Indonesian Journal of Geography
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Geomorphological approach to surficial material evaluation in the Serang River Basin Kulonprogo, Yogyakarta, Indonesia
No full textThis study deals with the evaluation of surficial material characteristics, based on landform units in the Serang River Basin. The approach concentrates on the use of geomorphological mapping by using aerial photo interpretation and field investigations. The landform units, as defined by geomorphological mapping, was used as sample areas to determine the surficial material characteristics. These characteristics include grain size, sphericity and roundness coefficient. The measurement of the material characteristics in the river bed was based on 100 gravel pebbles systematically sampled along the length profile of the river. During the survey, 14 cross sections were chosen. The potential of the alluvial material resources was estimated by their areal distribution, thichness sedimentary and characteristics.Among landform units in the studied area which contains a large amount of the materials are: natural levees, river terraces, river bed and hill foot slopes. Generally, the river bed materials decrease in grain size downstreams and increase in sphericity and roundness coefficient. In some cross sections a reversal was found to the general tendency. This situation might be due to human activities for getting material for construction. Due to human activities some environmental impacts occur
Research note on the social and economic life of village people in central Java: A Case Study of Two Villages in Yogyakarta Special Region
No full textThis is a tentative research note of the field-work which was conducted under the title of "Research Note on the Social and Economic Life of the Village People in Central Java" in two villages in Bantul Regency, Yogyakarta Special Region for the period of one year September 1989 to March 1990.This research aims at finding the Javanese attributes of the social structure of changing village community and social and economic life of the village people. In general the spread effects of economic development and the process of social change in the rural areas are different between the village communities which are near from the cities or distant. To accomplish the research purpose more efficiently, the research study was carried out in the two villages in Bantu' Regency where is one of the typical Javanese and wet rice areas.But, in this note, objectives and methods of the research, general condition of two hamlets, composition of the households, occupations of the households'heads and farm households by owner ship status are covered. These results of the household survey in the two research sites indicate some emerging trends that the effects of economic development is stronger in the village within easy commuting distance to Yogyakarta City and that the attributes of the village people directed to money economy are also stronger there
Spatial Determinants of Import Traffic Distribution At Port Harcourt (Nigeria)
No full textThis paper highlights the result of a study carried out to examine the Geographic determinants of import traffic distribution at the Port Harcourt Port. A substantial aspect of the study involved building a regression model to estimate import distribution from the Port. The import function was specified in log-linear form. The adequacy of the model was then tested; this, involved statistical experiments to obtain the R-squared, as well as t and f values. Further test on the adequacy of the nwdel was conducted through diagnostic exercises designed to check for inulticollinedrity and heteroscedasticity, in the data used. Results obtained show that road distance and manufacturing industries are significant Geographic determinants of import Cargo distribution at the study Port. It is therefore important to lake the two variables into account in any policy or planning exercise at Port Harcourt Port
Vulnerability assessment of groundwater to contamination using drastic method: Study in Ngemplak, Ngaglik and Sleman Districts of Sleman Regency, Yogyakarta Special Province
No full textThis research is based on the assumption that the physical environ-ment may provide some degree of protection to groundwater against the natural and human impacts, especially with regard to contamination entering subsurface environment. Study on groundwater vulnerability to contamination .become important. It can be used as a valuable planning tool to overcome the problem of groundwater quality due to uncontrolled land development and undesirable activities. The aims of this study are : 1) to study the distribution of DRASTIC parameters, which are depth to water table, rainfall, aquifer media, soil media, topography, impact of vadose zone, and conductivity; 2) to analyze the vulnerability of groundwater to contaminationThe stua5, was performed by weighting and rating method of DRASTIC parameters. The degree of groundwater vulnerability to contamination is depicted in DRASTIC Index. DRASTIC Index is determined by overall sum of all multiplication between score and weight number ofeach parameter. Data manipulation and data analysis were all performed using Geographic Information System (Arc/View version 3.2). The vulnerability map of groundwater to contamination has been generated using overlay operation of DRASTIC parameters.The result showed that DRASTIC index varies between 73 to 172 intervals. Hence, the indexes were categorized into five level of groundwater vulnerability, namely invulnerable (73-92), low vulnerable (93-112), moderate vulnerable (113-132), high vulnerable (133-152) and very high vulnerable (153-172). It is found that more than 50 % of the study area is covered by high and very high vulnerability of groundwater to contamination. The vulnerability level and its area as follows : vo• high 92974.63 ha or 28.18%), high (7049.86 ha or 66.79 %), moderate (529.90 ha or 5.02 %). low (0.148 ha or 0.0014 %) and invulnerable (0.003 ha or 0.0003 %)
The influences of natural environment upon the evolution of sands dunes in tropical environment along Medinipur Coastalarea, India
No full textThis papaer assesses development of coastal sand dunes particulary along tropical coast. in depth study along on coastal dune morphology along Medinipur coastal track shows that sea levels remained very dynamic during the Holocene period. Evidence of Holocene sea level changes are found which were responsible for for the origin almost parallel distinct dune colonies through the geological past along this coastal track. The existence of tropical-monsoon climate with its seasonal phenomena plays an important the barrier property of dunes as well. in this paper possible biologcal interactions between sand mass of dunes and vegetation in different stages of development has also been dealt.
