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L-Band Polarimetric Target Decomposition of Mangroves of the Rufiji Delta, Tanzania

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dc.creator Brown, Ian
dc.creator Mwansasu, Simon
dc.creator Westerberg, Lars-Ove
dc.date 2016-02-17T08:08:06Z
dc.date 2016-02-17T08:08:06Z
dc.date 2016-02-09
dc.date.accessioned 2018-04-18T11:17:49Z
dc.date.available 2018-04-18T11:17:49Z
dc.identifier Brown, I.; Mwansasu, S.; Westerberg, L.-O. L-Band Polarimetric Target Decomposition of Mangroves of the Rufiji Delta, Tanzania. Remote Sens. 2016, 8, 140.
dc.identifier 10.3390/rs8020140
dc.identifier http://hdl.handle.net/123456789/421
dc.identifier.uri http://hdl.handle.net/123456789/9340
dc.description The mangroves of the Rufiji Delta are an important habitat and resource. The mangrove forest reserve is home to an indigenous population and has been under pressure from an influx of migrants from the landward side of the delta. Timely and effective forest management is needed to preserve the delta and mangrove forest. Here, we investigate the potential of polarimetric target decomposition for mangrove forest monitoring and analysis. Using three ALOS PALSAR images, we show that L-band polarimetry is capable of mapping mangrove dynamics and is sensitive to stand structure and the hydro-geomorphology of stands. Entropy-alpha-anisotropy and incoherent target decompositions provided valuable measures of scattering behavior related to forest structure. Little difference was found between Yamaguchi and Arii decompositions, despite the conceptual differences between these models. Using these models, we were able to differentiate the scattering behavior of the four main species found in the delta, though classification was impractical due to the lack of pure stands. Scattering differences related to season were attributed primarily to differences in ground moisture or inundation. This is the first time mangrove species have been identified by their scattering behavior in L-band polarimetric data. These results suggest higher resolution L-band quad-polarized imagery, such as from PALSAR-2, may be a powerful tool for mangrove species mapping.
dc.description Swedish International Development Agency European Space Agency and Japanese Aerospace Exploration Agency
dc.language en
dc.publisher MDPI
dc.subject mangroves
dc.subject synthetic aperture radar
dc.subject polarimetry
dc.subject ALOS PALSAR
dc.subject Deltas
dc.subject Rufiji
dc.title L-Band Polarimetric Target Decomposition of Mangroves of the Rufiji Delta, Tanzania
dc.type Journal Article, Peer Reviewed


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