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INDONESIA
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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EFFECT OF URBANIZATION ON CHANNEL PLATFORMS OF RIVER KADUNA FROM 1962-2017, KADUNA STATE, NIGERIA Butu, Ali Williams; Emeribe, Chukwudi Nnaemeka; Leke, Dewingong Columbus; Jibril, Mamman Shaba
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 4, No. 2
Publisher : UI Scholars Hub

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Abstract

The study investigated changes in channel planforms of River Kaduna. Topographic maps were complimented with Mosaic of SPOT 5 satellite and Sentinel-2 images. Results showed that except for sinuosity index and channel length, channel width, braiding and channel migration exhibited considerable changes. These changes were evident in reduced velocity and stream energy, the type of sediment being transported, the silt materials being transported in suspension and the coarse sand and gravels being moved by lift and drag processes which are easily deposited, thus causing the channel to contract and braid. Channel migration occurred as gradual bend shifts leaving no evidence of lateral abrasion. Similarly, channel length did not change significantly to affect the sinuosity index. The result further revealed there was little lateral abrasion and the channel are relatively stable, implying that the materials being transported and deposited must have originated from the watershed. Anthropogenic factors such as urbanization, deforestation and agriculture activities contributed significantly to the observed channel alteration. There is a need to encourage mining gravel and sand from braided channels to provide sinks for sediments that otherwise would be deposited downstream. Afforesting the catchment area is required to create canopies to exposed surface and reduce sediment supplies.
ESTIMATION OF POTENTIAL WATER AVAILABILITY AND WATER RESOURCES CARRYING CAPACITY FOR BOGOR CITY SPATIAL PLAN Juniati, Atie Tri; Kusratmoko, Eko; Sutjiningsih, Dwita
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 5, No. 1
Publisher : UI Scholars Hub

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The aim of the present research is to examine the effectiveness of rational method widely used in calculating water availability for spatial planning in Indonesia. The rational method is developed mainly for estimating the characteristics of drainage infrastructure instead of estimating water availability. The effectiveness of rational method and Soil-Conservation Service Curve Number (SCS-CN) method are compared by testing their performance in estimating water availability in the Upper Cisadane river basin in West Java, Indonesia. The results shows that calibrated SCS-CN model performs better than Rational model with R2 and NSE of 0,62 and 0,37. Result of model validation yields R2 = 0,73 and NSE = 0,52. The result suggests that SCS-CN performs better than the rational model in simulating the character of water catchment area and is suitable for model of choice in water availability estimation.
SPATIAL PATTERNS OF TELECOMMUNICATION SIGNAL QUALITY, INTERNET SPEED, AND ONLINE GAME LATENCY IN EAST JAKARTA Septian, M Rizky; Susilowati, Maria H.D.; Zulkarnain, Faris
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 5, No. 1
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Abstract

In urban areas where there are many centers of government, trade, education, and other activity, telecommunication device is widely used on publication, transactions or services, administration and promotion, while the internet needs of individuals are commonly used for communication, socialization, seeking information and entertainment. At this time, online games are not only played by using a personal computer but also the presence of a smartphone with its advanced technology that can be connected with the internet network is one of device for online gaming. Mobile gaming requires good latency to run smoothly and comfortably. The need for the telecommunications system uses frequency waves for signal propagation. However, signal propagation can be interrupted due to many factors that affect, for example, distance from BTS (Base Transceiver Station), building density, and terrain shape. This study investigated the relationship between signal quality, internet speed, and latency to the distance from BTS, building density, and shape of the terrain. The results showed that signal quality, internet speed, and good latency were found in areas where near BTS and had a low level of building density.
HEALTH PROTOCOL CERTIFICATION FOR TOURISM BUSINESS DUE TO COVID-19 OUTBREAKS IN BALI Syahrin, Alfi
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 5, No. 1
Publisher : UI Scholars Hub

