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All Journal Indonesian Journal of Geography Journal of Degraded and Mining Lands Management Jurnal Agroekoteknologi Journal of Regional and Rural Development Planning AGROLOGIA : Jurnal Ilmu Budidaya Tanaman JURNAL BUDIDAYA PERTANIAN Science Nature Jurnal Tunas Agraria International Journal of Multidisciplinary: Applied Business and Education Research MAKILA: Jurnal Penelitian Kehutanan GEOFORUM Jurnal Geografi dan Pendidikan Geografi Jurnal Pendidikan Geografi Unpatti JENDELA PENGETAHUAN Jurnal Pengabdian kepada Masyarakat Arumbai Jurnal Pengabdian kepada Masyarakat Arumbai AGROLOGIA: Jurnal Budidaya Tanaman
Osok, Rafael M
Fakultas Pertanian Universitas Pattimura Ambon
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Medicine & Pharmacology Physics Social Sciences Transportation Other

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Penggunaan Tanah di Kecamatan Teluk Ambon Baguala dan Kesesuaiannya Terhadap Rencana Tata Ruang Kota Ambon 2011 – 2031 Tehupeiory, Sjane Florence; Siahaya, Willem Anthony; osok, rafael
Tunas Agraria Vol. 8 No. 3 (2025): Tunas Agraria
Publisher : Diploma IV Pertanahan Sekolah Tinggi Pertanahan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31292/jta.v8i3.478

Abstract

This study aims to evaluate the suitability of land use and availability with the 2011–2031 Ambon City Spatial Plan (RTRW). The methods used include spatial analysis of land use based on 2025 drone imagery, field surveys, and overlays with the RTRW map. The analysis results show that the level of land use suitability varies significantly across regions. Waiheru and Negeri Halong villages showed high levels of suitability, at 68.63% and 54.25%, respectively, while Passo Village had the highest non-suitability at 8.36% due to development pressures, land conversion, and weak spatial planning controls. Latta Village even recorded very low suitability, only 3.39%. Non-suitability generally occurs in border areas, dense settlements, and green spaces converted for other uses. This study recommends the need to strengthen spatial monitoring institutions, update the RTRW to be more responsive to local dynamics, integrate accurate spatial data, and control development in areas with high pressure. These strategies are critical for preserving ecological balance and sustainable spatial use in the periphery of Ambon City.   Penelitian ini bertujuan untuk mengevaluasi kesesuaian penggunaan dan ketersediaan tanah terhadap Rencana Tata Ruang Wilayah (RTRW) Kota Ambon 2011–2031. Metode yang digunakan meliputi analisis spasial terhadap penggunaan tanah berdasarkan citra drone tahun 2025, survei lapangan, serta overlay dengan peta RTRW. Hasil analisis menunjukkan tingkat kesesuaian penggunaan tanah sangat bervariasi antar wilayah. Desa Waiheru dan Negeri Halong menunjukkan tingkat kesesuaian tinggi, masing-masing sebesar 68,63% dan 54,25%, sedangkan Desa Passo memiliki ketidaksesuaian tertinggi sebesar 8,36% akibat tekanan pembangunan, alih fungsi lahan, dan lemahnya pengendalian tata ruang. Desa Latta bahkan mencatat kesesuaian sangat rendah, hanya 3,39%. Ketidaksesuaian umumnya terjadi pada kawasan sempadan, permukiman padat, dan ruang hijau yang dikonversi untuk fungsi lain. Penelitian ini merekomendasikan perlunya penguatan kelembagaan pengawasan ruang, pembaruan RTRW yang lebih responsif terhadap dinamika lokal, integrasi data spasial yang akurat, serta pengendalian pembangunan di wilayah dengan tekanan tinggi. Strategi ini penting untuk menjaga keseimbangan ekologis dan keberlanjutan pemanfaatan ruang di kawasan pinggiran Kota Ambon.
Pelatihan Pemetaan Spasial Bencana Alam bagi Guru dan Siswa SMA di Wilayah Kepulauan Lasaiba, Mohammad Amin; Sihasale, Daniel Anthoni; Osok, Rafael Marthinus
Jurnal Pengabdian Arumbai Vol 3 No 2 (2025)
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/arumbai.vol3.iss2.pp159-169

