Godinho Cassol, H.L., de O. C. Aragao, L.E., Moraes, E.C. et al. (2 more authors) (2019) Polarimetric Alos/Palsar-2 data for retrieving aboveground biomass of secondary forest in the Brazilian Amazon. In: IGARSS 2019 - IEEE International Geoscience and Remote Sensing Symposium. IGARSS 2019 - IEEE International Geoscience and Remote Sensing Symposium, 28 Jul - 02 Aug 2019, Yokohama, Japan. IEEE , pp. 1773-1776. ISBN 9781538691557
Abstract
Secondary forests (SFs) are one of the major carbon sink in the Neotropics due to the rapid carbon assimilating in their aboveground biomass (AGB). However, the accurate contribution of the SFs to the carbon cycle is a great challenge because of the uncertainty in AGB estimates. In this context, the main objective of this work is to explore polarimetric Alos/Palsar-2 data from to model AGB in the SFs of the Central Amazon, Amazonas State. Forest inventory was conducted in 2014 with the measured of 23 field plots. Multiple linear regression analysis was performed to select the best model by corrected AIC w and validated by leave-one-out bootstrapping method. The best fitted model has six parameters and explained 65% of the aboveground biomass variability. The prediction error was calculated to be RMSEP = 8.8 ± 2.98 Mg.ha -1 (8.75%). The main polarimetric attributes in the model were those direct related to multiple scattering mechanisms as the Shannon Entropy and the volumetric mechanism of Bhattacharya decomposition; and those related to increase in double-bounce as the co-polarization ratio (VV/HH) resulted of soil-trunk interactions. Such models are intended to improve accuracy for mapping SFs AGB in often cloudy environments as in the Brazilian Amazon.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | SAR; Amazon Forest; Polarimetry; Scattering Decomposition; Second Growth |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Mathematics and Statistics (Sheffield) |
Funding Information: | Funder Grant number Natural Environment Research Council None |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 22 Jan 2020 11:05 |
Last Modified: | 14 Nov 2020 01:39 |
Status: | Published |
Publisher: | IEEE |
Refereed: | Yes |
Identification Number: | 10.1109/igarss.2019.8898251 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:155918 |