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Forum Geografi
Published by Universitas Muhammadiyah Surakarta
ISSN : 08520682     EISSN : 24603945     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Forum Geografi, Indonesian Journal of Spatial and Regional Analysis (For. Geo) is an open access, peer-reviewed journal that will consider any original scientific article for expanding the field of geography. The journal publishes articles in both physical and human geography specialties of interest to spatial analysis and regional analysis in (but not limited) Indonesia by applying GIS and/or remote sensing techniques.
Arjuna Subject : -
Articles 1,205 Documents
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Orientation Use of Houses in Rural - Urban (A Case Study in the Eastern District of Kartasura, Sukoharjo 2001) Choirul Amin; Dilahur Dilahur; Muhammad Musiyam
Forum Geografi Vol 14, No 2 (2000)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v14i2.445

Abstract

Kartasura, seen formspace point of view, has special position because it is located in the corridor intersection between Semarang – Surakarta – Yogyakarta. Which becomes three central developing cities in central part of Java. This study is carried out in border town area in east part of Kartasura, which consist of four village – Pabelan, Gonilan, Gumpang, and Makamhaji. That are growing fast due to the effect of urban characteristic from Surakarta. The orientation phenomena of the use of house (OPR), the urban population that led to the commercial use is an interesting fact dealing with the influence of urban activities in those areas. The goal of this study is to know the kindsand the spread of the space of OPR population in east part of Kartasura and the factors, which is studied, is the houses in the research areas and the respondents are the owner of the houses. The sampling uses systematic proportional random sampling. The location of house sample (UMS, UNS, Islamic Boarding Shcool of Assalam), health services (RSIS and RSO), and commercial services (ALFA, UMS stores). All of them are located in Pabelan and Makamhaji. While industrial center consist of PT Tyfountex and small industries around it in Gumpang. Every central activities is divided into two cluster based on the relative distance from central activities (far and near), so as a whole there are four clusters which made up of two clusters in service center and the other in industrial center. Sample at every cluster is taken proportional about 2,5% based on homogenity consideration, whether the selecction of house sampling is taken randomly. The numbers of samples as a whole 175 respondents. The collected data are prensented in the form of frequency and cross table. Qualitative data analysis uses logical thought, deductive induccctive, analogy and comparison, while quantitative data analysis is done using frequency table analysis and cross table. The use of both analysis is sadapted with the data and goal of the study. The result of this  study shows that 1) OPR population in east part of Kartasura consist of three kinds, commercial OPR, non commercial, and combination. While the spreading space of the kind of OPR follows the concept of distance decay principle – the nearer relative distance of the house to the center of activities, the more commercial orientation the use of the house is. 2) External factor, which influence OPR, is the developing urban activities such industry, commerce, education, and health instrument. While the internal factor which influence to OPR is the size of land ownership.
Landslide Risk on the Farmland at the Arjuno Volcano Complex of East Java Nugroho Hari Purnomo; S Sutikno; S Sunarto; Luthfi Muta'ali
Forum Geografi Vol 27, No 1 (2013): July 2013
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v27i1.5081

Abstract

The purposes of the study are (1) studying the characteristics of the landslide hazard level, vulnerability, and capacity dealing with the seasonal plant farmland, and (2) developing the conceptual model disaster risk of landslide for the seasonal plant farmland at the stato volcano area. Sampling of the land factor was carried out in a purposive way and the sampling of the people was carried out accidentally. The analysis was conducted descriptively, parametric and non-parametric statistics, and spatial analysis of ecological map, land shape, slope, soil and land use. The findings showed that the extremely high landslide risk occurred at the cone shape of the incised volcano and the slope of the incised volcano. The economic vulnerability of one-seasonal crop farmland was about Rp. 8,879,310 ha/year-Rp. 44,036,061 ha/year. While, the socio-economic factor of the farmers was generally characterized by a transition into a periurban area. The conceptual model tated that the resources of seasonal plant farmland with the high risk of landslide can be cultivated with the acceptable risk if the vulnerability of agricultural commodity is low in economic value and the capacity of farmers cultivating it is high.
Study on Species Diversity and Stand Structure in Meru Betiri National Park Heru Dwi Riyanto; Agus Wuryanta
Forum Geografi Vol 29, No 1 (2015): July 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v29i1.791

Abstract

National parks are forest ecosystems that contain biotic and abiotic resources. Biodiversity is the data and information necessary to understand the degree of loss of species diversity and formulate a sustainable alternative of decline in these resources. The research objective is to study the reciprocal relationship between elevation and habitat of a species in an ecosystem. Research conducted at the National Park (TN) Meru Betiri. The results show that there are spatial variabilities of the species diversity based on the elevation in the study area. Elevation is inversely proportional to species diversity index, the higher the elevation, the species diversity index tends to decline, but the index of the importance of endemic species have increased. Group stand structure and species composition is influenced by the level of elevation with their own environment.
Coastal Inundation Adaptive Strategy in Semarang Coastal Area Ifan Ridlo Suhelmi; Hariyanto Triwibowo
Forum Geografi Vol 32, No 2 (2018): December 2018
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v32i2.5672