Abstract

Spatial mapping training for teachers and students in island regions was conducted to strengthen schools’ capacity to understand environmental risks through geospatial technology utilization. This activity was motivated by limited data access and low spatial literacy in coastal schools vulnerable to disasters. It aimed to enhance teachers’ and students’ skills in identifying, mapping, and analyzing potential hazards around school environments. The participatory and collaborative approach involved training sessions, field practices, and digital mentoring using open-source software. The results showed significant improvements in spatial literacy, risk analysis ability, and school autonomy in developing local risk maps. The community-based spatial training model strengthened school disaster preparedness and fostered an inter-school collaborative network. This approach provides scientific contribution to applied disaster education. Its implication encourages local governments and educational institutions to replicate similar programs sustainably.
Pelatihan Pemetaan Spasial Bencana Alam bagi Guru dan Siswa SMA di Wilayah Kepulauan Lasaiba, Mohammad Amin; Sihasale, Daniel Anthoni; Osok, Rafael Marthinus
Jurnal Pengabdian Arumbai Vol 3 No 2 (2025)
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/arumbai.vol3.iss2.pp159-169

Abstract

Spatial mapping training for teachers and students in island regions was conducted to strengthen schools’ capacity to understand environmental risks through geospatial technology utilization. This activity was motivated by limited data access and low spatial literacy in coastal schools vulnerable to disasters. It aimed to enhance teachers’ and students’ skills in identifying, mapping, and analyzing potential hazards around school environments. The participatory and collaborative approach involved training sessions, field practices, and digital mentoring using open-source software. The results showed significant improvements in spatial literacy, risk analysis ability, and school autonomy in developing local risk maps. The community-based spatial training model strengthened school disaster preparedness and fostered an inter-school collaborative network. This approach provides scientific contribution to applied disaster education. Its implication encourages local governments and educational institutions to replicate similar programs sustainably.
Evaluasi Kesesuaian Lahan Berbasis SIG Untuk Tanaman Cengkih, Pisang, dan Ubi Kayu di DAS Wai Ela, Negeri Lima, Pulau Ambon Hatulely, Gresi; Haumahu, J P; Osok, Rafael M; Talakua, Silwanus
JURNAL BUDIDAYA PERTANIAN Vol 17 No 2 (2021): Jurnal Budidaya Pertanian
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jbdp/2021.17.2.128

Abstract

The characteristics and quality of land resources are important things that must be considered in the planning, utilization and management of land for agricultural purposes. The purposes of this research were to describe land characteristics and quality, and to determine the suitability class, subclass, and limiting factors for clove (Zysygium armoticum), banana (Musa sp), and cassava ( Manihot esculenta Crant.) crops in Wai Ela Watershed. The method used in this study was a survey with land units as a fieldwork map which resulted from overlying four components, namely slope class, lithology formation, soil, and land uses. Field data collection was conducted following the observation lanes at 15 selected sample areas representing 72 land units. Data analysis was carried out by using a geographic information system (GIS), involving: (1) SRTM image analysis to produce topography class, (2) maps overlay to produce land units, and (3) attribute data processing to produce land suitability class. The study results showed that the land suitability for clove consisted of the suitable class of S2 (21.91 ha) and S3 (327.89 ha), and not-suitable, N (1069.85ha), with limiting factors being flooding, soil depth, and slope steepness. Land suitability for bananas consisted of the suitable class of S3 (501.70 ha), and not-suitable, N (686.99 ha) with limiting factors being flooding, erosion, and slope steepness; whereas land suitability for cassava consisted of the suitable class of S3 (501.70 ha) and not-suitable, N (917.96 ha), with limiting factors being flooding, slope steepness, and erosion.
Analysis of Physical Characteristics and Soil Degradation Due to Erosion and Rehabilitation Recommendation Based on GIS in Protected Forest Area of Mount Sirimau Tupanno, Carla E; Talakua, Silwanus; Soplanit, Rudy; Osok, Rafael M
JURNAL BUDIDAYA PERTANIAN Vol 19 No 1 (2023): Jurnal Budidaya Pertanian
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jbdp.2023.19.1.58