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The World Health Organization on March 11, 2020 declared the Covid-19 outbreak a global pandemic. Tourism is one of the sectors most affected. The number of foreign tourist visits to Indonesia has decreased significantly, namely 64.11% in March 2020 when compared to March 2019. To restore this condition, it is very necessary to prevent the spread of Covid-19 and carry out certification for tourism business actors. The data for analysis was collected by searching for words that are closely related to the topic of research on the Google Search Engine to obtain the website followed by visiting the intended website that has the necessary data. Descriptive analysis used to describe data based on the number and type. There are three research questions to be answered: (1) What are the efforts to prevent the spread of Covid-19? (2) Where is the distribution of tourism businesses that are certified by health protocols? (3) What percentage of the total number of certified tourism businesses out of 1,000 are targeted? More than 87.5% of certified tourism business actors obtained and a map of the distribution of the number and types of certified tourism businesses in Bali is compiled.
POTENSI WILAYAH TERDAMPAK KERUNTUHAN BENDUNGAN MATENGGENG DI SUNGAI CIJOLANG Utomo, Bagus Prio; Rahardjo, Adam Pramudji; Legono, Djoko
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 3, No. 1
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Abstract

Matenggeng Dam, which plans to be built on the Cijolang River, is a multifunctional dam that has many benefits for communities to irrigate irrigation, raw water, flood control, power generation and tourism. Besides having many benefits, dam construction also keeps very high potential hazards. One of the potential hazards that can occur is the dam breach caused by a crack due to water going over the crest (overtopping) or fracture due to seepage in the body of the weir (piping). Dam breach will cause very big flood so it can cause casualties and damage to property. Using the HEC-RAS 5.0.3 program, we found that in the overtopping scenario, the spillway dimension was still able to pass the maximum discharge (QPMF) of 9.067 m3 /s so that the water did not reach the crest. In the piping scenario, estimated that the extent of inundation reaches 17.568 ha and will inundate 92 villages, 416 km of roads, and 169 public facilities. Over half of the flooded areas are categorized as high to extreme hazards with rice fields are the areas that fall into the category most.
DESIGNING THE SPECIAL PILOT ECONOMIC ZONE: AN ALTERNATIVE APPROACH TO REVITALIZE LIVELIHOODS ON PEATLANDS Budiman, Ibnu; Januar, Rizky; Daeli, Willy; Hapsari, Rahmah D; Sari, Eli NN
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 4, No. 1
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Peatland restoration projects in tropical countries could prevent environmental disasters such as peat fires. In Indonesia, one of peatland restoration activities is the revitalization of the livelihoods of communities around peatlands. Nevertheless, this activity is still lacking in reducing the environmental pressures from the communities on peatland. We aim to find a comprehensive strategy to design a sustainable bioeconomy on peatlands. This study draws on spatial, qualitative, and quantitative data from the literature, project and policy documents, open-source web application, observations from the field and meetings; and interviews with key stakeholders at national level and three Indonesian provinces. We found that an ecosystem-based special pilot economic zone (SPEZ) is a potential proposal that can provide a framework for a sustainable peatland bioeconomy. We suggests seven phases for planning and implementation of the SPEZ; 1. Preparing its spatial planning to support its legal aspects; 2. Field observation to derive biophysical information of the location and determining peatland suitability; 3. Identifying target group, paludiculture commodities and alternative livelihoods; 4. Analyzing the value chain, market demand and conducting a cost-benefit analysis; 5. Natural capital accounting; 6. Designing social innovation to trigger investment and market chain; and 7. Community engagement. From our study in Riau, South Sumatra, and Central Kalimantan, each of the phase present different challenges and opportunities especially in terms of regulation for land permit, institutional arrangement, market chain for peat products, remuneration of external benefits, and perception and capacity of community for cultivation on peat.
SEMIOTIC STUDY OF SETTLEMENT’S SPATIAL PATTERN IN KUNINGAN REGENCY, WEST JAVA Kersapati, Muhamad Iko; Setiadi, Hafid
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 5, No. 1
