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EnglishThis study investigates the potential of the Sentinel-2 satellite for monitoring the seasonal changes in grassland total canopy chlorophyll content (CCC), fraction of photosynthetically active radiation absorbed by the vegetation canopy (FAPAR), and fraction of photosynthetically active radiation absorbed only by its photosynthesizing components (GFAPAR). Reflectance observations were collected on a continuous basis during growing seasons by means of a newly developed ASD-WhiteRef system. Two models using Sentinel-2 simulated data (linear regression-vegetation indices (VIs) approach and multiple regression (MR) reflectance approach) were tested to estimate vegetation biophysical parameters. To assess whether the use of full solar spectrum reflectance data is able to provide an added value in CCC and GFAPAR estimation accuracy, a third model based on partial least squares regression (PLSR) and the ASD-WhiteRef reflectance data was tested. The results showed that FAPAR remained quite stable during the reproduction and senescence stages, and no significant relationships between FAPAR and VIs were found. On the other hand, GFAPAR showed clearer seasonal trends. The comparison of the three models revealed no significant differences in the accuracies of CCC and GFAPAR predictions and demonstrated a strong contribution of SWIR bands to the explained variability of investigated parameters. The promising results highlight the potential of the Sentinel-2 satellite for retrieving biophysical parameters from space.
Sakowska, K.; Juszczak, R.; Gianelle, D. (2016). Remote sensing of grassland biophysical parameters in the context of the sentinel-2 satellite mission. JOURNAL OF SENSORS, 2016 (4612809): 1-16. doi: 10.1155/2016/4612809 handle: http://hdl.handle.net/10449/34016
| Citation: | Sakowska, K.; Juszczak, R.; Gianelle, D. (2016). Remote sensing of grassland biophysical parameters in the context of the sentinel-2 satellite mission. JOURNAL OF SENSORS, 2016 (4612809): 1-16. doi: 10.1155/2016/4612809 handle: http://hdl.handle.net/10449/34016 | |
| Internal authors: | ||
| Organization unit: | CRI [2011-01 - today]: DEPARTMENT OF SUSTAINABLE AGRO-ECOSYSTEMS AND BIORESOURCES | |
| Authors: | Sakowska, K.; Juszczak, R.; Gianelle, D. | |
| Title: | Remote sensing of grassland biophysical parameters in the context of the sentinel-2 satellite mission | |
| Journal: | JOURNAL OF SENSORS | |
| Issue Date: | 2016 | |
| Scientific Disciplinary Area: | Settore BIO/07 - ECOLOGIA | |
| Keywords ENG: | Remote sensing Sentinel-2 CO2 fluxes | |
| Language: | English | |
| IF: | With Impact Factor ISI | |
| Publication status: | Published | |
| Nature of content: | Articolo in rivista/Article | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1155/2016/4612809 | |
| Appears in Collections: | 01 - Journal article |
Files in This Item:
| File | Description | Type | License | |
|---|---|---|---|---|
| 4612809 (1).pdf | N/A |  | Open AccessView/Open |
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