Abstract

Forest areas are designated as protected forests if they function as a provider of clean water reserves, erosion control, city lungs or other functions. Disruption of forest land resources has an impact on changes in the physical properties of the soil and soil degradation due to erosion. Objectives of this study were: 1) to examine the relationship between soil physical properties, 2) to determine soil degradation due to erosion, 3) to examine the relationship between soil physical properties and the level of soil degradation due to erosion, 4) to determine recommendations for land rehabilitation. Research observations were made based on 15 sample areas representing 212 land units. All analyzes were carried out based on Geographic Information Systems (GIS). The physical properties of the soil studied included texture, structure, pore distribution, permeability, particle density and oven dry mass density; whereas soil degradation analysis was based on RUSLE: A=RKLSCP (Renard et al., 1997), and correction of the erosion model A=0.2547RKLSCP (Talakua S.M. and Osok, 2017. The rehabilitation recommendations analyzed were erosion tolerance, potential erosion and CP-maximum. Study results were: 1) The correlation between physical properties was significant (P-value = 0.000*-0.018*) with a positive correlation coefficient (0.163-0.999) and negative one (0.199-0.998); 2) The average erosion rate was: light 3.60 t/ha/year (1425.20 ha), moderate 32.03 t/ha/year (410.28 ha), heavy 108.95 t/ha/year (946 .2 ha), very heavy 426.83 t/ha/year (457.44 ha); 3) There was a significant correlation between the physical properties of the soil and the amount of erosion with a P-value = 0.000*–0.029* with a positive (0.152-0.161) and a negative (0.150-0.151) correlations; 4) Recommendation for rehabilitation are agroforestry patterns combined with tillage and planting of plants according to contour lines on slopes of 0–8%, planting grass in strips, planting low ground cover on high density plantation crops and maintaining secondary and primary forests.
Pengembangan Wisata Pantai Namasua di Negeri Naku Kecamatan Leitimur Selatan Kota Ambon Labery, Cornelia M; Osok, Rafael Marthinus; Riry, Robert Berthy
JENDELA PENGETAHUAN Vol 19 No 1 (2026): JENDELA PENGETAHUAN
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jp19iss1pp47-62

Abstract

Dalam konteks pembangunan pariwisata berkelanjutan di wilayah kepulauan, integrasi antara potensi ekologis dan partisipasi masyarakat lokal menjadi prasyarat utama terciptanya destinasi wisata yang berdaya saing. Kajian ini bertujuan menganalisis potensi, tantangan, dan merumuskan model konseptual pengembangan wisata Pantai Namasua berbasis pemberdayaan masyarakat di Negeri Naku, Kota Ambon. Penelitian ini menggunakan pendekatan deskriptif dengan teknik observasi, wawancara mendalam, dan dokumentasi yang melibatkan 30 responden dari unsur masyarakat, wisatawan, dan pemerintah negeri. Data dianalisis menggunakan skala Likert dan analisis SWOT untuk mengidentifikasi kekuatan, kelemahan, peluang, dan ancaman destinasi. Hasil penelitian menunjukkan bahwa Pantai Namasua memiliki potensi tinggi pada aspek keindahan lanskap dan kebersihan lingkungan, namun terkendala oleh minimnya fasilitas dasar, kelembagaan pengelola, serta promosi digital. Partisipasi masyarakat telah terbentuk, tetapi belum terstruktur dalam model tata kelola berbasis komunitas. Model konseptual yang dihasilkan menekankan sinergi pentahelix antara pemerintah, akademisi, dunia usaha dan komunitas
Land Degradation Assessment Model Using Field Assessment And RUSLE Methods In Wai Ruhu Watershed, Ambon Island, Mollucas Province Talakua, Silwanus Matheus; Osok, Rafael Marthinus
Indonesian Journal of Geography Vol 57, No 3 (2025): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.98955

