Detecting Burnt Tropical Forest using Optical and Microwave Remotely Sensed Data in South Sumatra, Indonesia.

3. Methods
In order to investigate the effect of forest fire and to asses the ability of remote sensing data to detect, differentiate and classify forest damaged caused by fire, remotely sensed data and image processing techniques were employed. Data and basic methodology can be seen in Figure 1.

Figure 1. Basic Methodology

4. Results and Discussions
Several operations of image pre-processing and processing are still under way to analyse the data of this research. However, preliminary results of the visual interpretation are presented in this paper. Figure 2 (a) and (b), (c) and (d) show Landsat TM image (bands combination 453 in RGB) of two areas of 3x3 Km from the test site. The images show the forest before and after the fire 1996-1998. The visual interpretation of the multi-temporal optical and radar satellite data resulted in follow classes recognition:

Landsat TM image of November 1996, bands combination 453
1. Logged over forest
2. Young secondary forest
3. Virgin forest (dense primary forest)
4. Transmigration area (home stead garden)
5. Grass land
Landsat TM image of June 1998, bands combination 453
1. Burnt logged over forest (distinct)
2. Burnt young secondary forest (not distinct)
3. Unburned logged over forest (distinct)
4. Burnt virgin forest (distinct)
5. Burnt home stead garden (distinct)
6. Unburned grass land (not distinct)
The 1996 ERS-2 radar image
1. Logged over forest
2. Young re-growth (young secondary forest)
3. Virgin forest (dense primary forest)
4. Transmigration area (home stead garden)
5. Bare land
6. Grass land
The 1998 ERS-2 radar image
1. Burned area of logged over forest
2. Burned area of young secondary forest
3. Unburned logged over forest
4. Burnt virgin forest
5. Burnt home stead garden (transmigration area)
6. Unburned area of grass land

(a)	Landsat TM 453 in RGB Nov 1996 Lof = logged over forest Dlof= degraded logged over forest
(b)	Landsat TM 453 in RGB Jun 1998 Grs = grass Blof = burnt lo gged over forest
(c)	Landsat TM 453 in RGB Nov 1996 Vf = virgin forest
(d)	Landsat TM 453 in RGB Jun 1998 Bvf = burnt virgin forest Uvf = unburnt virgin forest

References

Stellingwerf D.A. and Yousif A. Hussin. 1997. Measurement and Estimation of Forest Stand Parameters Using Remote Sensing. Utrecht, The Netherlands : VSP. 272 pp.
Goldammer J. G. and Valentin V. Furyaev. 1996. Fire in Ecosystem of Boreal Eurasia. Dordrecht/Boston/London : Kluwer Academic Publishers. Pages : 1-20 and 139-149

Page 2 of 2
| Previous |