Detection of forest changes using ALOS PALSAR satellite images
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2007

A controlled experiment has been performed to quantify the ability to detect clear-cuts using ALOS PALSAR data. The experiment consisted of 8 old spruce dominated stands with a size of about 1.5 ha, located at a test site in southern Sweden. Four of the stands were clear-felled and the remaining stands were left untreated for reference. A time series of PALSAR images were acquired prior to, during, and after treatment, including 7 Fine Beam Single polarization (FBS, look angle 34.3°, HH-polarization) SAR images. The results clearly show that the clear-felled stands could be separated from the reference stands. The drop in backscattering coefficient between the reference and the clear-felled stands was on average 2.1 dB. This implies that ALOS PALSAR data potentially can be used for large-scale mapping of changes in forest cover.

clear-cut

forest

SAR

wind-throw

change detection

ALOS

Författare

J.E.S. Fransson

M. Magnusson

H. Olsson

Leif Eriksson

Chalmers, Institutionen för radio- och rymdvetenskap, Radarfjärranalys

Gustaf Sandberg

Chalmers, Institutionen för radio- och rymdvetenskap, Radarfjärranalys

Gary Smith Jonforsen

Chalmers, Institutionen för radio- och rymdvetenskap, Radarfjärranalys

Lars Ulander

Chalmers, Institutionen för radio- och rymdvetenskap, Radarfjärranalys

IEEE Geoscience and Remote Sensing Symposium (IGARSS 2007), Barcelona, Spain, July 23-27, 2007

Vol. DOI: 10.1109/IGARSS.2007.4423308 2330-2333

Ämneskategorier

Skogsvetenskap