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Hasil Pencarian : 33 record
1. Land Use/Land Cover Change Model for Mapping, Monitoring and Modeling Environmental Changes in Segara Anakan Due to Heavy Sedimentation in the Downstream of Citanduy River-Indonesia
- Creator : Prayudha, Bayu, Ulumuddin, Yaya I., Siregar, Vincentius, Julzarika, Atriyon, Prasetyo, Lilik B., Agus, Syamsul B., Suyadi, Suyarso, Avianto, Praditya, Nurjamin, Pasaribu, Riza A., Rachmansyah, Muhammad Faisal, Adji, Arif Seno,
- Content Type : Chapter
- Publication Name : Remotely Sensed Rivers in the Age of Anthropocene
- Publication Type : Book | 2025-01-01
- Abstract : Water erosion in upland riverine areas leads to sedimentation in the lowlands, which also affects certain habitats in the estuarine ecosystem. The alteration of the estuarine ecosystem has affected the shifting of mangrove habitat in Segara Anakan Lagoon (SAL). Heavy sedimentation has impacted this area as a result of complex natural and anthropogenic activities that are causing soil erosion in the Citanduy River’s upstream area. Sedimentation causes new land to emerge gradually, reducing water area. It had also altered the environment, particularly in the western part of the SAL. It is responsible for the degradation of critical habitats such as marine biota and mangrove forests. Monitoring is essential for providing policymakers and other stakeholders with an accurate picture of the situation when managing their area and its resources. With spatial-based information, users can easily understand a comprehensive picture of phenomena that occur in a specific area. This study used the LULCC (Land Use/Land Cover Change) model to predict a shift in the lagoon habitat. The model revealed that the change in landform has mostly contributed to the alteration of mangrove composition and its distribution in the study area. The sedimentation process has led to the development of new lands, creating a low-saline environment that fosters the growth of invasive plant species. Further, invasive plant species will replace mangrove forest in the majority of the lagoon water area. The model predicted that the lagoon’s water area would shrink by 57% over the next five decades.
2. A review on the biodiversity and conservation of mangrove ecosystems in Indonesia
- Creator : Rahman, Lokollo, Frijona F., Manuputty, Gratia D., Hukubun, Ronald D., Krisye, Maryono, Wawo, Mintje, Wardiatno, Yusli,
- Content Type : Article
- Publication Name : Biodiversity and Conservation
- Publication Type : Journal | 2024-03-01
- Abstract : This study was conducted to analyze the biodiversity of mangrove species and fauna in Indonesia as well as the management strategies for its preservation. The results showed that the total number of mangrove species was 240, consisting of 48 true and 192 associated mangrove. This number also comprised 74 trees, 36 shrubs, 52 herbs, six palms, 43 epiphytes, 23 lianas, three ferns, and three parasite species. Aglaia mackiana was identified as a new record in the Papua region attributed to the New Guinea Coastal Current (NGCC), while Ceriops australis was newly found in regions of Papua, Bali—Nusa Tenggara (Timor, Flores, Sumbawa), Java, and Sumatra (Pulau Bilinton). The diversity of marine fauna in the mangrove area consisted of 125 fish species from 47 families and 169 macrozoobenthos from 52 families. In addition, there were 161 terrestrial faunas, consisting of 80 birds, 38 squamata, four crocodiles, six amphibians, 11 testudinate, and 21 mammal species. This high level of biodiversity was influenced by the commitment of the Indonesian government to managing mangrove ecosystems through conservation. These efforts were carried out to preserve and improve ecosystem services such as mangrove biodiversity, carbon stock potential, coastal protection, and the unique biodiversity of marine and terrestrial fauna. Based on the results, incredibly unique fauna included Crocodilus found in Papua, Kalimantan, Java, and Sumatra region, Halcyon sp. in Papua and Java region, Anhinga sp. in Kalimantan and Java region, as well as Nasalis larvatus in Kalimantan.
