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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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Ancaman Konversi Lahan Sawah Terhadap Kecukupan Beras di Kabupaten Musi Rawas Alamin Yang First; Baba Barus; Boedi Tjahjono
Journal of Regional and Rural Development Planning (Jurnal Perencanaan Pembangunan Wilayah dan Perdesaan) Vol. 7 No. 1 (2023): Journal of Regional and Rural Development Planning (Jurnal Perencanaan Pembangu
Publisher : P4W LPPM IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jp2wd.2023.7.1.42-57

Abstract

Rice production in 2019 decreased by 2.63 million tons or 7.75 percent compared to 2018, exacerbated by the increasingly massive conversion of agricultural land. One of the areas threatened by land conversion is Musi Rawas Regency in South Sumatra Province. This study aims to analyze changes in land use in 2000, 2010, 2020 and paddy fields for rice sufficiency in Musi Rawas Regency. The method used is Cellular Automata-Markov (CA-Markov), analysis of the surplus-deficit food balance, and paddy fields overlaying the spatial plan. Based on the results of the analysis, there was a change in land use in Musi Rawas Regency between 2000 to 2020, an increase in the area of plantation land by 128,867.74 ha. This increase is largely the result of conversion of paddy fields. The results of the calculation of the predicted demand for rice in 2030 show that in total there will be a rice deficit of -16,511 tons. It is predicted that there will be a rice deficit due to the decrease in the area of paddy fields which is affected by changes in land use from paddy fields to non-paddy fields. The suitability of existing paddy fields with the 2010 to 2030 RTRW shows an area of 7,598.73 ha of actual paddy fields in 2020 is suitable, 3,057.27 ha is not suitable. The incompatibility of paddy fields in 2020 with the RTRW can be input into the revision of the RTRW that will be carried out by the Musi Rawas Regency government, especially on the spatial pattern of paddy fields.
ANALISIS MORFOMETRI UNTUK MENENTUKAN RISIKO ALIRAN LAHAR GUNUNG GEDE DI KABUPATEN CIANJUR PROVINSI JAWA BARAT Supriyati Supriyati; Boedi Tjahjono
Jurnal Geografi, Edukasi dan Lingkungan (JGEL) Vol. 2 No. 2 (2018): Edisi Bulan Juli
Publisher : Pendidikan Geografi Universitas Muhammadiyah Prof. Dr. Hamka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29405/jgel.v2i2.1517

Abstract

Aset penting di sekitar Gunung Gede dan perkembangan pemukiman hingga jarak 6 km dari puncak gunung, memberikan risiko yang tinggi akan dampak bahaya aliran lahar. Pengurangan risiko dampak bencana erupsi Gunung Gede, perlu dilakukan mitigasi bencana dengan mengetahui daerah mana saja yang akan dilalui aliran lahar. Pembuatan peta bahaya aliran lahar Gunung Gede dibagi menjadi dua kawasan, yaitu daerah proksimal serta daerah medial dan distal yang jauh dari pusat letusan. Metode penilaian bahaya proksimal menggunakan variabel curah hujan, kerapatan aliran sungai (drained density), dan gradien lembah. Penilaian bahaya di daerah medial dan distal, menggunakan variabel morfometri sungai-sungai utama yang mempunyai hulu di DAS-DAS proksimal seperti daya tampung atau kapasitas maksimal lembah yang dihitung melalui volume lembah sungai. Hasil analisis menunjukkan bahwa aliran lahar medial dan distal Gunung Gede di Kecamatan Cugenang dan Kecamatan Cianjur mempunyai risiko sedang-tinggi. Rekomendasi yang dapat diberikan untuk mengurangi risiko aliran lahar melalui mitigasi non-struktural dengan penetapan peraturan, kesadaran masyarakat dan program pendidikan serta modifikasi perilaku. Rekomendasi mitigasi struktural dapat dilakukan dengan cara membangun tanggul sungai pada daerah yang berpotensi mengalami banjir lahar atau membuat sabo dam, serta meningkatkan kapasitas daya tampung lahar. Kata Kunci: Morfometri, Aliran Lahar, Risiko
IDENTIFIKASI KARAKTERISTIK POLA SPASIAL HULU HILIR PADI ORGANIK DI KABUPATEN SERDANG BEDAGAI Annajmi, Nabila; Tjahjono, Boedi; Anwar, Syaiful
Jurnal Tanah dan Sumberdaya Lahan Vol. 11 No. 1 (2024)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2024.011.1.2

