Indonesian Journal of Geography
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Land Use Projection for Spatial Plan Consistency in Jabodetabek
Get PDFLand use changes in Greater Jakarta area are very dynamic because of the need for settlements and converting agricultural land. It indicates land use inconsistency regard to spatial plan that can cause land damage in the future. Land use which has potential inconsistency in the future are requires for land use control in this region. This study uses spatial analysis to look at the potential inconsistencies by comparing land use projection in the future in two scenarios that is with and without control by policies. Policies in this study are land suitability and forest allocation. The result shows that land use consistency with policies raise until 97,4 % but only 93.9 % without control by policies. Areas that could potentially have inconsistency in the future are Bogor, Bekasi, Tangerang and Jakarta North City for area which is directed as forest and buffer zones of cultivation
Landform Control On Settlement Distribution Pattern in Progo Delta, Indonesia
Get PDFLandform is part of the Earth ‘s surface whose characteristics affect resources and geomorphological hazard, and therefore, affect humans in determining their choices in building settlements. This research aims to : ( 1 ) analyze landforms control on settlement distribution pattern in abandoned Progo Delta, and ( 2 ) analyze the factors that influence humas in choicing their residental locations. Landform control on the settlement distribution was analyzed from produced geomorphological and settlement maps and overlay them. The influence factors were analyzed from the results of in-depth interviews conducted in each village in the study area. The results show that the settlement in the study area is distributed in a dispersed pattern, following the presence of abandoned delta’s natural levees. The influencing factors include flat topography that implies a good accessibility, soil fertility that defines land capability in sustaining their life, water resource availability, and security from disasters especially floods
Effects of Management Practices on Soil Nutrient Levels in Sabke Catchment Area, Nigeria
Get PDFIn Nigeria’s drylands, profitable crop production requires adequate soil fertility management. This study examines the effects of farmer-managed practices on soil fertility in Sabke catchment of the drylands. Seven sites under permanent cropland, fallow land, grassland, shrubland, orchard land, intercropping land and woodland distributed on four transects were selected across the catchment. At every site, five replicate soil samples were collected from 0-15cm (topsoil) and 20-30cm (subsoil) and analysed for C, N, P, Ca, Mg, K and Na. Higher topsoil values of most of the properties were observed under cropland and intercropping sites. The two cultivated plots receive annual applications of organic manure in addition to chemical fertilizer and crops residue retention while the other plots are not. Thus, improvement in soil organic matter and nutrients would be expected in soils of the area with high rate of application of manure and chemical fertilizer, and retention of crop residue
Spatial Distribution of Trace Elements in Rice Field at Prafi District Manokwari
Get PDFMapping spatial variability of trace elements in rice Ḁeld is necessary to obtain soil quality information to en-hance rice production. ἀis study was aimed to measure concentration and distribution of Zn, Cu, Fe, Pb, and Cd in two diᴀerent sites (SP1, SP2) of PraḀ rice Ḁeld in Manokwari West Papua. ἀe representative 26 soil samples were analysed for their available trace metal concentration (DTPA), soil pH, and C-organic and soil texture. ἀe result indicated that Fe toxicity and Zn deḀcient problems were encountered in both sites. Rice Ḁeld in SP2 was more deḀcient in Zn than SP1. Site with the highest trace elements (Zn, Fe, Cu, and Cd) concentration had low soil pH and high C-organic. Acidic soil has higher solubility of metals; while high C-organic could improve the formation of dissolve organic carbon-metal binding, hence it improving the trace metals concentration in soil solution
Urbanization and Condition of Urban Slums in India
Get PDFThe present paper attempted to study the urbanization in India and condition of urban slums in terms of water, sanitation, electricity, garbage collection and health care, and education which are supposed to be basic minimum needs for the slum dwellers. India is going through the process of rapid urbanization because of industrialization like other third world countries. The percent of urbanization increase from 27.8 percent in 2001 to 31.1 percent in 2011 census. The increase in the percentage of population in urban areas is because of natural growth, rural to urban migration and the reclassification of village and towns. The share of the slum population in the total urban population of the country was 18.3 percent in 2001 while in 2011 it was 17.4 percent. The condition of urban slums in India is to be improved so as to make them better for living
Groundwater Salinity Distribution in Sub-District Kedung, District Jepara
Get PDFThe groundwater salinity in Kedung Sub-district, near the coastal area, is the result of the salt water that comes into the aquifers and the salt water seepage from the surface. The broad groundwater salinity is because of the recent land condition that is resulted from the deposition in the ocean. The nature of the groundwater in-Sub-distric from all aquifers consists of 14% saline groundwater, 48% brackish groundwater and 38% fresh water. The number of community that has brackish until saline ground water property is 19.202 people, so that the domestic water need for the community is 1.344.378 liters/day. Such environmental condition makes the residents make some adaptation. The adaptation of the land use aspect is by making the western region as a fishponds region and the eastern one as a rice fields region. Adaptation in community activities is to fulfill the needs by working as farmers (on the rice fields, fish ponds or salt ponds) or as the fishermen. Adaptation is also made to minimize the threat of disasters, such as the manufacture of levees, weirs or dams and diversions to prevent the spread of tidal flooding
Mapping of Traffic-Related Air Pollution Using GIS Techniques in Ijebu-Ode, Nigeria
Get PDFSpatial and temporal characteristics of traffic related air pollutants (CO, NO, NO2 and SO2) in Ijebu-ode, Nigeria were determined using replicate portable gas detectors (Land Duo Multi Gas Monitor) at selected road junctions, motor garages and markets. Mapping of different concentration of air pollutants was carried out using kriging type of interpolation method in GIS environment. Concentration of CO ranges from 4.8 ppm at Erinlu/Molipa Roundabout to 137ppm on Sagamu/Ore Expressway. Concentrations of NO2 range from 100-662 ppb with overall average value (OAV) of 299.8 ppb, while concentration of nitrogen oxide (NO) ranges between 67-302 ppb and OAV of 166.23 ppb. SO2 had concentration ranging between 38-245 ppb and an OAV of 139.07 ppb all of which are above standard ambient air quality standards. AQI indicated very unhealthy air quality in most areas which calls for the need to establish and strengthen the health-based standard for air pollutants
Farmers Commitment in Maintaining Wetted land Ownership Status in Peri-Urban Area of Yogyakarta
Get PDFThe existance of wetted land in Peri-urban Yogyakarta can not separated from the farmer’s commitment. This research is aimed to analyze farmer’s commitment in maintaining wetted land ownership status in Peri-Urban Yogyakarta and to identify its influencing factors. This research is conducted in peri-urban area of Yogyakarta by taking some wettted land’s owners who are active in farming, as the respondents. The meaurement of farmer’s commitment indicators are done by likert scale. The result indicated that farmers in Peri-urban area of Yogyakarta have low commitment in maintaining wetted land ownership status. Low level of farmer’s commitment are reflected from the low commitment to prevent the desire to sell the wetted land, to rent out the wetted land for non-agricultural use and to change the wetted land for non-agricultural use. This research also indicated that the low commitment is also significantly influenced by wetted land price, wetted land location, and its social value