Ability and Sensitivity Study of Spectral Indices for Wildfire Severity Mapping (Case Study: Arabdagh-Golestan Reforestations)

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Alhaj Khalaf Mhd.wathek; SHATAEE JOUIBARY SHABAN; JAHDI ROGHAYEH

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Journal Paper

Paper Information

Journal: Journal of Forest and Wood Products Year:2020 | Volume:73 | Issue:1 Page(s): 97-110

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Information Journal Paper

Title

Ability and Sensitivity Study of Spectral Indices for Wildfire Severity Mapping (Case Study: Arabdagh-Golestan Reforestations)

Author(s)

Alhaj Khalaf Mhd.wathek | SHATAEE JOUIBARY SHABAN | JAHDI ROGHAYEH | Issue Writer Certificate

Keywords

Bi-Spectral indicesQ1

optimalityQ1

random forest algorithmQ1

satellite imagesQ1

wildfire severityQ2

Abstract

Fire severity mapping is very important for managing the fires in forest ecosystems. The extraction of spectral indices from optical sensors is recognized as one of the most effective bands for the classification of vegetation classes. In this study, the ability and sensitivity of some spectral indices extracted from Sentinel-2 and Landsat 8-OLI images with different spatial resolutions have been investigated for fire severity mapping using the random forest algorithm in a burned area located in the reforested area of Arabdagh, Golestan province. After necessary preprocessing on the bands, the appropriate mono and bi-temporal spectral vegetation indices were created. The optimal index values for bands in the bi-spectral spaces pre/post-fire were calculated to evaluate the sensitivity of bands to the changes occurring within the fire classes. The best results were obtained for the NIR-SWIR2 bands with an optimal index value of 0. 77 for Sentinel-2 and 0. 67 for Landsat8-OLI. The best indices were selected based on values of optimality index. The values of these indices were calculated after the fire as well as the differential (pre/post-fire) ones. The ground truth of fire severity classes map was prepared by a selective sampling method through field surveying. The classification was done with different indices by random forest (RF) algorithm and the results were assessed by the ground truth points. The result showed that the best results were obtained for a combination of many differential indices from all bi-bands of Landsat 8-OLI with kappa coefficient (0. 96).

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APA: Copy

Alhaj Khalaf, Mhd.wathek, SHATAEE JOUIBARY, SHABAN, & JAHDI, ROGHAYEH. (2020). Ability and Sensitivity Study of Spectral Indices for Wildfire Severity Mapping (Case Study: Arabdagh-Golestan Reforestations). JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES), 73(1 ), 97-110. SID. https://sid.ir/paper/402710/en

Vancouver: Copy

Alhaj Khalaf Mhd.wathek, SHATAEE JOUIBARY SHABAN, JAHDI ROGHAYEH. Ability and Sensitivity Study of Spectral Indices for Wildfire Severity Mapping (Case Study: Arabdagh-Golestan Reforestations). JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES)[Internet]. 2020;73(1 ):97-110. Available from: https://sid.ir/paper/402710/en

IEEE: Copy

Mhd.wathek Alhaj Khalaf, SHABAN SHATAEE JOUIBARY, and ROGHAYEH JAHDI, “Ability and Sensitivity Study of Spectral Indices for Wildfire Severity Mapping (Case Study: Arabdagh-Golestan Reforestations),” JOURNAL OF FOREST AND WOOD PRODUCTS (JFWP) (IRANIAN JOURNAL OF NATURAL RESOURCES), vol. 73, no. 1 , pp. 97–110, 2020, [Online]. Available: https://sid.ir/paper/402710/en

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