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All Journal Indonesian Journal of Geography Jurnal Ilmu Pertanian Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Economic Journal of Emerging Markets Jurnal Ilmu Lingkungan Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Majalah Geografi Indonesia JURNAL PENELITIAN SAINTIKA Journal of Degraded and Mining Lands Management Proceeding International Conference on Global Resource Conservation Journal of Engineering and Technological Sciences agriTECH Forum Geografi Jurnal Tataloka Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) MAJALAH ILMIAH GLOBE SAINS TANAH - Journal of Soil Science and Agroclimatology Jurnal Geografi, Edukasi dan Lingkungan Civil and Environmental Science Journal (CIVENSE) Jurnal Mineral, Energi dan Lingkungan Jurnal Penelitian Pengelolaan Daerah Aliran Sungai International Journal of Remote Sensing and Earth Sciences (IJReSES) jurnal Ilmu Pertanian (Agricultural Science) JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Budimas : Jurnal Pengabdian Masyarakat Jurnal Mineral, Energi dan Lingkungan Journal of Applied Geology JURNAL HUTAN TROPIS BIROKRASI PANCASILA Jurnal Ilmu Kehutanan Jurnal Manusia dan Lingkungan Prosiding Seminar Hasil Penelitian dan Pengabdian Kepada Masyarakat Geosfera Indonesia The International Journal of Remote Sensing and Earth Sciences (IJReSES)
Junun Sartohadi
Department Of Soil Science, Faculty Of Agriculture, Universitas Gadjah Mada
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Mechanical Engineering Social Sciences Other

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Sediment Flow Characteristics in The Upper Slope of Volcanic Landscapes With Dryland Agriculture La Ode Hadini; Junun Sartohadi; M. Anggri Setiawan; Djati Mardiatno; Nugroho Christanto
Geosfera Indonesia Vol. 6 No. 3 (2021): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v6i3.24480

Abstract

Increasing population densities and food demands are major factors contributing to the widespread use of agricultural drylands in upper volcanic slope areas. This phenomenon poses a high risk of severe erosional events that are environmentally hazardous. Therefore, this study aims to analyze the sediment flow characteristics, based on the relationship between sediment flow and water level as well as the sediment discharge rate and soil loss. Field surveys were conducted to determine the soil measurement, slope morphology and dryland cover characteristics. The sediment flow was evaluated at the gully outlet, where 169 suspension data pairs for the modeling and 130 suspension data pairs for the validation, as well as the bed load, water level, rainfall and water flow characteristics were obtained. Tables and figures were subsequently used to represent the measurement data and analysis results for the correlation between the flow rate effects, sediment and soil loss on the water surface. The results showed that the sediment flow in volcanic landscape slopes with dryland agriculture were possibly characterized by the polynomial relationship, using the suspension discharge model, Qs=0.0322Q2+6.0625Q–1.2658. Under this condition, the average rate of soil loss in the form of sediment load and erosion rate of the catchment area occurred at 953.53 and ​​1,657.94 ton/ha/yr, respectively. Furthermore, the sediment sources in the soil loss were believed to originate from 83% of the suspended sediments and 17% bed loads. Keywords: Discharge; Dryland; Landscape; Sediment; Volcano Copyright (c) 2021 Geosfera Indonesia and Department of Geography Education, University of Jember This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License
Analysis of the Dynamics of Water Flow and Suspension Flow Discharge in Volcano Watershed with Settlement Land Use La Ode Hadini; Junun Sartohadi; Muhammad Anggri Setiawan; Djati Mardiatno; Nugroho Crhristanto
Geosfera Indonesia Vol. 8 No. 1 (2023): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v8i1.30921

