Indonesian Journal of Geography
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Geospatial Analysis of Road Traffic Accidents, Injuries and Deaths in Nigeria
Get PDFRTAs in Nigeria are very high and have become progressively important because of their heavy health and financial burden. The few geographic studies on RTAs in Nigeria are limited to their mere spatial distribution and associated risk factors, with very little attention given to their spatial clustering patterns and the detection of hotspots. With the aid of Global Moran’s I and Local Getis, the study found some evidence of significant positive spatial autocorrelation, and consistent clustering of RTAs, RTIs and RTDs in the southwest from 2002 to 2007 which suggested the presence of an accident belt in the southwestern region, which has been accounted by poor road infrastructure, relatively high level of economic development and high vehicular movements. The study recommends the deployment of road safety officials to the accident belt, strict enforcement of safety belts and helmets, and periodic road maintenance
The Dynamics of Spatial Structure and Spatial Pattern Changes at the Fringe Area of Makassar City
Get PDFThe study is conducted at the fringe area of Makassar City by analyzing dynamics of spatial structure and spatial pattern changes at the fringe area of Makassar City. It applies quantitative and qualitative approaches (mixed method). Data is acquired from some sources and informants living at the fringe area of Makassar City. Spatial utilization shift and development of transport infrastructure, especially for main road corridor connecting down town of Makassar City and fringe area, affect significantly spatial structure and spatial pattern changes at the fringe area of Makassar City. Dynamics of spatial structure and spatial pattern changes contributes changes of resident mobility; while, development tendency of the existing spatial and land use is no longer determined based on productivity, but it is valued by functions of space and land at the fringe are of Makassar City
Land use planning of paddy field using geographic information system and land evaluation in West Lombok, Indonesia
Get PDFPlanning analysis to increase rice production either through intensiḀcation of existing paddy Ḁeld area or ex-tensiḀcation in potential land area was conducted in West Lombok Regency, West Nusa Tenggara Province, Indonesia. Existing paddy Ḁeld was delineated using high-resolution data from IKONOS imagery of 2012. Land use and land cover outside existing paddy Ḁeld were interpreted using SPOT-5 imagery of 2012. ἀe Automated Land Evaluation System (ALES) was used for land suitability analysis for paddy. ἀe results are interpreted in terms of the potential of paddy Ḁeld intensiḀcation in existing paddy Ḁeld area and the potential of extensiḀcation in land potentially used for paddy Ḁeld. ἀe result of analysis showed that in West Lombok Regency, there are still possible to do intensiḀcation and extensiḀca-tion of paddy Ḁeld to increase rice production in order to improve regional food security
Agricultural Loss Caused by 2007 Sidoharjo’s Flood and its House-hold Impact
Get PDFFlood is an undeniable reality that threaten Sidoharjo Village, as part of Sragen District. It is affected by the presence of Mungkung River, the tributary of Solo River, which crosses in the area. It is certainly going to be one of the factors inhibiting the development and economic growth in the region, given the agricultural sector is one of the backbones of the economy potentially disturbed by the flood. The information about the flood and its impacts specifically related to agriculture are needed to determine the precise policies. The research focuses on 2007-flood mapping, agricultural production loss assessment, and farmer resilience, as expressed in their ability to continue the next cropping after being hitten by the 2007-flood. The flood map was built by integrating the local knowledge and the Digital Terrain Model (DTM). The information about 2007 flood was collected by interviewing the local people. The DTM was built by interpolating the detailed spot height directly measured in the field. As the result of the integration, the depth of the flood immersing the paddy fields reaches approximately 3 meters. Beside the flood depth, the growth stage of rice also determines the paddy vulnerability. It refers to the plant height and the sensitivity to the water immersion. There are three stages i.e. vegetative, generative, and graining phases. The vulnerabilities were constructed based on the synthetic data obtained via Focus Group Discussion (FGD). The production loss of paddy of the research area was counted based on the