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Jurnal Geografi LIngkungan Tropik (Journal of Geography of Tropical Environments)
Published by Universitas Indonesia
ISSN : -     EISSN : 25979949     DOI : 10.7454/jglitrop
Core Subject : Science,
Earth & Planetary Sciences
JGLITROP is a scientific journal published by Department of Geography at the University of Indonesia focuses on the application of Geography in tropical environment. The focus of the issues consist of: Physical Geography Human Geography Remote Sensing Geographic Information System Environmental Sciences Multidiscipline/Others
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 70 Documents
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PEMODELAN DEBIT BANJIR SEHUBUNGAN DENGAN PREDIKSI PERUBAHAN TUTUPAN LAHAN DI DAERAH ALIRAN CI LEUNGSI HULU MENGGUNAKAN HEC-HMS Marko, Kuswantoro; Zulkarnain, Faris
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 2, No. 1
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Abstract

Upper Ci Leungsi catchment area is one of the catchments that has an important role in contributing water runoff to downstream areas i.e. Bekasi City. High population growth has led to significant changes in land use that impact in potentially increased surface runoff causing flooding. This study aims to estimate the flood discharge that will occur in relation to land cover change prediction in 2020, 2025, and 2030. The SCS-CN method is used for calculation of runoff volume and synthetic unit hydrograph using HEC-HMS. The CN value obtained on the existing data i.e. 72.5; 74.4; and 75.4 in 2005, 2010, and 2014 respectively, whereas the predicted CN values in 2020, 2025 and 2030 increased by 77.2; 78.4; and 79.4 respectively. This study concludes that the prediction of flood discharge in 2020, 2025, and 2030 has increased, from 2020 to 2025 by 28.4%, and from 2025 to 2030 by 26.8%. For a 25-year re-period with 197mm design rainfall resulted in flood discharge of 624.6, 653.0, and 679.8 m3 / dt in 2020, 2025, and 2030 respectively. This study is highly useful for urban development planning, particularly in anticipating the damages due to floods in future.
STUDI PENGARUH PERUBAHAN TATAGUNA LAHAN TERHADAP KARAKTERISTIK BANJIR KOTA BIMA Ismoyojati, Goyu; Sujono, Joko; Jayadi, Rachmad
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 2, No. 2
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Abstract

The high intensity rainfall in December 21st 2016 has caused major flooding in Bima City. It caused infrastructure destructs and considerable losses. The condition of the watershed in the upstream experiencing decrease of forest area and the gorwth of the city were suspected as some of the factors causing the big flood. Significant land-use changing brought impact on the changes of watershed response to rainfall. The purpose of this research was to determine the effect of land use changing on the flood occurence based on the hydrological model of rainfall-flow in Rontu watershed in the City of Bima. In this research, the effect of land use changing was analyzed by determining the value of curve number (CN) of the watershed in 1996, 2006 and 2016. CN was calculated with the help of HEC-GeoHMS 10.3 software. Furthermore, CN value was used in effective rainfall calculation as the input of hydrograph flood simulation by using the Nakayasu synthetic unit hydrograph transform model. The result showed that other than extreme rainfall, the flood was also affected by the land use changing. In Rontu watershed, over the past twenty years (1996 to 2016), land use changing composition occured i e. 28,68% forest decrease, 3,10% settlement increase, 26,83% farm field incease, 5,82% shrubs decrease and 3,62% rice field increase. Such changing in wet conditions in Padolo sub-watershed resulted in increasing CN of 4,55%, peak discharge of 10,26% and runoff volume of 9,82% and in Malayu sub-watershed resulted in increasing CN of 6,78%, peak discharge of 17,29% and runoff volume 18,00%.
PERANAN PENGINDERAAN JAUH DALAM MENYOKONG KAJIAN PEMETAAN BATAS WILAYAH DARAT (STUDI KASUS: DESA BATURETNO, KECAMATAN BANGUNTAPAN, KABUPATEN BANTUL, DIY) Ahmad, A G
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 1, No. 1
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Border mapping is an activity which could be done continuously as the region develops. Many kinds of methods in border mapping have been done, and each has strength and weakness. Technology of remote sensing which continues to develop can be used to optimize border mapping to be more efficient. Remote sensing is one of the way to know the condition of earth surface, which in border mapping uses high resolution image, Quickbird image. The spatial accuracy of Quickbird image which reaches 2.4 meters per pixel can be used to monitor land use, to be created into a map which gives various basic spatial information. Border search that has been agreed on is done on the image, meanwhile field activity is done as additional information in border search. Three sample points that is taken during the research show that remote sensing information that is got can support regional border search because there are differences between BPS data and automatic calculation result according to real regional border, where the area reaches 24 hectares. The study using Quickbird image can be optimized for regional border search on land which has homogenous physical condition.