Abstract

Suspension flow into the upstream of volcano watershed is sensitive to land use. In Indonesia, a settlement is a form of land use in several volcanic landscapes. There is currently no detailed study on the suspension flow sediment from the settlement land use. The purpose of this study is to investigate the characteristics of the relationship between water and suspension flow discharge. The study was conducted through the measurements at a gully outlet that produced 747 suspension load data. For each rainfall event, suspension load measurements were made in the field, followed by laboratory analysis. Additionally, field surveys were used to determine the characteristics of settlement land use and the water flow into the gully system. According to the findings, the peak flow discharge corresponds to the peak suspension discharge, the peak flow discharge comes before the peak suspension discharge, and the peak flow discharge happens after the peak suspension discharge. The average time lag between initial rainfall events and suspension flow was 10.36 minutes, and the suspension peak content varied by an average of 2.22 gl-1. The grain size was also dominated by the clay fraction, averaging 67.86% on the ascending branch and 67.82% on the descending branch.
Landslide susceptibility analysis on road sections in Kaligesing District, Indonesia, using Frequency Ratio (FR) approaches Pertiwi, Rianita; Sartohadi, Junun; Setiawan, M. Anggri; Maulana, Edwin
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.2025.124.7913

Abstract

Road construction with intensive slope cutting increases landslide susceptibility along the road section, especially in hilly areas such as Kaligesing, Indonesia. This study aimed to compile a landslide susceptibility map along the road section in Kaligesing and evaluate the level of susceptibility based on the main causal factors. GIS approach and quantitative statistical analysis Frequency Ratio (FR) were used in the susceptibility model. Eighty-two landslide points were randomly divided into training (70%) and testing (30%) datasets. Twelve causal factors were used in the analysis: slope direction, elevation, lithology, slope gradient, curvature, hemeroby degree, Topographic Wetness Index (TWI), distance from the river, distance from the road, rainfall, soil texture, and soil aggregate. Model validation used the Area Under Curve (AUC) value to evaluate model performance. The findings showed that the model is accurate, with an AUC value of 0.75 for the training set and 0.71 for the testing set. Furthermore, the level of landslide susceptibility is divided into four classes, namely very high (73 km), high (70.77 km), moderate (0.07 km), and very low (0.03 km). Thus, the findings can be used to support decision-making and planning for more adaptive road infrastructure development in landslide-prone areas.
Potential of UAV-Generated Orthophotos in Assessing Environmental Vulnerability to Landslides in Ngasinan Village, Purworejo Regency, Central Java Astuti, Yeni; Sartohadi, Junun; Samodra, Guruh
Indonesian Journal of Geography Vol 57, No 2 (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.83487

Abstract

Ngasinan Village in Bener District, Purworejo Regency, has mountainous and sloping topography, which increases the risk of landslides. However, there is currently no available information regarding the village's environmental vulnerability to landslides, which is essential for disaster mitigation planning. This study aims to assess the environmental vulnerability to landslides in Ngasinan Village using orthophotos as an alternative to a census. The primary data used in this research include aerial photographs taken by an unmanned aerial vehicle (UAV) and Ground Control Points (GCPs) to ensure the accuracy of the orthophotos. The vulnerability parameters analyzed include socio-economic and physical environmental aspects. Aerial photo interpretation was used to identify building structures, the type of predominant walls, building age, building area, electricity usage, and distance from proper roads. The Digital Terrain Model (DTM) was used to extract parameters such as topographic clusters, topographic elevation, distance to steep slopes, and distance to very steep slopes. Environmental vulnerability analysis was conducted using interview data and questionnaires from research samples. The results show that Ngasinan Village falls into the medium vulnerability class. Orthophotos proved to be an accurate data source for assessing environmental vulnerability to landslides, with an accuracy rate of 86.66%. Furthermore, information on the vulnerability of houses to landslides can be obtained more easily and quickly through observation and interpretation of orthophotos compared to the census method. Received: 2023-03-29 Revised: 2023-07-31 Accepted: 2025-06-05  Published: 2025-06-16
Improving Landslide Susceptibility Using Groundwater Parameter in Samigaluh and Kalibawang Subdistricts Susatio, Raja; Sartohadi, Junun; Samodra, Guruh; Setiawan, Muhammad Anggri; Wilopo, Wahyu
Journal of Applied Geology Vol 10, No 1 (2025)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jag.106054