3. Human and Nature: Identifying the Sustainability of Cultural Landscape from Marine and Aeolian Landforms in Southern Yogyakarta Special Province
- Creator : Sitohang, Lidya Lestari, Makhmudiyah, Nurul, Wirabumi, Putu, Rohmawati, Nur Laili, Ridwan, Tarisa Wahyuni Putri, Geofani, Edho Bramatius, Cahyana, Chalisa Dwi, Sasangka, Dewangga Anugrah,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 4th International Conference on Social Sciences and Law (ICSSL 2024)
- Publication Type : Book | 2024-01-01
- Abstract : Marine landscapes are shaped by seawater, while aeolian landscapes are influenced by wind activity. Cultural landscapes, however, emerge from human activities, which often lead to sustainability challenges. This article examines the cultural landscape formation and its sustainability within the context of marine and aeolian land processes in the Parang Kusumo sand dunes. The study employs a qualitative descriptive method. The data collection process employed triangulation, comprising field observations, expert interviews, and literature reviews. Thematic analysis was employed in order to identify and interpret patterns within the qualitative data. This approach sheds light on the interplay between human activities and natural landscapes, with a particular attention to sustainability challenges encountered in marine and aeolian environments. The aim is to identify the cultural landscapes in marine and aeolian environments through a sustainability lens. The findings indicate that the unique marine and aeolian landforms significantly promote community activities that are economically beneficial. Nonetheless, human activities in the marine and aeolian areas of Yogyakarta are the primary factors contributing to the decline in ecosystem productivity of these landscapes.
4. Formula Optimization of Foaming Agent Using Mixture-D-Optimal Method and Application in Peat Fire Suppression
- Creator : Subekti, Purwo, Hambali, Eliza, Suryadarma, Prayoga, Saharjo, Bambang Hero, Aprizal, Suripto, Heri, Iskandar, Isdaryanto,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 4th International Conference on Experimental and Computational Mechanics in Engineering
- Publication Type : Book | 2024-01-01
- Abstract : Foaming agents for fire suppression on peatland were formulated from the saponification product of palm oil fatty acids, namely sodium laurate and potassium palmitate. This study aimed to obtain the best formulation of sodium laurate and potassium palmitate as raw material for foaming agent concentrate through formula selection based on physical parameters foaming ability, foam stability, and surface tension. In addition to obtaining the best formula, foam liquid performance test for the foaming agent was also conducted on the peat fire suppression applications. Formulation of sodium laurate and potassium palmitate that produce the best foaming agent concentrate was 20% sodium laurate, 5.58% potassium palmitate, and 74.42% water, which produced a foaming response of 393.58%, foam stability of 69.59%, and surface tension of 31.11 dyne/cm. Foam performance test for the mixture of water and foaming agent showed that peat fire could be extinguished in 3 h 50 min 42 s using 4.56 L/m 2 extinguishing solution. Meanwhile, fire suppression with water requires 5 h 31 min 59 s, with the application of 9.72 L/m 2 solution. Water mixed with a foaming agent concentrate can extinguish peat fires faster than using water alone, besides being faster the application of foaming agents can reduce water consumption.
5. Modeling Community Empowerment and Development Around the Mining Area
- Creator : Budi, Adi Asmariadi, Anggraini, Nova, Amin, Muhammad,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the International Conference on Multidisciplinary Studies (ICoMSi 2023)
- Publication Type : Book | 2024-01-01
- Abstract : Mining activities not only have an impact on the environment, but also on social life around the mining area. Houses damaged by bomb activity in mining areas are one example. Communities around the mining area are the most affected by the mining activities. Not only the impact of mining activities, but also the gaps that cause conflict between mining companies and communities around mining areas. Understanding of the relationship between mining company and communities around it, and also stakeholders involved need to be clearly known. That understanding is used to model how community empowerment and development around the mining area is built. The study uses a qualitative approach to model it. The causes of mining conflicts were collected to draw the mining conflicts mapping in Lampung Province. Observations and in-depth interviews were conducted with 17 research informants, 4 location observations, and two focus group discussions to model the suitable community empowerment and development for areas around the mining project. Related regulations were also analyzed as material to construct the model. The result found that the model shapes a loop diagram where it should be started from regulation as a legal standing and foundation. The next steps in the sequence are building community empowerment and development patterns/forms, implementing coordination, funding, object targeting, transparency and supervising, evaluation, sanctions and success promotion, and then it feeds back to regulation. This loop diagram as a community empowerment and development model can be used by government and mining companies to develop social aspects in the mining sector.