Abstract

Semarang Coastal has a high level of vulnerability to inundation, river flooding and tidal flooding. To solve the problems, a region has an adaptive capacity to the phenomena encountered. The aims of study to map the level of vulnerability and adaptive capacity of the region in facing the phenomenon and provide an alternative strategy in facing the impact of inundation in coastal areas. Based on capacity index and vulnerability index in 2015, most urban villages are located in quadrant 3 (58 villages), in quadrant 1 (36 villages) and quadrant 4 (5 villages). the results showed that most of villages located at coastal areas had a high vulnerability with low adaptive capacity. Considering spatial planning (RTRW) for 2030, population density changes, Semarang City Facility health facilities Plan in 2030, and the open areas as defined in the Semarang 2011-2030 spatial plan (RTRW) a major shift towards the quadrant 2 was observed, suggesting an increased capacity to encountered inundation susceptibility.
Providing of Spatial Wetland Information for Supporting National Development Aris Poniman; Nurwadjedi Nurwadjedi; Suwahyuono Suwahyuono
Forum Geografi Vol 20, No 2 (2006): December 2006
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v20i2.1812

Abstract

The wetland has a strategic role in national development. The potential uses of the wetland are varied such as for agriculture, fisheries, industries, and forestry. The intensive use of the wetland for agricultural development in Sumatera, Kalimantan, Sulawesi, and Papua through transmigration projects has been run since in 1973. Unfortunately, not all the projects were well developed, causing the social, economic, and physical environmental problems. These problems resulted in the negative impact for the life of the transmigration people. For that reason, the community empowerment for the unlucky transmigration people by handling the physical and non physical aspects is very important. This paper will describe the importance of providing spatial data and information biophysical wetland as an initial step in empowering people who live in the wetland resource.
The Influence of Spatial Urbanization to Regional Condition in Periurban Areas of Yogyakarta Andri Kurniawan; Bambang Sriyanto Eko Prakoso
Forum Geografi Vol 22, No 1 (2008): July 2008
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v22i1.4924

Abstract

It is interesting to study periurban areas because of its transitional characteristic. Periurban areas undergo dynamic changes as a result of spatial urbanization. This study is aimed at: (1) examining the development pattern of spatial urbanization in Yogyakarta and finding out the influential determinant factors; (2) examining the dynamics of land use changes in periurban areas and finding out the resultant impacts; (3) examining the pattern and development of services (infrastructures) and finding out the determinant factors supporting the development of services (infrastructures) in periurban areas; (4) examining the role of the development of periurban services (infrastructures) as magnetic forces for periurban development; and (5) making policies concerning periurban development and management in order to achieve optimal development and to balance the functions of urban and rural areas. The methods used in this research are secondary data analyses and aerial photo interpretation. This study applies secondary data analysis by comparing the data to find out the extent of the changes. Descriptive statistics, scaling, and discri-minant analysis are used as the analytical techniques to find out the determinant factors of urban growth in periurban areas. Spatially, urbanization in Yogyakarta periurban areas tends to move toward the western part (Ngestiharjo village), northern part (Catur Tunggal village) and eastern part (Banguntapan village). Besides centrifugal forces, the development of built land and urban characteristics in the western, northern and eastern parts are also influenced by the main roads (corridors) from Yogyakarta to Kaliurang, from Yogyakarta to Wates, and from Yogyakarta to Solo. The existence of the corridors prompts the functions of trade and services which, in turn, trigger the development of the surrounding housing complex. On the contrary, in the southern and south-east part of Yogyakarta the activities of service have not yet well-developed and neither have the new housing complex. The development of number and density population are variables determining urban development in Yogyakarta periurban areas. The dynamics of land use changes in Yogyakarta periurban areas are characterized by the decrease in agricultural land (6.46 % per year) and the increase in built land. The decrease in agricultural land reduces the sustainability of agricultural environment. Agricultural production can no longer satisfy periurban people’s needs for food. The different strength in interaction results in the difference in the facilities of service (infrastructure) between periurban areas. The periurban dynamics in Yogyakarta are also characterized by the increase in function and sustainability of services. The development of service (infrastructure) in Yogyakarta periurban areas have a lot of impacts especially those related to the increase in urban characteristics. In some parts of periurban areas, there is a relation between the increase in service provision and the development of urban characteristics.
Karakteristik Geografi Regional Indonesia: Analisis Peluang dan Tantangan terhadap Penggalian Sumber-Sumber Dasar Kawasan Indonesia Timur M Baiquni
Forum Geografi Vol 11, No 1 (1997)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v11i1.500

