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Forum Geografi
ISSN : 08520682     EISSN : 24603945     DOI : -
Core Subject : Science,
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.
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Articles 16 Documents
Search results for , issue " Vol 16, No 2 (2002)" : 16 Documents clear
Regional Inventory Approach for Paddy Plantation Area Estimation at Yogyakarta Special Province Noorhadi, Noorhadi; Ritohardoyo, Su
Forum Geografi Vol 16, No 2 (2002)
Publisher : Forum Geografi

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Abstract

Generally agricultural data could be collected by several techniques, i.e. rural statistic, sensus, administrative by product, multiple frame sampling  surcey, and frame sampling survey regional inventory. However this research aim was stressed on applying of regional inventory for estimating of rice planting area. This research was carried out in Yogyakarta Special Region. Survey method was employed by data collecting from field observation of land cover on seleted area sample. Proportion of the land over was extrapolated for grasping every kind of land covers on population area. Several steps of research are land stratification, composting of frame sampling, segment sample extraction, field works, and data analysis. Digital Map of Rie Field Standard sacle 1:100.000 used for land stratifying, result three polygons are wetland arable, dry land arable, and highland arable. Based on the frame sampling and its extraction used Systemic Aligned Random Sampling, were selected 53 segment sample distributed in 32 sub districts. Data analysis was performed through desriptive technnique in which mathematically analysis was mmostly used. Result of the research indicates that the regional inventory approach is suitable enough for estimation of rice planting area. However several modifications need to be adapted to the region characteristic. The result of the estimatio shows that the rice planting area on the first period since land preparation up to harvest season (May 2002) is 23,694 ha. Generative phase of rice planting is dominant on the riice field. This phase indicates that the area prediction of rice harvest on July 2002 is about 10,028 ha. The acumulative area of rice harvest on period May – September 2002 is estimated about 22,269 ha. The result of this research finds out that the rice planting area on the second period (July 2002) is predicted about 12,780 ha. On this period, the area is dominated by the phase of rice harvest about 7,015 ha. Based on the rice planting area at phase generative on this period can be predicted that rice harvest area up to September 2002 is about 2,743.7 ha. The acumulative area of rie havest on period July up to the end of November 2002 is estimated about 5,764.87 ha. In generally, regional inventory approach is suitable for estimating for rice planting area.
Spatial Diffusion of Leather Industries (Case Study at Magetan District) Dilahur, Dilahur
Forum Geografi Vol 16, No 2 (2002)
Publisher : Forum Geografi

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Abstract

After the rise and the fall of the tides and the change of the activities as the phenomena which happen in the daily life of sociaety, the hange of spacing or distributionn of industrial businesses becomes one of the new phenomena. The objective of this research is to know the process of the diffusion from leather industry in Magetan Subdistrict. This research uses secondary data analysis and direct observation. The result of this research shows that the change (the rise and fall of the tides) in leather industry has producted the movement of distribution or spacing in which the center of the main production is declined and the new center may arise. In this movement, it seems that the existence of the specification on types of activity, like having similar leather, shoescraft, beltcraft, and sendalcraft become the serious phenomena. This kind of the change and its development is signed by the change of position from becoming employee to be new employer, having some employees that may become the employers at any time and so forth. The style of the diffusion which happen is the style of mixing diffusion in which the business on leather industry becomes wider reaching around the village while the original village (Kauman) is still as the center of industry, although it has so limited activities because the business is always declined.
Infrared Aerial Photograph Application for Prediction of Runoff Coefficient at Wuryantoro Catchment, Wonogiri Santoso, Sugiharto Budi
Forum Geografi Vol 16, No 2 (2002)
Publisher : Forum Geografi

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Abstract

This research was carried out in Wuryantoro Watershed, Wonogiri. The goal of this study is to examine the remote sensing technology capability to obtain the physical characteristics data of watershed in the prediction of runoff coefficient using cook method. The physical characteristics is topography (relief), landcover, water storage, and infiltration. The physical characteristis is interpreted on infrared aerial photography on scale 1 : 10.000 based on element of interpretation i.e. tone, texture, size, shape, pattern, site, and association. The result of the prediction is tested by comparing them with the data of field measurement result. The accuraccy of the result of aerial photo interpretation of physical characteristics of watershed can be obtained as follows 1) the accuracy of the interpretation of landuse 88,5%; 2) the accuracy of slope interpretation 87.67%. The accuracy of prediction of the runoff coeficient 86.9%.
The Use of Springs by PDAM for Regional Water Supply in Ungaran, Semarang District Priyana, Yuli; Sigit, Agus Anggoro
Forum Geografi Vol 16, No 2 (2002)
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Abstract