6. Ulayat Land Disputes in Minangkabau Customary Law Community: Customary Courts As An Alternative
- Creator : Iswari, Fauzi, Handayani, I Gusti Ayu Ketut Rachmi, Karjoko, Lego,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the International Conference on Law, Economic & Good Governance (IC-LAW 2023)
- Publication Type : Book | 2024-01-01
- Abstract : Ulayat rights disputes must be taken seriously and resolved relatively in customary law communities. Customary justice aids. Minangkabau customary law community Ulayat land disputes, their resolution, and customary justice are examined in this study—normative legal research using secondary data. Data was analyzed using induction and deduction. Research shows that ulayat land conflicts are created by differences in views, beliefs, opinions, interests, and the position of ulayat and customary law groups over areas where land rights have not been awarded but are held by other parties. Litigation, non-litigation, or advocacy can resolve customary rights conflicts. Nagari Courts assist in settling community issues. Village Nagari Courts are governed by regional regulations, unlike statute-based courts. The 1945 Indonesian Constitution’s Article 18B paragraph (2) and Transitional Rules Article II recognize customary justice institutions to respect customary law communities’ rights.
7. Integrating GIS and remote sensing for land use/land cover mapping and groundwater potential assessment for climate-smart cocoa irrigation in Ghana
- Creator : Akpoti, Komlavi, Dembélé, Moctar, Forkuor, Gerald, Obuobie, Emmanuel, Mabhaudhi, Tafadzwanashe, Cofie, Olufunke,
- Content Type : Article
- Publication Name : Scientific Reports
- Publication Type : Journal | 2023-09-25
- Abstract : Although Ghana is a leading global cocoa producer, its production and yield have experienced declines in recent years due to various factors, including long-term climate change such as increasing temperatures and changing rainfall patterns, as well as drought events. With the increasing exposure of cocoa-producing regions to extreme weather events, the vulnerability of cocoa production is also expected to rise. Supplemental irrigation for cocoa farmers has emerged as a viable adaptation strategy to ensure a consistent water supply and enhance yield. However, understanding the potential for surface and groundwater irrigation in the cocoa-growing belt remains limited. Consequently, this study aims to provide decision-support maps for surface and groundwater irrigation potential to aid planning and investment in climate-smart cocoa irrigation. Utilizing state-of-the-art geospatial and remote sensing tools, data, and methods, alongside in-situ groundwater data, we assess the irrigation potential within Ghana's cocoa-growing areas. Our analysis identified a total area of 22,126 km 2 for cocoa plantations and 125.2 km 2 for surface water bodies within the cocoa-growing regions. The multi-criteria analysis (MCA) revealed that approximately 80% of the study area exhibits moderate to very high groundwater availability potential. Comparing the MCA output with existing borehole locations demonstrated a reasonable correlation, with about 80% of existing boreholes located in areas with moderate to very high potential. Boreholes in very high potential areas had the highest mean yield of 90.7 l/min, while those in low groundwater availability potential areas registered the lowest mean yield of 58.2 l/min. Our study offers a comprehensive evaluation of water storage components and their implications for cocoa irrigation in Ghana. While groundwater availability shows a generally positive trend, soil moisture and surface water have been declining, particularly in the last decade. These findings underline the need for climate-smart cocoa irrigation strategies that make use of abundant groundwater resources during deficit periods. A balanced conjunctive use of surface and groundwater resources could thus serve as a sustainable solution for maintaining cocoa production in the face of climate change.
