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All Journal Jurnal Ilmu Tanah dan Lingkungan (Journal of Soil Science and Environment) Indonesian Journal of Geography Jurnal Pembangunan Wilayah dan Kota Jurnal Hortikultura JTSL (Jurnal Tanah dan Sumberdaya Lahan) Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Tataloka JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) JURNAL ILMIAH GEOMATIKA MAJALAH ILMIAH GLOBE Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Geografi, Edukasi dan Lingkungan JEPA (Jurnal Ekonomi Pertanian dan Agribisnis) Journal of Regional and Rural Development Planning Komputasi: Jurnal Ilmiah Ilmu Komputer dan Matematika Region : Jurnal Pembangunan Wilayah dan Perencanaan Partisipatif Geodika: Jurnal Kajian Ilmu dan Pendidikan Geografi Indonesian Journal of Electrical Engineering and Computer Science Makara Journal of Technology Eduvest - Journal of Universal Studies
Boedi Tjahjono
Departemen Ilmu Tanah Dan Sumberdaya Lahan, Fakultas Pertanian, Institut Pertanian Bogor, Kampus IPB Dramaga Bogor 16680 Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Materials Science & Nanotechnology Mathematics Mechanical Engineering Neuroscience Physics Social Sciences

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IDENTIFICATION OF AGE CLASS AND VARIETIES OF RICE PLANT USING SPECTRORADIOMETRY AND CHLOROPHYLL CONTENT INDEX: (Identifikasi Kelas Umur dan Varietas Tanaman Padi Menggunakan Spektroradiometri dan Indeks Kandungan Klorofil) Munibah, Khursatul; Trisasongko, Bambang Hendro; Barus, Baba; Tjahjono, Boedi; Achmad, Alfredian; Uciningsih, Winda; Sigit, Gunardi; Hongo, Chiharu
Majalah Ilmiah Globe Vol. 24 No. 1 (2022): GLOBE VOL 24 NO 1 TAHUN 2022
Publisher : Badan Informasi Geospasial

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rice is the staple food for Indonesian society because more than 90% population eat rice every day. Estimation of the rice production can be monitored from the plant growth phase by utilizing remote sensing data. Spectroradiometry can be used to validate the remote sensing spectral because it has a wide wavelength range. Research objectives are to identify transplanting age class and varieties of rice plant based on spectroradiometry and its vegetation index, to analyze the relationship between spectroradiometry and chlorophyll content index (CCI). The results show that the transplanting date of 14 days, 21-32 days, and 56-68 days in three varieties (Inpari32; Padjadjaran Agritan; Siliwangi Agritan) are difficult to be distinguished at visible wavelength but it easy at infrared wavelength. The plant age class for the Siliwangi Agritan can be distinguished well on NDVI, SAVI, EVI while the Pajajaran Agritan is only on NDVI and EVI. All vegetation indexes, where the plant age of 14 days and 21-32 days for the Inpari32 are difficult to be distinguished between them, but easy to be distinguished with 56-68 days. This is due to the high sensitivity of chlorophyll to infrared wavelengths and the characteristics of rice plants itself (many tillers and plant height). Meanwhile, rice plants of every veriety are difficult to be distinguished, either on visible wavelength, infrared wavelength or on all vegetation indexes. Spectroradiometry has a high correlation with chlorophyll content index (CCI) (R2=0,88). This shows that the higher chlorophyll content in rice plants, the higher spectroradiometry for infrared wavelength.
Analisis Bahaya Longsor Berdasarkan Sistem Informasi Geografis di Kabupaten Sumedang Rakhmad Fadillah; Boedi Tjahjono; Fifi Gus Dwiyanti
Jurnal Penelitian Pendidikan IPA Vol 10 No SpecialIssue (2024): Science Education, Ecotourism, Health Science
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10iSpecialIssue.8354