vulnerability. A grid-based GIS method is used in the loss calculation which produces a value of Rp. 1,137,350,000.00 (about USD 100,000.00). The losses influence the farmer ability to continue the cultivation in the next season, which in this study is defined as farmer resilience. To investigate the resilience level, 32 respondents were proportionally randomized to each flood zone. There are three zones created based on the flood depth. The influencing factors and their weights and scores were determined by the farmer representatives via FGD. Meanwhile, the socioeconomic data were collected by using the questionnaires. The results show that most of the farmers in the area (56.3%) are categorized in moderate resilience level
Livelihood Srategies and the Welfare of Transmigrants
Get PDFTransmigration is one of the manifestations of artificial human community that is expected to increase thenatural resource utilization activities for welfare in a transmigration location. This paper is to find out the livelihoodstrategies and their effect on transmigrants’ welfare. Results of the study indicates at Stage I (the first 1.5 years), transmigrantsgenerally applied a survival strategy by relying on the living allotment of government. At Stage II (the second1.5 years), a part of them sougth other source of income for establishing their livelihood. At Stage III (the third 2 yearsand afterward), a part of them left the transmigration location, while others have able to survive until the primary commodityof rubber can be productive after the sixth year of cultivation. Welfare is achieved by those that could to applythe livelihood strategies to have the established sources of income outside the transmigrants’ primary commodity, particularlyfrom Pasuruan, East Java Province
Impacts of land cover change on climate trend in Padang Indonesia
Get PDFἀe purpose of this study was to analyze the trend of climate change through changes in the elements of Green House Gases (GHGs), includes the trend of CO2, N2O, and CH4. ἀe change of the extreme rainfall and temperature indices due to land cover change into developed area in Padang. IdentiḀcation and analysis trends of climate change and extreme climatic events were analyzed by using RclimDex the Expert Team for Climate Change Detection and Indices (ETCCDMI) technique. Where as the analysis and interpretation of land cover changes into developed area used Landsat TM 5 and Landsat 1985 7 ETM + of 2011 by ERDAS 9.2 GIS with the supervised classiḀcation method and GIS Matrix. ἀe results of the study provide informations of land cover changes into developed area at forest land (11,758.9 ha), shrub (3,337.3 ha), rice Ḁelds (5,977.1 ha), and garden (5,872.4 ha). It has an implication on increasing of the ele-ments of GHGs concentration such as CO2 (14,1 ppm), N2O (5,4 ppb) and CH4 (24,8 ppb). ἀis condition lead to an extreme temperature and presipitation indexs trends in Padang
Analysis Community’s Coping Strategies and Local Risk Governance Framework in Relation to Landslide
Get PDFAnalysis of people perception and analysis of the coping strategy to landslides are the two elements that are es-sential to determine the level of preparedness of communities to landslides. To know the preparedness of government and other stakeholders in facing landslide, the analysis risk governance framework was required. A survey using questionnaires with random sampling was applied to assess the level of people perception and people coping strategy related to landslide. Analysis of risk governance frame work was done at the district and sub-district level. ἀe study found that people perception related with landslide dominated by high and moderate level. Age and education are two factors that inḀuence the people’s perception to landslide. Local people applied four types coping strategy, which are: economic, structural, social and cultural coping strategy. Totally, 51.6% respondents have high level, 33.3% have moderate level and only 15.1% respondents that have low level of coping strategy. ἀe factors that inḀuence the level of coping strategy are education, income and building type. Analysis of risk governance framework is limited to the three components including stakeholder involvement, risk management and risk communication. Based on the data analysis, the level of stakeholder involvement at the district scope was categorized on the moderate till high and the level of stakeholder involvement at sub-district level was categorized on the high level. Generally, the risk management of Karanganyar was categorized on the moderate level and high level and the risk management in Tawangmangu was categorized on the moderate level. ἀere are some elements must be improved on the risk governance framework, those are data management, the pattern of relationships among stakeholders, increased participation of NGOs, constructed and updated landslide risk map, enhancement of microᴀnance role in helping the com-munity when disaster strikes and dissemination of information about the landslide to the local community
