Title :
Disturbances in the Siberian boreal forest - mapping fire-scars using multitemporal, multisensor approach
Author :
George, C.T. ; Gerard, F. ; Baltzer, H. ; McCallum, I. ; Shvidenko, A. ; Nilsson, S. ; Schmullius, C.
Author_Institution :
Centre for Ecology & Hydrology, Abbots Ripton, UK
Abstract :
This paper summarizes a technique to map historical (1 to 10 years old) fire scars using a vegetation index, NDSWIR, based on the SWIR and NIR. A temporal set of NDSWIR SPOT-VGT images of Siberia were segmented and then recombined with the original NDSWIR images to form a per-pixel fire scar probability map. The results show a good agreement between the fire scar probability map, hotspot data and Landsat quicklooks, any discrepancies being accounted for by the differing dates of imagery and low resolution of SPOT-VGT.
Keywords :
fires; forestry; geophysical techniques; image segmentation; probability; vegetation mapping; Landsat quicklooks; NDSWIR; NIR; SPOT-VEGETATION images; SWIR; Siberian Boreal Forest; fire scar probability map; fire-scars mapping; hotspot data; multisensor approach; multitemporal approach; vegetation index; Clouds; Environmental factors; Fires; Global warming; Hydrology; Image segmentation; Satellites; Snow; Soil; Vegetation mapping;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1293819
