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All Journal Katalogis JURNAL AKUNTANSI DAN AUDITING Tunas Geografi Peronema Forestry Science Journal Journal of Tropical Soils Jurnal Penelitian Ekosistem Dipterokarpa Jurnal Rekayasa Mesin JURNAL AGRILAND Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Penelitian Kelapa Sawit Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Keperawatan Komprehensif (Comprehensive Nursing Journal) Minda Baharu Journal of Humanities and Social Studies Journal of Saintech Transfer AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Hutan Tropika Jurnal Penelitian Ekosistem Dipterokarpa Sinergi Polmed : Jurnal Ilmiah Teknik Mesin PERTANIAN TROPIK Agrikan: Jurnal Agribisnis Perikanan International Journal of Science and Environment Journal of Accounting Research, Organization and Economics (JAROE) JPNM : Jurnal Pustaka Nusantara Multidisiplin Tarsius: Jurnal Pengabdian Tarbiyah, Religius, Inovatif, Edukatif dan Humanis Journal of Environmental and Development Studies JIMEKA Nexus
Rahmawaty, Rahmawaty
Program Studi Kehutanan, Fakultas Kehutanan, Universitas Sumatera Utara
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Land Cover Change Dynamics As an Indicator of Deforestation Rate in Gunung Leuser National Park Agus, Rihady; Rahmawaty, Rahmawaty; Alief Aththorick, T.; Samsuri, Samsuri; Nyak, Erwin
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026 (Indonesia - Jepang - United Kingdom)
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.363

Abstract

Gunung Leuser National Park (GLNP) is one of the most important conservation areas in Indonesia, serving as a habitat for various rare and protected species such as the Sumatran tiger, elephant, rhinoceros, and orangutan. Nevertheless, this area faces serious threats from deforestation caused by human activities, including illegal logging, agricultural expansion, and infrastructure development. This study aims to analyze the rate of deforestation occurring in GLNP from 2008 to 2023, to examine land cover changes in the park up to 2033, and to assess community attitudes, perceptions, and participation related to deforestation in the GLNP area. The methods employed include multi-temporal satellite image analysis (Landsat 5 and Landsat 8) using supervised classification through Google Earth Engine (GEE) and Geographic Information System (GIS) tools. Data accuracy was evaluated using ground truth validation, along with an assessment of community perceptions and participation regarding land cover changes. The results indicate that during the study period, forest area decreased by approximately 18,822.71 hectares (2.38%), accompanied by an increase in shrubland and other non-forest land covers, indicating gradual land conversion. The dominant factors driving deforestation in GLNP include proximity to roads and settlements. Future deforestation rates were predicted using a Cellular Automata–based spatial modeling approach, which estimates land conversion patterns in the absence of mitigation measures. Deforestation in the GLNP area is closely linked to the role of surrounding communities; the findings reveal that local communities are generally less actively involved and less willing to contribute to conservation efforts in GLNP. This study provides important insights for conservation planning and sustainable land-use policy formulation in Gunung Leuser National Park.
Analysis of Clouding and Extinguishing Forest and Land Fires in Lumut Maju Village, Lumut Sub-district, Central Tapanuli Regency Rahmawaty, Rahmawaty; Sawal R Pulungan; Widya Natasha Napitupulu; Rolyn SDH Sinaga; Sylvia F Panjaitan; Young F Limbeng
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 10 No. 2 (2025): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v10i2.22329

Abstract

Forest and land fires are a recurring environmental threat in many parts of Indonesia. This study aims to analyze the level of fire vulnerability and the effectiveness of fire suppression efforts in Lumut Maju Village, Lumut Sub-district, Central Tapanuli Regency, North Sumatra Province. The analysis was conducted using a Geographic Information System (GIS)-based spatial approach with ArcGIS Software. The results indicate that most areas in Lumut Maju Village exhibit moderate to high levels of fire vulnerability, influenced by topographic conditions, land cover, human activities, and climatic factors. The implementation of fire suppression highlighted the importance of team preparedness, adequate equipment, and rapid response in controlling fires, despite challenges such as difficult terrain and limited water sources. GIS-based fire vulnerability mapping proved effective in supporting mitigation strategies and informed decision-making. Active community participation and strong coordination among stakeholders are essential to enhance sustainable forest and land fire prevention and control efforts.
Evaluasi Sifat Fisik Biodiesel dari Minyak Jelantah dengan Variasi Metanol untuk Optimasi Kinerja Peralatan Konstruksi dan Sistem Elektronika Dharma, Surya; sebayang, rihat; Rahmawaty, Rahmawaty; Kamil, Idham; Ritonga, Efri Debby Ekinola; Hasnita, Ulfa; Hasibuan, Yetty Meuthia; Lubis, Riadini Wanty; Ibrahim, Husin; Silalahi, Jovian Zefanya Richard Chrisardo
Nexus Sains dan Teknologi Vol. 1 No. 2 (2025): Nexus: Jurnal Sains dan Teknologi
Publisher : Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/nst.v1i2.2873

