Forum Geografi
Not a member yet
326 research outputs found
Sort by
Monitoring Land Cover Changes in the Disaster-Prone Area: A Case Study of Cangkringan Sub-District, the Flanks of Mount Merapi, Indonesia
Full text linkVolcanic eruption is one of the natural factors that affect land cover changes. This study aimed to monitor land cover changes using a remote sensing approach in Cangkringan Sub-district, Yogyakarta, Indonesia, one of the areas most vulnerable to Mount Merapi eruption. Three satellite images, dating from 2001, 2006 and 2011, were used as main data for land cover classification based on a supervised classification approach. The land cover detection analysis was undertaken by overlaying the classification results from those images. The results show that the dominant land cover class is annual crops, covering 40% of the study area, while the remaining 60% consists of forest cover types, dryland farming, paddy fields, settlements, and bare land. The forests were distributed in the north, and the annual crops in the middle of the study area, while the villages and the rice fields were generally located in the south. In the 2001–2011 period, forests were the most increased land cover type, while annual crops decreased the most, as a result of the eruption of Mount Merapi in 2010. Such data and information are important for the local government or related institutions to formulate Detailed Spatial Plans (RDTR) in the Disaster-Prone Areas (KRB)
Spreading of Groundwater Contamined by Leached in the Surrounding Area of Piyungan Landfill Bantul District, Yogyakarta Province
Full text linkThe objectives of this research are: (1) to study the characteristics of aquifer, distribution and chemical types of groundwater in the research area; (2) to measure the consentration of major elements (HC03-, Cl-, S042-, Ca2+, Mg2+, Na+, K+) and minor elements (S2-, NH4+) as indicators of leached contamination in the groundwater; and (3) to establish the spreading of contamined groundwater by leached. The grid sampling method was applied in this research. The grid dimension is 1 cm x 1 cm measured in the 1:25000 scale of Indonesian Topographic Map. The groundwater samples were taken randomly within the grid. Not the whole study area covered by the map was grided but only the surrounding area of Piyungan Landfill and the area lower than Piyungan landfill were grided. The groundwater samples were taken during the rainy season because during the rainy season there were more leached produced from Piyungan Landfill. The groundwater samples were examined their physical and chemical qualities using the legal standard quality in Yogyakarta Province. Spatial analysis using maps and graphics were applied to examine the spreading of contimined groundwater by leached. The spreading of unconfined groundwater in the study area was not equal distributed but it seems to be controlled by the landforms. There were an increasing elements content of Cl-, Ca2+, Mg2+ and HCO3-, as well as dissolved oxygen, NO3- and S2- in the groundwater contamined by leached. The zonation of the spreading of groundwater contamined by leached was categorized into three class, i.e., central (location of landfill, well number 1 0), transisional (well number: 11, 12, 13, 15), and primary (well number: 8, 14, 16, 17, 25, 26) zones. The zonation of groundwater matched with the analysis of groundwater quality by the distance from the Piyungan Landfill
Sustainable Tourism Development: the Adaptation and Resilience of the Rural Communities in (the Tourist Villages of) Karimunjawa, Central Java
Full text linkFrom 2009 to 2015, the growth of tourism in the tourist villages (desa wisata) of Karimunjawa underwent rapid progress. However, the level of poverty in Karimunjawa remained high. Nevertheless, the involvement of rural people in the sustainable development of tourism has received only limited discussion. Therefore, this article discusses the rural communities’ adaptation and resilience in Karimunjawa with the support of sustainable development planning in tourist villages. It covers the background of sustainable development, the elements of the communities’ adaptive capacity and resilience, and the role of the regional government. Empirical evidence of variations in the capacity to respond to changes of socioeconomic and ecological environments due to tourism development is presented. In addition, a case study is used in this article to describe how the people learned from their experience, knowledge, and past efforts. To obtain the necessary information, in-depth interviews were conducted with a number of key informants in the tourist villages of Karimunjawa, which were selected via purposive and snowball sampling. The results of the research show that social resilience will increase among those communities that are capable of accessing flexible social networks. These social networks are practical tools that open up the dissemination of new information and knowledge. This is a key element for a stronger process of transformation. Furthermore, communities that have capital and financial access as well as skills will also be capable of adaptation to the transformation process
