Master Degree: S2 FPIK Institut Pertanian Bogor (IPB)
Bachelor Degree: S1 FMIPA Universitas Indonesia (UI)
RESEARCH INTERESTS
Marine Tourism, Coastal Zone Management, Marine Conservation,GIS, Remote Sensing
37
Scopus Publications
446
Scholar Citations
12
Scholar h-index
15
Scholar i10-index
Scopus Publications
Spatial modelling of mangrove AGC stock using vegetation indices and LULC changes in coastal area of Teluknaga and Kosambi, Indonesia Ramzan Pradana Maulsyid, Willdan Aprizal Arifin, Yulius, Taslim Arifin, Anang Dwi Purwanto, et al. Anthropocene Coasts, 2026 Mangrove ecosystem along the coast of Indonesia has experienced degradation and loss of carbon stocks due to extensive coastal development and land conversion. This study aims to develop a spatial model for estimating Above-Ground Carbon (AGC) stocks in the mangrove forests of Teluknaga and Kosambi in 2019, 2022, and 2025. Using Sentinel-2 satellite imagery, Land Use and Land Cover (LULC) was classified using the Random Forest (RF) algorithm, resulting in five main classes including water bodies, mangrove, vegetation, bareland, and built-up area. Vegetation indices (NDVI, EVI, SAVI, and ARVI) were specifically calculated for mangrove areas to construct a linear regression model against the reference AGB values obtained from secondary data. Results indicate that ARVI is the best predictor (R 2 = 0.80; RMSE = 40.98). The maximum AGC value recorded was 177.47 MgC ha −1 in 2019, decreasing to 153.36 MgC ha −1 in 2022 and plummeting to 111.62 MgC ha −1 in 2025. This decline is also reflected in the total carbon stock in the study area, which fell from 987,973.4 MgC to 595,583.8 MgC. This is related to the reduction in mangrove area from 368.45 ha in 2019 to 261.16 ha in 2025. Spatially, the conversion of mangrove to bareland and built-up area reached a total of 122.72 ha, with a predominance of conversion to bareland (78.66 ha) and to built-up area (44.06 ha). This study presents novelty through the utilisation of LULC changes as a spatial approach in estimating carbon reserves and provides a scientific basis for the protection of mangrove ecosystems amidst coastal development pressures.
The spatio-temporal analysis of land use changes & above-ground carbon stock in Sumbawa mangrove ecosystem, Indonesia Jaka Putra Rahmajati, Vina Nurul Husna, Yulius Yulius, Taslim Arifin, Hadiwijaya L. Salim, et al. Anthropocene Coasts, 2026 Mangrove deforestation in Indonesia amounts to roughly 18,209 ha per year (18.26 MtCO₂e/year −1 ). However, spatial and temporal integrative research in eastern Indonesia's coastal areas remains limited. This study aims to analyse mangrove forests' condition and spatio-temporal changes, compute above-ground carbon (AGC) as a basis for sustainable coastal management in Sumbawa Regency and support the 2030 Nationally Determined Contribution (NDC) target. This research merges UAV-RGB data (July 2024) and multitemporal PlanetScope imagery (2016 and 2024) to develop a Canopy Height Model (CHM) and calculate the AGC. Land use classification was accomplished using Object-Based Image Analysis (OBIA)—Random Forest (RF), while changing trends were assessed using Modules for Land Use Change Evaluation/Simulations (MOLUSCE). AGC at the study site was in the range of 21—168 $${\\text{MgC}.\\text{ha}}^{-1}$$ MgC . ha - 1 (mean = 72.3 $${\\text{MgC}.\\text{ha}}^{-1}$$ MgC . ha - 1 , total = 8,999.9 $$\\text{MgC}$$ MgC . The investigation found a change of 37.89 ha of mangrove area to barren and shrubland, resulting in an AGC loss of 2,739.5 $$\\text{MgC}$$ MgC . However, there has been an increase in land use and changes in aquaculture and agriculture. This study proposes a novel approach by merging UAV data and time-series satellite images to increase the accuracy of AGC prediction in data-sparse locations. A nature-based Solution (NbS) is advocated as an integrated method for adaptive mangrove restoration and conservation, while still supporting the demands of the local community. This research presents a geographical framework that may be duplicated to create inclusive and adaptable coastal resource management plans and directly contribute to reaching the 2030 NDC targets.
