bluuebunny/crossref_metadata_2025 huggingface dataset:
Factors Influencing Residential Settlement Preferences in the Ciptomulyo Urban Village Industrial Area
Authors: Eka Sari Kartika , Arifiany Almira Maulana Irtisa , Meidiana Christia
Published: March 2024

Housing is one of the fundamental human needs. In assembly this housing require, each person needs a put to dwell. When determining the location to reside, individuals have their own preferences. One of these residential preferences is to live in an industrial zone. Water pollution occurred in Ciptomulyo Sub-district due to a leather company disposing of its liquid waste into the river in 2014, and its impacts are still felt until now. Moreover, many residential houses are situated very close to industrial areas. The purpose of this research is to recognize the components that influence the residential preferences of the community. The method used for this study is multiple linear regression analysis. The research findings identified ten factors that influence the residential preferences of the community: government facilities, educational facilities, electricity infrastructure, distance to the industrial area, length of residence, occupation, land price affordability, and security. Residential preferences are dominated by proximity to public facilities and ignore environmental health and comfort factors, so that for the sustainability of residential areas, it is necessary to integrate with industrial areas to play an active role in maintaining the potency.
Utilization of Digital Applications to Support Smart Village in Cemani Village, Grogol District, Sukoharjo Regency
Authors: Puteri Eka Susilowati Anindya , Rachmawati Rini
Published: March 2024

Cemani Village is one of smart village pilot project in Sukoharjo Regency and included as 1000 Villages Location for Smart Village in Indonesia. Cemani Village government developed four digital applications to support smart village: Pasar Desa, Diapelinduk, digital signature, and digital studio. This study aims to identify the features, services, and utilization of digital application, and analyze the suitability between digital application features and services with user needs. This study used descriptive qualitative method. Primary data collecting with indepth interview and secondary data collecting with applications display and database documentation. The result shows that Diapelinduk integrated with digital signature, Pasar Desa, and digital studio are digital applications that developed to support Cemani Smart Village. Diapelinduk integrated with digital signature is used for making RT cover letter and studio digital is used for podcast production. Utilization of Pasar Desa as local e-commerce is unknown yet, but it is hoped will be a solution for community economy problems and increase village income. Diapelinduk integrated with digital signature and digital studio is considered suitable with the needs of Cemani Village community, while Pasar Desa cannot yet known for its suitability since it is currently actively used. Cemani Village has fulfilled five of six pillars of smart village, with smart governance gaining dominant achievement. Digital application utilization is an instrument to support the development of Cemani Smart Village.
Analysis of Lead (Pb) and Cadmium (Cd) heavy metals in cow’s milk in Central Java, Indonesia
Authors: Rachmawati Siti , Candraningtyas Callista Fabiola , Putra Chandra Digta Hanggara , Fadhilah Ririn Nur , Muazulfa Tsalatsun Ikhwa , Firmansyah Fathoni , Suryadi Iwan
Published: March 2024

The need for animal food is increasing because of its nutritional content. Foodstuffs needed to meet daily needs must be healthy and free from harmful substances, including heavy metals. Fresh cow’s milk is an animal-based food that is consumed by many people because it is very easy to find at an affordable price. This study aimed to determine the levels of heavy metals Pb (Lead) and Cd (Cadmium) contained in fresh cow’s milk and to find recommendations if they exceed a predetermined threshold. The method used is laboratory analysis of heavy metal content in fresh cow’s milk from a cattle farm in Boyolali Central Java. Analysis of Pb and Cd content was carried out by Atomic Absorption Spectroscopy (AAS). Data analysis was carried out by comparing the content of heavy metals in fresh cow’s milk with SNI 3141.1: 2011 concerning quality requirements for fresh cow’s milk and SNI 7387: 2009 concerning the maximum limit of heavy metal contamination in food. Laboratory test results on fresh cow’s milk had a heavy metal Pb content of 96.67 mg/kg and a heavy metal Cd content of 4.45 mg/kg. It is known that the maximum limit for heavy metal contamination in food is 0.02 mg/kg. It can be concluded that the heavy metal content in fresh cow’s milk has exceeded the existing quality standard threshold. Previous research revealed that the metal lead content in cow’s milk that has been processed is lower than in cow’s milk that has not been processed.
Land management without burning and corn productivity enhancement during long dry season in West Kalimantan, Indonesia
Authors: Hatta M , Widiastuti D P , Warman R , Haloho J D
Published: March 2024