8. Substantial Changes in Physical and Chemical Properties of Spodosols Soil by Hardpan Breaking and Mounding in Oil Palm Plantation
- Creator : Suwardi, Sutiarso, Lilik, Wirianata, Herry, Nugroho, Andri Prima, Sukarman, Primananda, Septa,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the International Conference on Sustainable Environment, Agriculture and Tourism (ICOSEAT 2022)
- Publication Type : Book | 2023-01-01
- Abstract : Spodosols soil are categorized as a marginal or sub-optimum soil which has several limiting factors and potential for oil palm plantations. The main limiting factors for spodosols are the presence of a spodic layer, poor nutrients, acidic pH, low water retention capacity, and low cation exchange capacity (CEC). This study aimed to determine changes in physical and chemical soil in each layer of spodosols control and treatment hardpan breaking and mounding treatment. This study was conducted on oil palm age 13 -1 5 years on spodosols in Central Kalimantan. Each sample was taken from control block (20 ha) and treatment block (20 ha) with 5 sampling points which were composited into one. Sampling was based on depth of spodosols layers which are AP (AP0, AP+), E (E1, E2), and B (B1, B2). Observed parameter were physical (texture) and chemical soil that was to evaluate soil fertility control and treatment hardpan breaking and mounding. It used to evaluate soil fertility oil palm plantation control (T0) and treatments (T1). The results showed hardpan breaking and mounding exercise in oil palm could enhance the physical soil properties of spodosols, by improving the soil texture from sand to loamy sand (especially in layer Ap). The soil texture changing from sand to loamy sand had improved the Soil Available Water Capacity (SAWC) on spodosols from 58.3 mm to 91.7 mm. This SAWC improvement could minimize the potential of water deficit in oil palm which planted in Spodosols soil. The hardpan breaking and mounding also enhanced the chemical soil properties of spodosols, by improving pH level, C-organic, N-total, P-total, P-Bray, Exc-K, Exc-Mg, Exc-Na, and CEC.
9. The Best Alternative for Revitalising the Asset Area of PT. KAI in Kota Tua, Jakarta
- Creator : Ramadhani, Anindita, Wartaman, Anita Sitawati, Fatimah, Endrawati, Adriana, Martina Cecilia, Sitorus, Aldi Mangapul, Zikra, Audia,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 6th International Conference on Indonesian Architecture and Planning (ICIAP 2022)
- Publication Type : Book | 2023-01-01
- Abstract : The revitalisation of Kota Tua (Jakarta old town area) is facing arduous land ownership problems. There, PT. Kereta Api Indonesia (KAI), a state-owned enterprise, has the ownership of land assets in the core zone of Kota Tua that needs to be revitalised. Therefore, the research aims to find the best alternative for managing PT. KAI land assets to increase the economic value of Kota Tua. The research method is descriptive, using the ‘highest and best use’ analysis technique to assess the feasibility of legal, physical, financial and productivity aspects of the asset. The finding identified that the best land use alternative is mixed land use, whereby 65% of the area is allocated for mixed activities (i.e. office, trade, services and tourism) and 35% for rental flat housing.
10. Physiological Aspects of the Growth of Corns (Bonanza 9-F1 and Bisi-18) to Air Salinity Conditions on Coastal Area
- Creator : Saparso, Sudarmaji, Arief, Musthafa, Muhammad Bachtiar,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 3rd International Conference on Sustainable Agriculture for Rural Development (ICSARD 2022)
- Publication Type : Book | 2023-01-01
- Abstract : The air salinity in coastal area may contribute significant effects to the growth of plants. Physiological aspects of the plant growth of plants are important information to give optimal treatments during cultivation process. One potential plant cultivated on coastal area is corns. This study aimed to study the physiological response of corn’s growth to certain air salinity condition during cultivation on coastal area, and to determine their salinity tolerance index. The research was conducted in a screen house at the experimental farm of the Faculty of Agriculture, Jenderal Soedirman University, from July to November 2021. The study was conducted using method of Randomized completely Block design factorial with two factors. The first factor is the corn varieties (Bonanza -9 F1 and Bisi-18), and the second factor is air salinity (0 mS, 6 mS, 12 mS, and 18 mS). The data were analyzed by using the Anova, and continue to 5% Duncan's Multiple Range Test (DMRT), when the result is significantly different. The observed variables were plant height, number of leaves, leaf area, root length, fresh root weight, root dry weight, stem fresh weight, dry stem weight, fresh leaf weight, dry leaf weight, and chlorophyll a and b, proline content, stomata density, widht stomata opening, fresh weight of corn cob, dry weight of corn cob, seed fresh weight, dry seed weight, and number of seeds. The results of the research showed that the tolerance index of the Bisi-18 corn was higher than Bonanza 9-F1 corn, which showing better physiology aspects of chlorophyll content and proline content. The 6 mS air salinity treatment reduced chlorophyll content at the end of vegetative and generative, leaf area, fresh and dry weight of seeds, and the number of corn seeds. The 18 mS air salinity treatment showed the highest proline content and decreased at 12 mS and 6 mS treatments. The interaction of treatments on proline content, stem fresh weight, and chlorophyll content showed that Bonanza 9-F1 corn plants with 18 mS air salinity treatment showed the highest yields. The tolerance level of the Bisi-18 corn showed that the plant was still tolerant at 18 mS salinity. In comparison, the Bonanza 9-F1 corn showed intolerant results at 6 mS air salinity.