Abstract

Organic agriculture must be applied in an integrated manner, from upstream to downstream, forming a system. This subsystem is part of the market-oriented agribusiness concept by paying attention to quantity, quality, and continuity to gain income and agricultural productivity profits. This study aimed to look at the development of organic rice farming in the Serdang Bedagai Regency from a regional (spatial), agribusiness, and economic point of view. ANN analysis involves distance variables between agribusiness subsystems, road infrastructure, and transportation. The results of the analysis showed that the spatial pattern of organic rice formed in the Serdang Bedagai Regency was distributed, especially in Lubuk Bayas Village and Tanah Merah Village, with each having a value of R = 2.81 (R> 1) and R = 6.15 (R>1). Pematang Setrak Village had a clustered spatial pattern or had a value of R = 0.12 (R<1). This shows that the closer the locations between the subsystems are, the more profitable it is, thus saving production and transportation costs. The gains obtained were strengthened by the results of the R/C ratio produced, namely Tanah Merah Village with a value of 1.36, Lubuk Bayas Village with a value of 1.39, and Pematang Setrak Village with a value of 1.48. This means that farming activities are pretty efficient.
Degraded Peatlands and Their Utilization Opportunities in Kepulauan Meranti Regency, Riau Province, Indonesia Turmudi, Turmudi; Saharjo, Bambang Hero; Prasetyo, Lilik Budi; Tjahjono, Boedi
Indonesian Journal of Geography Vol 55, No 3 (2023): 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.84986

Abstract

Degraded peatlands are caused by various factors, including land fires, water mismanagement, and mining activities. Indicators of degraded peatlands can be identified through the type of land cover observed in the field, which commonly includes shrubs and barren land (open areas of ex-mining land). Therefore, this study aimed to determine the dynamics of the existence of degraded land and its utilization opportunities using spatial, image, and time series analysis methodDepartment Forest Resources Conservation & Ecotourism, Forestry Faculty, Bogor Agricultural University Kampus IPB Darmaga PO.Box 168 Bogor-Indonesias. To conduct the analysis, various data sources were employed, including Landsat imagery, the Regional Spatial Planning (RTRW) map, hotspots data, rainfall data, landforms maps, peatlands data, and soil information. The results of the study showed that between 1999 and 2019, the average area of degraded peatlands amounted to 198,084.54 hectares. Furthermore, the optimal area of degraded peatlands utilized for agriculture amounted to 7,122.45 hectares . Inventory of degraded peatland using the land cover approach can be obtained faster, cheaper, easier than the terrestrial method. Opportunities for using degraded land for agricultural purposes were also identified through the selection of plant species that exhibited adaptability to peatlands and held economic value. These selected plants, including sago, rubber, areca nut, and liberika coffee, were developed within the Meranti Islands Regency. 
Analisis Kemandirian Pangan Berbasis Perubahan Penggunaan Lahan di Kota Metro, Provinsi Lampung Saputra, Roby; Tjahjono, Boedi; Pravitasari, Andrea Emma
Jurnal Pembangunan Wilayah dan Kota Vol 18, No 4 (2022): JPWK Volume 18 No. 4 December 2022
Publisher : Universitas Diponegoro, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pwk.v18i4.38728

