Title :
Monitoring the Siberian boreal forest using ENVISAT/ASAR data: first analysis results
Author :
Hermitte, J.L. ; Le Toan, Thuy ; Grippa, Manuela ; Bouvet, Alexandre
Author_Institution :
Centre d´´Etudes Spatiale de la Biosphere, Toulouse
Abstract :
This paper investigates the use of EVISAT/ASAR data for deriving forest information over Central Siberia. Temporal series of alternating polarisation data (HH and HV) at low and high incidence angles acquired at the Bolshemurstinsky test area are analysed. The backscattering coefficient of different forest types and land cover is analysed as a function of time, polarisation and incident angle using a GIS forest database available within the Siberia-II project. The results of the analysis indicate that HV data are adapted to forest/non forest mapping and both HH and HV are sensitive to low biomass values up to 50 m3 /ha
Keywords :
forestry; geographic information systems; radar polarimetry; remote sensing by radar; synthetic aperture radar; vegetation mapping; visual databases; Bolshemurstinsky test area; Central Siberia; ENVISAT-ASAR data; GIS forest database; HH polarisation data; HV polarisation data; Siberia-2 project; Siberian boreal forest monitoring; alternating polarisation data; backscattering coefficient; biomass values; incidence angles; land cover; nonforest mapping; temporal series; Biomass; Data analysis; Filtering; Finite impulse response filter; Geographic Information Systems; Image databases; Monitoring; Polarization; Testing; Time series analysis;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-8742-2
DOI :
10.1109/IGARSS.2004.1370176
