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Tunas Geografi
Published by Universitas Negeri Medan
ISSN : 2301606X     EISSN : 26229528     DOI : https://doi.org/10.24114/tgeo
Core Subject : Science, Education, Social,
Astronomy Earth & Planetary Sciences Education Environmental Science Other
The main focus of this journal is Geography Learning, Social and Human Geography, Regional Development, Geographic Information Systems, Remote Sensing, Disaster and Mitigation, Geology and Geomorphology, Oceanography and Coastal. This journal target is teachers, lecturers, graduates, and practitioners in the field of geography. As a scientific communication medium, this magazine serves to provide a publication tool for the development of concepts and theoretical studies, and actual issues relevant in the field of Geography. This journal is published twice a year in July and December and is circulated as a publication material for education in geography, geography, or other relevant fields.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 188 Documents
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Analysis Changes in Mangrove Forest Cover Using Multi-Sensor Image in North Luwu District South Sulawesi 2015-2020 Maulana Abdul Hakim; Darwin Parlaungan Lubis; Meilinda Suriani Harefa; Muhammad Ridha Syafii Damanik; Ayu Suciani
Tunas Geografi Vol 11, No 2 (2022): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v11i2.41349

Abstract

Mangrove forest is one of the essential components of natural ecosystems. Mangrove forests have various essential functions, such as holding land sediments, tsunamis, and ocean waves, storing large amounts of carbon, and providing various other benefits for coastal and land areas. However, the conversion of mangrove forests has reduced and degraded mangrove land. Therefore, monitoring and conserving land changes in mangrove forests must be carried out to determine the effects on land ecosystems and coastal areas. Remote sensing has the spatial ability to analyze changes in mangrove ecosystems in coastal regions temporally because it has the advantage of using satellite imagery data. This study compares the classification method using multiple image sensors to analyze land cover changes in mangrove forests in North Luwu Regency, South Sulawesi, in 2015-2020. The technique used in this research is the classification of Object-Based Image Analysis (OBIA) and the variety of Maximum Likelihood. The results of Sentinel-1 image analysis using Maximum Likelihood provide information on changes in mangrove land cover during 2015-2020 with an area of 449.17 (Ha), while the results of Landsat 8 analysis using (OBIA) provide information on changes in mangrove land cover 596 (Ha).Keywords: Optics, Radar, OBIA, Maximum Likelihood, Mangrove
Institutional Feasibility Analysis in the Development of Simarjarunjung Ecotourism Jawanri Maurisco Saragih; Agus Purwoko; Zulkufli Lubis
Tunas Geografi Vol 11, No 2 (2022): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v11i2.39228

Abstract

The tourism industry sector is one sector that contributes to economic income that can provide welfare to the community. One of the sectors of the tourism industry is ecotourism; ecological principles and the theory of sustainable development will provide benefits by taking into account the factors that influence it; good management is needed to maintain, continue development, and develop sustainable tourism. This study analyses the development and institutional feasibility of managing the Simarjarunjung ecotourism area. This research is a qualitative descriptive analysis research, in which data interpretation and analysis are carried out by collecting data through documentation techniques, interviews, and observations and combining relevant information that can answer ecotourism problems and drawing conclusions as answers to the problems studied. The results of the feasibility assessment for the potential development of the Simarjarunjung Ecotourism Area show that the category is feasible for development and has a feasibility level with an index value of 75.74%. The community plays a direct role in ecotourism management for the sustainable and sustainable development of Simarjarunjung ecotourism. The institutional form of ecotourism management consists of the Association of Farmers Groups (GAPOKTAN) and the Tourism Awareness Group (POKDARWIS). The Simarjarunjung ecotourism management is managed privately, and the Setya Tani Forest Farmers Group manages the Pinus Hills Forest Nature Tourism. The strategies used in developing Simarjarunjung ecotourism are planning, implementation and utilization. The norms used are internal norms that prioritize local communities and minimize outside participation in the development of Simarjarunjung ecotourism.Keywords: Tourism, Ecotourism, Feasibility, Institutional, Simarjarunjung 
The Potential of Tugu Juang Rantauprapat as a Historical Tourism Object in Labuhanbatu District T. Teviana
Tunas Geografi Vol 12, No 1 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i1.41460