In long dry season (El Nino), thousand hectares of agricultural land in Indonesia to experience drought, and sometimes wildfires occur naturally. Land management without burning and environmentally friendly agricultural cultivation needs to be done in the long dry season. It is not recommended to use crop residue that is burned on the land, since the residue can be composted into organic matter which later is returned to the agricultural land as organic fertilizer. Currently, about 40% farmers use local corn varieties. Corn farming lands in Indonesia are generally deficient in nitrogen. Consequently, drought tolerant new superior corn varieties complemented with right dose fertilizer based on plant needs, especially N fertilizer, are needed to increase corn productivity in the dry season. This research aimed to ascertain adaptive hybrid corn varieties and right N fertilizer rate on the growth and productivity of corn planted on the land without burning. The experimental design was Randomized Complete Block Design consisting of 2 factors. The first factor was corn varieties, namely Bima 19, Nasa 29, and JH 21; whereas, the second factor was N fertilizer rate, namely 64, 86.5, 109, and 131.5 kg ha-1. The combination of the two factors consisted of 12 treatments, which were repeated 3 times. The results showed that there was an interaction between the new high yielding varieties and the N fertilizer rate on corn productivity. Greater yields were performed in Bima 19 with N rate of 109 and 131.5 kg ha-1 and Nasa 29 with N rate of 131.5 kg ha-1 i.e., 8.45, 7.94, and 8.04 t ha-1, respectively. Bima 19 and Nasa 29 are drought tolerant high yielding corn varieties.
Trekking tourism in the ancient Bengawan Solo valley based on ecological preservation and safety risk management
Authors: Nugroho Purwanto Setyo , Winarto Yosafat
Published: March 2024

The Ancient Bengawan Solo Valley (Lembah Bengawan Solo Purba/LBSP), located in Wonogiri Regency, Central Java, Indonesia, has the potential to be developed for nature tourism. With its beautiful landscapes, unspoiled karst caves, and diverse culinary and cultural arts, the valley is becoming an increasingly popular destination for adventurous travelers and nature enthusiasts. However, to ensure a memorable and safe experience for visitors, and to maintain the sustainability of tourism activities, careful planning is essential. In this article, we explore the importance of safety risk assessment in the process of planning trekking routes for the Bengawan Solo Ancient Valley tour. Qualitative descriptive method is used in the discussion and analysis. The development of the Bengawan Solo Ancient Valley tourism trekking route needs to apply Safety Risk which is in line with the concept of environmental preservation
Sustainable development study of the post-disaster housing resettlement case in Yogyakarta Province, Indonesia case study: Nglepen Village and Pagerjurang Village
Authors: Setyonugroho Gregorius Agung , Maki Norio
Published: March 2024

According to Government Regulation No. 21 of 2008, chapter 67, article 3, the Government of Indonesia promotes community involvement in the post-disaster housing recovery act. The resettlement case in Nglepen Village and Pagerjurang Village is categorized as a rapid and massive recovery based on a contractor-based strategy due to limited land availability, budgetary constraints, post-disaster emergency conditions, and the government’s responsibility to provide large numbers of sufficient housing units. In specific circumstances, the condition of the relocation houses will typically not be able to meet the needs of most residents. This study emphasized the sustainable development of the two case studies and highlighted different private residential housing types: 1) a dome-shaped reinforced structure house in Nglepen and 2) a conventional reinforced concrete structural frame house in Pagerjurang. The two different structural housing system types will affect the sustainable development of the housing condition. Field surveys and interviews were conducted in 2022–2023 to collect the primary data, and study of literacy was used to support the findings and analyzed through a descriptive qualitative method. The sustainable development in the case study relocation area is mainly influenced by aspects such as the economic sector, development priorities related to the residents’ activities and needs, and the adaptive design strategy between old and new buildings. According to the disaster management law and derivative regulations, the Government of Indonesia has sought ideal conditions for disaster-affected residents in the relocation and reconstruction processes. The study’s conclusions suggested that the government, beneficiaries, and all stakeholders must collaborate to improve post-disaster housing and settlement relocation planning and reconstruction in the future by involving the residents in the process of deciding on the location, managing the development, and creating comprehensively sustainable development guidelines for the people’s houses and its living environment.
The study of soil organic carbon rate in Gunungsewu Karst Area, Pracimantoro District
Authors: Rafi F M , Danardono
Published: March 2024

Karst landscape has a notable role in carbon cycles. The role isn’t merely through the karstification (solutional) process but also on soil since Soil Organic Carbon (SOC) is the biggest terrestrial organic carbon stock. The purpose of this research was to discover characteristic and calculate organic carbon within rainfed paddy, dry land seasonal crops, shrubland, and homogenic forest in Gunungsewu Karst, Pracimantoro District. The soil sampling method was determined by purposive, then computed through a laboratory test to figure out the soil texture, permeability, bulk density, particle density, porosity, and organic carbon percentage. C-organic assessment refers to the calculation by National Standardization Agency. Permeability is the obvious parameter that was discovered. Soil permeability in the agricultural land uses has a higher value than in non-agriculture land uses. This matter is caused by soil tillage as a human agriculture activity. The result of the SOC assessment is that non-agriculture land use has a higher rate than agriculture land use. SOC within the homogenic forest was the highest rate (30,03 tonnes ha-1), and the dry land seasonal crops was the lowest rate (18,9 tonnes ha-1), whereas the rainfed paddy and shrubland, respectively 21,63 tonnes ha-1 and 23,62 tonnes ha-1. It caused by the litter on the agriculture land use was slightly than the litter that piled up on the non-agriculture land use because the land was tillage and cleaned as an agriculture activity. Research like this should be undertaken in order to gain information about soil or karst roles within carbon cycles as a mitigation to climate change.
Landslide risk reduction for sustainable land use direction in Tawangmangu District, Karanganyar Regency year 2023
Authors: Nugraha Setya , Utomowati Rahning , Saputra Aditya Eka , Saputri Arlina Bunga
Published: March 2024

