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Poster Session 1
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Forest Burned Area Mapping by using SPOT Images
Results and Discussion
- Results from Aerial Photographic Interpretation
The area of the burned area from the aerial photograph at 4.3.1998 was 287.78 ha. The photograph was shown in Figure 1.
Fig 1. BW Photograph Film of Forest Burned Area
The area of the 53rd compartment of Yu-Shan working circle and the 15th & 16th compartment of Hsiu-Ku-Luan working circle were calculated and was given in table 1.
Table 1. The Burned Area of Yu-Shan Working Circle and Hsiu-Ku-Luan Working Circle (unit hectare)
| Working Circle |
Comp. of Yu-Shan |
Comp. of Hsiu-Ku-Luan |
Total |
| Situation |
53rd comp. |
15th comp. |
16th comp. |
| Serious |
7.64 |
0.03 |
---- |
7.67 |
| Moderate |
2.85 |
50.60 |
28.34 |
81.79 |
| Light |
0.02 |
47.49 |
150.81 |
198.32 |
| Total |
10.51 |
98.12 |
179.15 |
287.78 |
| Comp.: compartment |
The disaster zone of the 53rd compartment of Yu-Shan working circle and the 15th & 16th compartment of Hsiu-Ku-Luan working circle was shown in figure 2.
Figure 2. The Map of Equal-class of Forest Fire Disaster
- The Interpreted Results of the Satellite Images
Figure 3 showed the SPOT image of the forest fire in 4.4.1998. The area, which was in black color, was the burned area and it was equal to 164.98a. and the white color area was the smoke of forest fire
Figure 3. The interpreted forest fire map from satellite image.
Conclusion
- The technique of aerial phtogrammetry has being broadly used on surveying of forestry and agriculture disaster for it can afford the necessary information to the relative institute and spend less labor and cost. Although the information an be got from both aerial phtotogrammetry and satellite images classification and they can help maturely, but in case of emergent disaster the satellite images can afford information more fast.
- The resulted area was 287.78 ha from the forest fire photograph that was taken in 4.3.1998. The accuracy would be up to the proficient training, experience, the quality and kind of photograph.
- The calculated burned area 164.9ha was go from SPOT image. The precision rate was 98.1% by comparing to aerial photograph interpretation. The result was worthwhile.
- It will be a tendency for Taiwan forestry Bureau to integrate the technique of satellite remote sensing, GPS and GIS on forest fire fighting and fire danger assessment.
References
- Remote Sensing Training Project-Resource Satellite Data and GIS Training Project 1998 Taiwan Forest Experimental Institute
- The Report of Filling a Data Base on Agricultural Disaster Survey and Aerial Photogeimmetric Data 1998 AOC of Executive Yuan Edited Forest Bureau.
- Report of agriculture disaster surveying and the filling of photogra-mmetry data base. AOC conducted non-experiment project. Edited by Agricultural and Forest Surveying Institute of Forestry Bureau.
- Forestry Chronicle of Taiwan Republic of China, 1993, Associate of Chinese Forestry, Chinese Forestry Book Series No. 936.
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- Ho, Wei-Jeng, 1997. The workshop and forest fire fighting and prevention of Taiwan Forestry Bureau.
- The execution Project of Hua-Lien Working Circle, 1990, Hua-Lien Working Circle of Taiwan Forest Bureau.
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- D. Pozo, F. J. Olmo, and L. Alados-Arboledas, 1997, Fire Detection and Growth Monitoring Using a Multi-temporal Techniques on AVHRR Mid-Infrared and Thermal channels REMOTE SENS. ENVIRON.60; 111-120
- ERICBARRETT and LEONAD FCURTIS 1992. Introduction to Environmental Remote Sensing pp 320-321. CHAMPMAN & Hall.
- Emillo Chuvieceo and M. Pilar Martin, 1994, Global Fire Mapping and Fire Danger Estimation Using AVHRR Images Photogeommetric Engineering & Remote Sensing Vol. 60, No. 5, May pp. 563-570
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