MAPPING OF CORAL REEF HABITATS USING SPOT-7 AND SENTINEL-2 SATELLITE IMAGERY IN LIANG AND RAKIT ISLANDS, SALEH BAY, INDONESIA Syamsul B. Agus, A. S. Maulana, Taslim Arifin, . Yulius, Aprizon Putra, et al. Geography Environment Sustainability, 2026 Coral reef ecosystems are vital for marine biodiversity, coastal protection, and local livelihoods, yet environmental and anthropogenic stressors increasingly threaten them. Accurate and timely mapping of these habitats is essential for effective management and conservation planning. This study aims to evaluate and compare the spatial distribution and extent of coral reef habitats around Liang and Rakit Islands, as well as to assess the classification accuracy of Sentinel-2 Level-2A and the SPOT-7 satellite imagery for the years 2016 and 2021. Both datasets were pre-processed through atmospheric and sun-glint corrections, with SPOT-7 imagery further enhanced by water column correction using the Lyzenga algorithm. Supervised classification in ENVI was used to map four shallow-water habitat classes (coral reef, seagrass, sand, and rubble), and classification accuracy was assessed using confusion matrices to compute Producer Accuracy (PA), User Accuracy (UA), and Overall Accuracy (OA). Across both islands, coral reef and seagrass each occupied roughly one quarter of the mapped shallow-water area, while sand and rubble together accounted for about half of the area, indicating a heterogeneous mosaic of fringing reefs and seagrass meadows interspersed with sandy and rubbly substrates. Maps derived from SPOT-7 imagery produced higher overall accuracies (84% for Liang and 82% for Rakit) than those derived from Sentinel-2A imagery (76% and 70%, respectively). SPOT-7-based classifications consistently delineated larger and more detailed extents of coral reef and seagrass habitats, demonstrating the value of higher-resolution imagery for representing fine-scale features in optically complex coastal environments, whereas Sentinel-2A imagery was more suitable for broad-scale habitat discrimination but tended to underestimate narrow or fragmented patches.
DETERMINATION OF MARINE ECOTOURISM ZONES ON PISANG ISLAND – PESISIR BARAT, INDONESIA USING MARXAN ZONING Asykorini SHABRINA, Yulius YULIUS, Syamsul B. AGUS, Taslim ARIFIN, Aprizon PUTRA, et al. Geojournal of Tourism and Geosites, 2026 Pisang Island on Pesisir Barat has great potential to be developed as a marine ecotourism destination, particularly due to its coral reef ecosystem, seagrass beds, and beautiful, picturesque beaches. However, when developing this tourism, it is important to consider the balance between ecosystem protection and the economic needs of coastal communities, so that the ecosystem remains sustainable. This study aims to determine sustainable marine ecotourism zones using Marxan. We integrated ecological variables— bathymetry, brightness, current velocity, coral reefs and seagrass cover beds—with social layers: jetties, boat sailing lanes, traditional fishing areas, and surfing spots. The integrated ecological data includes bathymetric maps from BATNAS, water brightness indices from Sentinel-2A image processing, surface current velocities from Copernicus Marine Service, and maps of coral reefs and seagrass bed distribution from Allen Coral Atlas. Socio-economic data was obtained by identifying jetties locations, boat sailing lanes, traditional fishing areas, and established tourist sites around Pisang Island. Three habitat protection targets (30%, 40%, 50%) were tested through Marxan Zoning on hexagonal planning units. The model results are displayed using the summedsolution frequency approach to see how often a unit is selected. After that, the zones are divided into four categories: core zone, buffer zone, marine ecotourism zone, and other zone. The results of the study indicate that Scenario A, with a protection target of 30%, is the most optimal choice, with an allocation of 120,670 ha (5.30%) for the ecotourism zone and 26,199 ha (1.15%) for the core zone. Scenario A is the most balanced approach in supporting marine ecosystem conservation and coastal community empowerment through tourism activities. This approach is considered the most balanced as it preserves marine ecosystems while providing space for tourism that supports local community economic benefits. These findings highlight the important role of Marxan as a data-driven spatial planning tool to support sustainable marine ecotourism management policies in Pisang Island.