Abstract

This study aims to determine the potential of the Juang Rantauprapat Monument as a Historical Tourism Object in Labuhanbatu Regency. In this study, the research method used by the author is a qualitative research method and interviews. Qualitative research seeks to understand situations in natural settings; the authors try not to manipulate the observed phenomena. The author uses data collection guidelines, namely interviews. The data collection method uses "snowball sampling" because, in this method, the number of informants is not predetermined, apart from the key informants, namely Labuhanbatu senior journalists and residents who live around the location. The results of this study found that Tugu Perjuangan 45 has the potential as a historical tourist spot, a unique place, rich in nature, easy to access, and processed by human hands as well as the historical value of the struggle of the Labuhanbatu people. Civil Government, under the leadership of M Djamaluddin Tambunan. Various factors of historical heritage influence the attractiveness of historical tourism, so it is necessary to identify all the elements to be studied. Local governments and communities around historical tourism areas are like links in a chain that support each other in developing and maintaining tourist attractions. In an era where all social media live every time.Keywords: Potential, Monument of Fighting, Historical Tourism Objects
Design of a Community-Based Waste Management System in Rengas Pulau, Medan Marelan District, Medan City Hendro David Patar Sibagariang; Fatimah Fatimah; Zulkifli B Lubis
Tunas Geografi Vol 12, No 1 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i1.41875

Abstract

The national target for reducing waste in the community is 30% by 2025. This research aims to describe the design of a community-based waste management system and formulate an overview of household waste management policies and strategies in the Rengas Pulau Subdistrict. Based on identifying the affecting factors in waste management, a situation analysis is carried out using a SWOT analysis to formulate 19 (nineteen) strategies to optimize community-based waste management. The design of community-based waste management in Rengas Pulau Subdistrict starts from sorting and processing at the household, collecting and processing at TPS 3R. It is estimated that from the 46.20 m3/day, the volume of waste generation that is targeted to be reduced in the community can be processed and managed by the community in households at 19.52 m3/day (70.41%), and the residue is 8.20 m3/day. Meanwhile, household waste processed and managed by KSM at TPS 3R is 13.01 m3 per day (70.40%), and residue is 5.47 m3 per day. Furthermore, the residual waste is transported to TPS and TPA. Communities play a role, from the source of destruction to processing it on a regional scale. The government plays a role by holding a comprehensive waste management outreach and education program and improving the performance of solid waste services. The private sector plays a role by providing support through physical assistance or as an off taker of waste processing products from the community.Keywords: Waste Management, Household Waste, Policy, Community, Government, Private
Analysis of Environmental Problem-Solving Ability of Students In Class XI Social Science at State Senior High School 17 West Jakarta Fellix Rimba; Ranny Rastati (Malaysia)
Tunas Geografi Vol 12, No 1 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i1.42473

Abstract

The environment is an important pillar for all life, including human life. However, today's environmental problems cannot be separated from human activities. It is necessary to have environmental problem-solving skills in students. This study aimed to analyze the environmental problem-solving ability of students in Class XI Social Science at State Senior High School 17 West Jakarta. The research method used is descriptive quantitative. This study used a sample of 27 students. The sampling technique used is simple random sampling. Research results showed that the ability to solve environmental problems for class XI Social Science at State Senior High School 17 West Jakarta was classified as high (71,22%). The results of the indicator research are as follows: defining the problem using test questions at 30,19% and questionnaire results at 31,02%, identifying problems using test questions at 25,19% and questionnaire results at 21,27%, formulating various alternative solutions using test questions at 23,52% and questionnaire results of 25,19% and determine the best solution using test questions of 21,10% and questionnaire results of 22,52%. The highest score is found on the indicator defining the problem, and the lowest score on determining the best solution. This finding implies that there is a tendency for students to understand, identify and formulate solutions to environmental problems.Keywords: Ability, Problem-Solving, Environmental, Senior High School
Zoning of Social Vulnerability for Tidal Flood Disaster in Medan Belawan District, Medan City Based on Remote Sensing and Geographic Information Systems Budi Rahmah Panjaitan; Lili Somantri; Eka Wulan Safriani; Arifin (United Kingdom)
Tunas Geografi Vol 12, No 1 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i1.46711

