Universitas Diponegoro: Undip E-Journal System (UEJS) Portal
Not a member yet
9349 research outputs found
Sort by
Skenario Mitigasi Gas Rumah Kaca: Studi Kasus Pengurangan Emisi Kota Probolinggo
Get PDFPerubahan iklim berdampak luas terhadap sektor lingkungan, sosial, dan ekonomi, serta berpotensi mengganggu stabilitas pembangunan jangka panjang. Mitigasi perubahan iklim memerlukan strategi yang terintegrasi, termasuk pada tingkat lokal melalui penyusunan Rencana Aksi Daerah Penurunan Emisi Gas Rumah Kaca (RAD-GRK). Kota Probolinggo telah menyusun RAD-GRK periode 2013–2020 dan kini membutuhkan pembaruan data dan strategi untuk periode selanjutnya. Penelitian ini bertujuan untuk menghitung dan memproyeksikan emisi GRK Kota Probolinggo hingga tahun 2030, serta menyusun skenario mitigasi berbasis data. Metode yang digunakan adalah pendekatan kuantitatif melalui inventarisasi berbasis aktivitas dan proyeksi ekonomi, menggunakan kalkulator emisi ICLEI dengan tahun dasar 2019. Hasil menunjukkan proyeksi emisi GRK pada tahun 2030 sebesar 1.300.964 ton CO₂e, dengan kapasitas serapan ruang terbuka hijau (RTH) sebesar 811.879 ton CO₂e. Dari total emisi tersebut, disusun empat skenario mitigasi, dengan skenario keempat atau skenario progresif dengan penurunan emisi tertinggi sebesar 15,19% yang disepakati oleh Pemerintah Kota Probolinggo menjadi target penurunan emisinya pada 2030. Target penurunan emisi tersebut ditranslasikan melalui strategi mitigasi mencakup efisiensi energi, pemanfaatan CH₄, pengurangan pupuk nitrogen, pengurangan limbah, dan peningkatan RTH
Estimasi Cadangan Karbon Mangrove Menggunakan Citra Sentinel-2A di Desa Banjarsari Pulau Enggano
Get PDFGlobal climate change remains one of the major challenges of the 21st century, and mangrove ecosystems play a crucial role as blue carbon sinks, helping mitigate greenhouse gas emissions. However, data on mangrove carbon stocks in Indonesia’s outermost islands, such as Enggano Island, are still limited. This study aims to estimate the aboveground carbon stock of mangrove forests in Banjarsari Village, Enggano District, by integrating field measurements and Sentinel-2A imagery. Biomass was calculated using an allometric approach, while spatial carbon estimation was derived from the Normalized Difference Vegetation Index (NDVI). The results show that the mangrove area covers approximately 193,25 ha, dominated by dense vegetation (98%) with NDVI values ranging from −0.5 to 0.94. The dominant species were Rhizophora apiculata. The total above-ground carbon stock was estimated at 44,276.78 tons C. The regression between NDVI and carbon stock produced the equation y = 2.1402x − 185.36, with a coefficient of determination (R²) of 0.48 and an RMSE of 161,14 tons/ha. These findings demonstrate the significant carbon storage capacity of Enggano’s mangrove ecosystem and highlight its crucial role in supporting climate change mitigation and low-carbon development in Indonesia’s remote coastal regions. Perubahan iklim global menjadi tantangan utama abad ini, dan ekosistem mangrove berperan penting sebagai penyerap karbon biru (blue carbon) yang efektif dalam menekan emisi gas rumah kaca. Namun, informasi mengenai stok karbon mangrove di wilayah kepulauan terluar Indonesia, seperti Pulau Enggano, masih sangat terbatas. Penelitian ini bertujuan mengestimasi cadangan karbon mangrove bagian atas di Desa Banjarsari, Kecamatan Enggano, melalui integrasi data lapangan dan citra Sentinel-2A. Biomassa dihitung menggunakan pendekatan alometrik, sedangkan estimasi spasial karbon diperoleh melalui analisis indeks vegetasi NDVI. Hasil penelitian menunjukkan bahwa luas ekosistem mangrove mencapai 193,25 ha dengan dominasi kerapatan rapat (98%) dan nilai NDVI berkisar antara −0,5 hingga 0,94. Spesies dominan yang ditemukan adalah Rhizophora apiculata. Total cadangan karbon diperkirakan mencapai 44.276,78 ton C. Hubungan antara NDVI dan stok karbon menunjukkan persamaan regresi y = 2,1402x − 185,36 dengan koefisien determinasi (R²) sebesar 0,48 dan RMSE 161,14 ton/ha. Hasil ini menegaskan bahwa ekosistem mangrove Enggano memiliki potensi besar sebagai penyerap karbon, sekaligus berkontribusi terhadap upaya mitigasi perubahan iklim dan kebijakan pembangunan rendah karbon di wilayah pesisir terpencil Indonesia
