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• W4292264037 endingPage "3975" @default.
• W4292264037 startingPage "3975" @default.
• W4292264037 abstract "Poplar (Populus spp.) is a fast-growing tree planted to meet the growing global demand for wood products. In France, the country with the largest area planted with poplar in Europe, accurate and up-to-date maps of its spatial distribution are not available at the national scale. This makes it difficult to estimate the extent and location of the poplar resource and calls for the development of a robust and timely stable approach for mapping large areas in order to ensure efficient monitoring. In this study, we investigate the potential of the Sentinel-2 time series to map the diversity of poplar plantations at the French countrywide scale. By comparing multiple configurations of spectral features based on spectral bands and indices over two years (2017 and 2018), we identify the optimal spectral regions with their respective time periods to distinguish poplar plantations from other deciduous species. We also define a novel poplar detection index (PI) with four variants that combine the best discriminative spectral bands. The results highlight the relevance of SWIR followed by red edge regions, mainly in the growing season, to accurately detect poplar plantations, reflecting the sensitivity of poplar trees to water content throughout their phenological cycle. The best performances with stable results were obtained with the PI2 poplar index combining the B5, B11, and B12 spectral bands. The PI2 index was validated over two years with an average producer’s accuracy of 92% in 2017 and 95% in 2018. This new index was used to produce the national map of poplar plantations in 2018. This study provides an operational approach for monitoring the poplar resource over large areas for forest managers." @default.
• W4292264037 created "2022-08-19" @default.
• W4292264037 creator A5002050260 @default.
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• W4292264037 creator A5033471275 @default.
• W4292264037 creator A5078648229 @default.
• W4292264037 date "2022-08-16" @default.
• W4292264037 modified "2023-10-18" @default.
• W4292264037 title "Sentinel-2 Poplar Index for Operational Mapping of Poplar Plantations over Large Areas" @default.
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• W4292264037 doi "https://doi.org/10.3390/rs14163975" @default.
• W4292264037 hasPublicationYear "2022" @default.
• W4292264037 type Work @default.

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