11. The Effect of Cow Manure and NPK Fertilizer on Soil Chemical Fertility, Soybean Growth, and the Yield on Sandy Soil
- Creator : Sagala, Danner, Tasti, Eka Putri Lingga, Rustianti, Sri,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 3rd International Conference on Agriculture (ICA 2022)
- Publication Type : Book | 2023-01-01
- Abstract : Research to determine the effect of cow manure and NPK fertilizer on soil chemical fertility, soybean growth, and the yield on sandy soil was conducted in the coastal area of Bengkulu, Indonesia. Doses of cow manure consisting of 0, 30, 50, and 70 t ha −1 and NPK fertilizer composed of 0, 150, 300, and 450 kg ha −1 were arranged according to a randomized block design. The response of soybean plants was observed through plant height, number of leaves, number of branches, number of pods per plant, the weight of 100 seeds, and seed production per plot (1.5 m 2 ). The results showed that coastal land with sandy characteristics was included as marginal land with low chemical and physical fertility. The application of cow manure and NPK fertilizers caused an increase in soil chemical fertility. The growth and yield of soybean plants were not significantly affected by the application of various doses of cow manure and NPK fertilizer. However, soybean seed yields tended to be higher with high dosages of cow manure and NPK fertilizers.
12. Local Resource Governance: Strategies for Adapting to Change
- Creator : Turner-Walker, Skye,
- Content Type : Chapter
- Publication Name : Environmental Governance in Indonesia
- Publication Type : Book | 2023-01-01
- Abstract : Climate change is significantly impacting local communities throughout Indonesia that are dependent on access to ecosystems and weather-dependent resources. This chapter explores how local resource governance systems shape responsiveness and adaptive capacity of communities to pressures and change. Drawing on two comparative cases studies of coastal communities in Indonesia, this chapter conveys how active responses to environmental pressures and change over resource and land conflict, are indicative of adaptive capacity and how communities are likely to adapt to climate change impacts. The chapter argues through illustrative examples that local resource governance determines innovation and engagement through collective handling, reciprocity, cooperation and coordinated action, in order to adjust and adapt in dealing with environmental pressures, elite capture, conflict and change.
13. Inhibitory Activity of the α-Glucosidase Enzyme by Albumin Isolated from Giant Gourami (Osphronemus Goramy), Rice Eel (Monopterus albus), and Mackerel Tuna (Euthynnus affinis)
- Creator : Sa’adah, Anifatus, Muhtadi,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 4th International Conference Current Breakthrough in Pharmacy (ICB-Pharma 2022)
- Publication Type : Book | 2023-01-01
- Abstract : The giant gourami ( Osphronemus goramy ), rice eel ( Monopterus albus ), and mackerel tuna ( Euthynnus affinis ) are among the sources of protein and albumin that have been used to lower the blood glucose level of people with Diabetes Mellitus (DM). This study aims to determine the protein levels and albumin content of O. goramy , M. albus , and E. affinis and the inhibition activity of albumin against the α-glucosidase enzyme. This study employed an experimental method with accidental sampling. The protein content of fresh fish fillets was tested using the Kjeldahl method and extracted using a centrifuge to obtain albumin. Albumin levels were determined using a visible spectrophotometer. The inhibitory activity of albumin against α-glucosidase enzyme was tested using an ELISA reader. The results showed a significant difference between freshwater and seawater fish proteins, namely giant gourami of 13.91%, rice eel of 14.41%, and mackerel tuna of 30.55%. The highest albumin content was obtained from mackerel tuna (4.75 ± 0.04 g/100 mL), followed by giant gourami (3.61 ± 0.26 g/100 mL), and rice eel (2.38 ± 0.26 g/100 mL). The albumin showed no significant activity against the α-glucosidase enzyme.
