canopy cover, as compared with field measurements obtained from cover photography; therefore, S2 is recommended for larger scale monitoring and routine assessment of canopy cover in poplar plantations. The higher resolution of UAV compared with Sentinel-2 allows finer assessment of canopy structure, which could also be used for calibrating metrics obtained from coarser-scale remote sensing products, avoiding the need of ground measurements. |
URI: | http://hdl.handle.net/2067/43337 | ISSN: | 2284-354X | DOI: | 10.12899/ASR-2074 | Rights: | CC0 1.0 Universal |
Appears in Collections: | A1. Articolo in rivista |
Files in This Item:
File | Description | Size | Format | Existing users please |
---|---|---|---|---|
ASR_influence of image pixel resolution.pdf | 1.24 MB | Adobe PDF | Request a copy |
SCOPUSTM
Citations
20
9
Last Week
0
0
Last month
1
1
checked on Mar 24, 2024
Page view(s)
61
Last Week
0
0
Last month
1
1
checked on Mar 27, 2024
Download(s)
4
checked on Mar 27, 2024
Google ScholarTM
Check
Altmetric
This item is licensed under a Creative Commons License