GEOGRAFI KEJAHATAN, TEORI DISORGANISASI SOSIAL, DAN KAJIAN TERHADAP KEJAHATAN DI RUANG PERKOTAAN Olii, Mohammad Irvan
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 3, No. 1
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Spatial distribution of crime at urban space has long been part of geographical studies. One theory that been used to examine such spatial distribution is Social Disorganisation Theory. This article will review the used of social disorganization theory on an article by de Melo, Andersen and Matias (2017) which studied geography of crime in a Brazilian city. This article will also briefly explain the historical context of the aforemention theory with its connection to studies of urban problems, especially crime problems, and also the basis thought of the theory that exist. The critiques of social disorganisation theory will also be explain. At the end of the article, it will explain differences of comprehending urban space based on the social disorganization theory and the urban space on Indonesian contex
STRATEGI PENGEMBANGAN DESA WISATA DI KELURAHAN JELEKONG, KABUPATEN BANDUNG Sumantri, Diaz
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 2, No. 2
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Tourism is one of the priorities of the national development in the fields of economy, tourism development including forms of village tourism. Based on the decision letter of the Regent of Bandung Number 556.42/Headers. 71-Dispopar/2011, Jelekong Village is one that is established as a village, because the votes have characteristic patterns of social life of the community in the form of a unique culture puppetry and painting and puppet craftsman. To develop the area into a tourist village, required an appropriate strategy based on the potential of the resource. The approach that the author use descriptive research, namely through the survey method with variable single research namely development potential of the tourist village, where aspects of the physical aspect i.e. the charge indicators will be, social, spatial, buildings, culture, crafts and ceremonies, as well as supporting other tourism indicators such as accessibility, accommodation, community, tourists and tourism managers. As for the results of the study showed that the potential Wards Jelekong village embodiment based on criteria, classified into class II i.e. enough potential to be developed. Attitude and positive values indicate community participation in supporting its development. Based on the results of the SWOT analysis, the strategies that can be used in Jelekong village development that is developing and organizing potential attractions; preservation of customs; accessibility improvements; develop various infrastructure supporting tourism; partnering with related stakeholders and investors; improving promotion; engaging the public in every stage of the development of village tourism.
KARAKTERISTIK MATAAIR DAN PENGGUNAAN AIR DOMESTIK DI KECAMATAN GEMAWANG, KABUPATEN TEMANGGUNG Firizqi, Febby; Irshabdillah, Muhammad Ridho; Prayogo, Edwin Suryo; Rahmawati, Aulia Ika
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 3, No. 1
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Spring is the concentration of groundwater flow out on the surface. There are several factors that cause the emergence of springs such as contacts between geological formations, and slope changes. The aim of this research is to a) inventory the springs in Gemawang district; b) to test the water quality of the springs in the Gemawang district; c) to know the springs conservation efforts conducted by the community and Local Government of Gemawang district; d) to know the number of domestic water needs of each village in Gemawang district. The method used in this research is field survey to inventory the existing springs in study area and interview method to answer the 3rd and 4th objectives. The results obtained from this research are: a) the number of springs found in study site totalling 52 springs; b) the tested springs characteristics include DHL, pH, temperature, and discharge; c) Efforts to conserve water resources can be done by increasing the utilization of surface water and ground water, improving the efficiency of irrigation water, maintaining water quality according to its allocation; d) Water use for household needs include washing, eating/drinking, showering, watering plants, and washing vehicles.
PEMODELAN SPASIAL DISTRIBUSI KARBON MONOKSIDA DI KOTA BANDUNG Arista, Faza; Saraswati, Ratna; Wibowo, Adi
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 3, No. 1
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Abstract

Air pollution is a significant problem in many urban areas. WHO declares 91% of people in the world breathe unhealthy air. Bandung, as a metropolitan city continues to experience increased population growth is causing an increase in the land area, woke up and dropped in the green area. The raises the problem of the decline in air quality. This research aims to analyze the spatial distribution of pollutants in Bandung City and its relation to distribution patterns of land surface temperature, the building density, and density of vegetation. The data used in the form of pollutant levels and Landsat 8 images in the dry month of 2018. The methods used in the study of spatial interpolation methods of the form IDW, LST, NDBI, and NDVI. Statistical tests using correlation and regression. The results showed that the spatial distribution of CO concentrations showed a pattern that was spread almost the same in the dry month of 2018, namely at a relatively high land surface temperature and building density and relatively low vegetation density, high levels of pollutants. The results of statistical tests declared land surface temperature, the density of buildings and vegetation density correlated moderate level against the distribution of CO and regression results declared land surface temperature, the density of buildings and vegetation density there are influences that significantly to the distribution of CO.