14. Protein Profiles of Snakehead (Channa striata), Catfish (Pangasius hypopthalmus), and Mackerel (Rastrelliger spp.) and Their Effectiveness as Antidiabetic Agents
- Creator : Sa’ad, Muhammad, Muhtadi,
- Content Type : Chapter ConferencePaper
- Publication Name : Proceedings of the 4th International Conference Current Breakthrough in Pharmacy (ICB-Pharma 2022)
- Publication Type : Book | 2023-01-01
- Abstract : The safety of oral antidiabetic drugs as the first-line therapy for Diabetes Mellitus (DM) has been a prevailing issue. Meanwhile, these drugs are used for long-term treatment and they often require combination therapy. Natural medicine is an alternative to address the safety issue of drugs because of its minimal side effects and abundant availability. One of the alternatives is snakehead ( Channa striata ), which has been reported to have antidiabetic activity derived from the regeneration of the damaged pancreatic islets of Langerhans. In addition, snakehead fish is a source of amino acids that lower the accumulation of blood glucose. This study aimed to examine the protein profiles and antidiabetic activity of catfish ( Pangasius hypopthalmus ) and mackerel ( Rastrelliger spp ) and to determine their capacities as alternatives to snakehead. The albumin measurements showed that the albumin levels of snakehead, catfish, and mackerel were 4.84 ± 0.54%, 2.57 ± 0.29%, and 2.39 ± 0.29%, respectively. The proximate analysis showed a protein content of 11.8%, 13.58%, and 16.93%, respectively. The screening of α-glucosidase inhibitory activity obtained that the inhibitory activities of the samples were lower than that of acarbose as the control (p < 0.05). Interestingly, all the samples indicated a similar pattern in α-glucosidase inhibitory activity, of which the hydrolysate had a higher potency than the albumin, and the albumin was higher than the powder content (p < 0.05). Briefly, catfish and mackerel can be the alternatives to snakehead to support the management of DM therapy.
15. The Potential of Mangrove Forests for Tanjung Rejo Communities, Deli Serdang District, Indonesia
- Creator : Dalimunthe, Femmy Indriany, Yanti, Dewi, Albattat, Ahmad,
- Content Type : Chapter ConferencePaper
- Publication Name : 4th International Conference on Tourism, Gastronomy, and Tourist Destination (TGDIC 2023)
- Publication Type : Book | 2023-01-01
- Abstract : This study aims to see the potential of mangrove forests for the people of Tanjung Rejo, Deli Serdang Regency, Indonesia. This qualitative study uses Miles and Huberman data analyses. The results of the study concluded that Tanjung Rejo Village has the potential to be developed to improve the quality of community welfare, namely from the agricultural sector, tourist attractions, fisheries, and accommodation sectors. The Tanjung Rejo Mangrove Forest contributes various potentials, including crane breeding, crab fishing attractions, the maintenance of immigrant bird species, Mangrove Batik Houses, and Mangrove production in the form of lunkhead, syrup, chips, jam, and snacks. Tanjung Rejo’s limitations in developing potential are due to the limited allocation of funds and marketing conditions in producing processed food from mangroves. The strategy that the local government has carried out in developing the potential of Mangrove Forests is to create tour packages for tourists visiting Tanjung Rejo and involve the community in the Sapta Pesona (seven charms) program. It is hoped that the contributions of various government and non-government parties can be carried out by participating in developing the potential of Tanjung Rejo, especially provided by the Mangrove Forest.
