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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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Farming Technology, Farmers Income and Livelihood Diversification in Kulon Progo Gunardo, RB
Forum Geografi Vol 13, No 1 (1999)
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Abstract

The objetive of this research were conducted in Kulon Progo Regency were to know how far utilization of farm technology (hand tracctor, tresher, benguk arver, and cassava rapier) will inreasing income farmer and works diversification on different topography and accesibility. The data included primary and secondary data. The primary data were collected from respondents by filling questionnaires, while the seondary data were collected from the governmental officer. Region samples are Lendah sub regency which low land plain area, Sentolo sub regency which hilly area, and Kalibawang  sub regency which mountain range area. Respondents sample was taken by snow ball sampling, who utilized of farm technology and they are 58 respondents from low land plain area, 38 respondents from hilly area, and 38 respondents from mountai range area. The data were processed by using computer, while hypothesis was tested by crosstab and hi quadrate to compare result of research in the three different topography areas. The result of the research shows that there are difference significant utilization of farm technology aording to the topography bakground. Hand tractors and tresher are much  utilized in the hilly areas, benguk carvers are much utilized in the low land plain areas, and cassava raspiers are much utilized in the mountain range areas. They aren’t difference signifiant the utilization of farm technology aording to accesibility. The low land plain areas and the hilly areas produce same activities, while the mountain range areas produce only four kind of same ativities. Diversification of works in the hilly areas absorbed a lot of manpower than those and the rest areas. Income generating from the utilization of farm technology in the hilly areas is more than that in the rest areas.
Analysis of Rainfall Intensity in Madiun Watershed, East Java Muttaqin, Muttaqin
Forum Geografi Vol 11, No 1 (1997)
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Abstract

The aim of the reasearch in the area of Madiun River Basin is to make and to analyze the Intensity Duration Curve (IDC) i.e. the curve describing graphically the relation between rainfall intensity and rainfall duration in a certain frequent period. Formulation used in the research was Talbot Formula and Ishiguro’s. In the drafting of Intensity Duration Curve it was used specific coefficient i.e by using the rainfall data of fifteen and sixty duration for both applied formulations. The IDC recorded has not mean difference because in both formulation was used coefficient of the same value. The pattern of the rainfall intensity occured directed toward Nort East. It was happened because of the moving clouds directed toward that course. Depression occured at the backward of Mount Lawu, exactly toward East.
Perkembangan Daerah Perkotaan Ditinjau dari Aspek Hidrologi Sudarmadji, S
Forum Geografi Vol 9, No 1 (1995)
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Abstract

Perkembangan daerah kota secara fisik ditandai dengan meluasnya wilayah kota dan bertambahnya daerah permukiman baru di sekitarnya. Di sisi lain perkembangan kota menyebabkan dampak negatif pada kondisi hidrologi, baik yang kuantitas maupun kualitas. Perluaasan daerah kota sering menyebabkan banjir dan genangan di daerah kota itu sendiri, yang disebabkan oleh meningkatnya koefisien aliran serta tidak mempunyai saluran drainase untuk menampung limpasan yang terjadi. Perkembangan kota menyebabkan kebutuhan air meningkat untuk penyediaan air di daerah kota tersebut. Air yang digunakan berasal dari berbagai sumber air, baik air permukaan maupun airtanah, yang sifatnya terbatas. Aktivitas penduduk kota menghasilkan limbah yang dibuang ke dalam lingkungan, yang dapat menemari air permukaan maupun airtanah. Di pihak lain airtanah masih merupakan sumber yang utama untuk penyediaan air di daerah kota. Perkembangan daerah kota dapat mempengaruhi kondisi hidrologi baik kuantitas dan kualitasnya, yang hal ini dapat dijadikan pertimbangan dalam perkembangan dan pengembangan kota.
Potential Economic Losses Due to Tidal Inundation and Flood at Semarang City Suhelmi, Ifan R; Fahrudin, Achmad; Triwibowo, Ferdinand Hariyanto
Forum Geografi Vol 28, No 2 (2014)
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Abstract