Mapping and analyzing mangrove canopy density in East Belitung using Pleiades satellite imagery and hemispherical photography SB Agus, M Pasaribu, HL Salim, T Arifin, MA Kusumaningtyas, ST Hartati, ... The Egyptian Journal of Remote Sensing and Space Sciences 29 (2), 357-368 , 2026 2026
Mapping of Coral Reef Habitats Using Spot-7 And Sentinel-2 Satellite Imagery in Liang and Rakit Islands, Saleh Bay, Indonesia SB Agus, AS Maulana, T Arifin, A Putra, M Ramdhan, A Heriati, ... GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 19 (1), 6-16 , 2026 2026
Integrated Land–Sea Spatial Planning for Disaster Risk Reduction in Tanah Laut Regency, South Kalimantan, Indonesia KP Setiawan, K Kasman, A Putra, B Budimawan, T Arifin, Yulius, ... Integrated Environmental Assessment and Management, vjag035 , 2026 2026
The spatio-temporal analysis of land use changes & above-ground carbon stock in Sumbawa mangrove ecosystem, Indonesia JP Rahmajati, VN Husna, Y Yulius, T Arifin, HL Salim, R Rahmania, ... Anthropocene Coasts 9 (1), 13 , 2026 2026 Citations: 1
Spatial modelling of mangrove AGC stock using vegetation indices and LULC changes in coastal area of Teluknaga and Kosambi, Indonesia RP Maulsyid, WA Arifin, Yulius, T Arifin, AD Purwanto, A Putra, ... Anthropocene Coasts 9 (1), 6 , 2026 2026
Determination of marine ecotourism zones on Pisang Island–Pesisir Barat, Indonesia using Marxan Zoning A Shabrina, Y Yulius, SB Agus, T Arifin, A Putra, R Rahmania, ... Geojournal of Tourism and Geosites 64 (1), 86-97 , 2026 2026 Citations: 2
Spatio-Temporal Variation of Sea Surface Temperature, Chlorophyll-A, and Wind Direction on Euthynnus Affinis Fishing Productivity in Fisheries Management Area 712 NI Nufus, Y Yulius, SB Agus, T Arifin, A Putra, HL Salim, R Rahmania, ... Egyptian Journal of Aquatic Biology and Fisheries 30 (1), 63-81 , 2026 2026
Spatial transformation and toponomastic dynamics in Indonesia’s Nusantara capital: an anthropolinguistic inquiry into culture, history, and geographic characteristics EW Istiqomah, W Sumadio, M Ramdhan, Y Yulius, A Putra, HL Salim, ... GeoJournal 91 (1), 3 , 2025 2025 Citations: 3
CULTURAL LANDSCAPE AND ACCULTURATION IN SEPAKU, INDONESIA: THE ROLE OF GEOGRAPHY IN THE CONTEXT OF NEW CAPITAL CITY DEVELOPMENT M NAB’HAN, T YULIUS, D NANI, A PUTRA, HL SALIM, IRA DILLENIA, ... Journal of Sustainability Science and Management 20 (12), 2683-2699 , 2025 2025
Habitat assessment of Whale sharks (Rhincodon typus) in Saleh Bay, indonesia: linking chlorophyll-a and sea surface temperature using aqua modis data TP Herdianti, ASB Yulius, T Arifin, A Putra, J Prihantono, A Heriati, ... Geographia Technica 20 (2), 52-64 , 2025 2025 Citations: 4
Olipier cultural site vulnerability analysis in East Belitung, Indonesia: Cultural resources vulnerability (CRV) methods AT Persada, SB Agus, HL Salim, I Dillenia, T Arifin, A Heriati, J Prihantono, ... The Egyptian Journal of Remote Sensing and Space Sciences 28 (2), 167-184 , 2025 2025 Citations: 2
Olipier cultural site vulnerability analysis in East Belitung, Indonesia: Cultural resources vulnerability (CRV) methods A Tri Persada, SB Agus, HL Salim, I Dillenia, T Arifin, A Heriati, ... The Egyptian Journal of Remote Sensing and Space Sciences 28 (2), 167-184 , 2025 2025 Citations: 1