16. Geospatial mapping of tsunami susceptibility in Parangtritis coastal area of Yogyakarta, Indonesia
- Creator : Alwi, Mulyadi, Mutaqin, Bachtiar W.,
- Content Type : Article
- Publication Name : Arabian Journal of Geosciences
- Publication Type : Journal | 2022-07-25
- Abstract : The coastal area of Parangtritis in Yogyakarta is one of the most popular family beach recreation and cultural heritage areas, with the number of tourist visits reaching 2.8 million in 2019. On the other hand, the southern coast of Java, where Parangtritis is situated, has experienced eight tsunamis in the last 100 years. This research aims to identify the spatial distribution of tsunami susceptibility in Parangtritis, Yogyakarta. This research used analytical hierarchy process (AHP) combined with spatial multi-criteria evaluation. There are five parameters used in this research: distance from the shoreline, distance from the river, land use types, elevation, and slope. The findings revealed that Parangtritis had four levels of tsunami susceptibility: safe, less susceptible, susceptible, and more susceptible. Areas with a more susceptible class are found along the Parangtritis shore, have low elevation values, and are very close to shore and rivers. The east side of Parangtritis already has several evacuation sites, but there are none at all on the west side. Therefore, it is necessary to build a vertical evacuation site on the east side of Parangtritis as an effort of tsunami risk reduction.
17. Coastal morphodynamic analysis in Buleleng Regency, Bali—Indonesia
- Creator : Marfai, Muh Aris, Winastuti, Ratih, Wicaksono, Arief, Mutaqin, Bachtiar W.,
- Content Type : Article
- Publication Name : Natural Hazards
- Publication Type : Journal | 2022-03-01
- Abstract : Sediment as erosion product can affect shorelines, making sediment transport a key process to consider in coastal and shoreline management. Field surveys and secondary data can identify where suspended matters are distributed and deposited to analyze sediment uniformity factors: beach morphology and materials. This research set out to determine the Buleleng Regency's morphodynamic aspects based on the coastal landscape's physical characteristics and the processes acting upon each sediment cell. Field observations were conducted at five stations, from Tukad Gerokgak to Tukad Saba estuary. Jaelani's spectral transformation has been applied to analyze Total Suspended Solids using Sentinel 2A imagery. The laboratory test results of grain-size samples were processed on GRADISTAT, then the depositional environment and sediment transport direction were determined from average grain size, standard deviation, skewness, and kurtosis. Shoreline change, an indicator of coastal morphodynamics, was mapped from Landsat images in 2000, 2008, and 2019 using the Digital Shoreline Analysis System. Statistical analysis on GRADISTAT provided details on depositional environment and sediment transport and deposition based on grain-size distribution. Results indicate poorly sorted medium grain size: gravel (stone) to coarse sand, making up the sediment population from Tukad Gerokgak to Tukad Saba. Generally, sediment is deposited toward coarse, even very coarse, grain on a strongly sloping beach, and there is a high likeliness of sediment accretion. Identified morphodynamic characteristics suggest that the coastal landscape needs structural mitigation to overcome the accelerating impact of human activities and physical processes.
18. The effect of environmental awareness on motivation in adopting farming conservation techniques in the various agro-ecological zones: a case study in critical land of Java Island, Indonesia
- Creator : Maria, Irham, Hartono, Slamet, Rahayu Waluyati, Lestari,
- Content Type : Article
- Publication Name : Environment, Development and Sustainability
- Publication Type : Journal | 2022-02-01
- Abstract : The lack of efforts in promoting conservation technologies to farming communities in the last few decades made the area of critical land, particularly over Java Island, increased by 28.33% during 2009–2014. Another cause of this condition is the unsatisfactory results of the existing land management techniques. The decision to conserve degraded lands should be supported by environmental awareness among the farmers. This study aims to determine (1) the level of environmental awareness and the motivation of farmers to conserve critical lands, (2) the motivation of farmers to adopt conservation techniques, and (3) the effect of environmental awareness on motivation in adopting conservation techniques in three agro-ecological zones, i.e., the highlands, lowlands, and coastal areas. The number of respondents was 600 farmers with an equal number of samples for each zone. The analytical tools used were the crosstab, Spearman correlation, and the structural equation modeling (SEM). The first key finding is that the agro-ecological zone difference determined the level of environmental awareness and farmers’ motivation to implement conservation. The second key result is that the coastal area farmers had higher motivations to adopt conservation techniques than the other two agro-ecological zones. We also observe that the farmers who had a high level of environmental awareness will have a strong motivation to adopt conservation techniques. Overall, providing highland farmers with an understanding and practical training on conservation is essential to increase their conservation motivation that has been possessed and implemented by most of the coastal and lowland farmers.