Abstract

Landslide susceptibility map is crucial in disaster risk management and it can be used for regional development plans. Landslide susceptibility map can be made by analyzing parameters that are assumed to affect landslides such as gradient slopes, geology, soil, and climate. Selection of landslide controlling parameters influences the accuracy of landslide susceptibility map. This study evaluates the effect of parameter that’s rarely used which is groundwater. The study area of this research was Kalibawang and Samigaluh Subdistricts, Kulonprogo, Special Region of Yogyakarta, Indonesia. Frequency ratio was used for the method along other parameters which is slope gradient, lithology, lineament density, land use, soil thickness. The result shows that groundwater parameter increase the accuracy by 22,29%. This study suggest that groundwater should be highly considered in landslide susceptibility mapping. In the other hand, groundwater depth mapping remains a challenge because most remote sensing method only detect shallow groundwater. Further research is necessary to develop better method for groundwater mapping using remote sensing or other indirect method.
Inovasi Reaktor Pirolisis Produksi Biochar Berbahan Baku Organic Waste Slurry Dari Sampah Perkotaan Terpilah Dengan Kontrol Tekanan Tris Sugiarto; Sartohadi, Junun; Pulungan, Nur Ainun Harlin Jennie; Ngadisih, Ngadisih; Praharto, YB; Hidayati, Nurul
Sehati Abdimas Vol 7 No 1 (2024): Prosiding Sehati Abdimas 2024
Publisher : PPPM POLTESA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47767/sehati_abdimas.v7i1.902

Abstract

The application of this technology aims to develop a pyrolysis reactor for Organic Waste Slurry, designed to convert urban organic waste into high-quality biochar, with a self-sufficient pressure control system for energy efficiency. The methodology employed in this study includes performance testing of the pyrolysis reactor equipped with automatic temperature control and a system to utilize pyrolysis gas as an internal fuel source. Organic waste was processed at pyrolysis temperatures ranging from 400–500°C to produce biochar with a high fixed carbon content. Testing was conducted on several soil samples with added biochar to assess its impact on water retention and nutrient availability. The results of the study indicate that the biochar produced from the Organic Waste Slurry reactor has a fixed carbon content of around 65–70%, along with optimal physical and chemical stability for use as a soil amendment. This biochar increased the cation exchange capacity (CEC) of the soil by up to 30% and improved soil water content by 15% compared to controls without biochar. Quantitatively, the reactor successfully reduced the volume of organic waste by 50% and generated biochar that enhanced soil fertility, positively impacting urban agricultural productivity. The mechanisms and processes in the Organic Waste Slurry pyrolysis reactor were found to be effective as a solution for urban organic waste management, reducing carbon emissions, and improving soil quality sustainably. This technology shows a positive trend in energy efficiency and applications for environmental agriculture and food security.
GROUNDWATER LEVEL ESTIMATION MODEL ON PEATLANDS USING SAR SENTINEL-1 DATA IN PART OF RIAU, INDONESIA Ardila Yananto; Junun Sartohadi; Hero Marhaento; Awaluddin
International Journal of Remote Sensing and Earth Sciences Vol. 18 No. 2 (2021)
Publisher : BRIN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.ijreses.2021.v18.a3618