Abstract

Land degradation due to erosion is a serious threat to land sustainability of small tropical islands in Maluku, Indonesia. The current research was carried out in the Wai Ruhu Watershed, Ambon Island, Maluku; it was a part of studies conducted in Maluku in order to develop a suitable land degradation assessment model based on local conditions. Soil loss as the indicator of land degradation were determined using Stocking’s field assessment and RUSLE methods. The study found that land degradation rates in the study area using field indicators ranged from the lowest soil loss 4.40–19.15t/ha/yr to the highest 202.84-675.62t/ha/yr, while the RUSLE method ranged from 0.11-16.92t/ha/yr to the highest 287.63-4207.41t/ha/yr. The developed land degradation model (LD) due to erosion LD = 0.1499xR1.000 xK0.0026xLS0.0933xC0.133xP1.000xBd0.700xAv-0.652 is statistically significant because their p-values equal 0.000 with high R2 of 82,5% at a confidence level of 95%. The second model was also produced with a correction factor of 0.2158, so LD = 0,2158xRxKxLSxCxP, where LD= land degradation (tons/ha/yr), R = rain erosivity value (ton.m/ha/cm-rain), K= soil erodibility index, LS= slope length and steepness factor index, C= plant or vegetation or land use factor index, P= soil conservation practices factor index, Bd= soil bulk weight factor (g/cm3), and Av= vegetation/plant or land use stage factor (years). These results promote the importance fact that the Stocking’s land degradation field assessment indicators could be considered as a suitable land degradation assessment model for the specific local condition of small islands in Maluku.Received: 2024-08-06 Revised: 2025-12-11 Accepted: 2025-12-31 Published: 2025-12-31 
Transformasi Indeks Vegetasi Untuk Analisis Penggunaan Lahan Di Kecamatan Leitimur Selatan Kota Ambon Daniel Hutajulu; Willem Anthon Siahaya; Rafael Marthinus Osok
AGROLOGIA: Jurnal Ilmu Budidaya Tanaman Vol 12 No 2 (2023): Agrologia : Jurnal Ilmu Budidaya Tanaman
Publisher : Fakultas Pertanian, Universitas Pattimura Ambon, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ajibt.v12i2.10717

Abstract

Proses pembangunan perkotaan mencakup tahapan perencanaan, penyusunan kebijakan, implementasi kebijakan dan evaluasi implementasi pembangunan, pada dasarnya dituangkan dalam perencanaan tata ruang yaitu suatu kebijakan publik yang terintegrasi dan berkelanjutan dalam pemanfaatan ruang kota. Ambon merupakan kota dengan dinamika pembangunan dan aktivitas perekonomian relatif tinggi sehingga memicu peningkatan jumlah penduduk dan meningkatnya kebutuhan lahan. Teknologi penginderaan jauh menghasilkan informasi muka bumi berupa data citra pada skala lokal dan global. GIS digunakan untuk menyimpan, menganalisis, dan memvisualisasikan data spasial. NDVI merupakan metode standar yang biasanya digunakan dalam membandingkan tingkat kehijauan vegetasi serta dapat memberikan informasi tentang perubahan dinamis dari vegetasi tertentu. Penelitian ini bertujuan untuk menganalisis penggunaan lahan di Kecamatan Leitimur Selatan Kota Ambon dengan menggunakan transformasi indeks vegetasi NDVI citra Landsat-8 OLI berbasis analisis SIG. Berdasarkan hasil analisis citra dan observasi lapangan diperoleh lima kelompok penggunaan lahan. Nilai uji akurasi 94 %, dan kappa accuracy 92,57%.
Karakteristik Tanah dan Status Kesuburan Lahan Ladang Berpindah di Kabupaten Maybrat Provinsi Papua Barat Daya Niko Kareth; Rafael M. Osok; A. Marthin Kalay; Abraham Talahaturuson
AGROLOGIA: Jurnal Ilmu Budidaya Tanaman Vol 14 No 1 (2025): Agrologia : Jurnal Ilmu Budidaya Tanaman
Publisher : Fakultas Pertanian, Universitas Pattimura Ambon, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/agrologia.v14i1.18675