GIS and AHP-Based Flood Zoning and Conservation Strategies in The Tarusan Watershed, Indonesia E Barlian, I Umar, I Dewata, T Triyatno, A Putra, E Mustikasari, ... Geographia Technica 20 (2), 114-133 , 2025 2025 Citations: 3
Hydrodynamic modeling of pollutant distributions from the Bera watershed and its impact to the coastal area of Saleh Bay, West Nusa Tenggara, Indonesia AM Rahman, D Purbani, SB Agus, T Arifin, Y Yulius, A Putra, A Heriati, ... Geogr Tech 31, 51 , 2025 2025 Citations: 3
INTEGRATION OF WATER QUALITY ASSESSMENT AND WASTE MANAGEMENT SYSTEMS: A STRATEGIC APPROACH TOWARDS A SUSTAINABLE GREEN CAMPUS IN THE UI GREENMETRIC FRAMEWORK. I Dewata, E Barlian, N Syah, I Umar, E Yuniarti, A Putra, M Ramdhan, ... Geographia Technica 20 (1) , 2025 2025
INFLUENCE OF SEA SURFACE TEMPERATURE AND CHLOROPHYLL-A ON MACKEREL PRODUCTIVITY IN BANTEN BAY, INDONESIA: ANALYSIS USING AQUA MODIS DATA (2014-2023). D Putri, Y Yulius, AA Rosalia, T Arifin, A Putra, A Heriati, J Prihantono, ... Geographia Technica 20 (1) , 2025 2025 Citations: 7
Advancing mangrove carbon stock monitoring with drone and Pleiades imagery on Gilibakau Island–Saleh Bay, Indonesia RY Azzahra, AS Yulius, F Aditama, T Arifin, A Putra, A Heriati, D Purbani, ... Journal of Marine and Island Cultures 14 (1), 88-101 , 2025 2025 Citations: 1
ANTI-BREAST CANCER BIOACTIVE COMPOUNDS AND IN-SILICO MOLECULAR PREDICTION OF Crassostrea angulata (Lamarck, 1819). PH Kusumawati, NP Zamani, D Soedharma, T Arifin, AS Samusamu, ... Indonesian Fisheries Processing Journal/Jurnal Pengolahan Hasil Perikanan … , 2025 2025 Citations: 2
Mariculture site selection based on water quality, cultivation and ecological condition T Arifin, Y Yulius, M Ramdhan, O Johan, DP Gunawan, A Heriati, ... Global Journal of Environmental Science and Management 11 (1), 1-18 , 2025 2025 Citations: 6
Stakeholder Perceptions of the Impact of Artificial Reef Deployment: A Case Study of the Indonesian Coral Reef Garden (ICRG) in Nusa Dua, Bali Y Yulius, C Tito, M Ramdhan, D Purbani, T Arifin, NAR Setyawidati, ... Media Konservasi 29 (4), 550-550 , 2024 2024
MOST CITED SCHOLAR PUBLICATIONS
Kajian Kualitas Air Untuk Wisata Bahari Di Pesisir Kecamatan Moyo Hilir Dan Kecamatan Lape, Kabupaten Sumbawa N Saraswati, Yulius, R A, S HL, A Heriati, M E Jurnal Segara 13 (1), 37-47 , 2017 2017 Citations: 45
Forecasting land-use changes due to coastal city development on the peri-urban area in Makassar City, Indonesia T Arifin, SN Amri, R Rahmania, M Ramdhan, H Chandra, L Adrianto, ... The Egyptian Journal of Remote Sensing and Space Science 26 (1), 197-206 , 2023 2023 Citations: 26
Kajian Kualitas Perairan untuk Budi Daya Laut Ikan Kerapu di Teluk Saleh, Kabupaten Dompu Yulius, Aisyah, J Prihantono, D Gunawan Jurnal Segara 14 (1), 57-68 , 2018 2018 Citations: 23
Kondisi arus pasang surut di perairan pesisir kota Makassar, Sulawesi Selatan T Arifin, Yulius, MFA Ismail Depik 1 (3) , 2012 2012 Citations: 20
Analisis penentuan sebaran konsentrasi Klorofil-A dan produktivitas primer di perairan Teluk Saleh menggunakan citra satelit Landsat OLI 8 E Kusumawati, SB Susilo, SB Agus, A Taslim, Y Yulius Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural … , 2019 2019 Citations: 17
Pengelolaan budidaya rumput laut berbasis daya dukung lingkungan perairan di pesisir Kabupaten Dompu, Provinsi Busa Tenggara Barat Yulius, J Prihantono, M Ramdhan Seminar Nasional Geomatika , 2017 2017 Citations: 17