Technology Transfer In Rural Industries of Thailand: The Case of Dessert And Palm Tree Industries
No full textIn last decade, the small industrial sector has increasingly received attention from Thai policy makers. This study investigates the relationship between small industries and community in rural area in term of technology transfer. In the research area, knowledge and experience gathered from workplace as an employee and family businesses are the core resources to establish and run busineSses. Technically, technology transfer is divided into 2 characteristics; intra-enterprise and inter-enterprise. Intra-enterprise technology transfer comes from employers to employees, emphasizing production development. Beside, technology transfer of inter-enterprise has two directions. Firstly, direction points from the entrepreneur to material suppliers aiming to secure raw material quality. Secondly direction points from consumers to the entrepreneur aiming to put a great emphasis on product development, quality control and management
The Use Of Remote Sensing For Mangrove Ecosystem.Monitoring In Segara Anakan Central Ja Va
No full textThe paper deals with an actual condition of mangrove ecosystem in Segara Anakan Central Java by analysing them from remote sensing satellite image such as SPOT XS and Landsat 1M recorded in between 1981 and 2003. Digital and manual image analysis were applied Field checks were conducted in 199 3 and in 2005.The result show that three aspects of mangrove ecosystem can be studied from the remote sensing data, i.e. mangrove zonation, land cover changes and mangrove physical ecosystem changes. In mangrove zonation, it showed that three to four zones in mangrove forest zonation can be identified by satellite digital data analysis, especially in accretion areas. Mangrove of these areas actually suffers from human pressures, mainly for fishery and agriculture activities, and environmental changes. Lagoon morphometric decreased considerably and its influenced the existence of the mangroves. Mangrove extend in Segara Anakan, the mangrove forest covers 8600ha in 1987 and 7500ha in 1998, and in 2008 it decreased considerably. The lagoon of Segara Anakan undergoes to be disappeared by sedimentation processes from its hinterland In consequence mangrove ecosystem in the region is in dangerous conditio
THE ENVIRONMENTAL IMPACT OF NATURE BASED TOURISM IN GUNUNG MERAPI NATIONAL PARK
No full textThe goal of this research is to find out some impacts of tourism activities tothe environmental mainly to the biotic and non-biotic components. The researchalso focuses in finding out importance and performance of the products offered-byGunung Merapi National Park to the tourists. This research is done in fourlocations, consisted of the undisturbed location for controlling (Plawangan) andthe disturbed locations caused by the tourists, which are Kalikuning, Tlogonirmoloand Tlogomuncar. The result shows that the impClcts of tourist activities in somelocations show that the number of .microbial in the controlling location-is thehighest (54.56 cfu/gram) compared with others location. The impact to the numberof actin0mycetes in the controlling location is 32.84 cfu/gram, which is the highest.The infiltration rate with the model Horton in the controlling location is higher(0.983 cm/min) than the infiltration rates of the others. The voice frequencydescribes crowd level that at the controlling location has the lowest voicefrequency (10.15 dB). Some kinds of tree destruction as the impact of touristactivities show that the destructions happen mostly in Tlogomuncar, followed withKalikuning and Tlogonirmo 10. The most severe destruction of all locations isvandalism, and then scratch, spike prickling, branch breaking, and waste burning.Ihe importance and .performance of the products of the tourism objects offereddescribe that the attractions and tourism facilities like waterfall, musholla, shelter,dustbin, and observer tower have a considerable perception and goodperformance. However, some other facilities/attractions such as operational office,security center, gate, health clinique and bridge are not very important and not ina good condition
WEB-BASED SPATIAL INFORMATION SYSTEM TO SUPPORT COLLABORATIVE LAHARS DISASTER MANAGEMENT
Get PDFAfter the 2010 eruption of Merapi, some areas at Sleman Regency experienced with laharsdisaster. Many agencies have their own responsibility to overcome the problems incollaborative work. Nevertheless, it is lack of spatial/GIS data support on their decisionmaking as well as on their communications. The main objective of this research was todevelop spatial information system to support collaborative lahars disaster managementespecially for response and recovery phase of the impact on infrastructures at SlemanRegency. Questionnaires and semi-structured interviews were used to investigate their needof the spatial data and the data availability. Basically respondents agreed that spatial datais important in their communication and decision making support. Specifically, theapplication is utilized with specific spatial analysis tools to support decision makingprocesses. The users’ evaluation of the prototype resulted that almost all of respondents givea good mark to the system
INITIATION OF THE DESA TANGGUH BENCANA THROUGH STIMULUS-RESPONSE METHOD
Get PDFThe model of “desa tangguh bencana” (disaster resilient village) has to be initiated throughstimulus program. Social values existed in local community are basic capital in establishingdisaster resilient village. Mapping the site properties and characteristics is an essential stepto capture the community’s level of vulnerability and capacity. Establishment of “desatangguh bencana” is one of methods to involve local community in community based disasterrisk reduction (CBDRR). The initiation of disaster resilient in Pagubugan Kulon was donethrough stimulus-response method to introduce safe and resilient culture. Building up thegood understanding of disasters becomes one important way to rise up the communitypreparedness. The community response in Pagubugan Kulon to the disaster stimuli is theestablishment of “desa tangguh bencana pratama”