Sustainability (STPP) Theory, Practice and Policy

Subsurface Geology of Dambalo Village, Tomilito District, North Gorontalo Regency

2024-07-14T14:31:32+00:00

Dambalo Village, Tomilito District, North Gorontalo Regency, Gorontalo Province, is the designated research area listed in the administrative records. The main objectives of this research are to determine the surface and subsurface geology, understand the geological conditions of the research area, and analyze the cross-section of subsurface geological layers. The study employs the Schlumberger configuration geoelectric method to examine the subsurface geological cross-section. The researchers used a combination of geological surveys and subsurface data surveys, collecting data on surface geological features, outcrop observations, and resistivity measurements. The research area features a single landform unit, the denudational plain, and its stratigraphy includes a lithostratigraphic unit, Volcanic Breccia. The study area comprises four rock layers: the first layer is topsoil (passive clay), the second layer is sand, the third layer is breccia, and the fourth layer is sand. These conclusions are supported by geological and geoelectric data, demonstrating the effectiveness of integrating surface and subsurface surveys to provide a comprehensive understanding of the geological structure.

Identification of Urban Heat Island (UHI) in the City of Padang from 2019-2023 using Multitemporal Images Case Study: Padang City Area, West Sumatra

2024-07-14T14:46:51+00:00

The increase in population and urban development leads to higher energy consumption, which adversely affects environmental quality. The resulting impacts include a reduction in green open spaces, an increase in air pollution, and a rise in surface temperatures. This leads to the phenomenon known as the Urban Heat Island (UHI), where urban areas experience higher temperatures than their rural surroundings. This research aims to identify the UHI in Padang City using Landsat multitemporal data over a 5-year observation period from 2019 to 2023. The method involves converting digital numbers from Landsat 8 OLI/TIRS and Landsat 9 satellite images in the Thermal Band to generate Land Surface Temperature (LST) data. Subsequent processing is carried out in GIS software, such as QGIS or ArcGIS, to obtain the distribution of UHI. The research findings indicate fluctuations in land surface temperatures, with both increases and decreases observed over the study period. Each year witnesses an expansion of the UHI area, indicating worsening heat conditions in various regions of Padang City. The findings suggest that land surface temperatures will continue to rise with further urban expansion, highlighting the need for proactive measures. Therefore, it is crucial to develop and implement policies to control and mitigate the negative impacts of UHI in urban spatial planning.

Identification of Land Surface Temperature (LST) using Multitemporal Sentinel 3 Images from 2019-2023 Case Study: Padang City Area, West Sumatra

2024-07-14T14:48:09+00:00

Land Surface Temperature (LST) is widely utilized in current studies, particularly as an initial survey tool to assess geothermal activity in locations suspected to have geothermal sources. The research method involves geometric correction of Sentinel-3 imagery and conversion of temperature units from Fahrenheit (F) to Celsius (C) to ensure accuracy in temperature measurement. Image data processing from Sentinel-3, including thermal band analysis, is carried out to generate land surface temperature values. The field-measured temperatures are then compared to the land surface temperature data obtained through processing. The temperatures in the location, ranging from 23°C to 35°C, fall within the minimum geothermal temperature range, indicating potential geothermal activity. However, the LST values from the image data exhibit some differences compared to the on-site measurements. These discrepancies are categorized into classes I (23.7 – 24°C), II (24 – 24.3°C), and III (24.3 – 24.8°C), marked by red areas in the LST values. These discrepancies are attributed to various factors during image recording and processing, such as atmospheric interference and sensor calibration.