Tawangmangu District, Karanganyar Regency has an area of 7,002.94 Ha consisting of 10 villages. Topographically located on the western slope of Mount Lawu with a predominantly steep slope, which has an altitude between 655 m and 3,265 meters above sea level. The development of agribusiness-oriented dryland agriculture, natural tourism destinations, and the establishment of residential buildings that increasingly provide job and business opportunities so that there is an increase in government income and surrounding communities. This condition impacts population pressure on land, so the risk of landslides is thought to be higher. Areas prone to landslides are in the central part of Bandardawung Village, Along Village in the west and central regions, Plumbon Village in the middle and east, and Tengklik Village in the west. The study’s purpose, located in Tawangmangu District, Karanganyar Regency, is to determine the reduction of landslide risk for sustainable land use. Descriptive quantitative research methods include determining area function, vulnerability, vulnerability, and landslide risk using scoring and weighting of observation data. The results of the research show that villages that have a high risk of landslides are areas that have a high risk of landslides, namely Blumbang Village, Kalisoro Village, and Tawangmangu Village.
Subsurface structures identification at Bandung Basin based on gravity data
Authors: Koesuma Sorja , Hamida Izzuki , Handayani Lina
Published: March 2024

One of the metropolitan areas in Indonesia, Bandung Basin, is also known to have a high risk of disaster due to geological conditions and fault structures. In order to identify subsurface structures and fault locations, a study was carried out using the gravity method. By utilising TOPEX satellite data, subsurface modelling is performed using the forward modelling method. Based on the modelling results, the Bandung Basin is known to be dominated by young volcanic products such as tuff and lava with a density of 2.2 to 2.65 gr/cm3. However, sedimentary rocks with a density of 2.4 to 2.7 gr/cm3, such as sandstone, clay, and breccia, dominate in the western region of the basin. It is also known that there are indications of the presence and types of faults that cross the basin area based on the residual anomaly of gravity and also 2D modelling
Exploring green office buildings at Sebelas Maret University: A study on students’ perception
Authors: Subarno A , Winarno  , Ninghardjanti P
Published: March 2024

Indoor environmental quality (IEQ) can positively influence occupant satisfaction levels in green-rated buildings. IEQ determines how occupants perceive the interior environment. This study investigated students’ perceptions of green office buildings at Sebelas Maret University. Sixty-eight respondents were involved, consisting of 15 male and 53 female students. Four green office building indicators, namely building features, financial support and commitment, health and well-being, and image and branding, were used as predictor variables, while corporate social responsibility was the dependent variable. Pearson correlation was used for the validation test, and Cronbach’s alpha was used for the reliability test (α = .05). The data were analyzed using multiple regression, taking into account prerequisite tests including normality, linearity, heteroscedasticity, multicollinearity, and autocorrelation. All items were valid and reliable, and all prerequisite tests were met. The results showed that the four independent variables simultaneously have a significant influence on corporate social responsibility (F = 25.78, p < .05). Partially, three predictor variables have significant correlations with the dependent variable: building features (t = 2.86, p < .05), health and well-being (t = 2.03, p < .05), and image and brand (t = 5.16, p < .05). The variables of financial support and commitment have no significant effect on the dependent variable (t = -.32, p > .05). The adjusted R squared value is 0.60, which means that the four independent variables affect the dependent variable by 60%, and 40% is influenced by other variables not included in this study.
Thermal comfort and the influence of dress culture analysis based on temperature humidity index in Pontianak
Authors: Arini A C , Harjanti D T , Apriliyana M I
Published: March 2024

In recent decades, global warming has resulted in rising temperatures worldwide, including in equatorial regions. Pontianak, situated precisely on the equator, faces environmental challenges such as high rainfall, frequently exceeding comfort tolerances in air temperatures, intense solar radiation, and persistent high humidity, impacting thermal comfort. The primary goal of this research is to evaluating thermal comfort conditions in Pontianak, primarily utilizing the Temperature Humidity Index (THI) as a key indicator. The study also investigates the influence of local dress culture and clothing choices on thermal comfort. To further measure the level of thermal comfort in Pontianak, the Temperature Humidity Index formula developed by Nieuwolt was employed. The analysis revealed that, on average, the THI during daytime was 32.87°C, indicating some discomfort perception. This is consistent with the opinions of the local community, who often express discomfort with the thermal conditions in Pontianak. These conditions also affect the clothing choices of Pontianak’s residents. Factors such as material, size, and color are among the main considerations for selecting clothing. Nevertheless, the selection of clothing ultimately depends on the body’s response to the thermal conditions in Pontianak, aiming to minimize the impact of the prevailing thermal conditions.
Willingness to pay for flood risk mitigation among residents living near river’s confluence in Yogyakarta, Indonesia
Authors: Saptutyningsih Endah , Nursetiawan
Published: March 2024