Characterization of Jos City Road Network, Nigeria
Get PDFἀe performance of road network depends on its topological characteristics which help to deḀne its connectiv-ity. ἀis paper analyses the topological characteristic of Jos city road network and its bearing on traᴀc ᰀow situations. Simple graph theoretic measures oᬀered the framework on which the problem was approached. ἀe study requires the abstraction and analysis of the topological structure by selection of certain variables relating to the road connectivity. ἀese include the Beta, Gamma and Alpha index, the PI, Cyclomatic number, and the spread and density of the network. Information on these variables was obtained through the use of vector data model to abstract the road network graph from the Quick-bird satellite imagery used for the study. Results of the Ḁndings reveal that, the road network of Jos City Centre as a whole have achieved an average level of connectivity, showing Beta index values of 1.4049, Gamma index value of 47.06%, Alpha index Value of 20.63%; and a pi and cyclomatic number of 24.74 and 165 respectively, the spread of the network is moderate exhibiting a value of 23, even though some areas have more concentration of roads than the others; and has a road density of 52 links per km2. Based on these Ḁndings, the need for construction of new roads is imperative so as to improve the eᴀciency of connectivity and accessibility within the city
Urban Socio-Economic Variables and Intra-Urban Trips in Ogun State, Nigeria
Get PDFThis study examines the relative influence of socio-economic variables of urban centers on intra-city tripgeneration. Data were collected on sixteen socio-economic variables and household trip generation in fourteen urbancenters of the state. The nature and degree of relationships between socio-economic variables and trips generated wereestablished through simple bivariate correlation technique. Multiple regression analysis was used to explain variablesthat predict trips generated. The principal component analysis was used to resolve observed collinearity problem in regressionanalysis.There is a strong significant positive correlation between trip generated and 13 out of sixteen socio-economicvariables. The principal component analysis on the socio-economic variables produced two components: socialand commercial component and industrial development component.The two components explain 58.68% of variationin intra-urban trips generated (F=7.830, P≤0.50), (F=13.982, P≤0.50). The industrial development component does notprovide significant explanation.The study emphasizes the need for proper planning and effective monitoring of developingof socio-economic variables in cities because of their critical influence on trip generation
Urban Risk Assessment of Lahar Flows in Merapi Volcano (Study Case: Muntilan Urban Area, Central Java)
Get PDFThe objective of the research was to analyse probability of lahar flows occurrence in Muntilan urban area,Central Java. By using integrated methods, which involve the numerical simulation program, Geographic InformationSystem (GIS), Remote Sensing (RS) and field verification to produce lahar flows Hazard Map and Risk Map. Muntilanurban area located at western flank of Merapi volcano, and in down stream of Lamat river. The river is Lahar River thatis endangering from Merapi volcano, which flowing down to cuts a cross of that area. Therefore, Muntilan urban areais vulnerable area from lahar flows disaster. Lahar flows, generally occur during intense rainfall on saturated volcanicdeposit in upper stream of river or wall of volcano. Lahar flows are extremely dangerous especially to those living invalley areas near a volcano, which can undercut banks and cause houses destruction situated on the banks, and canbury and destroy resident, structures, infrastructure facilities including roads and bridges. Meanwhile, development ofMuntilan urban area that caused many illegal settlements appears surrounding that area. Occasionally, un-benefit peopleconstructing house in disaster prone area, such as down stream of river side that have lahar flows risk. The research wasconcluded that lahar flow occurrence in 100 years return period will be buried the Muntilan urban area. With the methodsintegrating of GIS, RS, field verification can be done analysing of lahar flows hazard map, and risks map to producerisk assessment in Muntilan urban area