Abstract

Kota Metro merupakan wilayah di Provinsi Lampung yang memiliki luas sawah hampir separuh dari luas wilayahnya. Setidaknya 95 % lahan sawah tersebut merupakan lahan sawah beririgasi teknis. Perkembangan Kota Metro cukup pesat seiring dengan meningkatnya populasi penduduk dan aktivitas ekonomi. Kondisi ini mengakibatkan meningkatnya alih fungsi lahan, terutama sawah menjadi non sawah. Tujuan penelitian ini adalah menganalisis kemampuan Kota Metro dalam memenuhi produksi pangan secara mandiri berdasarkan dinamika perubahan penggunaan lahan yang terjadi. Perubahan penggunaan lahan diidentifikasi dengan cara overlay peta penggunaan lahan hasil interpretasi visual citra SPOT tahun 2007, 2013 dan 2019. Prediksi penggunaan lahan tahun 2031 menggunakan pendekatan modul Cellular Automata – Markov dengan menggunakan dua skenario, yaitu skenario business as usual dan skenario konservatif. Analisis kemandirian pangan dengan menghitung neraca produksi dan konsumsi beras berdasarkan luas sawah hasil prediksi. Hasil menunjukkan penggunaan lahan didominasi pada penggunaan lahan sebagai bangunan permukiman dan sawah dengan persentase keduanya mencapai 87 %, penggunaan lahan lainnya berupa bangunan non permukiman, kebun campuran, tegalan, semak belukar, RTH dan tubuh air. Pada tahun 2019 neraca pangan pokok masih berstatus surplus, namun tahun 2031 status neraca pangan pokok menjadi defisit, kondisi status neraca pangan surplus dapat dipertahankan dengan adanya intervensi pemerintah untuk mempertahankan lahan sawah eksisting.
Understanding the impact of land use change on urban flood susceptibility mapping assessment: A review Giofandi, Eggy Arya; Tjahjono, Boedi; Mahir Rachman, Latief
Journal of Degraded and Mining Lands Management Vol. 11 No. 3 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.113.6025

Abstract

Over the past few years, numerous urban areas have been identified in floodplains and coastal regions. These areas should be repurposed as water storage zones to enhance surface water infiltration. The escalating demand for land in flat areas adds complexity to the susceptibility of urban areas to flood hazards. The observation focuses on understanding how land use change influences urban flood susceptibility assessment. Several aspects assumed to have a significant relationship with the flood phenomenon include the impact of land use change, environmental health impact, modification of land typology, explanation of urban flooding, appropriate model for flood-prone assessment, current state of research, appropriate steps in decision-making in susceptibility areas, and challenges of the scenario-based flood-prone mapping model in the future. Additionally, the assessment aspect should consider the impact of land degradation resulting from land use change. Integrated measures are necessary to guide future studies aimed at improving ecological quality and restoring environmental health. The availability of free and open-source datasets facilitates conducting studies to support decision-making both locally and regionally.
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.
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.
Pemantauan Jasa Ekosistem untuk Tata Air DAS Cisangkuy Hulu dan Tengah Hidiya, Miesriany; Giofandi, Eggy Arya; Tunggadewi, Andini Tribuana; Ratnawati, Beata; Tjahjono, Boedi
Jurnal Ilmu Tanah dan Lingkungan Vol 27 No 2 (2025): Jurnal Ilmu Tanah dan Lingkungan
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitl.27.2.102-114