Photogrammetry-based Texture Analysis of a Volcaniclastic Outcrop-peel: Low-cost Alternative to TLS and Automation Potentialities using Haar Wavelet and Spatial-Analysis Algorithms
Full text linkNumerous progress has been made in the field of applied photogrammetry in the last decade, including the usage of close-range photogrammetry as a mean of conservation and record of outcrops. In the present contribution, we use the SfM-MVS method combined with a wavelet decomposition analysis of the surface, in order to relate it to morphological and surface roughness data. The results demonstrated that wavelet decomposition and RMS could provide a rapid insight on the location of coarser materials and individual outliers, while arithmetic surface roughness were more useful to detect units or layers that are similar on the outcrop. The method also emphasizes the fact that the automation of the process does not allows clear distinction between any artefact crack or surface change and that human supervision is still essential despite the original goal of automating the outcrop surface analysis
Inclusive Development through Providing Vertical Housing for Low Income Family in Yogyakarta Urban Areas
Full text linkInclusive development is meant to accommodate the marginalised people, most of whom are the poor with the problem of fulfilling their need for housing. The government has tried hard to meet the need of housing by constructing rusunawa. This paper is aimed at describing the provision and uses of rusunawa, both in cities and peri-urban area by studying the cases in the City of Yogyakarta, Sleman Regency, and Bantul Regency. The study was conducted by doing observation and both structured and in-depth interviews. The research results show that rusunawa were viewed as one solution to help a low-income family in fulfilling their need for housing. In some cases in the City of Yogyakarta, rusunawa plays an essential role in preventing the settlement along both sides of rivers from becoming slum areas. Rusunawa in both Regencies of Sleman and Bantul is located near the city, so it is easy for the settlers to get to their workplace. The construction of rusunawa has also paid attention to the disabled by providing exceptional facilities. The same case is providing a playground for children and facilities for early education for young kids. However, there have not been special facilities for the elderly and pregnant women
The Effectiveness of Mahogany (Swietenia macrophylla) Plantation Forest on Controlling Erosion and Runoff
Full text linkEcosystem of forest has been considered the most effective measures in controlling soil erosion and runoff. However, man-made forest or plantation forest is frequently disturbed that causing susceptible to land degradation, especially by erosion. The role of forest to protect soil from erosion forces is not only played by individual forest stand itself but also its community. Composition of vegetation community always change dynamically depending on the forest management system applied and the age of plant. To determine the effectiveness of mahogany forest plantation during its growth on controlling soil erosion and runoff, a study was conducted at mahogany plantation forest area of Gundih district. Three different ages of mahogany (1, 4, and 8 year old) were selected as observation plots. Soil erosion and runoff measurements were carried out on a small plot procedure of 4m x 22.1 m size. Whereas, observations on main tree of mahogany characteristics and its undergrowth vegetation’s were also accomplished within this area. The results indicated that the number and kind (species) of vegetation community of mahogany changed dynamically and tended to decrease as the main forest stand became older. The older mahogany produced less both soil erosion and surface runoff. Soil erosion level on vegetation community of mahogany plantation, during two months observations, decreases as much as 39.3%, 9.8%, and 5.2% respectively for1, 4, and 8 year old of mahogany comparing to bare land (control plot) of 112.6 kg/plot (12.7 ton/ha). Additionally, surface runoff lowered at the mahogany age of 4 and 8 year as high as 33 %and 52% respectively comparing to control one, but surface runoff at the mahogany of 1 year old had no different from the control one. The main role of this condition was played by thick litter at 8 year old of mahogany, and by creeping grass, and other shrub at 4 year old of mahogany
Analysis of Susceptance Storey Level Damage of Coral Reefs in Territorial Water of Archipelago in Karimunjawa by Using Geographical Information System