Abstract

Pada dasarnya pengembangan kawasan andalan yang diprioritaskan di Kawasan Timur Indonesia (KTI) bertumpu pada pendekatan yang berorientasi pada sumberdaya (resources based oriented) dan pendekatan yang berorientasi pada sumberdaya manusia (people centered approach). Karakteristik geografi regional kepulauan Indonesia ditandai dengan dominasi wilayah laut dan perairan pantai. Luas wilayah laut sekitar empat kali lipat dari luas daratan, yaitu 7,9 juta km2 dibanding 1,9 juta km2. Ini berarti wilayah laut mendominasi sekitar 81% dari luas wilayah Indonesia, dengan garis pantai sepanjang 81.000 km. Kepulauan Indonesia dapat dibagi menjadi tiga kelompok. Kelompok pertama adalah Jawa, Sumatra, dan Kalimantan serta pulau-pulau kecil di sekitar dangkalan Sunda di sekitar perairan Selat Malaka dan perairan Indo – Cina yang berasosiasi dengan Asia. Kelompok kedua adalah Irian Jaya (bagian dari Pulau New Guinea) dan kepulauan Aru di dangkalan Sahul yang berasosiasi dengan Australia. Kelompok ketiga adalah kelompok kepulauan Nusa Tenggara, Maluku, dan Sulawesi dengan dikelilingi perairan dalam atau palung laut. Sumber-sumber dasar pembangunan yang dimaksud dalam penelitian ini dapat dikelompokkan menjadi tiga, yaitu sumberdaya alam, manusia, dan budaya. Pengembangan KTI perlu mendapat perhatian karena masih adanya kesenjangan pembangunan yang terjadi. Kesenjangan ini dapat dilihat dari tiga indikator dasar yaitu luas geografis, distribusi kependudukan, dan konsentrasi industri Pulau Jawa dan Madura.
Typology, Dynamics, and Potential Disaster in The Coastal Area District Karst Gunungkidul Muh Aris Marfai; Ahmad Cahyadi; Dini Feti Anggraini
Forum Geografi Vol 27, No 2 (2013): December 2013
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v27i2.2373

Abstract

This study aims to determine the typology, dynamics and potential disasters  in the coastal area of Gunungkidul, Yogyakarta Special Province. The results showed that the typology formed in the coastal region is structurally shaped karst Gunungkidul coast, Wave Erotion Coast, marine deposition coast, coast erosion land, coast and sub-aerial deposition of man-made coastal typology. Coastal dynamics that occur in karst  Gunungkidul coastal areas affected by dominant geodinamic processes, hydrodynamic and antropodinamic. There are several potential disaster in the karst Gunungkidul coastal region, namely tsunami, rip currents, abrasion, and waves reflection.
Using 3D-Var Data Assimilation for Improving the Accuracy of Initial Condition of Weather Research and Forecasting (WRF) Model in Java Region (Case Study : 23 January 2015) Novvria Sagita; Rini Hidayati; Rahmat Hidayat; Indra Gustari; Fatkhuroyan Fatkhuroyan
Forum Geografi Vol 30, No 2 (2016): December 2016
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v30i2.2512

Abstract

Weather Research and Forecasting (WRF) is a numerical weather prediction model developed by various parties due to its open source, but the WRF has the disadvantage of low accuracy in weather prediction. One reason of low accuracy  of model is inaccuracy initial condition model to the actual atmospheric conditions. Techniques to improve the initial condition model is the observation data assimilation. In this study, we used three-dimensional variational (3D-Var) to perform data assimilation of some observation data. Observational data used in data assimilation are observation data from basic stations, non-basic stations, radiosonde data, and The Binary Universal Form for the Representation of meteorological data (BUFR) data from the National Centers for Environmental Prediction (NCEP) , and aggregate observation data from all stations. The aim of this study compares the effect of data assimilation with different data observation on January 23, 2015 at 00.00 UTC for Java island region. The results showed that changes root mean square error (RMSE) of surface temperature from 2° C to 1.7° C - 2.4° C, dew point from 2.1o C to 1.9o  C - 1.4o C, relative humidity from 16.1% to 3.5% - 14.5% after the data assimilation.
Pengembangan SIG berbasis Web Sebagai Decission Support System (DSS) untuk Manajemen Jaringan Jalan di Kabupaten Aceh Timur J Jumadi; M Muttaqin
Forum Geografi Vol 24, No 2 (2010): December 2010
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v24i2.5019

Abstract

This research aims to develop a web-based GIS that can be used as a decision support system in managing the road network in East Aceh district. In this case, MySQL is used as a spatial database management system and Scalable Vector Graphics (SVG) is used as the technology to visualize spatial data in web programming. Therefore, it is expected can make geo-database application that can be distributed widely to related user. Stages of development of the system used in this study refers to the waterfall model. The order of execution of the study is divided into five stages include: early stage research, web GIS design stage, the stage of data collection, web GIS development phase and implementation phase. Data used in this study include primary and secondary data. Primary data consists of spatial and attribute data of road network (lines) and bridges (points) taken through surveys with Global Positioning System (GPS). Secondary data used include base maps derived from maps of the Rupa Bumi Indonesia (RBI) 1:25.000 scale area of East Aceh Regency. The unit of analysis used was the Locational referencing system that is defining a road network using the “node” and “section”. The results of this study showed that implementation of the SVG generated by PHP is able to produce a superior display vector and dynamic so it is easy to analyze. These capabilities combined with MySQL capabilities in spatial analysis and queries on RDBMS database is able to produce applications that are capable of supporting the activities of decision-making in the management of roads and bridges.

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