The study was carried out in Ungaran. The goals of this study are to know and to evaluate the potential spring to add drinking water of Ungaran population. This study uses observation and secondary data analysis. The collected data are meteorology data, the water production of Municipal waterworks, the quality and the quantity of springs, the number of population and the customers. The result of the study shows that there are eight springs with the total debit 157 liter/ second or 6739 m3/ day. The Municipal Waterworks uses 65 liter/ second or 5616 m3/ day with the leaking rate 7% or 5222,88 m3/ day and the rest is used for irrigation. The quality of spring is qualified for drinking water requirement. The need of drinking water for per capita of the population is 136.7 liter/ capita/ day. In 2003 the prediction of the number of consumers is about 20.745 persons, so the total need of drinking water is predicted about 2835.8 m3/ day. The total need of drinking water added with the leak water is 3032.36 m3/ day. The Municipal Waterworks fulfils the need of drinking water for the population especially for the consumers of Municipal Waterworks. However, if the number of customers is accounted based on the number of the population in the pipe sope (­+ 48246 persons), the Municipal Waterworks will not fulfil the need of drinking water for population, therefore it needs to add volume production of drinking water.
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.
Public Participation in Reforestation (Case at Gunungkidul Regency, Yogyakarta Special Province) Ritohardoyo, Su; Prakosa, B S
Forum Geografi Vol 16, No 2 (2002)
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Abstract

Popular participation is a determinant indicator of reforestation. The important of it is due to the fact, that the people who will take the conservation innovation, adopt the technology, and bear the impact of conservation. However, there are many cases indicate the failure of reforestation project because of low popular participation. In this regard, this research is conducted to expose spatially the people knowledge, perception, and participation on reforestation. This research is carried out in the Gunungkidul district employing survey method primary data is collected from 180 rspondents are households who as participant of reforestation project, and household who are classified as self sufficient. The respondent sample is selected on the basis of stratified random sampling, according to physiography and the existing of forestation programme of the area. Three villages sample selected in this research are 1) Tegalrejo, in the physiography of Baturagung Range; 2) Gedangrejo, in the physiography of Wonosari Plateau; 3) Banjarejo, in the physiography of Gunungsewu Mountain. The measurement of people knowledge, perception, and participation on reforestation is performed through Likert Scale technique. Data analysis makes use of tabulation statistic technique espeially t test, variance, and rank correlation.The result of research shows that most people gain the reforestation knowledge from Foresty Extension Service or RLKT, whereas the knowledge of the larger part of self sufficient household comes from village officers. Though the category of their degree of knowledge are high, however there are quiet different according to physiography area. This fact determines the level of popular participation in the perspective physiography unit. It means that the higher the degree of knowledge on reforestation leads to the higher the perception on forestation. Moreover, the different in physiography of the area, or participation in the project determines also the difference in perception. The degree of popular participation on self sufficient reforestation or reforestation project is high. Popular participation is varied to either physiography condition or among participant of reforestation project. Participation of participant of reforestation project is higher than participation of self sufficient group.  The difference in the involvement of every reforestation of ativities (planning, implementation, and the use of out come) is  a direct consequence of the different in physical as well as socio – economic condition of the community. Physical constraints of up land area, and low level of socio – economic condition, have stimulated popular participation on reforestation. In addition, the level of popular participation is very much influenced by knowledge on reforestation and perception on reforestation. This means that, the higher the knowledge of farmer on implementation and utilization of reforestation and the higher the farmer perception on reforestation programme, then the higher the level of farmer participation on reforestation in eah different physiography.
Mapping of Marine Area Boundary of Central Java Province using Differential GPS Survey Method Khakhim, Nurul; Dulbahri, Dulbahri; Widartono, Barandi Sapta
Forum Geografi Vol 16, No 2 (2002)
Publisher : Forum Geografi