Both property buyers and owners are concerned about the impact of flooding on residential property price. Although several studies have investigated the possibility of property devaluation in flood-prone areas, there are still few that have looked into the effects of flooding on residential properties in Sriharjo, Imogiri, Indonesia. This study aims to examined housing characteristics such as structure, neighborhood, and environment on residential property value. We also created an interaction variable between flood and structural attributes to see whether the impact of flood inundation on property value varies depending on the age of the building, the size of the building area, and the number of bedrooms. Using the hedonic pricing model, we found that flooding reduces the market value of residential property value. The characteristics of property like land square, building square, building age, and number of rooms have influence on property price. The characteristics of neighborhoods are also influence to property price such as distance to city, distance to main road, distance to school and distance to the river. Only one environmental characteristic which influence to property price is height of flood inundation. We discovered that, on average, a rise in the amount of flood inundation decreased property prices in the research region by.015% by using a two-stage estimating approach to evaluate these associations. We calculated IDR 698,500 as the marginal implicit cost of reducing flood inundation. According to subsequent estimates, homeowners would be ready to pay an extra 0.685 percent for a decrease in flood inundation. The study’s findings will help property owners better understand the elements that contribute to property depreciation due to floods. This paper also suggests flood insurance plans since flooding is a significant issue for real estate owners.
The Influence of Socio-Economic Facilities and Population Density on Landuse Changes in Gunungpati District, Semarang City
Authors: Baskoro Wempy , Amin Choirul , Taryono Taryono
Published: March 2024

Land use still serves as a guide for urban development decisions, even though they are typically independent. Establishing important corporate hubs has made economic considerations a key driver in determining how the city’s land-use structure will be governed. The study investigates the influence of socio-economic facilities and population density on land use changes in Gunungpati district, Semarang City. The data processing technique used in this study was to make a map of the administrative area of Gunungpati District. The following data processing stage digitizes Gunungpati District images in 2011 and 2019 to determine land use. Then carry out the overlay process on the two land use maps of the Gunungpati District to find out changes in land use in 2011 and 2019. Qualitative data analysis was used in this study. The findings of land change map overlays between 2011 and 2019 were used for qualitative data map analysis. The findings demonstrate that settlements, which account for 2,255 hectares of land in Gunung Pati District, dominate land use, with Pakintelan Village having the highest residential land use. At the same time, the most minor land use is in the service sector, namely as much as 590 Ha. Land use in Gunungpati District in 2019 was dominated by residential land, namely 2,388 Ha, where the highest residential land use was in Sekaran Village, namely 250.76 Ha. The slightest use of land is on service land, which is 442.51 Ha, with the highest use of service land in Sekaran Village, which is 58.24 Ha. The dominant factors influencing changes in land use are the increase in social facilities and population density, which encourage land conversion and make it a more productive resource.
Analysis of the spread of dengue hemorrhagic fever with the moran index (Case study of Sukoharjo Regency in 2019)
Authors: Puspita M , Hadibasyir H Z , Renika I , Tilova U D N
Published: March 2024

One of the endemic diseases that can be found in tropical areas is DHF or Dengue Hemorrhagic Fever (DHF). Dengue fever can be transmitted through Aedes aegypti mosquitoes that have been infected with the dengue virus. It is estimated that the level of dependence on DHF is always related to the infected area around it. DHF can spread to other people through mosquito bites. Sukoharjo Regency in 2018 recorded 35 cases of DHF sufferers and zero patients died. Increased up to 90% in 2019, there were 317 cases of dengue fever and 10 patients died. Therefore, the purpose of this study is to determine the autocorrelation of the spread of DHF in Sukoharjo Regency in 2019. This study used data on the number of DHF sufferers per subdistrict in Sukoharjo Regency in 2019. The research method used the calculation of the Moran Index. Calculation of Moran’s Index produced a value I = -0.181. Moran’s index value is in the range - 1≤I< 0 so that it indicates a negative autocorrelation. The correlation is classified to be a weak relationship. Negative spatial autocorrelation values indicate locations that are close to each other have values that are not close together. Subdistricts with a high number of sufferers tended to be irregular.
Comparison of the application of HBV and HEC-HMS hydrology models for accessing climate change in the upper Citarum Watershed, Indonesia
Authors: Ningrum Widya , Apip  , Narulita Ida
Published: March 2024

