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Communication Dans Un Congrès Année : 2015

Satellite Image Based Mapping of Wetland Tundra Landscapes Using ILWIS GIS

Polina Lemenkova

Résumé

Presentation shows an application of ILWIS GIS for RS data processing with a case study of detecting land cover changes during 20-year period (1988-2011) in Yamal Peninsula, Arctic. Research goals: Distribution of different types of landscapes in the wetland tundra of the Yamal Peninsula; Monitoring changes in the landscapes of tundra; Analysis of the landscape dynamics for 2 decades (1988-2011). Data include 2 satellite images: Landsat TM for 1988 and 2011. Methods include clustering, segmentation and classification. Technical approach: Landsat TM data processing by ILWIS GIS. Methods: Supervised classification of Landsat TM images. Results demonstrated changes in selected land cover types. Study area: tundra landscapes in the wetlands of the Yamal Peninsula in the Far North of Russia. Statistical results of calculations of types of vegetation cover were obtained in a semi-automatic mode in ILWIS GIS. In 1988 ’willow shrubs’ type covered 412,292 pixels from the total part of the AOI, and ’high willow’ class is 823,430 pixels. 2011: willow increased to 651427 pixels, (’willow shrubs’), and 893092 pixels (’high willows’). Both combined classes of willows, typical for AOI with a high water content, cover total 1544519 pixels, which is 40.27 %. Area of grasses decreased compared to shrub and willow. Max area covered by class ’heather and dry grass’ is 933798 pixels
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Dates et versions

hal-02447111 , version 1 (21-01-2020)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

  • HAL Id : hal-02447111 , version 1

Citer

Polina Lemenkova. Satellite Image Based Mapping of Wetland Tundra Landscapes Using ILWIS GIS. Actual Problems of the State and Management of Water Resources, Volga State University of Technology, Mar 2015, Yoshkar-Ola, Russia. pp.22. ⟨hal-02447111⟩

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