Post-Fire Analysis of Topogenic Peatland Characteristics in Pelalawan Regency, Riau
Abstract
Peatland fires contribute to overall ecosystem degradation, affecting physical, chemical, and biological components, including the loss of carbon stocks, alterations in soil structure, and a decline in land quality. This study aims to analyze changes in morphological characteristics, physical and chemical properties, and vegetation cover in burned and unburned peatlands in Pelalawan Regency. The research was conducted in the peatlands of Pangkalan Kerinci District using a descriptive approach with purposive soil sampling. The results indicated that across all three peatland conditions—peat swamp land, burned peat, and unburned peat—the peat maturity level was classified as sapric, with relatively similar physical characteristics. Peat swamp land exhibited higher water content, bulk density, particle density, and porosity compared to the other two conditions, while burned land showed the lowest water content and porosity. Variations in soil color did not correspond to significant changes in soil physical properties, suggesting that peatland fires in Pelalawan Regency did not substantially affect the morphological, physical, or chemical characteristics of the soil, which remained within the same classification range. Additionally, on the peatland burned in 2019, a natural succession process was observed, with the dominant vegetation being the grass Leersia oryzoides.
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