Abstract

Jasa ekosistem pengaturan air di Daerah Aliran Sungai (DAS) Cisangkuy bagian tengah dan hulu mempunyai peran penting untuk kehidupan manusia dan makhluk hidup lain di wilayah bawahnya. Hal ini terkait dengan kebutuhan air sehari-hari ataupun terkait dengan ancaman bencana, dikarenakan kerusakan ekosistem di wilayah atas dapat mendatangkan bencana banjir seperti yang selama ini terjadi di daerah penelitian. Penelitian ini bertujuan memantau jasa ekosistem pengatur air berdasarkan karakteristik biofisik wilayah. Pendekatan yang digunakan berbasis Multi Criteria Evaluation (MCE) terhadap tiga parameter utama yaitu Topographic Wetness Index (TWI), Normalized Difference Vegetation Index (NDVI), dan kemiringan lereng. Data utama yang digunakan adalah DEM SRTM 30m dan citra satelit Landsat 5 TM dan 8/9 OLI-TIRS periode 2000–2024. Hasil kajian menunjukkan bahwa nilai TWI daerah penelitian secara keluasan didominasi oleh kelas “tinggi” (40,72 %) dan “sangat tinggi” (36,79 %). Adapun untuk kelas lereng didominasi oleh kelas “agak curam” (23,09%) dan “curam” (23,07%). Sementara itu untuk kerapatan vegetasi (NDVI) terjadi perubahan luasan yang cukup dinamis. Kelas “sangat rapat” mengalami penambahan luas cukup signifikan dari 0,43 % (2000) menjadi 1,19 % (2004), dan meningkat tajam menjadi 45,26 % (2024). Sementara itu pada kelas “rapat” sempat naik dari 30,53 % (2000) menjadi 38,58 % (2004), namun mengalami penurunan menjadi 26,16 % (2024). Untuk kelas kerapatan “sedang” sempat naik dari 45,05 % (2000) menjadi 47,43 % (2004) namun turun menjadi 18,47% (2024). Dinamika perubahan luas ini berdampak pada nilai jasa ekosistem pengatur air dimana kelas “tinggi” sempat turun dari 37,95% (2000) menjadi 17,23 % (2004), namun meningkat kembali menjadi 37,76 % (2024). Temuan ini menegaskan bahwa telah terjadi perbaikan ekosistem DAS Cisangkuy bagian tengah dan hulu dalam kurun waktu 20 tahun (2004 ke 2024). Diharapkan kondisi ekosistem tetap terjaga atau membaik sehingga dapat menekan dampak banjir wilayah hilir di masa mendatang. 
Modeling Landslide Hazard Using Machine Learning: A Case Study of Bogor, Indonesia Tjahjono, Boedi; Firdiana, Indah; Trisasongko, Bambang Hendro
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 14 No 2 (2024): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.14.2.407

Abstract

Landslides occur in many parts of the world. Well-known drivers, such as geological activities, are often enhanced by violent precipitation in tropical regions, creating complex multi-hazard phenomena that complicate mitigation strategies. This research investigated the utility of spatial data, especially the digital elevation model of SRTM and Landsat 8 remotely sensed data, for the estimation of landslide distribution using a machine learning approach. Bogor Regency was chosen to demonstrate the approach considering its vast hilly/mountainous terrain and high rainfall. This study aimed to model landslide hazards in Sukajaya District using random forests and analyze the key variables contributing to the isolation of highly probable landslides. The initial model, using the default settings of random forest, demonstrated a notable accuracy of 93%, with an accuracy ranging from 91 to 94%. The three main predictors of landslides are rainfall, elevation, and slope inclination. Landslides were found to occur primarily in areas with high rainfall (2,668–3,228 mm),elevations of 500 to 1,500 m, and steep slopes (25–45%). Approximately 4,536 ha were potentially prone to landslides, while the remaining area (> 12,000 ha) appeared relatively sound.
Co-Authors A Kasno A.A. Ketut Agung Cahyawan W Abdjad Asih Nawangsih Achmad, Alfredian Alamin Yang First Alfin Murtadho Amalia Ratnasari Andini Tribuana Tunggadewi, Andini Tribuana Andrea Emma Pravitasari, Andrea Emma Annajmi, Nabila ANTONIUS KASNO Asdar Iswati Atang Sutandi Aufa H. A. Syafril, Aufa H. A. Baba Barus Bambang Hendro Trisasongko Bambang Hero Saharjo Beata Ratnawati Budi Marwoto Chiharu Hongo, Chiharu D.P. Tejo baskoro Darmawan 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 Fadillah, Rakhmad Febria Heidina, Febria Fifi Gus Dwiyanti Firdiana, Indah Giofandi, Eggy Arya H.A. Syafril, H.A. Hakim, Dede Nurrahman Hanudin Hanudin Hari Wijayanto Haris, Fikri Dwi Hermanto Siregar Hidiya, Miesriany I Nengah Surati Jaya Ikqra Ikqra Ilham iwan Tona Imas Sukaesih Sitanggang 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 Ardiansyah Muhammad Fitrah Irawan Muhammad Pramulya Muya Avicienna Nabila Annajmi NINA WIDIANA DAROJATI Nuniek Sutanti Nurwajedi Nurwajedi Oktaviani, Niken Dwia Panuju, Dyah R. 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 Turmudi Uciningsih, Winda Untung Sudadi Wicaksono Tri Wuryanto Widiatmaka Wistha Nowar Z. Karim, Taufik Zulham Husein