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  Subjects -> GEOGRAPHY (Total: 493 journals)
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Indonesian Journal of Geography
Journal Prestige (SJR): 0.217
Citation Impact (citeScore): 1
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 0024-9521 - ISSN (Online) 2354-9114
Published by Universitas Gadjah Mada Homepage  [46 journals]
  • Effect of Transportation Infrastructure on Built-up Area Using Prediction
           of Land Use/Cover Change: Case Study of Yogyakarta International Airport,
           Indonesia

    • Authors: Irwansyah Sukri, Rika Harini, Sudrajat Sudrajat
      Abstract: The development of transportation infrastructure increases the pressure on natural resources, one of which is the increase in the built-up area. The changes do not only happen during the construction of transportation infrastructure but also after its completion. Therefore, this study aims to identify and simulate land use/cover changes in Kulon Progo Regency, Indonesia, to predict the effect of the construction of Yogyakarta International Airport (YIA). A quantitative descriptive method was used with the main data of multitemporal Landsat remote sensing images. Furthermore, the integration of Cellular Automata and Artificial Neural Networks (CA-ANN) was applied to simulate land use/cover change predictions (2035). The results of image classification using the supervised maximum likelihood classification showed an overall accuracy of 85.33% and 86.67% for 2011, and 2015 with 2019 using Landsat 7 and 8 images, respectively. Meanwhile, there was an increase in paddy fields of 1,210.1 ha (2.11%) and built-up area by 2,708.6 ha (4.72%) during 2011 – 2019. Conversely, shrubs and dryland agriculture decreased by 1,594.1 ha (2.78%) and 2,174.1 ha (3.79%). The simulation results indicate that the development of transportation infrastructure further triggers the increase in built-up area, especially around the YIA. Therefore, policymakers and development implementers should adopt and implement appropriate and effective planning for sustainable land use.
      PubDate: 2022-12-20
      DOI: 10.22146/ijg.68216
      Issue No: Vol. 54, No. 3 (2022)
       
  • Groundwater Chemistry Characterization in The South and Southeast Merapi
           Volcano, Indonesia

    • Authors: Heru Hendrayana, Agung Harijoko, Indra Agus Riyanto, Azmin Nuha, Ruslisan Ruslisan
      Abstract: Merapi Volcano, which differs from volcanoes in other climates due to its location on the Indonesian Maritime Continent influenced by ENSO, ICTZ, and Moonsons, plays an essential role as a source of groundwater for the surrounding population. Some problems associated with groundwater in Mount Merapi are high utilization compared to other volcanoes worldwide, changes in land use, pollution, and its lowering table. Therefore, this study aims to compare the hydrogeological characteristics and aquifer systems of the southern and southeastern parts of Merapi Volcano. The hydrogeological characteristics were obtained from geological mapping, surface and subsurface, as well as rock XRF tests. Meanwhile, the hydrogeochemical characterization was determined through chemical data using the Trilinear Piper, Kurlov, Fingerprint, Composition, and Harker Diagram methods. The results of the Trilinear Piper, Kurlov, Fingerprint, and Composition Diagram methods show that Mount Merapi has 3, 7, 4, and 2 types of patterns different from other volcanoes in the world. On the other hand, the Harker diagram has the same pattern of Mg-Ca and Mg-Na as several other volcanoes. In conclusion, the hydrostratigraphy in the southern part of the volcano, consists of aquifuge, aquiclude, and aquifer, while in the southeast, there are aquitards of volcanic sandstone and tuff.
      PubDate: 2022-12-28
      DOI: 10.22146/ijg.76433
      Issue No: Vol. 1, No. 1 (2022)
       
  • Spatial and Ecological Approach on Marble Mining Land in Tulungagung
           Regency-Indonesia: Is it Suitable as an Assessment of Disaster Mitigation
           Efforts'

    • Authors: Nur Isroatul Khusna, Sumarmi Sumarmi, Syamsul Bachri, I Komang Astina, Nevy Farista Aristin
      Abstract: Indonesia has a karst region abundant in high-quality marble mining products but is also prone to disasters. Over the years, this area has experienced numerous natural disasters, thereby leading to the need for a land suitability assessment. This is a descriptive qualitative and quantitative research with data collected from field observations, laboratory tests, interviews, and documents. Four places in the center and adjacent areas of marble producers were selected for the research sample. The data collected were analyzed using the spatial and ecological approach, fishbone, tabulation, percentage, and SWOT analysis. The result showed that numerous land mismatches contribute to the occurrence of natural catastrophes, such as improper vegetation kinds, population settlement patterns, excessive exploitation, and unfriendly human activities. This study recommends a variety of measures to improve the mining area.
      PubDate: 2022-12-28
      DOI: 10.22146/ijg.72627
      Issue No: Vol. 1, No. 1 (2022)
       
 
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