Hydrologically, the upper Citarum watershed was critically damaged. This study propose to compare HBV and HEC-HMS model performance for estimating discharge in upper Citarum watershed. Besides, this study wants to know changes in discharge in the future as a result of climate changes. Discharge simulation was carried out with the HBV and HEC HMS models in the period 2006-2007 as calibration and 2008 as validation. Meanwhile, future discharge changes are calculated in 2045 based on climate model projections output from CORDEX namely MPI, CNRM, EcEarth, and CSIRO. Model performance is calculated based on the value of statistical bias, NSE, and correlation. The results showed that HEC-HMS model has bias, NSE, and corellation value of 6.33, 0.57, and 0.8. Whereas, the HBV values are 3.67, 0.61, and 0.76. Therefore, based on NSE and bias value, the HBV model performs slightly better than the HEC-HMS in upper Citarum watershed. There are an increase in the daily discharge by RCP4.5 scenario. In contrast, the daily discharge by RCP8.5 decreased in upper Citarum.
Micro-Zonation of hot spring manifestation site at Umbul Niti, South Lampung based on microtremor
Authors: Putri Intan Andriani , Paembonan Andri Yadi , Irawati Selvi Misnia , Ekawati Gestin Mey , Yudistira Hadi Teguh , Laesanpura Agus
Published: March 2024

In 2021, an intriguing event unfolded at Umbul Niti village when a resident’s well drilling endeavor unexpectedly yielded to a hot spring, thus transforming the site into a small local tourist attraction that captivates visitors and enhances local economies. However, it is crucial to prioritize the safety of visitors and infrastructure, considering the geological implications of hot springs are related to unstable weak zones that would be severely damaged when an earthquake strikes. Weak zones often exhibit heightened susceptibility to seismic events. Using Horizontal to Vertical Spectral Ratio (HVSR) analysis of micro-tremor data that was recorded for 40 minutes at 25 locations, the Amplification (A
0) and Natural Frequency (f
0) were obtained; then the Seismic Vulnerability Index (Kg
) were calculated. The study area has a dominant frequency of around 4.74 - 9.7 Hz indicating the dominance of hard Tertiary Type I soil from Lampung Formation (QTI). Kg
value ranges from 0.08 - 3.57 interpreted as mostly low hazard level. However, in the NW - SE direction the value indicates a high Kg
value which means a relatively high hazard level, passing through the hot spring location. Thus, the area at the NW-SE zone might require more specific treatment.
Analysis of potential land use conflict for reducing landslide risk in Tawangmangu District Karanganyar Regency
Authors: Utomowati Rahning , Nugraha Setya , Zulfi Muhammad
Published: March 2024

Increasing demands for land use and limited resources lead to land use conflicts. Identification and resolution of land use conflicts is very important in order to use land resources fairly and achieve sustainable development. The research location is Tawangmangu District, Central Java Province. Based on its geographical conditions, Tawangmangu District is an area prone to landslides. Increasing tourism development in the Tawangmangu sub-district has the potential for land use conflicts and will affect the risk of landslides. The research objectives are: (1). Analyzing of Land Use Changes in Tawangmangu District in 2013 - 2023, (2). Analyzing Patterns of Land Use Conflict in Tawangmangu District in 2013 - 2023, (3). Analyzing Land Use Conflict Patterns for Reducing Landslide Risk in Tawangmangu in 2023. The research method is a survey method, the research form is descriptive quantitative with a spatial approach. In this study, spatial descriptions of land use, changes in land use, patterns of land use conflicts in the study area are displayed in the form of thematic maps. Data collection methods are field observations, interviews, document review, image and map interpretation. The main data source for land use is multi-temporal satellite imagery of the Tawangmangu District area. The analysis used is spatial analysis which is processed using a Geographic Information System with the output in the form of land use change maps and land use conflict pattern maps. The results of the study show that there have been significant changes in land use during the period 2013 - 2023, and spatially a pattern of land use conflicts has been formed in the Tawangmangu District.
Spatial patterns analysis of land use changes using spatial metrics in the peri-urban area of Surakarta City 2023
Authors: Noviani Rita , Ahmad  , Marfu’ah Istiyanti Nur
Published: March 2024

The development of cities and the transformation of suburbs are interrelated. Limited land in urban areas causes urban development to move outward towards peri-urban areas. Morphologically, the spatial development of urban fairy areas causes land use change. Surakarta City, as the mother city of the Subosukowonosraten Area, has experienced over-capacity, causing the effect of Surakarta City towards its periphery. This study aims to analyze spatial patterns of land use change using a spatial metrics approach. Research is quantitative descriptive research with a spatial approach. The results showed an increasing trend of residential land use change in all peri-urban zones of Surakarta City, with a faster rate of land use change in the peri-urban area of the inner zone as an area directly adjacent to the core city. The pattern of land use change shows the inner zone, and the outer zone shows the development of clustering patterns. In contrast, the urban shadow zone and rural hinterland zone show the development of longitudinal patterns.
Effectiveness of landslide mitigation education on disaster knowledge and preparedness of students in class VIII SMPN 1 Jenawi
Authors: Nurlaili Titin , Wardhani Puspita Indra , Hafida Siti Hadiyati Nur , Susilawati Siti Azizah
Published: March 2024