Abstract

This study aims to 1) identify the social vulnerability of tidal floods in Medan Belawan District and 2) produce a zoning map of social vulnerability to tidal floods in Medan Belawan District descriptive quantitative type research. The variable used refers to Regulation of the Head of BNPB No. 2 of 2012 with changes covering population density, sex ratio, ratio of persons with disabilities, land use, and existing tidal flooding. The social vulnerability variable is then classified using a scoring technique. Data collection techniques in this study were document studies of secondary data obtained from various agencies. The results showed that five urban villages (83%) in Medan Belawan District had high tidal flood social vulnerability, and only one urban town (17%) was classified as having moderate social vulnerability. The urban villages with high tidal flood social vulnerability are Bagan Deli urban village, Belawan Bahagia urban village, Belawan Bahari urban village, Belawan I urban village, and Belawan II urban village. Meanwhile, the urban village with a moderate level of social vulnerability to tidal floods is the Belawan Sicanang Village. Belawan I Village occupies the highest tidal flood social vulnerability class, and the lowest tidal flood social vulnerability class is populated by Belawan Sicanang urban village.Keywords: Social Vulnerability, Tidal Flood, Disaster 
Analysis of Microplastic Abundance in Lake Siombak, Medan Marelan, Medan Jaka Ramananda; Ternala Alexander Barus; Arif Nuryawan
Tunas Geografi Vol 12, No 1 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i1.39753

Abstract

Microplastics are one of the pollutants that threaten aquatic ecosystems and have become the focus of research in recent years by environmentalists worldwide. In addition to harmful base materials, microplastics have hydrophobic characteristics, so chemicals such as Persistent Organic Pollutants can stick to microplastics and cause chemical pollution in aquatics. Siombak Lake is located in the coastal area of Medan City, and it is predicted to be a microplastic distribution channel to the aquatics. This study aimed to analyze the abundance of microplastics in water, sediment, and fish in Siombak Lake. Sampling was conducted from November 2021 – January 2022 at Siombak Lake. Water samples to be analyzed were added with 90 g NaCl, then filtered and separated visually using a microscope. Microplastic in the sediment is separated by drying, volume reduction, density separation, filtration, and visual sorting. Fish samples were dissected, and then the digestive tract content of fish was diluted with 10 ml of saturated NaCl. The abundance of microplastics obtained in waters ranged from 93-519 particles/m3, and the Number of microplastics in sediment ranged from 521-1481 particles/kg dry sediment, while the abundance of microplastics in fish samples ranged from 0-6 particles/individual.Keywords: Microplastic, Abundance, Coastal, Pollutant, Siombak Lake 
The Management of Pusong Reservoir, Lhokseumawe City, Based on the Suspended Sediment Discharge Anggi Lanari Lubis; Zulkifli Nasution; Mukhlis Mukhlis
Tunas Geografi Vol 12, No 1 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i1.41860