19. Anthropogenic influences on the distribution of the Casuarina-Frankia symbiosis
- Creator : Maity, Pooja Jha, Pawlowski, Katharina,
- Content Type : Article
- Publication Name : Symbiosis
- Publication Type : Journal | 2021-07-01
- Abstract : Casuarina species are evergreen angiosperm trees native to Australia, South East Asia and the Pacific archipelagos. The genus comprises 14 confirmed species that are able to grow on a wide range of soils. Casuarina spp. are able to enter into an actinorhizal root nodule symbiosis with Frankia casuarinae , nitrogen-fixing soil actinobacteria; the symbiosis renders them independent of soil nitrogen sources. Casuarina spp. can also form symbiotic associations with ectomycorrhizal fungi (EMF) and/or arbuscular mycorrhizal fungi (AMF) for better phosphate supply. Under severe deficiency of phosphate and iron, several Casuarina spp. can form cluster roots. These trees are highly tolerant to salinity, drought, flooding and heavy metal pollution and are extensively used for the rehabilitation of degraded sites. Casuarina spp. plantations also play a significant role in prevention of soil erosion, coastal reclamation, dune stabilization, and as windbreaks in agricultural lands. Due to their multipurpose applications in agriculture and forestry, they have been widely introduced outside their native habitat especially in tropical, arid and semiarid countries across the globe. Therefore, the global distribution of Casuarina spp. has been significantly affected by anthropogenic influences. While in most of these countries, Casuarina spp. have become well-integrated into the regional farming systems, they have become invasive in other regions.
20. Land suitability analysis for maize production in Indonesia using satellite remote sensing and GIS-based multicriteria decision support system
- Creator : Habibie, Muhammad Iqbal, Noguchi, Ryozo, Shusuke, Matsushita, Ahamed, Tofael,
- Content Type : Article
- Publication Name : GeoJournal
- Publication Type : Journal | 2021-04-01
- Abstract : Maize is one of the potential crops can help in regional food production with self-sufficiency of foods in the drought prone areas of East Java in Indonesia. The purpose of this research is to determine the lands that are suitable for sustainable maize production in some selected areas of East Java by using various spatial and remote sensing datasets. The methodology was divided into three stages: first, the Landsat 8 operational land imagery satellite datasets were processed to create layers for the normalized difference vegetation index (NDVI), soil-adjusted vegetation index (SAVI) and land surface temperature. For the proposed multicriteria analysis, another seven criteria: distance from roads, distance from rivers, slope, land cover, elevation levels, soil types and rainfall, were considered. Second, a spatial analysis was performed to identify highly suitable areas for maize production using a geographical extent and multicriteria analysis. Third, the criteria were determined using land suitability information for a 5-year period. The land suitability analysis with equal weight showed that 70.8% of the land (136,663 ha) was highly suitable, 26.3% of the land (50,872 ha) was moderately suitable, and 2.8% of the land (5391 ha) was marginally suitable. On the other hand, expert knowledge was also considered using the analytical hierarchy process (AHP) and indicated that 64.9% of the land (125,216 ha) was highly suitable, 30.4% of the land (58,828 ha) was moderately suitable, and 4.5% (8603 ha) of the land was marginally suitable. The yield estimation was determined for the highly suitable areas with NDVI (R 2 = 77.81%) and SAVI (R 2 = 72.8%). The regression analysis was incorporated to predicted yield of maize. This research recommends that satellite remote sensing, GIS and AHP-based multicriteria analysis can be extended for agricultural extension services to select suitable lands for increasing maize production.
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