Abstract

Minyak jelantah merupakan limbah rumah tangga yang dapat mencemari lingkungan apabila dibuang sembarangan. Salah satu cara pemanfaatan limbah tersebut adalah dengan mengonversinya menjadi biodiesel melalui proses transesterifikasi. Penelitian ini bertujuan untuk mengevaluasi pengaruh perbandingan metanol terhadap karakteristik biodiesel yang dihasilkan dari minyak jelantah. Rasio metanol yang digunakan adalah 30:70, 40:60, dan 50:50 (v/v), dengan penambahan katalis basa KOH sebesar 1% dan suhu reaksi dijaga pada 60 °C. Parameter yang dianalisis mencakup viskositas kinematik, titik nyala, bilangan asam, dan densitas, yang seluruhnya diuji pada suhu 40 °C dan dibandingkan dengan standar kualitas bahan bakar ASTM D6751 dan EN 14214. Hasil penelitian menunjukkan bahwa rasio metanol 50:50 menghasilkan biodiesel dengan kualitas paling unggul, dengan viskositas 3,75 mm²/s, flash point 109,2 °C, bilangan asam 0,34 mgKOH/g dan densitas sebesar 881 kg/m³. Dengan demikian, rasio tersebut dianggap paling optimal untuk menghasilkan biodiesel berbahan minyak jelantah yang memenuhi standar kualitas bahan bakar internasional, sehingga layak digunakan secara luas dan berkelanjutan.
Co-Authors ., Cholish Abdul Azis Abdul Rauf Abdul Rauf Abdul Rauf Abdul Rauf ABDUL RAUF Abdul Rauf Abdul Rauf Abdul Rauf Abdul Rauf Abdul Rauf Abdul, Rauf Abdullah Abu Hassan Abu Bakar ACHMAD FAUZI Aditya, M. Aldi Adnan Adnan Agus Toni Tarigan Agus, Rihady Agustoni Tarigan Alief Aththorick Alief Aththorick, T. Aning Tedong, Peter Arif NURYAWAN Arman Arman Asnan Siregar Athorick, Alief Aththorick, T. Alief Aulia, Dwira Nirfalini Aulia, Rafika Azri Syauki Badrul Ainy Dalimunthe Bahri, Nisfan Bahri, Ruthia Benny, Hidayat Cut Afrianandra, Cut Dara Yovita, Cut Safira Darwanis Darwanis DE, Harahap Delli Sabudu Delvian Delvian Desi Yani Harahap Devita Saragih Dewi Budiati T.J. Said Diah Ramadhani Dina Octavia, Dina Octavia Edison Parulian Sihombing Erwin Nyak Akoeb Evayani, Evayani Evi Mutia Fadhlan Saini Fauziah Aida Fitri fitra syawal Fitra Syawal Harahap Fitra Syawal Harahap Frastika, Sintike FS, Harahap Fuad Abdullah, Muhammad Fujiwara, Takahiro Grandis Tua Sitanggang Gyta Sari Harahap, Dharma Hadi Wijoyo Hamdani Harahap, R. Harahap, Darmadi Erwin Harahap, Parmanoan HARTIKA, LIA Hasibuan, Yetti Meuthia Hasibuan, Yetty Meuthia Hasmadi Ismail, Mohd Hasnita, Ulfa Heri Rizki Sitepu Heri Santoso Hilwa Walida Hilwa, Walida Hosea O Siregar, Anggiat Ibrahim, Husin Ida Rumia Manurung Ida Zulfida, Ida Indri Dithisari Irawan, Shahril Irena Astria Ginting Irmayani Irmayani Irwansyah Banurea Janter Bronson Samosir Kamil, Idham Kepler Dopler Purba kholizah, Siti Khor Soo Cheen, Khor Laila Nazirah Lubis , Zulkifli Lubis, Rahmat Lubis, Riadini Wanty Madiyuanto, Madiyuanto Masnur Masnur Maswan, Putra Maurin Lis Evan Panggabean Mohd Hasmadi Ismail Mohd Hasmadi Ismail Muhammad Fadhil Muhammad Fuad Abdullah Muhammad Rusdi Muklis Muklis murina, sasha Nicho Chandra Siregar Nyak, Erwin Oding affandi Othman, Zulkifli Pardamean Abadi Pepah, Christine Peter Aning Tedong Pindi Patana Pulungan, M Anhar Rahbiah, Sitti Rahmayani Rahmayani Rahmi , Aulia Razak, Abd. Riansa, Ikhsan Ridwanti Batubara Ridwanti Batubara Ridwanti Batubara Rini Susanti Riswan Riswan Riswan Riswan Riswan Riswan Ritonga, Efri Debby Ekinola Rizky Amalia Rolyn SDH Sinaga Rosmidah , Hasibuan Ruslizar, Ruslizar Sai'in, Ali Sampara, Nirwana Samsuri Samsuri Sawal R Pulungan Sebayang Rihat Seca Gandaseca Seca Gandaseca Siahaan, Nelson Manumpak Sihotang, Krisda Fadila Silalahi, Jovian Zefanya Richard Chrisardo Simbolon, Rohani Sintike Frastika Sintike Frastika Siregar, Rezki Indah Siti Kholizah Solihin Solihin Suherman Sultan Rexy Adji, Sultan Rexy Adji Surya Dharma Syauki, Azri Syawal Harahap, Fitra Sylvia F Panjaitan Syukriy Abdullah T Sabrina T. Sabrina T., Sabrina Takahiro Fujiwara Tanjung, Dede Syahputra Tarigan, Simon Ternala A. Barus Vhintara, Cut Widya Natasha Napitupulu Wulan, Nawang Yenni Asbur Young F Limbeng Yunus Afifuddin Yusrani Dwi Paulina Malau Zumaira, Tasya Zuriani Ritonga