Analysis of peat soil physical properties under different land uses in Seluma Regency, South Sumatera
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Abstract
The results showed that rubber plantations had the lowest bulk density (0.35 ton/m³) and the highest permeability (87.87 cm/hour), while paddy fields had the highest bulk density (0.66 ton/m³) and the lowest permeability (5.87 cm/hour). The highest total pore space was found in rubber plantations (74.56%), whereas paddy fields had the lowest pore space in the subsoil (56.02%). Water content was highest in the subsoil of rubber plantations (38.46%) and lowest in shrubland (22.22%). The highest organic C-content was observed in rubber plantations (33.68%), while the lowest was in paddy fields (9.6%). Oil palm plantations and paddy fields had more mature peat (sapric), whereas rubber plantations and shrubland maintained more natural peat conditions. Analysis using Partial Least Squares Structural Equation Modeling, demonstrated that land use significantly affects peat soil's physical properties, particularly bulk density, total pore space, permeability, and water content. Land conversion influences peat subsidence and decomposition, highlighting the need for sustainable management to prevent land degradation and maintain ecosystem balance.
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