gesjGEOGRAPHY, ENVIRONMENT, SUSTAINABILITYGEOGRAPHY, ENVIRONMENT, SUSTAINABILITY2071-93882542-1565Russian Geographical Society10.24057/2071-9388-2024-3217gesj-3643Research ArticleRESEARCH PAPERСтатьиLand cover and burn severity dynamics of the Ogan Komering Ilir peatlands from 2015 to 2023 using sar and optical datasetsKhakimMokhamad Y. N.

Jl. Palembang-Prabumulih Km. 32, Indralaya, Ogan Ilir, South Sumatra, 30662 

myusup_nkh@mipa.unsri.ac.idPoerwonoPradanto

Jl. Palembang-Prabumulih Km. 32, Indralaya, Ogan Ilir, South Sumatra, 30662 

AffandiAzhar K.

Jl. Palembang-Prabumulih Km. 32, Indralaya, Ogan Ilir, South Sumatra, 30662 

AnharMuhamad F.

Jl. Palembang-Prabumulih Km. 32, Indralaya, Ogan Ilir, South Sumatra, 30662 

IndrawanFebri

Jl. Palembang-Prabumulih Km. 32, Indralaya, Ogan Ilir, South Sumatra, 30662 

ArdiansyahTomi

Jl. Palembang-Prabumulih Km. 32, Indralaya, Ogan Ilir, South Sumatra, 30662 

TsujiTakeshi

113-8654, 7-3-1 Hongo, Bunkyo-ku 

Universitas SriwijayaIndonesiaUniversity of TokyoJapan202407102024173618Copyright © Khakim M., Poerwono P., Affandi A., Anhar M., Indrawan F., Ardiansyah T., Tsuji T., 20242024Khakim M., Poerwono P., Affandi A., Anhar M., Indrawan F., Ardiansyah T., Tsuji T.Khakim M., Poerwono P., Affandi A., Anhar M., Indrawan F., Ardiansyah T., Tsuji T.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://ges.rgo.ru/jour/article/view/3643

Land cover changes and wildfires have had an increasing impact on the Ogan Komering Ilir Peatland ecosystems in South Sumatra, Indonesia. This study aims to understand the peatland land cover and burn severity dynamics from 2015 to 2023. The random forest method was applied to classify land cover, while the differenced Normalized Burn Ratio (dNBR) was used for mapping fire severity. We combined various satellite data to classify land cover, consisting of Landsat-8, Sentinel-1, and Sentinel-2. Landsat-8 or Sentinel-2 images were also used for the dNBR calculation. We revealed complex climate, human, and restoration interactions in land cover and burn severity fluctuations over 273,799 hectares of the study area from 2015 to 2023. The 2015 El Niño-induced drought led to 21,754 fire hotspots and 2.01% of the area in high-severity burns. In 2016, it reduced tree cover by 10.18% and increased bare/sparse vegetation by 6.11%. The 2019 El Niño event led to 7,893 fire hotspots, lessening unburned areas and worsening burns. Due to the extreme effects of the 2015 drought, restoration efforts between 2016 and 2020 significantly decreased fire hotspots in 2016. Tree cover stabilized, reaching 48.46% by 2020, whereas unburned areas rose to 69.46% in 2018, showing good recovery and lower fire severity. In 2021-2023, fire hotspots were modest relative to El Niño years but increased in 2023. After 2020, tree cover decreased, but other land cover classes fluctuated. Therefore, continual monitoring and adaptive management are critical for reducing negative consequences and increasing ecosystem resilience.

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The authors declare that there are no conflicts of interest present.