Training area concept in a two-phase biomass inventory using airborne laser scanning and RapidEye satellite data

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Abstract

This study evaluated the accuracy of boreal forest above-ground biomass (AGB) and volume estimates obtained using airborne laser scanning (ALS) and RapidEye data in a two-phase sampling method. Linear regression-based estimation was employed using an independent validation dataset and the performance was evaluated by assessing the bias and the root mean square error (RMSE). In the phase I, ALS data from 50 field plots were used to predict AGB and volume for the 200 surrogate plots. In the phase II, the ALS-simulated surrogate plots were used as a ground-truth to estimate AGB and volume from the RapidEye data for the study area. The resulting RapidEye models were validated against a separate set of 28 plots. The RapidEye models showed a promising accuracy with a relative RMSE of 19%-20% for both volume and AGB. The evaluated concept of biomass inventory would be useful to support future forest monitoring and decision making for sustainable use of forest resources. © 2013 by the authors.

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Rana, P., Tokola, T., Korhonen, L., Xu, Q., Kumpula, T., Vihervaara, P., & Mononen, L. (2013). Training area concept in a two-phase biomass inventory using airborne laser scanning and RapidEye satellite data. Remote Sensing, 6(1), 285–309. https://doi.org/10.3390/rs6010285

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