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Analysis of forest damage using geographic information systems: Case study of Pidie district, Aceh, Indonesia

Daud Fadhlullah TM, Hakim Amrin, Joni, Ramli Ichwana, Arahman Nasrul, Aulia Muhammad Prayogie

Ecological Engineering & Environmental Technology

2025

Vol. 26, iss. 3

111--119

This study aims to quantify land cover changes, carbon emissions, and carbon sequestration in Pidie Regency, Aceh Province, Indonesia, over a decade (2010–2020), addressing the gap in localized analyses of deforestation and its impacts on carbon dynamics. Utilizing high-resolution GIS and remote sensing data, the study integrated spatial analysis with carbon stock calculations to assess the implications of forest cover transitions across different forest functions. The findings reveal that production forests experienced the highest deforestation (1,008 ha), contributing to peak carbon emissions of 2,218,017 tons of CO₂ during 2018–2020. Concurrently, carbon sequestration peaked at 1,174,395 tons of CO₂, primarily due to reforestation and natural regeneration in secondary forests and shrubs. Protected forests retained the most extensive carbon stocks, reaching 22,649,615 tons of CO₂ in 2017, underscoring their critical role in carbon storage. This research highlights the balance between carbon loss from deforestation and gains from recovery, offering actionable insights for targeted reforestation, agroforestry systems, and community-based forest management. A limitation is its reliance on satellite data, which may affect the precision of land cover classifications in complex forest ecosystems. The findings provide practical value for policymakers and conservationists by identifying key areas for intervention and reinforcing the need for sustainable forest management practices. Information regarding the condition of the forest in Pidie Regency is limited and has yet to receive attention; however, the potential for more significant forest damage is likely to occur, and scientific data from this research can be an initial step in forest conservation efforts.

Removal of Natural Organic Matter from Water by Ultrafiltration Using Modified Polyethersulfone-Polyethylene Glycol Hexadecyl Ether Membrane

Az-Harry Muhammad, Arzaq Miftahul, Putri Haziqia Aulia, Mulyati Sri, Rosnelly Cut Meurah, Aprilia Sri, Barambu Nafiu Umar, Arahman Nasrul

Journal of Ecological Engineering

2024

Vol. 25, nr 11

28--36

The accumulation of organic pollutants in Indonesian waters is challenging for water treatment, because high pollutant levels increase the burden on the water technology used. Membrane technology can be used to optimize the filtration of organic pollutants. However, this technique is still limited by the fouling phenomenon on the membrane surface. The aim of this study was to investigate the effect of humidity on the structure formation and antifouling properties of the fabricated polyethersulfone (PES)-polyethylene glycol hexadecyl ether (PEG-HE) membranes. The PES membrane was modified by adding the additive PEG-HE and printed using the vapor and non-solvent induced phase separation (VNIPS) technique with air humidity of 70% and 90%. Changes in membrane properties and performance were analyzed before and after modification. Overall, the results show that adding 3% PEG-HE additive and using the VNIPS technique have a favorable impact on the membrane, namely, increasing the hydrophilicity, as well as the number and size of pores. The PES membrane modified with PEGHE additives and 90% air humidity exhibited the highest stability in various aspects of analysis, such as a water contact angle of 55.11°, a pure water flux of 69.86 L/m2.h, a flux recovery ratio (FRR) of 91.91%, and humus acid rejection of 86.84%. In conclusion, the present research provides valuable insights into developing PES membranes with antifouling properties for filtering organic pollutants.