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Abstract

The development of GPS (Global Positioning System) technology which is measuring position by satellite, has taken a great metodology aspect of position on surface of earth. The standard GPS measurement takes an absolute positioning. To develop the accurate abd precision, it is used the differential method. Differential GPS measurement can be much more accurate than standard GPs measurement, wherever the method uses one receiver as base station/ reference and the other receiver as field station in a same time. That could reduce and eliminate drifts and errors. The aim of research is use the differential method of GPS survey to map the ocean boundary of Central Java Province. Physical data which neede are base line and base point. Base line were taken from obsrvation of longtime Landsat TM image band 5th based o opinion that shore line are clear seems and easy to interpreted at 10.00 am according to Landsat satellite reording time and the lowest tide time as base line. Location of lowest tide were selected at conspicuous place, such as cape, dry shore, etc and measured base on the BPN (Badan Pertahanan Nasional) base/ reference point (orde 2 and 3) on the district, with GPS differential metod. Twelve miles distance from base line of ocean bounddary is belong to province and 1/3 of is belong to district. Characteristic of marine landform as cape, bay, estuaria, attended to international rules. Final report of the research were 1) oean boundary map of Center Java Province, 2) the location and base/ reference points (orde 2 and 3) that could be reference as a base point differential method.
Impact of Using Pendowo Liquid Organic Fertilizer Toward Land Potential at Jenar, Sragen, Central Java Kaeksi, Retno Woro
Forum Geografi Vol 16, No 2 (2002)
Publisher : Forum Geografi

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Abstract

The objectives of this research are to know the content of chemical elements found in waste of fluid organic in Jenar Banker in sub district of Jenar, Sragen and to know the influence of fluid organic fertilizer on the potency of area in Jenar. The collected data in this research are 1) topography, 2) geology, 3) geomorphology process, 4) area used, 5) horizon of the soil, 6) soil texture, 7) soil structure, 8) pH of the soil, 9) Nitrogen, 10) Phosphate, 11) Calium, 12) Calcium, 13) Magnesium, 14) the characteristic of physics and chemical elements in waste of Pendowo fluid organic fertilizer, and 15) the data dealing with interviewing to the civilization. For getting the area taken as the sample, this research uses stratified random sampling. While the analysis used in this study is descriptive method. The result of this research shows that 1) the main stone as the material for forming the land consists of sandstone, tuff of sand, limestone and clay (eaten for medicinal puposes); the relief is wave until making the hill, the plant consists of jati (teak), sonokeling, and the seasonal plants that exist in tegalan (dry field near the rie field but used for vegetables and other secondary crops), farm, and tebu (sugar cane) land. The land that has not influenced by the amine fertilizer, the characteristi of pH soil is base (more than 7,5). The structure of crumbs up to clump soil and texture of clay which have sand are relevant with jati (teak) and sonokeling growth. 2) the chemical elements of fluid organi fertilizer in Banker are not relevant with the chemical elements which are proposed by Paluraya Company. The element of nitrogen proposed is 4% while the result of the research shows 3,93%; 3,6%; 2,26%; 0,887%; 0,09%; 0,137%; 0,171%; 0,156%; 0,187%; 0,167%; 0,175%; and 0,108%. The pH of the fertilizer proposed is 5,5 – 6,5 while the finding of the research shows there are pH 4,65; pH 3,6; pH 4,5; and pH 5,41. The element of phosphate proposed is 0,3% while the result of the research shows that is less of 0,3%, they are 0,22%; 0,1%; 0,001%; 0,0053%; 0,0095%; 0,0077%; 0,0053%; 0,0047%; 0,0052%; 0,0055%; and 0,0072%. The element of calcium proposed is 1,2% but the finding of the analysis from 9 sample of calcium elements are less of 0,2%. 3) The potency of the land lower from time to time and it will become serious problems because there is a series changes of soil structure to be clay strong, the forming of complex cropping board of salt, pedal lay and pH soil become sour. By becoming sour, so the growth of the pants and the development of the plants in the area of the research will be destroyed more over, they will not grow anymore.
Impact of Using Pendowo Liquid Organic Fertilizer Toward Land Potential at Jenar, Sragen, Central Java Kaeksi, Retno Woro
Forum Geografi Vol 16, No 2 (2002)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1149.997 KB) | DOI: 10.23917/forgeo.v16i2.608