The Livability Level of Settlements in Kelurahan Dalam Bugis: An Analysis of Waste Management Aspects and Fire Protection Systems

2024-07-20T04:13:47+00:00

The dynamic development of an area significantly impacts people's living patterns, particularly regarding settlement issues. One major issue in settlement development is the livability of the settlement. This research aims to identify the distribution of settlement livability levels based on waste management conditions and fire protection systems. The study was conducted in Kelurahan Dalam Bugis, East Pontianak District, Pontianak City. A mixed methods approach was used in this research. Spatial quantitative data were analyzed and presented using Geographic Information Systems, while qualitative data were presented through data reduction, documentation, observation, and field interviews. The results showed that 16.4% of settlements are categorized as light slums (livable), 0.7% as moderate slums (quite livable), and 82.9% as severe slums (not livable). Livable settlements cover an area of 32.54 hectares (1,706 housing units). Moderately livable settlements cover an area of 1.33 hectares (97 housing units). Uninhabitable settlements cover an area of 159.13 hectares (2,290 housing units). Mitigation of critical health and safety aspects, such as fire hazards, requires increasing public awareness of waste management and providing adequate waste processing and fire-fighting facilities to prevent unwanted events.

Analysis of Coastal Line Changes in the Coastal Area of Soropia Sub-district

2024-07-20T04:17:12+00:00

The coastal environment is a dynamic area constantly undergoing changes due to various natural and anthropogenic factors. These changes can occur slowly or rapidly, influenced by elements such as wave action, tides, human activities, and climatic events. Monitoring these changes is essential for effective coastal management. This study aims to: (1) Analyze changes in coastlines in Soropia Sub-district between 2013 and 2022; and (2) Identify the factors influencing these changes. Landsat 8 imagery was used for this research, analyzed using the Overlay method to detect and quantify coastal changes over the nine-year period. The results indicate that four areas in Soropia Sub-district experienced significant coastline changes. The most substantial accretion occurred in Bajo Indah Village with a change of 130 meters, while the smallest accretion was observed in Toronipa Village with a change of 26 meters. Toronipa Village also experienced minor abrasion with a change of 0.3 meters. The factors influencing these changes include sediment accumulation, currents, wave height, and reclamation activities. This study provides valuable insights into coastal dynamics in Soropia Sub-district and highlights the importance of continuous monitoring and comprehensive analysis to inform future coastal management strategies.

Spatial Distribution Analysis of Soil Fertility Levels in Lembo Sub-District, North Konawe District

2024-07-20T04:19:53+00:00

Lembo Sub-district possesses extensive agricultural land with the potential to achieve sustainable food self-sufficiency through appropriate land use. This research aims to analyze soil fertility levels and determine the spatial distribution of soil fertility in Lembo Sub-district, North Konawe Regency. The parameters of this study include: C-organic, base saturation (KB), phosphorus pentoxide (P2O5), potassium oxide (K2O5), and cation exchange capacity (CEC). Materials used in this study include: SHP of Lembo Sub-district, soil type maps, and DEMNAS data. Data were obtained from observations at seven locations and laboratory analysis. The analysis methods used are spatial analysis and quantitative descriptive analysis. The results indicate that: the highest CEC value is 24.60 me/100g and the lowest is 19.80 me/100g; the highest base saturation is 48.70% and the lowest is 29.80%; the highest P2O5 value is 16.90 ppm and the lowest is 12.70 ppm. The highest K2O5 value is 25.10 me/100g and the lowest is 17.90 me/100g. The highest C-organic value is 1.90% and the lowest is 0.70%. Spatially, soil fertility across Lembo Sub-district is categorized as low (R).

Community Mitigation Climate Change at Household Waste Management

2024-07-22T11:36:41+00:00

Climate change is a concern in the world because of its threat to the environment. Household waste management can be done through mitigation to the community to reduce household waste, which causes methane gas emissions, climate change, and an increase in the volume of waste. This study aims to determine community mitigation in climate change in household waste management in Samarinda City and to determine community participation in implementing the climate village program in Samarinda City. This study is a descriptive study with a qualitative approach. The population in this study were all communities and ProKlim administrators in 5 research locations with purposive sampling and saturated sampling techniques with 35 informants. The sampling technique is interviews, observations, and documentation. The results of the study from 5 Proklims show that the community has carried out mitigation in their waste management to reduce carbon emissions and maintain their living environment. Forms of community mitigation include sorting and saving waste in waste banks in climate village groups. In addition, the community also reuses plastic waste that can be reused and makes compost from organic waste and recycles waste. Community participation in ProKlim is very supportive by participating in the activities, but some informants did not participate because ProKlim was not yet active.