The implementation of landslide disaster mitigation education for students is an effort that can be made to increase students’ disaster knowledge and preparedness for landslides. Actions are needed to increase disaster knowledge and preparedness to minimize the impact caused by disasters. The objectives of this study are (1) to analyze the level of disaster knowledge of grade VIII students towards landslides; (2) to analyze the preparedness of grade VIII students of SMP Negeri 1 Jenawi towards landslides; and (3) to analyze the effectiveness of the implementation of landslide disaster mitigation education on the level of disaster knowledge and the level of preparedness of grade VIII students of SMP Negeri 1 Jenawi. This quantitative research method uses a pretest-posttest control group experimental design that uses questionnaires for data collection. The results showed that 1) The level of disaster knowledge of experimental class students on pretest results has an average of 81.59, while the control class has an average of 79.71, 2) The level of preparedness of experimental class students has an average of 64.97, while the control class has an average of 66.52. 3) The effectiveness of implementing disaster mitigation education on the level of disaster knowledge and preparedness of students in the N-Gain Score test shows that it is effective enough to be applied as an appropriate and effective step in reducing the risk of landslides.
Looking at the relationship of PM10 suspended particle concentration from daily observations and annual observations of the Ipoh Meteorological Department, Perak
Authors: Ismail Mohamad Ihsan Muhamad , Ibrahim Mohd Hairy , Ladan Tijjani Abubakar , Muryani Chatarina , Wijayanti Pipit
Published: March 2024

The objective of the study is to see the relationship between the concentration of suspended particulate matter (PM10) from daily observation data and annual observation data from the Ipoh Meteorological Department. In general, the data required in this study can be divided into two groups of data, namely primary data and secondary data. Primary data is obtained through observation using the field study method and observed in the field horizontally while secondary data is from annual observation records. Observations are carried out at 34 stations determined based on the source of pollution. In this study, the selected location is in the Ipoh, Perak area and the focus of the research problem is the high data obtained from the annual observation of suspended particles. The results of the study found that there is a relationship between the annual concentration of suspended particles and the concentrations of daily observations. Studies have shown that industrial areas and factories such as cement factories, limestone factories, and stone crushing areas are the main sources of pollution with high concentrations of suspended particles in Ipoh.
Analysis of potential soil degradation on agricultural land based on geographic information systems in Slogohimo District, Wonogiri Regency
Authors: Herdiansyah G , Herawati A , Safira R , Hardian T , Istiqomah N M , Hasanah K , Romadhon M R
Published: March 2024

Slogohimo District is one of the districts located in Wonogiri Regency with an area of 6.415 ha. Population growth in Slogohimo District has increased by 7,068 people from 2017 to 2022. The total population in 2022 is 53,403 people with the majority livelihood being farmers. Population increase will have an impact on increasing the demand for biomass. Land management that does not pay attention to conservation principles will cause changes in the soil’s basic properties and impact the biomass produced. About 84,91% of the land in Slogohimo District is used as agricultural land in paddy fields, moor, and plantations. The increase in population and the need for biomass, triggers more intensive processing of agricultural land which has the potential to cause soil degradation potential degradation. Based on these problems, it is important to carry out an assessment of the potential for degradation to agricultural land in Slogohimo District. The method used is overlaying thematic maps consisting of soil type maps, rainfall maps, slope maps, and land use maps through spatial data analysis based on Geographic Information Systems (GIS). The potential for soil degradation is obtained from the scoring results which refer to the standard criteria in the Technical Guidelines for Preparation of Soil Degradation Degradation Status Maps for Biomass Production. The results showed that potential degradation to the soil on agricultural land in Slogohimo District was classified into three classes by area or proportion of land, namely low class covering 1.558,08 ha, medium class covering 2.800,70 ha, and high class covering 919,93 ha.
Application of Analytical Hierarchy Process (AHP) and Geographic Information System (GIS) in flood hazard analysis in the Rawa Pening Sub-Watershed, Indonesia
Authors: Khumaeroh Dinda Nur Fadila , Sari Dewi Novita
Published: March 2024

The watershed is one of the ecological functional units in a region. The Rawa Pening Sub-Watershed, located in Semarang Regency and its surroundings, is the upper region of the Tuntang Watershed, which experiences periodic floods. Flood hazard disasters occur due to several contributing factors. This phenomenon significantly affects the residents in the Rawa Pening Sub-Watershed, particularly in the agricultural sector, specifically in the local paddy fields. With the development of Geographic Information Systems (GIS) in disaster management, it is possible to provide preliminary information on predicting flood hazard zones, particularly in the Rawa Pening Sub-Watershed. This study aimed to determine the most influential parameters and areas highly prone to flood hazards in the Rawa Pening Sub-Watershed. Nine parameters, including elevation, slope, curvature, precipitation, land use, soil type, distance to the river, Normalized Difference Vegetation Index, and Topographic Wetness Index, were analyzed based on their respective roles. The Analytical Hierarchy Process (AHP) and Ordered Weighted Averaging (OWA) techniques were employed to obtain the flood hazard map. The nine parameters were weighted according to a Forum Group Discussion. The results yielded a flood hazard map divided into five zones: very low (3451,64 Ha / 13,16%), low (5024,29 Ha / 19,16%), moderate (6049,35 Ha / 23,07%), high (7949,67 Ha / 30,31%), and very high (3750,93 Ha / 14,30%).
Ten daily rainfall forecasting using SSA algorithms and Seasonal ARIMA model to determine the beginning of the rainy season
Authors: Ruhiat D , Soekarno I , Kardhana H , Suwarman R
Published: March 2024