Abstract

Sistem perladangan berpindah menunjukkan beberapa kesamaan, namun juga memiliki variasi tergantung pada kondisi biofisik wilayah dan budaya masyarakat, terutama dalam aspek sosial dan ekonomi yang memengaruhi pola penggunaan lahan. Penelitian ini bertujuan untuk mengkaji (1) karakteristik lahan ladang berpindah, (2) status kesuburan tanah, dan (3) arahan pemanfaatan lahan ladang berpindah untuk pengembangan tanaman pangan lokal di Kabupaten Maybrat. Penelitian dilakukan pada bulan Mei 2024 di lahan ladang berpindah Kampung Huberita, Distrik Ayamaru Timur. Variabel yang diamati meliputi karakteristik lahan (jenis tanah, geologi, topografi, penggunaan lahan, sistem tanam, jenis komoditas), sifat fisik tanah (kadar air, bobot isi, berat jenis partikel, porositas), sifat kimia tanah (pH, KTK, KB, C-organik, N-total, P₂O₅, K₂O, dan basa-basa seperti Ca, Mg, Na, K), Hasil menunjukkan bahwa praktik tebang-bakar memengaruhi sifat fisik, kimia, dan biologi tanah. Kadar air dan bobot isi tanah meningkat pada lahan berumur 3 minggu dan 3 bulan, namun permeabilitas tanah menurun akibat rendahnya kandungan bahan organik. pH tanah meningkat, sementara C-organik menurun pada umur 3 bulan. K dan P tersedia sangat tinggi, terutama di Ayamaru. KTK meningkat seiring naiknya kadar Ca dan Mg. Secara keseluruhan, kesuburan meningkat sementara waktu, tetapi mulai menurun setelah bulan ketiga karena berkurangnya bahan organik dan unsur hara.
Pemetaan Tutupan dan Penggunaan Lahan Perkotaan Beresolusi Tinggi Menggunakan Fotogrametri Berbasis Drone untuk Mendukung Evaluasi Pemanfaatan Ruang Ivan Frits; Willem A Siahaya; Rafael Marthinus Osok
MAKILA Vol 20 No 1 (2026): Makila: Jurnal Penelitian Kehutanan
Publisher : Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/makila.v20i1.25151

Abstract

Accurate and high-resolution land cover and land use (LCLU) data are essential for spatial utilization evaluation in urban areas. This study aimed to produce a detailed LCLU map of Masohi District using UAV-based photogrammetry and evaluate its geometric accuracy. UAV aerial photographs were processed through geometric correction and supervised classification using the Maximum Likelihood algorithm. Geometric accuracy was assessed using Independent Check Points (ICP), Root Mean Square Error (RMSE), and Circular Error 90% (CE90). The classification identified 44 LCLU classes, with settlements and yards as the dominant land uses. The resulting map achieved a CE90 value of 11.604 cm, meeting national photogrammetric mapping standards. Overlay analysis showed strong spatial agreement between the classified map and UAV imagery. These findings demonstrate that UAV photogrammetry can provide accurate and high-resolution spatial data to support spatial utilization evaluation and urban planning in data-limited regions.
Co-Authors A. Marthin Kalay A.M. Kalay Abraham Talahaturuson, Abraham Alfredo Manusama Asia A. Sahubawa Calvin T Tutuarima Daniel Hutajulu Daniel Torimtubun Dhanang Supriadi Dhanang Supriadi Elizabeth Kaya Ellisa J Gaspersz Ellisa J Gaspersz Ferad Puturuhu Ferad Puturuhu Ferdinand Salomo Leuwol Gina P. Batubara Hatulely, Gresi Haumahu, J P Hendrico F Hehakaya Hetti May Rini Pintu Batu Ivan Frits Johan Riry Labery, Cornelia M LaUo, Novanti Ledy Resicha Parera Luhukay , Marcus Mahulette, Angriany Maimuna La Habi Marasabessy, Syamsudin Marchel Maxy Rijoly Maria T P Melwair Mohammad Amin Lasaiba Niko Kareth Pieter J Kunu Pieter Jozef Kunu Reginawanti Hindersah Riry, Robert Berthy Risamasu, Robby G Roberth Berthy Riry Sandhy H Luhulima Sangadji , Abdul R Siahaya, Willem A. Siahaya, Willem Anthony Sihasale, Daniel Anthoni Silwanus M Talakua Silwanus M Talakua Silwanus M Talakua Silwanus M Talakua Silwanus M Talakua Silwanus M. Talakua Silwanus M. Talakua Silwanus Talakua Silwanus Talakua Siregar, Adelina Sisilia Wariunsora Slamet, Sonya Soplanit, Rudy Souhuwat, Jelika Olivia Talakua , Silwanus M Talakua, Cristina M Talakua, S.M Talakua, Silwanus Talakua, Silwanus Matheus Tehupeiory, Sjane Florence Tupanno, Carla E Willem A Siahaya Willem A Siahaya Willem Anthon Siahaya