Estimation of boreal forest growing stock volume in russia from sentinel-2 msi and land cover classification


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Article
Change log
Authors
Rees, WG 
Tomaney, J 
Tutubalina, O 
Zharko, V 
Bartalev, S 
Abstract

jats:pGrowing stock volume (GSV) is a fundamental parameter of forests, closely related to the above-ground biomass and hence to carbon storage. Estimation of GSV at regional to global scales depends on the use of satellite remote sensing data, although accuracies are generally lower over the sparse boreal forest. This is especially true of boreal forest in Russia, for which knowledge of GSV is currently poor despite its global importance. Here we develop a new empirical method in which the primary remote sensing data source is a single summer Sentinel-2 MSI image, augmented by land-cover classification based on the same MSI image trained using MODIS-derived data. In our work the method is calibrated and validated using an extensive set of field measurements from two contrasting regions of the Russian arctic. Results show that GSV can be estimated with an RMS uncertainty of approximately 35–55%, comparable to other spaceborne estimates of low-GSV forest areas, with 70% spatial correspondence between our GSV maps and existing products derived from MODIS data. Our empirical approach requires somewhat laborious data collection when used for upscaling from field data, but could also be used to downscale global data.</jats:p>

Description
Keywords
growing stock volume, boreal forest, Russian arctic, tree allometry, Sentinel-2
Journal Title
Remote Sensing
Conference Name
Journal ISSN
2072-4292
2072-4292
Volume Title
13
Publisher
MDPI AG
Sponsorship
British Council (352397111)
Foreign and Commonwealth Office (INT-T5-02)
Foreign and Commonwealth Office (Unknown)
British Council; Ministry of Science and Higher Education of the Russian Federation; EU Transnational Access Interact scheme; UK Foreign Commonwealth and Development Office