Rainfall is one of the most important hydrological parameters. Based on the prediction of rainfall, several plans related to rainfall can be carried out, including predicting the start of the planting season based on information on the beginning of the rainy season and preparing cropping patterns. The purpose of this study is to predict the ten daily rainfall for 12 months from January to December of the following year and predict the start of the rainy season based on BMKG criteria. Modeling and forecasting is carried out on the ten daily regional rainfall in the catchment of Citarum-Majalaya water gauge using the Singular Spectrum Analysis (SSA) algorithm and the Seasonal ARIMA model. Forecasting model performance is measured using error values, namely mean absolute percentage error (MAPE). The results of these performance tests illustrate that the SSA algorithm and the Seasonal ARIMA model have fairly good accuracy for predicting rainfall for the next 6 months, where each has a MAPE value of 36.8 percent and 40.0 percent. Prediction of the beginning of the rainy season at the study location based on SSA forecasting results is most likely to occur on the 3rd of October, in accordance with BMKG predictions. whereas based on the results of the SARIMA forecasting model, the beginning of the rainy season is likely to occur on the 1st of November, and another possibility that the beginning of the rainy season will occur on the 2nd of October.
The governance of Household Hazardous Waste (HHW): A literature review of HHW-related regulation in Southeast Asian developing countries
Authors: Nasarani Glory , Purnaweni Hartuti , Maryono Maryono , Surahman Nofriani
Published: March 2024

Growing cities of developing countries followed by human activities brings challenge on how to manage the massive solid waste production. Pile of solid waste in the collecting or dumping sites produce methane gas that threaten earths’ climate change, whereas leachate with organic, inorganic, and hazardous contaminants resulted in soil and groundwater pollution. Furthermore, untreated solid wastes are aesthetically disturbing and environmentally polluting as they enter the water bodies. More than 40% of the Municipal Solid Waste are generated by household activities and approximately 1% of it contains hazardous materials, such as heavy metals and inert materials. Unprocessed Household Hazardous Waste (HHW) carries substantial ecological impacts. However, issues on HHW considered to have less attention either by community or government due to the requirement of specific treatment and the cost of final disposal. The role of regulation or guidelines are critical to manage the HHW handling. This review aims to explore the availability of national as well as local regulation related to HHW management in Southeast Asian developing countries and to analyze the correlation between GNI level and the government concern on HHW issues. Despite the main solution, the availability of HHW regulation is required to govern the management and minimize the contamination to the environment. The analysis is based on literature from journals as well as official websites from each country which studied. The result of the study can give an alternate perspective on the governance of HHW in developing countries.
Community vulnerability and resilience to flood disaster in Losari District, Brebes Regency
Authors: Sadanna Andhika Putra , Setyowati Dewi Liesnoor , Suharini Erni
Published: March 2024

Brebes Regency is an area that has a high level of vulnerability to flooding. One of the areas with a high level of vulnerability is in Losari District. The flood disaster in Losari District occurred due to the overflow of the Cisanggarung River. The aims of the research: (1) to analyze the community’s vulnerability to floods on social, economic, physical and environmental aspects in Losari District; (2) assessing the vulnerability of the people of Losari District to floods; (3) analyzing the resilience of the Losari sub-district community to floods. This research is a quantitative esearch with a survey method. The study population came from the heads of families in the Losari District who live along the Cisanggarung watershed. The sampling technique uses a purposive sampling method. Statistical descriptive analysis was used to analyze vulnerability in social, economic, physical and environmental aspects, as well as community resilience to floods. The results of the study show that: (1) More than half of the people of Losari District have a high category of social vulnerability; high category of economic vulnerability; high category of physical vulnerability; and low category environmental vulnerability. (2) More than half of the people of Losari District fall into the high vulnerability category. (3) The resilience of the people of Losari District to floods is included in the low category.
Study of tsunami source as preparation for tsunami modeling in Sulawesi
Authors: Putri Aprilia Manggala , Saputra Aditya , Wibowo Afif Ari
Published: March 2024