Abstract

The city of Lhokseumawe often experiences flooding or stagnant rainwater. The Pusong Reservoir that was built could have been ineffective in overcoming the flooding problem due to siltation in the reservoir. Therefore, this study aims to review and recommend the management of the Pusong Reservoir based on suspended sediment discharge which is expected to overcome the silting problem of the reservoir. The sampling method was carried out by determining the stations for sampling based on the environmental baseline in determining the six reservation stations. Samples were analyzed for suspended sediment concentration, turbidity, and incoming sediment discharge. Analysis of suspended sediment concentrations ranged from 9.3 - 50.0 ppm, turbidity ranged from 2.17 - 14.42 NTU, and the incoming suspended sediment discharge was 0.00 - 6946.56 kg/day. Based on the analysis of suspended sediment discharge that enters the reservoir, it is necessary to control sediment transport to prevent siltation does not occur in the Pusong Reservoir. The management of the sediment transport control includes sediment traps, vegetative systems, and Spoil Bank Resulting from Sediment Dredging.Keywords:  Suspended Sediment, Management, Pusong Reservoir, Turbidity
Estimation of Carbon Stocks on Mangrove Forests at Pulau Kampai Using Destructive and Non-Destructive Methods Anton Syahputra Siregar; Zulkifli Nasution; Rahmawaty Rahmawaty
Tunas Geografi Vol 12, No 1 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i1.47945

Abstract

Mangrove forests are essential in maintaining the balance of coastal ecosystems and climate change mitigation. This study aimed to analyze carbon stocks in 2022 in natural mangrove forests at Pulau Kampai, Pangkalan Susu Sub District, Langkat District, North Sumatra Province, with an area of approximately 1,786.25 ha. Estimating carbon stocks in this study uses destructive and non-destructive methods using allometric equations from various aboveground and belowground studies. The sampling plots used a circle plot with a radius of 5.64 m. The sampling plot was determined by purposive sampling based on NDVI criteria (low, moderate, dense, high dense) with a sampling plot distance of 20 m from the edge of the coast or river. The destructive sample tree was taken from the dominant species which grew in the study area, namely Rhizophora apiculata, with a diameter of 7.1 cm with a total biomass yield of 91 kg consisting of aboveground biomass of 67.55 kg (74.23%) and belowground biomass was 23.45 kg (25.77 %). Meanwhile, the average C-organic content produced 56% aboveground and 56% belowground. The estimated carbon stocks using this study's conversion factor was 62.06 tons C/ha with a total carbon stock of 110,849.28 tons C. Meanwhile, the conversion factor using other studies was 48.20 tons C/ha with a complete carbon stock of 86,095.30 tons C.Keywords: Destructive, Non-destructive, Carbon Stocks, C-organic, and NDVI 
The Impact of El Nino on Rainfall Variability in Buleleng Regency (Case Study: Period 1995-2004) Made Dwipayana; I Gede Putu Eka Suryana; I Gede Yudi Wisnawa
Tunas Geografi Vol 12, No 1 (2023): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v12i1.46586

Abstract

The climate in Indonesia usually runs yearly; there are times when a decrease in rainfall results in drought, and at other times, the rainfall increases resulting in flooding. One of the causes of changes in precipitation in Indonesia, including in most parts of the world, is ENSO (El Nino-Southern Oscillation), often called El Nino. This study aimed to determine the relationship between ENSO index data (SST Nino 3.4 anomaly) and monthly rainfall data in Buleleng Regency. This study uses secondary data, namely monthly rainfall data at 16 rain posts in Buleleng Regency and ENSO Index data from BMKG Region III Denpasar. Data were collected through observation, document recording and analyzed using statistical correlation methods. Furthermore, the results are processed spatially, namely by the Isohyet method. The research results show that the impact of El Nino on rainfall in Buleleng varies spatially and depends on the intensity of El Nino. In June-July-August (JJA/dry season) and September-October-November (SON/transition season), the impact of El Nino on rainfall variability in Buleleng Regency is more significant than other months, strong El Nino causes a decrease in rainfall in the majority of the Buleleng region with the characteristic of Below Normal rain (30% decrease in precipitation from the average), El Nino of weak - moderate intensity causes a reduction in rainfall in a small part of the Buleleng area with the dominant rain characteristic of Below Normal.Keywords: El Nino, Precipitation Variability, and Correlation Index.

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