Abstract

The objectives of this research are to know the content of chemical elements found in waste of fluid organic in Jenar Banker in sub district of Jenar, Sragen and to know the influence of fluid organic fertilizer on the potency of area in Jenar. The collected data in this research are 1) topography, 2) geology, 3) geomorphology process, 4) area used, 5) horizon of the soil, 6) soil texture, 7) soil structure, 8) pH of the soil, 9) Nitrogen, 10) Phosphate, 11) Calium, 12) Calcium, 13) Magnesium, 14) the characteristic of physics and chemical elements in waste of Pendowo fluid organic fertilizer, and 15) the data dealing with interviewing to the civilization. For getting the area taken as the sample, this research uses stratified random sampling. While the analysis used in this study is descriptive method. The result of this research shows that 1) the main stone as the material for forming the land consists of sandstone, tuff of sand, limestone and clay (eaten for medicinal puposes); the relief is wave until making the hill, the plant consists of jati (teak), sonokeling, and the seasonal plants that exist in tegalan (dry field near the rie field but used for vegetables and other secondary crops), farm, and tebu (sugar cane) land. The land that has not influenced by the amine fertilizer, the characteristi of pH soil is base (more than 7,5). The structure of crumbs up to clump soil and texture of clay which have sand are relevant with jati (teak) and sonokeling growth. 2) the chemical elements of fluid organi fertilizer in Banker are not relevant with the chemical elements which are proposed by Paluraya Company. The element of nitrogen proposed is 4% while the result of the research shows 3,93%; 3,6%; 2,26%; 0,887%; 0,09%; 0,137%; 0,171%; 0,156%; 0,187%; 0,167%; 0,175%; and 0,108%. The pH of the fertilizer proposed is 5,5 – 6,5 while the finding of the research shows there are pH 4,65; pH 3,6; pH 4,5; and pH 5,41. The element of phosphate proposed is 0,3% while the result of the research shows that is less of 0,3%, they are 0,22%; 0,1%; 0,001%; 0,0053%; 0,0095%; 0,0077%; 0,0053%; 0,0047%; 0,0052%; 0,0055%; and 0,0072%. The element of calcium proposed is 1,2% but the finding of the analysis from 9 sample of calcium elements are less of 0,2%. 3) The potency of the land lower from time to time and it will become serious problems because there is a series changes of soil structure to be clay strong, the forming of complex cropping board of salt, pedal lay and pH soil become sour. By becoming sour, so the growth of the pants and the development of the plants in the area of the research will be destroyed more over, they will not grow anymore.
Regional Inventory Approach for Paddy Plantation Area Estimation at Yogyakarta Special Province Noorhadi, Noorhadi; Ritohardoyo, Su
Forum Geografi Vol 16, No 2 (2002)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1376.471 KB) | DOI: 10.23917/forgeo.v16i2.604

Abstract

Generally agricultural data could be collected by several techniques, i.e. rural statistic, sensus, administrative by product, multiple frame sampling  surcey, and frame sampling survey regional inventory. However this research aim was stressed on applying of regional inventory for estimating of rice planting area. This research was carried out in Yogyakarta Special Region. Survey method was employed by data collecting from field observation of land cover on seleted area sample. Proportion of the land over was extrapolated for grasping every kind of land covers on population area. Several steps of research are land stratification, composting of frame sampling, segment sample extraction, field works, and data analysis. Digital Map of Rie Field Standard sacle 1:100.000 used for land stratifying, result three polygons are wetland arable, dry land arable, and highland arable. Based on the frame sampling and its extraction used Systemic Aligned Random Sampling, were selected 53 segment sample distributed in 32 sub districts. Data analysis was performed through desriptive technnique in which mathematically analysis was mmostly used. Result of the research indicates that the regional inventory approach is suitable enough for estimation of rice planting area. However several modifications need to be adapted to the region characteristic. The result of the estimatio shows that the rice planting area on the first period since land preparation up to harvest season (May 2002) is 23,694 ha. Generative phase of rice planting is dominant on the riice field. This phase indicates that the area prediction of rice harvest on July 2002 is about 10,028 ha. The acumulative area of rice harvest on period May – September 2002 is estimated about 22,269 ha. The result of this research finds out that the rice planting area on the second period (July 2002) is predicted about 12,780 ha. On this period, the area is dominated by the phase of rice harvest about 7,015 ha. Based on the rice planting area at phase generative on this period can be predicted that rice harvest area up to September 2002 is about 2,743.7 ha. The acumulative area of rie havest on period July up to the end of November 2002 is estimated about 5,764.87 ha. In generally, regional inventory approach is suitable for estimating for rice planting area.

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