STUDY OF PHYSICAL ENVIRONMENT BASED ON LAND SYSTEM MAP OF KABUPATEN BANDUNG Mukhtar, Mutia Kamalia; Nurwadjedi, Nurwadjedi
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 3, No. 2
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The environmental damage in Kabupaten Bandung is critical. To solve the environmental problems, the integrated spatial data of the physical environment is required. Land system data as the integrated spatial data which describes the characteristics of land are useful for the analysis and evaluation of the environmental conditions. The objective of the study is to describe the characteristics of the physical environment of Kabupaten Bandung based on the land system map for the input of decision-making in achieving sustainable development. The study used the spatial analysis and descriptive analytical method. The land system data was obtained from the Badan Informasi Geospaasial (BIG). The results show that the landforms in Kabupaten Bandung are dominated by volcanic and fluvial landforms. The volcanic landforms has morphology dominated by mountainous areas with the slope steepness more than 45% and the soil types of andosols. The land capability of these mountainous areas belongs to grade 7 (for conservation areas). The fluvial landforms are lacustrine plains, which are prone to flood due to inundation. From this study, it is concluded that the land utilization in Kabupaten Bandung, particularly in mountainous areas, is not in accordance with the land carrying capacity. To achieve the sustainable development, the land utilization should consider the regulation of spatial planning, by which the lands with slope steepness more than 40% are categorized as protected areas.
PEMODELAN ALIRAN LAHAR GUNUNG API MERAPI UNTUK PERHITUNGAN RISIKO KERUGIAN PADA PENGGUNAAN LAHAN TERDAMPAK DI BANTARAN SUNGAI BOYONG, PAKEM, SLEMAN, D.I. YOGYAKARTA Kurniawan, Verry Octa; Mei, Estuning Tyas Wulan; Hadmoko, Danang Sri
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 3, No. 2
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This study aims to conduct lahar of Mount Merapi on the Boyong River modeling. In addition, this study also to identificate the affected land use of the model, and analyze the risk of loss which are the focus of this study. Lahar modeling was made by using the LAHARZ application from DEMNAS 2018 data and 3 lahar volume scenarios based on the eruption of Mount Merapi in 1994. Identification of affected land use was carried out by using Sentinel-2B 2018 image interpretation with Maximum Likelihood Area (MLA) method, continued by verification using purposive sampling method in the field. Loss risk analysis was done by determining land use that has an economic value, which followed by classifying the level of damage based on the hazard level of lahar. The results of this study showed the effect of volcanic lahar volume and slope of Mount Merapi on surrounding land use. The generalization process in the DEM data did not have a significant difference to the lahar model. River morphology is very influential in this modeling output. Citra Sentinel-2B is suitable for identifying existing land use with the scale used is 1:10.000. The use of affected land was classified into 6 and 3 of which have economic values, namely settlements, buildings, and rice fields. There are 16 hamlets that are affected by the danger of lahar with residential land use which has the greatest total loss, while the use of wetland areas is the most extensive area of this danger.
CHARACTERISTICS OF TRANSIT ORIENTED DEVELOPMENT AREA (CASE STUDY: JAKARTA MRT) Siburian, Tomi Enjeri; Sumadio, Widyawati; Shidiq, Iqbal Putut Ash
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 4, No. 1
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The city of Jakarta is famous because the traffic jams, so the transportation sector needs special attention. Based on data from the Jakarta Transportation Management Agency, of the 47.5 million trips in Jakarta City, only 24% used public transportation. The Jakarta City Government has provided public transportation modes, namely the MRT. This mode of transportation offers a basic concept of TOD, area around the 400 meter buffer from the station can be accessed by walking. This concept has been developed in various cities on the Continent of Europe and America. The space conditions in a TOD based area can be assessed using the TOD Index measurement. Each TOD Index criterion has its own indicators. This study uses 8 criteria and 18 indicators that can measure the value of the TOD Index at each MRT station. Processing data is using spatial processing so that each indicator can be analyzed holistically from a spatial perspective. The TOD area of Bendungan Hilir Station is a station with the highest TOD value, amounting to 0.71. TOD Station in Lebak Bulus Station takes the lowest TOD Index value of 0.31. The TOD Index’s value at each station can be influenced by the weight of each indicator and criteria. Through this research, it is hoped that each policyholder can pay attention to every indicator on the station that is deemed necessary to be improved if needed for a TOD-based area that is in accordance with the concept of a smart city

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