Phytomass and soil carbon storage of different land cover classes in the Usa river basin ...

• Main Authors: Hugelius, Gustaf, Virtanen, Tarmo A, Kaverin, Dmitry, Pastukhov, Alexander, Rivkin, Felix, Marchenko, Sergey, Romanovsky, Vladimir E, Kuhry, Peter
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2011
• Subjects: International Polar Year 2007-2008 IPY; Active layer thickness; International Polar Year; IPY; Peat; permafrost; Thermokarst
• Online Access: https://dx.doi.org/10.1594/pangaea.811368; https://doi.pangaea.de/10.1594/PANGAEA.811368

This study describes detailed partitioning of phytomass carbon (C) and soil organic carbon (SOC) for four study areas in discontinuous permafrost terrain, Northeast European Russia. The mean aboveground phytomass C storage is 0.7 kg C/m**2. Estimated landscape SOC storage in the four areas varies between 34.5 and 47.0 kg C/m**2 with LCC (land cover classification) upscaling and 32.5-49.0 kg C/m**2 with soil map upscaling. A nested upscaling approach using a Landsat thematic mapper land cover classification for the surrounding region provides estimates within 5 ± 5% of the local high-resolution estimates. Permafrost peat plateaus hold the majority of total and frozen SOC, especially in the more southern study areas. Burying of SOC through cryoturbation of O- or A-horizons contributes between 1% and 16% (mean 5%) of total landscape SOC. The effect of active layer deepening and thermokarst expansion on SOC remobilization is modeled for one of the four areas. The active layer thickness dynamics from 1980 to 2099 ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...