Abstract

The character of peatlands has the ability to store large amounts of water, but the surface of the peatlands dries quickly and easy to burn during the dry season. Research aims to build a model to estimate groundwater level of peatland. Statistical analysis of Karl Pearson Product Moment correlation test was used to determine the relationship between the back scatter values and the Surface Soil Moisture (SSM) values from the Sentinel-1 SAR data processing with the groundwater level values measured using the Sipalaga instrument. Regression analysis was used to determine the model that could be used to estimate the groundwater level of peatlands in the study area based on the results of Sentinel-1 SAR data processing. The results showed that the Sentinel-1 SAR data with the Sigma_0 format in decibel (db) units with VV polarization had the highest correlation value with the groundwater level data of peatlands measured using the Sipalaga instrument, with a value of r -0.648 (moderate correlation). Model to estimate water level of peatlands was Y = -101.629 + (-7.414 x), where 'Y' was the groundwater level of peatlands in the study area and 'x' was the Sentinel-1 SAR data with Sigma_0 format in decibel (db) units with VV polarization. The spatial and temporal patterns of peatlands groundwater level in the study area from Sentinel-1 SAR data showed peatlands that to survive at a water level <40 cm was in the area around of the Rokan River and also in plantation areas, especially Acacia plantations, where canals were made to irrigate and land management.
Co-Authors . Awaluddin, . Adhera Sukmawijaya Adhitama, Adib Prima Aditya Saputra Afid Nurkholis Ahmad Priyo Sambodo Ahmad Syukron Prasaja Ajun Prayitno Akbar, Aji Ali Amir Noviyanto Anastasia Neni Candra Purnamasari Andi Sungkowo Andi Syahputra Andri Kurniawan Anggri Setiawan Anggri Setiawan Ardila Yananto Awaluddin Azwar Maas Christanto, Nugroho Christanto, Nugroho Christopher Gomez Christopher Gomez Christopher Gomez, Christopher D Daryono Danang Sri Hadmoko Danang Sri Hadmoko Danang Sri Hadmoko Danang Sri Hadmoko Daryono, D Dema Azmir Hatta Didik Indradewa Didik Indradewa Djarot Sadharto Djarot Sadharto, Djarot Djati Mardiatno Djati Mardiatno Djati Mardiatno Dyah R. Hizbaron Dyah Rahmawati Hizbaron Edhi Martono Edhi Martono Ekha Yogafanny Erika Galih Ayu Priyawati Ernitha Panjaitan Erny Wibawanti Estuning Tyas Wulan Mei Fathia Lutfiananda Ferad Puturuhu Franck Lavigne Franck Lavigne, Franck Hairil Adzulyatno Hadini Harlin Jennie Pulungan, Nur Ainun Hartanti Hartanti Hero Marhaento Hero Marhaento, Hero Hizbaron, Dyah R. Hizbaron, Dyah R. Ihsan, Haikal Muhammad Jetten, Victor G Junita Saragih Junita Saragih, Junita Khairisa, Noor Husna Kuswaji Dwi Priyono Lies Rahayu M Pramono Hadi, M Pramono M. Anggri Setiawan Makruf Nurudin Maola Maqdan Maria E. I. Shrestha Marshanda Sasmita Putri Masruroh, Heni Maulana, Edwin Meiarti, Rini Mohammad Kholid Ridwan Mohammad Pramono Hadi Mr. Suwarno, Mr. Mudrajat Kuncoro Muhammad Anggri Setiawan Muhammad Anggri Setiawan Muhammad Anggri Setiawan Muhammad Anggri Setyawan Nehren, Udo Ngadisih Ngadisih Ngadisih Ngadisih Nisaa', Ratri Ma'rifatun Nugroho Crhristanto Nurul Hidayati Nurwihastuti, Dwi Wahyuni Pertiwi, Rianita Praharto, YB Pramasti Dyah Nhindyasari Projo Danoedoro Pulungan, Nur Ainun Harlin Jennie Punuf, Defritus Aldrin Puspita Indra Wardhani R. Rijanta Ratri Ma&#039;rifatun Nisaa&#039; Retnadi Heru Jatmiko Rimawan Pradiptyo Rina Purwaningsih Rina Purwaningsih, Rina Rini Meiarti Rosalina Kumalawati S Sudibyakto S Sunarto Saidah Istiqomah Samodra Wibawa Samodra Wibawa Samodra, Guruh Santika Purwitaningsih Seftiawan Samsu Rijal Seftiawan Samsu Rijal Setiawan, Anggri Setiawan, M Anggri Setiawan, M. Anggri Setiawan, M.Anggri Setiawan, Muhammad Anggri Setiawan, Muhammad Anggri Seto, Toshikazu Setyawan, Muhammad Anggri Shrestha, Dhruba Phika Shrestha, Druba Phika Shrestha, Maria E. I. Su Ritohardoyo Sudibyakto, S Sunarto Sunarto Sunarto Sunarto Sunarto Sunarto Sunarto, S Surya Sabda Nugraha Suryanto Susatio, Raja Suwarno Suwarno Syarifah Aini Dalimunthe Syarifah Aini Dalimunthe, Syarifah Aini Tjut Sugandawaty Djohan Toshikazu Seto Trida Ridho Fariz Tris Sugiarto Tris Sugiarto Victor Jetten, Victor Wahyu Wardhana Wahyu Wilopo Wahyudi Wahyudi Waode Asryanti Wida Yeni Astuti, Yeni Yoga Darmajati