Coastal city of Semarang is susceptible to the impact of coastal hazard due to its flat topographic condition. Various environmental problems are faced by Semarang involve tidal inundation, land subsidence, and floods during rainy season. This study was conducted to examine the potential economic losses caused by the sea level rise phenomenon. Distribution of inundated area mapped using Digital Elevation Model and Land Subsidence data. The Scenarios of International Panel on Climate Change (2007) sea level rises used to build a model of inundated area that notes by 2030 the rise of sea level rise at 13.4 cm. The inundated map was overlayed with landuse map to calculate the potential economic losses. The results show that the inundated area that occurred in 2030 was 1,718.2 ha with the potential economic losses Rp. 6,130 trillion. With the land subsidence scenario that happen at the area, inundated area increased to 5,171.3 ha with the eonomic potential loss about Rp. 28,724 trillion.
Land Tenure and Farmers Income Distribution (Case Temon and Keduang Watershed) Cahyono, S Andi; Haryanti, Nana
Forum Geografi Vol 16, No 2 (2002)
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Abstract

Land authority and imbalance of income distribution are always be an interesting issue for an importance role of land in society. It is interesting and necessary to find out how contribution of agricultural sector to farmer income and what effect of land authority imbalance to income distribution. This research was conducted at Temon and Keduang sub watershed. Survey method was adapted to collect the field data. Afterward, the collected data was analyzed quantitatively. The result indicated that the contribution of agricultural sector to farmer income at Temon sub watershed (69.39%) was hhigher than at Keduang sub watershed (59.11%). This showed that narrow in land authority will be increasing the contribution of agricultural sector to total income. It related to diversify efforts of land using. Imbalance of land authority not always affected the income imbalance, caused by development of non agricultural sector. Land access only was unfeasible to be an indicator of farmers household income level without considering the biophysics condition and non agricultural sector growth development.
Deposition Model of Point Bar Sand of Ancient Bengawan Solo as Regional Groundwater Reservoir in Ngloram - Cepu, Central Java Blora Yohanes, Moch.
Forum Geografi Vol 13, No 2 (1999)
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Abstract

While the geological study of sedimentary sand point bar of river is scientifically attractive, economically sedimentary sand is a material for the building. The sedimentary sand point frequency contains metal and nonmetal prescripitation that has a highly economical value. It also functions as a reservoir of good rock water, because it has  good porosity and permeability. The sedimentary sand point bar of Bengawan Solo that has been for 600.000 years ago in Ngloram-epu, has the thickness approximately around 5 – 25 m, grown horisontally around 5 – 7 km, and located  > 50 km2 which covers Ngloram-Wado-Kedungtuban. The sandy rock functioned as a good groundwater reservoir rock. The sand point bar in Bengawan Solo is precipitated on the stairs of Bengawan Solo that is situated on the clay rock having tongue formation. The water of reservoir point bar is expected to fulfill the needs of 100.000 inhabitants in Cepu and the cities around.
The Distribution of Rural Settlement Environmental Quality (Case at Bantul, DIY) Ritohardoyo, Su
Forum Geografi Vol 11, No 2 (1997)
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Abstract

The housing environment problem is the inreased population and housing density  in certain areas, as a consequence of the high population growth rate. This situation has brought about the unavailability of the existing public facilities. Such as the evironmental problem is also faced by Bantul regency. Starting from those stated environment problems, this study has in phased its general objectives on to comprehend the variation of housing environmental quality within various topographical, and to comprehend environment factors influencing the housing environmental quality within various topographial background.this study employs so-called sampling technique. Area sampling is carried out aording to topographical condition. Ten villages are randomly selected representing the sampling areas. The number of respondent is 300 households, selected proportionally based on the area stratification. Primary data is collected direct communication with informants are key persons. Data analysis employed simple correlation technique, multiple regression analysis, and one way variance analysis. The study reveals that differences in topographical characteristics are strongly associated with the differences in the quality of housing environment. The level of village development is also the main variable determining the quality of housing environment. A significant different of housing environment quality both among various topographical zones and various level of village development is reported. The achievement of programs oriented to village environment improvement is varying according to the distribution of village on the topographical zone. A greater success is commonly achieved by villages located in the upland and low land than those in the hilly areas. The social-economic condition of the dwellers is determining the quality of housing environment. Nevertheless, differences in the contribution of various variables to housing environment are encountered. In the whole areas, whether it is lowland, hilly or uplands areas, the family inome to be the first important facctor determining the housing environment quality.
Identification of Environment Chase in Surround of Sermo Reservoir; and the Influence Possibility for Function and at the Age of Reservoi Sudarmadji, Sudarmadji
Forum Geografi Vol 16, No 1 (2002)
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Abstract

