Tropical forest tree height and above ground biomass mapping in Nepal using TanDEM-X and ALOS PALSAR data

Oleg Antropov, Yrjö Rauste, Katri Tegel, Yamuna Baral, Virpi Junttila, Tuomo Kauranne, Tuomas Häme, Jaan Praks

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    1 Citation (Scopus)

    Abstract

    In this study, a set of bistatic interferometric SAR images acquired by the TanDEM-X mission are used along with fully polarimetric ALOS PALSAR data for the assessment of tropical forest properties in Nepal. Research to be presented at the conference concentrates on several scientific goals. First, location of interferometric scattering phase centre inside forest canopy is investigated using reference ALS measured canopy height model. Means for forest tree height extraction using both model based approaches (similar to Random Volume over Ground) and semi-empirical models are investigated and reported. It is shown, that forest tree height retrieval is possible with RMSE around 2.8 meters (R2=0.68). Secondly, correlations between ALOS PALSAR and tropical forest data are analysed, and AGB estimation using fully polarimetric SAR features is performed. Several statistical and non-parametric methodologies were tested and compared. Thirdly, forest AGB estimation is done using both TanDEM-X based tree height and L-band PolSAR features using statistical inversion framework.

    Original languageEnglish
    Title of host publication2018 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2018)
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages5334-5336
    ISBN (Electronic)978-1-5386-7150-4, 978-1-5386-7149-8
    ISBN (Print)978-1-5386-7151-1
    DOIs
    Publication statusPublished - 31 Oct 2018
    MoE publication typeA4 Article in a conference publication
    Event38th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Valencia, Spain
    Duration: 22 Jul 201827 Jul 2018

    Publication series

    SeriesIEEE International Geoscience and Remote Sensing Symposium Proceedings
    Volume38
    ISSN2153-6996

    Conference

    Conference38th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018
    Country/TerritorySpain
    CityValencia
    Period22/07/1827/07/18

    Keywords

    • Above ground biomass
    • ALOS PALSAR
    • Forest tree height
    • K nearest neighbors
    • Random volume over ground
    • TanDEMX

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