Indonesian Journal of Geography
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THE LANDUSE CHANGE RELATED TO THE INCREASE OF PEAK DISCHARGE OF PENGABUAN CATCHMENT, JAMBI, INDONESIA
No full textCatchments area is an ecosystem unit formed by several components influencing each other. Hence, if one of the components changes, it will influence the others. The objective of this study is to prove the influence of land use change on the increase of the flood discharge with the case study of the catchments area of Pangabuan River, Jambi Province. The decline of secondary forest area occurred from 1665.38 1an2in 1989 to 632.42 1an2in2007. A software simulation program for rainfall-runoff HEC-HMS was used to simulate the increase in the river flood discharge (i.e. sub-catchments area A is from 2677 m31secondin 1989 became 2988.3 m31secin 2007). Based on the land use change from 1989 to 2007, the study predicted the increase of flood discharge by 3148.50 m31sec in 2015. Conservation of the Pengabuan catchments area is needed to minimize the land use change, i.e. primeval forest and secondary forest, primarily in upstream region where large primeval and secondary forests are found
Population and environment in Indonesia
No full textThe present environmental situation is not compatible with our expectations. Pollution, erosion, floods and droughts have hit many parts of the world, and these disasters give us reflections on how serious are the environmental problems that befalls this planet of ours. In meeting its needs, mankind has exploited the environment to the utmost without caring about environmental conservation. Moreover, with the population explosion after the 1950s and the dependency of life upon the natural processes, the cultivated land to be inherited by future generations has gradually become increasingly barren and fertile.Efforts are absolutely necessary to check increasing population growth rates, to raise the standard of living for all people and to arouse and awareness of sustainable development policies so that a compability between development activities and environment can be achieved
Settlements' hierarchy and centrality in Bantul District Special Province of Yogyakarta, Indonesia
No full textIn this article, the assessment of centrality of settlements in a district in Central Java is discussed This with a view to determine a system of service centres in the area which is functional for regional planning purposes. The study area, Bantu! District, is a densely populated area which boasts a large variety of services. The assumption is tested that both the geographical location of the district, close to the city of Yogyakarta, and the high mobility of the population, due to a well-developed public transportation system, allow for a situation whereby the hierarchical position of a settlement, based on the combination of services provided is not necessarily similar to the centrality of that very settlement, based on the number of incoming interactions. From an analysis of an intensive set of primary data, it shows that although the level in the hierarchy of a settlement largely coincides with its centrality level, the centrality level of some settlements considerably deviates from what might be expected on basis of these centres' service level
The Use of Spot Image for Mangrove Inventory in Cimanuk Delta West Java, Indonesia
No full textThis study deals with an application of SPOT satellite data for mangrove forest inventory in Cimauuk Delta West Java (Indonesia). Mangrove of the area (7100 Ha) has been gradually decreasing by human pressure especially for fisheries purposes. In fact, mangrove here is a result of afforestation since1960, with Rhizophora mucronata and R. apiculata as main planted species. Other species are Lunmitzera racemosa, Excoecaria agallocha, Bruguiera gymnorhiza and Avicennia which grow naturally. SPOT data were digitally analysed using Didactim software. A color composite image was analysed. A barycentric supervised classification and textural analysis were applie.d. As an intermediate data, infrared color aerial photographs at 1130,000 (1981) were interpreted manually.At least two mangrove types of mangrove could be identified from the SPOT image. Dense mangrove was found in Petak 7, Petak 8, Petak 9 and Petak 12. In the other Petaks, mangrove were less than 20% of their surface. Mangrove of Rhizophora in 26 Petaks covered 290 Ha only
Geomorphological Approach for Regional Zoning In The Merapi Volcanic Area
No full textGeomorphologial approach can be used as the basic for identifying and analyzing the natural resources potentials, especially in volcanic landscape. Based on its geomorphology, Merapi volcanic landscape can be divided into 5 morphological units, i.e.: volcanic cone, volcanic slope, volcanic foot, volcanic foot plain, and fluvio-volcanic plain. Each of these morphological units has specific characteristic and natural resources potential. Based on the condition of geomorphology, the regional zoning can be compiled to support the land use planning and to maintain the conservation of environmental function in the Merapi Volcanic area
Micro-Environmental status of a dissected highland (College Tilla) of Agartala city, North East india