Sermo reservoir is the only one belongs to Yogyakarta Special Province; it is relatively a new reservoir with the area of 1.9 kilometer square and its capacity of 25 million cubic meter: It started to operate since 1996 as flood control, irigation, water supply, tourism and fishery purposes. As a reservoir it could be considered to be a manmade lake, as its condition nearly similar to a lake. Since it operated (even during construction period) there were some significant environmental changes within the reservoir and in the area around the reservoir due to the human activities. These changes could threat the sustainability of the reservoir itselfThis research aims to identiflr the human activities living around the reservoir and visitors coming to the area, and to evaluate the potensial of the activities to produce wastes which is discharging in into the reservoir; which may threat the sustainability of the reservoir: The observatorium in the field has been conducted in the area of the reservoir and its sorrounding. I t was firund fiom the observation that activities o f fishery using net (karamba), tourism altogether with its facilities, land use around the reservoir for agriculture purposes, mining of class C ore, have given a lot of contribution to wastes (liquid and solids) and sediments into the reservoir: Those activities may cause water quality of the reservoir lo decrease as well as reducing the reservoir depth. Those situation was observed in the northern and north western parts of the reservoir Water quality degradation of the reservoir may threat reservoir as source of domestic water supply, while the sedimentation may reduce the life time of the reservoir The fishery and tourism activities was estimated as a main cause of water quality degradation, beside agricultural and domestic wastes originated from sattlement area around the reservoir: Sediments coming into the reservoir are derived fiom transported and movement of materials from land slide occuring around the reservoir; due to distruction of land in constructing the relatively new ring-road close to the shore line of the reservoir: Of course, the sediment is also coming from rivers enteringdie reservoir. Sermo reservoir is a relatively young reservoir; the early observation of environmental changes of the reservoir could hopely be used as indicator to study ecological changes of the area within and around of the reservoir; and could be used as a comparison to other reservoirs, as well as basic environmental management of the reservoir and its surrounding.
Sustainable Landuse Model at Upper Cikapundung River – North Bandung Darsiharjo, Darsiharjo
Forum Geografi Vol 18, No 1 (2004)
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Abstract

Land use in upper catchment of Cikapundung progressively do not in control, so that many land use disagree with required condition. The objectives of the research were to: 1) evaluating of existing land use suitability with to its land suitability; and 2) compiling simulation land use model which have been formulated to study the expense of conservation, beneficial crop type and conservation action alternative. In this research made three submodel (erosion submodel use USLE and Arsyad, runoff submodel use Bransby and Williams, and social economic submodel use B/C ratio and NPV); and than integrated to become one land use model in upper catchment by using computer program package “Poersim Version 2.5c”. The model is simulation by considering aspect land suitability, is then obtained by form land use sustainable. Land use in Cikapundung upper catchment equal to 70,52% disagree with land condition. The rate of occured erosion in dry land, pine forest and plantation of quinine have is abysmal of permissible erosion, while in natural forest, rice field, and grass land still is normal. Run off coefficient from all region per year go up equal to 0,3878%. And B/C dry land equal to 3,33. To maintain thickness of land and reducing runoff coefficient but admiting of to support life  farmer, minimum 10% from rest of obtained production in using to defray activity of conservation. Crop vegetable type which still profit is potato, chickpea, and pepper so long as minimizing 5% from rest of obtained production to be used for the activity of conservation, appropriate action conservation type is credit terrace because can be done step by step every process farm so that farm can be exploited on an sustainable.
Soil Sequence at Western Slope of Lawu Volcano Jamulya, Jamulya
Forum Geografi Vol 14, No 1 (2000)
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Abstract

The objectives of this  study was sto know the soil sequence according to topographic position on west part of Lawu volcano. Interpretation of topographic map and landsat image, making topographic cross section from upper slope, lower slope to fluvio volcanic plain were carried out for reference the location of soil profile morphological description. Soil morphological description in representative soil profile on every landscape unit. Taking soil samples for analysing physical and chemical properties to know soil development. The result indicated  that go down to the slope, from upper slope, lower slope to fluvio volcanic plain, there were 4 soil landscape or 4 soil great group i.e. Melamudands (Andosol), Eutrudepts (Latosol), Ferrudalfs (Mediteran), and Udifluvents (Alluvial).

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