The Sulawesi region is prone to earthquakes due to the existence of a Subduction Zone which can generate a tsunami so that tsunami modeling is important as a tsunami mitigation effort in the future. The purpose of this research is to study the maximum earthquake potential in the Sulawesi Subduction Zone and to model the tsunami source with a multi-deformation scheme. The research method is a literature study using the 2017 National Earthquake Center book, tsunami modeling using an earthquake scenario with a magnitude of 8.5 Mw, a depth 20 Km, fault dimension modeling using global mapper software based on the Scaling law, fault dimensions with a length of the fault area and a width of the fault area, the earthquake parameters in the study consist of magnitude, epicentre depth, dip, slip, fault area length, the width of the fracture area and the dislocations. Tsunami source modeling uses the multi-fault. The results of this study are the maximum potential for an earthquake of around 8.5 Mw, the shape of the earthquake deformation and parameters as well as the tsunami source model that describes the sea level conditions experiencing an increase of 5,7 meters and for the decrease in sea level reaching -5.9 meters.
Identified benefits of community trees in Martelu Purba Nature Reserve
Authors: Rangkuti A B , Hartini K S , Susilowati A , Rambey R , Peniwidiyanti  , Irmayanti L , Indriani F
Published: March 2024

The tree species in the Martelu Purba Nature Reserve has been identified. There were 39 plant species from 27 families. Publication of the benefits of each tree species in Martelu Purba Nature Reserve has not been well done. The trees have good potential for further exploration to discover their real benefits for human welfare. This research aims to identify the benefits of the Martelu Purba Nature Reserve. The method used in this study was an exploratory method of tree species in the Ancient Martelu Nature Reserve, and then the benefit categories of each type were determined with reference to the book Indonesian Useful Plants by K. Heyne. Based on research results, the benefits of trees are classified into six categories: raw materials for medicines, food sources for humans and animals, trees to improve environmental conditions, heavy and light construction materials, natural dyes, and paper-making materials. Each type has more than one benefit. Around 35%, or 24 species, are used for consumption; as many as 29%, or 20 species, are used as medicinal plants and as building materials. 21%, or 14 species; besides that, there are tree species for which the local community uses the sap and Gamblea malayana (MRHend.) CBShang, Lowry & Frodin as a phytoremediation plant.
Agroforestry system on peatlands in Pulau Hanaut, Kotawaringin Timur: A win-win solution to preserve peatland functions
Authors: Purwanto  , Ura R , Nuralamin  , Handayani D , Azwar F , Wakhid N , Premono B T , Siahaan H , Bastoni  , Sundari S , Lestari D P , Darusman T , Tata H L
Published: March 2024

Agroforestry on peatlands in Pulau Hanaut sub-district of Kotawaringin Timur is an approach that combines agricultural crops with trees on peatlands. The location of this project is in Serambut and Babaung villages, Pulau Hanaut sub-district. Primary data were collected through Focus Group Discussions (FGD), interviews, and direct observation in the field, and secondary data were collected by studying the related documents that existed. All the data then were analyzed by qualitative descriptive analysis. This site has a peat depth of less than 50 cm and a maximum water table between -10 to -15 cm. Peatland is a unique ecosystem that requires specific considerations for agroforestry practices. Implementing proper water management techniques, such as controlled water levels and irrigation, can help maintain the hydrological balance. Tree species selection that are suitable for peatland conditions were chosen by the communities, such as fruit tree species, cashew nuts, and enrichment planting on the current coconut farm. In addition, fire prevention is also an important part of peatland management. Therefore, zero-burning and organic farming practices should be implemented. Implementing agroforestry on peatlands requires careful planning, considering the unique characteristics of peatland ecosystems, and the ecological, social, and economic aspects of the local community. Local stakeholders’ involvement in decision-making processes is highly recommended to ensure the success of agroforestry initiatives on peatlands in the sub-district, which is part of the Mentaya-Katingan Peat Hydrological Unit, Central Kalimantan.
The Response of giving Gamal, Calliandra, and Lamtoro leaves compost fertilizer to Stevia plant (Stevia rebaudiana Bertoni) growth
Authors: Siregar A P , Wijayanto N
Published: March 2024

Stevia (Stevia rebaudiana Bertoni) is a herbaceous plant, a sweet plant that can replace cane sugar. This plant is a shortday crop that can be harvested within 40-60 DAP. Compost is an organic fertilizer that is made by utilizing the weathering process from the interaction of microorganisms and decomposing bacteria. One of the litters can be utilized include gamal, calliandra and lamtoro. The purpose was to determine the effect of the three composts on the growth and productivity of the stevia. The analysis method used a completely randomized design (CRD) with one factor and four treatments. The results showed that compost had a significant effect on all observed variables including height, diameter, number of leaves, fresh weight and plant biomass. The highest growth and productivity of stevia plants were produced by stevia plants in treatment P3 (lamtoro compost), which influenced all observed aspects, including height and diameter (21.7 and 2 cm), number of leaves (152 leaves), total wet and dry weight (16.54 and 3.58). The lowest yields were produced in treatment P0 (control), which only increases the height and diameter by 5.81 and 1 cm, with only 60 leaves and 6.25 and 1.28 grams for dry and wet weights, respectively.