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This study discusses how people in Kuningan Regency divided into indigenous and immigrant communities interpret human relations with nature as well as changes in the context of the natural environment identified through the configuration of the components of the settlements. The observed natural environments include water, land, forest, and mountains, while the settlement components include houses, village halls, mosques, cemeteries, and rice fields. The data used in this study is qualitative data from various literature, maps, observations, and in-depth interviews. The method used in this study is the method of interpretation to reveal the meaning behind the spatial pattern of settlement as a unity of signs. The results reveal that the influence of water and land was more dominant in nature-depended traditional settlement and transition settlement. Meanwhile, forests and mountains did not have a major impact on the spatial patterns of all three categories of settlements.
THE RELATIONSHIP OF FIRE INCIDENT AND AREA VULNERABILITY: CASE STUDY OF WEST JAKARTA MUNICIPALITY, INDONESIA Nugraha, Fajar; Lestari, Fatma; Semedi, Jarot Mulyo; Rahatiningtyas, Nurul Sri; Wibowo, Andrio A.
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 6, No. 1
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Fire incident has a great impact on the loss of lives and financial loss due to property damage. Areas with high population density, densely physical building conditions, and irregular building patterns commonly form congested residential slum areas are vulnerable to fire hazards. The capital city of Jakarta is the most populous city in Indonesia and the most densely populated city, with an average of 15,900 people per sq km. In 2019, there was 2,109 fire incident recorded, and nearly 20% of them occurred within the West Jakarta Municipality area. This study investigates the relationship of population density and building density, which are considered vulnerability factors of an area, to fire incidents within the West Jakarta Municipality area in 2019. This study investigates 56 villages within the eight subdistricts of West Jakarta Municipality. This study is an ecologic study, and the bivariate test used is Spearman's rank correlation. The fire incident was significantly correlated with the building density (p-value=0,0001; r=-0,533) and the population density (p-value=0,04; r=-0,276). The distribution of densely populated and high building density villages is dominant in West Jakarta Municipality's east region. In contrast, the villages with high fire incident are dominant in West Jakarta Municipality's west region.
PASSENGERS’ DEVIANT BEHAVIOR MAPPING IN DURI TRAIN STATION Zubair, Ahmad; Sumadio, Widyawati; Putri, A.R.Z
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 6, No. 1
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The lack of train station facilities influences the passengers' deviant behavior. This paper aims to analyze the Pattern of Commuter Line passengers' behavior in Duri Station. In collecting data regarding the passengers' behavior, we observed the passengers using the Place Centeres Mapping method. This observation technique aims to understand how people utilize or accommodate their behavior at a particular time and location in the train station. This research model is divided into two stages. The first stage consists of observation and semi-structured interviews with the passengers. The second stage examines the passengers' behavior based on location within the train station. In this study, we analyzed the data through data triangulation and spatial analysis, along with several theoretical discussions about where, when, and why the passengers conduct deviant behavior. The results showed that passengers' deviant behavior was based on three components of the station zones: the arrival zone, main facilities zone, and platform zone. The main facilities and platform zones are more prone to passengers' deviant behavior. The most common deviant behaviors are pickpocketing and verbal harassment, whereas the least deviant is sitting on the platform floors. These deviant behaviors occur mainly due to the fact that during peak hours, there are less security guards than there are passengers.
THE IMPACT OF TOLL ROAD CONSTRUCTION ON CHANGES IN BUILT-UP LAND (CASE STUDY OF TRANS JAVA TOLL ROAD) Fakhruddin, Ahmad; Gultom, Yohanna M.L.
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 5, No. 2
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This study aims to see the impact of toll road construction of the Trans Java toll road on changes in a built-up land. The data processing and analysis in this study uses a difference-in-difference approach to see the impact before and after the construction of the toll road. This study uses district/city administrative boundaries as the unit of analysis and 92 regencies or cities. The selection of locations that are the focus of the research is based on the regency/cities through which the toll road passes as well as those bordering the regency/cities through which the toll roads pass.. The results of data processing and analysis show that there is an increase in the area of built-up land by 7% when compared to regency/cities that are not passed by toll roads. From a policy perspective, the construction of the Trans Java toll road can be said to have a positive impact on the built up land. That is, the closer to access, the more economic activity and growth of built up land

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