Full text linkThis research aim to determine susceptance storey level damage of coral reefs in Territorial Water of Archipelago of Karimunjawa. Method which used in this research is special data analysis which in the form of data of sekunder by using Geographical Information System. Pursuant to analysis known that research area there are six especial stressor which menace coral reefs for example: Port, Airport, Center Dive, Coastal Wisata, Resident, and Appliance Catch. Pursuant to spasial analysis which have can be determined that equal to 69.50% from entire coral reefs research area in a condition do not susceptance, namely there are in territorial water region of Island: Kembar, Parang, Kumbang, Katang, Nyamuk, Krakal Besar, Krakal Kecil, Geleang, Burung, Bengkoang, Menyawakan, Cemara Besar, Cemara Kecil, Sintok, Gundul, Cendikian, Genting, Seruni, and Sambangan. As for the rest equal to 30.50% enough natural rentan of damage, there are at territorial water of islands owning high resident activity storry level, namely around in Island: Kemujan, Karimunjawa, Menjangan Besar, and Menjangan Kecil
The Ready System of Clean Water for Population in Musuk District to Respon Dry Season
Full text linkThis research about ready system of clean water in District of Musuk, Sub-Province of Boyolali. This research aim to study how ready system of clean water, research area especially of dry season. That wish to know how much amount of resident drinking water consumption at area District of Musuk. The method of research in this research is survey method. The data which collected in this research consist of primary data result of interview by 150 responded (head of house hold) and perception in field. Secondary data an obtain from governmental institution, books, other resource person and reference related to this topic of research. Intake of sample done with area of random sampling, to know the target of research to description analyses and tabulation. The result of research indicate that ready system of clean water at dry season most relying on rainwater with accommodating the rainwater at pools, besides to overcome water of water supply of rain of society buy water of springs pass tank truck, small to partly use surface water and also of PDAM. Water consumption at mean dry season 48.47 liter/day/capita. But at high area (volcanic slope) its slimmer consumption in comparing plain area of Fluvial foot/feet of Volcano
The Survival Strategy of Households Affected by Tidal Floods: The Cases of Two Villages in the Pekalongan Coastal Area
Full text linkPekalongan is one of the coastal areas of Java Island that is affected by tidal floods. Tidal floods have various impacts on the social and economic conditions of the community, thus affecting their livelihoods. The purpose of this study was to examine the impact of a tidal flood, the socioeconomic characteristics of the community and the survival approach of coastal communities in Pekalongan. This study was conducted using a purposive sampling method in two villages in Pekalongan Regency, namely Jeruksari Village and Tegaldowo Village, because these two areas are affected by tidal floods. The study was conducted by using in-depth interviews and focus group discussions (FGDs), as well as structured interviews. The structured interview sample consisted of 60 respondents who were selected at random using quota sampling. The analysis was using qualitative-descriptive and quantitative methods. The gathered data were then presented in tables, diagrams and maps. The results showed that tidal floods resulted in physical, economic, sociocultural, health, educational, and environmental damages to the communities in both villages. The majority of the community members only have an elementary school education and primarily work as labourers. There is a difference in the amount of family income between the two villages, where the average family in Jeruksari Village has a higher income (IDR 3,465,300 per month) than the average family in Tegaldowo Village with total household income of about IDR 2 million per month. The most frequently used approach for survival in both villages is what is known as the survival strategy, i.e. a strategy to meet the needs of life at a minimum level to survive
Identification of Settlements Quality in Pekanbaru Slums
Full text linkOne of human basic needs is housing with high competitive situation caused increasing need of housing, spatial restriction, and economics factors. These influence to decreasing of housing quality then consequence to slums settlement. Undistributed population at Pekanbaru shown at Tangkerang Utara, Teluk Leok, and Meranti Pendak where slums are growing up. The aim of this stucdy is identifying slums area in Tangkerang Utara, Teluk Leok, and Meranti Pandak with spatial, complexity, and environmental approach. Data collected as primary and secondary data. Then are 28 indicators to identified slums area and classified quality of settlements. Results of this study shown that Tangkerang Utara have Medium Quality with typology as slums at center city, Teluk Leok have Low Quality with typology as slums at river side, and Meranti Pandak have Medium Quality with slums at urban fringe. This study also found that slums in Pekanbaru have spatial associated with low housing quality, community with low economic capacity, high density of population and building, bad sanitation, susceptible of fire and natural hazard, weakness of spatial planning implementation, and insufficient ratio of environmental settlement infrastructure. In pekanbaru, slums growth as continuous process