Pengembangan Industri Perikanan Tangkap Di Perairan Barat Sumatera Berbasis Ekonomi Biru (Industrial Development in Fisheries at West Sumatera Padang Waters Based on Blue Economy) D Purbani, AA Damai, Yulius, E Mustikasari, HL Salim, A Heriati Journal of People and Environment 23 (2), 233-240 , 2016 2016 Citations: 17
PENGEMBANGAN INDUSTRI PERIKANAN TANGKAP DI PERAIRAN BARAT SUMATERA BERBASIS EKONOMI BIRU (Industrial Development in Fisheries at West Sumatera Padang Waters Based on Blue Economy) D Purbani, AA Damai, Yulius, E Mustikasari, HL Salim, A Heriati Jurnal Manusia dan Lingkungan 23 (2), 233-240 , 2016 2016 Citations: 17
Assessment of underground water quality in Karimunjawa Island, Central Java–Indonesia J Prihantono, Y Yulius, S Husrin, M Ramdhan, WA Gemilang Jurnal Segara 17 (1), 23-32 , 2021 2021 Citations: 14
Budi daya Rumput Laut dan Pengelolaannya di Pesisir Kabupaten Dompu, Provinsi Nusa Tenggara Barat Berdasarkan Analisa Kesesuaian Lahan dan Daya Dukung Lingkungan Yulius, M Ramdhan, J Prihantono, DG Pryambodo, D Saepuloh, HL Salim, ... Jurnal Segara 15 (1), 19-30 , 2019 2019 Citations: 14
Pengelolaan sumberdaya kelautan dan perikanan berbasis wilayah pengelolaan perikanan (WPP) dengan memanfaatan WebGIS R Suhelmi, I, Yulius, D Purbani Depik 2 (2) , 2013 2013 Citations: 14
CORAL REEF SPATIAL DISTRIBUTION IN WANGI-WANGI ISLAND WATERS, WAKATOBI Yulius, N Novianti, T Arifin, HL Salim, M Ramdhan, D Purbani Jurnal Ilmu dan Teknologi Kelautan Tropis 7 (1) , 2015 2015 Citations: 13
Assessment of water quality status, nutrients, and phytoplankton communities in the coastal zone of East Aceh Regency, Indonesia DWH Tjahjo, NN Wiadnyana, SE Purnamaningtyas, T Arifin, D Purbani, ... Journal of Ecological Engineering 24 (9) , 2023 2023 Citations: 12
Mapping seasonal marine debris patterns and potential hotspots in Banten Bay, Indonesia R Rahmania, A Setiawan, A Tussadiah, PD Kusumaningrum, Yulius, ... IOP Conference Series: Earth and Environmental Science 763 (1), 012056 , 2021 2021 Citations: 12
Analisis sistem informasi geografis (SIG) untuk potensi wisata pantai di Kota Makasar, Provinsi Sulawesi Selatan Yulius, T Arifin Tataloka 16 (3), 145-152 , 2014 2014 Citations: 12
Kesesuaian Kawasan Budidaya Rumput Laut Di Teluk Saleh, Kabupaten Sumbawa, Nusa Tenggara Barat Yulius, Ardiansyah, M Ramdhan, A Heriati, HL Salim, D Purbani, SN Amri, ... Jurnal Segara 12 (1), 11-19 , 2016 2016 Citations: 11
Fishing ground mapping based on Chlorophyll-a distribution using aqua Modis satellite imagery in the fisheries management area (FMA) 712 Y Yulius, V Aidina, M Ramdhan, A Daulat E3S Web of Conferences 324, 01007 , 2021 2021 Citations: 9
Abrasi dan Akresi Berdasarkan Longshore Sediment Transport dan Perubahan Garis Pantai: Studi Kasus Pantai Pulau Cemara Besar, Karimunjawa Yulius, NKK Putra, M Ramdhan, B Rochaddi Jurnal Segara 16 (3), 197-208 , 2020 2020 Citations: 8
Evaluating the effectiveness of mangroves rehabilitation efforts by comparing the beta diversity of rehabilitated and natural mangroves R Rahmania, TL Kepel, T Arifin, Yulius IOP Conference Series: Earth and Environmental Science 404 (1), 012070 , 2020 2020 Citations: 8
IDENTIFIKASI PULAU BERDASARKAN KAIDAH TOPONIMI DI KEPULAUAN TOGEAN PROVINSI SULAWESI TENGAH Yulius, Triyono MAJALAH ILMIAH GLOBE 13 (1) , 2011 2011 Citations: 8