No full textThis paper assesses the present micro-environmental conditions of a dissected highland", College Tilla of Agartala city of North-East India. Geomorphologically Agartala city is located in a part of the basin of R Haora which consists of two main geomorphic units namely dissected high lands or tilla lands and adjacent flat alluvium lands. The elevated geomorphology of the tillalands play important role for the development and preservation of typical high landenvironment and rich ecological resources in some pockets of flat alluvium of R Haora basin for long time. Since the urban activities started on College Tilla only during early 2dh century the variation of flora and fauna of the tilla land is still.remarkable. During the recent period rapid extension of Agartala city causes theproblem of geomorphic degradation and affects the natural environmentalcondition of the area. Due to the construction of the buildings, roads, boundaries, water pipe lines etc the dense vegetation cover is removed rapidly and as a result of that now soil erosion and medium size land slides are becoming very commonfeatures in the city. Besides that the ecology of this area is now under serious degradation due to desperate human interventions on the tilla lands of Agartala Cit
A Critical Analysis of Globalilzation in the Context of Africa Underdevelopment
No full textThis paper examines globalization and localization processes that have occurred in tlze most developed and the least developed countries of the world respectiveZv. SpecificalZv, it jocuses on Sub-Saharan Africa (SSA) as a case study.While globalization is considered as a pride to the West and Europe, Africa is still being regarded as localized. The paper goes filrther to address the imbalance and disparity that have existed bern.'een the developed and underdeveloped countries in the areas of electronic, commerce, Information Communication Technology (ICT) among others. Also, the opportunities and challenges posed by globalization are critically focused. The paper identifies the Aji-ican problems of underdevelopment and proposes strategies by which these problems could be solved so that Africa would be able to 'catch up' in the globalization process
THE POTENTIAL OF RAINFALL AND ITS IMPACT TO GROUNDWATER STORAGE IN JAVA ISLAND
No full textThe objectives of the study are to map the distribution of rainfall in Java, toanalyze its potential and the impact to groundwater storage. To achieve thosegoals, rainfall distribution is mapped using isohyet method. From the averagedistribution of monthly rainfall, the annual potential of rainwater on everywatershed was calculated. Afterwards, the groundwater storage was analyzed andcounted by applying the water balance concept. The results of the study show thatthe mean of the highest annual rainfall is 4082 mm which occurs on Cisadane-Ciliwung watershed and the lowest one is 1421 mm on Citarum Hilir watershed.From the rainfall potential, Cisadeg-Cikuningan watershed has the highest rainfallpotential at the amount of 25342 million m31month and Grindulu Panggulwatershed has the lowest potential at the amount of 3678 million m3lmonth.Meteorologically, Cisadeg-Cikuningan watershed has the highest groundwaterstorage at the amount of 6088 million m31yearand the lowest amount of it occurson Madura watershed at 78 million m3lyear
Population mobility and the links between migrants and the family back home in Ngawis Village, Gunung Kidul Regency, Yogyakarta Special Region
No full textThe total population of Yogyakarta Special Region was 2,966,549 persons in 1985, while the population density was 931 persons/sq.km. The Yogyakarta Special Region is one of the poor areas of Java in an economic sense.The annual rate of its population growth is much lower than those of other provinces in Java. The region experienced a net loss of population through migration. The losses were greater in the poor areas of Gunung Kidul, one of its regencies.This study aims at developing the knowledge on the nature and incidence of population mobility from the rural to the urban areas, and investigating the extent and nature of the links established and maintained between the area of origin and the area of destination, by temporarily returning migrants in Ngawis Village of Gunung Kidul.The main reason for migrating out of the village is an economic one. Although the greater part of returning migrants stated that their economic conditions improved after moving out, the income they receive monthly is still low. The link between migrants and their relatives back home is very intensive. They maintain contact by visiting, sending letters, money and goods, and exchange views and ideas on developmental issues
ELECTRICAL RESISTIVITY BASED SHALLOW CRUSTAL DEFORMATION ANALYSIS IN AN ACTIVE SEISMIC ZONE
Get PDFThis paper aims to assess the shallow crustal deformation in a highly seismic-prone zone ofnortheast India. For that purpose, Tripura University campus has been selected which isnearly 8 km away from Agartala city. The field work was conducted by using electricalresistivity meter. Vertical Electrical Sounding or VES method of resistivity survey wasadopted for measuring the electrical resistivity and structural analysis of the study area.Total four VES points were recorded namely near the Department of Physics, Department ofGeography and Disaster Management, Teachers’ Residential area and Girls’ Hostel. Therecorded data was measured and two different electrical profiles were drawn i.e. (a) Physicsbuilding to Geography buildings and (b) teachers’ quarters to Girls’ Hostel. From theelectrical resistivity profiles, a clear break in resistivity characters has been observed in thewestern part which is located near the Tripura University Girls’ Hostel. This clearly provesthat a deformation occurred in this area below 4 m depth and it can be very dangerous if ahigh magnitude seismic slip takes place. From this observation, this hostel is detected as themost risk prone building. Apart from that, the teachers’ quarters near the Girls’ hostel havealso been detected as equally risk prone. From this point of view it can be recommended thatconstruction of heavy buildings should be restricted in Tripura University campus as thesubsurface deformation zone can create faulting during high magnitude earthquake