Abstract

Sumedang Regency has a hilly landscape, making it one of the 13 cities/regencies in West Java Province that are prone to landslides. A total of 80 landslide incidents were recorded from 2019 to 2023. These landslides resulted in 45 fatalities, 53 injuries, and damage to 317 infrastructure units. This situation indicates the importance of conducting an analysis of landslide hazard distribution. The landslide hazard distribution analysis is carried out using a weighting and scoring method on the parameters used, which include: slope gradient, rainfall, actual land cover, landform, lithology, and soil type. Based on these parameters, four landslide hazard classes were identified in Sumedang Regency: low, medium, high, and very high hazard classes. Proportions of these hazard are as follows: high hazard class (42.24%), medium hazard class (40.38%), low hazard class (13.90%), and very high hazard class (3.49%). The low hazard class is mainly found in the northern part of Sumedang Regency, the medium hazard class is widespread in sloping areas, and the high to very high hazard classes are primarily found in the Tampomas mountains and areas with hilly landforms. Slope gradient and rainfall are the factors that most influence landslide hazards, making it necessary to design appropriate mitigation.
The modeling of earthquake disaster mitigation in Bulukumba Regency: A stakeholder approach Ahmad, Despry Nur Annisa; Tarigan, Suria Darma; Tjahjono, Boedi; Sitanggang, Imas Sukaesih; Sakti, Harry Hardian
Journal of Degraded and Mining Lands Management Vol. 12 No. 4 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.124.8247

Abstract

Bulukumba Regency, located along the Walanae Fault and within a seismic gap zone, indicates the potential for future earthquake recurrence. However, the regional and community capacity to address earthquake hazards remains weak, as evidenced by the lack of regulations accommodating earthquake studies in Bulukumba. This study aimed to design an earthquake mitigation model based on a stakeholder approach in Bulukumba Regency. The methodology employed MACTOR (Matrix of Alternatives for Choice and Trade-Offs), utilizing survey and questionnaire data. The output is a framework for policymakers in earthquake mitigation activities. The results suggested two effective alternative models: (i) a stakeholder formulation model based on role capacity and (ii) a time segmentation model for stakeholder involvement in earthquake mitigation. Based on these two models, it is essential to establish strong coordination and collaboration among these actors in order to minimize the impact of disasters on both the community and the environment.
Co-Authors A Kasno A.A. Ketut Agung Cahyawan W Abdjad Asih Nawangsih Achmad, Alfredian Alamin Yang First Alfin Murtadho Amalia Ratnasari Andrea Emma Pravitasari, Andrea Emma Annajmi, Nabila ANTONIUS KASNO Arief Hartono Asdar Iswati Atang Sutandi Aufa H. A. Syafril, Aufa H. A. Baba Barus Bambang Hendro Trisasongko Bambang Hendro Trisasongko Bambang Hero Saharjo Budi Marwoto Chiharu Hongo, Chiharu D.P. Tejo baskoro Darmawan Dede Nurrahman Hakim Despry Nur Annisa Ahmad, Despry Nur Annisa Diah Listyarini Dinik Indrihastuti Dinik Indrihastuti Dwi Putro Tedjo Baskoro Dwi Putro Tejo Baskoro Dwi Shanty Apriliani Gunadi Dyah R Panuju Dyah R. Panuju Dyah R. Panuju Edwin Hidayat, Edwin Ema Suhaema Enni Dwi Wahjunie Ernan Rustiadi Euis Sunarti Febria Heidina, Febria Fifi Gus Dwiyanti Giofandi, Eggy Arya H.A. Syafril, H.A. Hanudin Hanudin Hari Wijayanto Haris, Fikri Dwi Hermanto Siregar I Nengah Surati Jaya Ikqra Ikqra Ilham iwan Tona Imas Sukaesih Sitanggang Indah Firdiana Irzaman, Irzaman Iskandar Lubis Khursatul Munibah Komarsa Gandasasmita Kukuh Murtilaksono Kukuh Murtilaksono Kukuh Murtilaksono Lailan Syaufina Lia Meyana LILIK BUDIPRASETYO Luluk Dwi Wulan Handayani M. Galih Permadi Mahir Rachman, Latief Mahmud A. Raimadoya Mahmud A. Raimadoya Mazlan Muhaimin Muhaimin Muhamad Rizal Gojali Muhammad Fitrah Irawan Muhammad Pramulya Muya Avicienna Nabila Annajmi NINA WIDIANA DAROJATI Nuniek Sutanti Nurwajedi Nurwajedi Panuju, Dyah R. Rakhmad Fadillah Rival Rahman, Rival Rusdi Mahardi Sakti, Harry Hardian SANTUN R.P SITORUS Santun R.P Sitorus Saputra, Roby Sigit, Gunardi Siti Faizah Zauhairah Sobri Effendy Sri Harini Sri Mulatsih Sumardani Kusmajaya Supriyati Supriyati Supriyati Supriyati Suria Darma Tarigan Susanti, Dwi Rahayu Syaiful Anwar Taufik Z. Karim Turmudi Uciningsih, Winda Untung Sudadi Wicaksono Tri Wuryanto Widiatmaka Wistha Nowar Zulham Husein