PENILAIAN KEGIATAN AGROWISATA DI KAMPUNG JAMBU KRISTAL KOTA SEMARANG
Get PDFKampung Jambu Kristal merupakan kampung tematik berbasis agrowisata yang terletak di Kelurahan Wates, Kota Semarang. Kampung ini memiliki potensi sebagai wisata edukatif berbasis pertanian yang dapat mendukung ekonomi kreatif dan urban farming. Penelitian ini bertujuan untuk menilai tingkat kinerja kegiatan agrowisata di Kampung Jambu Kristal dan menganalisis aspek yang perlu ditingkatkan. Pendekatan yang digunakan adalah kuantitatif dengan teknik pengumpulan data melalui kuesioner, observasi lapangan, dan telaah dokumen. Penentuan sampel dilakukan secara purposive kepada 33 responden yang merupakan pengelola kegiatan agrowisata. Analisis data dilakukan menggunakan metode skoring dan pembobotan. Hasil penelitian menunjukkan bahwa tingkat kinerja agrowisata tergolong cukup baik dengan skor total 1616. Secara rinci, aspek sarana prasarana (skor 1,74) dan manfaat ekonomi masyarakat (skor 1,98) berada pada kategori buruk, sedangkan aspek SDM pengelola (2,16), kelembagaan (2,27), dan peran stakeholder (2,53) tergolong cukup baik. Berdasarkan temuan ini, diperlukan peningkatan pada aspek fisik seperti infrastruktur pendukung dan aksesibilitas, serta perbaikan aspek ekonomi melalui penguatan kelembagaan dan dukungan stakeholder guna meningkatkan keberlanjutan kinerja agrowisata dan kesejahteraan masyarakat
Growth Mechanism and Carbon Sequestration of Gracilaria verrucosa
Get PDFGracilaria verrucosa, a commercially valuable red macroalga, plays a pivotal role in coastal aquaculture and carbon sequestration. This study investigates the effects of varying initial seedling weights (50 gram, 75 gram, 100 gram, and 125 gram/tie) on biomass yield, specific growth rate (SGR), and carbon sequestration over a 49-day cultivation period. Conducted in a floating raft system under controlled coastal conditions in South Sulawesi, Indonesia, the experiment followed a completely randomized design (CRD) with three replications per treatment. Biomass was harvested at seven-day intervals and assessed for dry weight, growth rate, and carbon composition using standardized methods and elemental analysis protocols. The results indicate that the 125 grams/tie treatment yielded the highest biomass, suggesting that larger initial weights enhance growth through enhanced nutrient uptake. However, the highest SGR and carbon sequestration were recorded in the 50 grams/tie treatment, highlighting the impact of planting density on physiological performance and carbon sequestration. The 100 grams/tie treatment presented the most balanced profile, maintaining high biomass while avoiding significant declines in SGR or carbon sequestration. These findings reveal a critical trade-off between economic and ecological outcomes, with implications for seaweed-based climate mitigation strategies and sustainable aquaculture design. Optimizing planting density can improve both yield and ecosystem services, aligning cultivation strategies with environmental sustainability objectives
PERSEPSI PELAKU USAHA MENENGAH KECIL DAN MIKRO TERHADAP ASURANSI SYARIAH
Get PDFMSME Actors have an important role in economic development and growth. This research aims to analyze the perceptions of small entrepreneurs regarding sharia insurance among MSMEs in Argomulyo District, Salatiga. This type of research is descriptive with a quantitative approach. Data collection was carried out through a questionnaire with a Likert scale. The research was conducted in Argomulyo District with a sample of 30 MSMEs in Noborejo Village, Argomulyo Salatiga District, sampling was carried out using a purposive sampling technique. The research results concluded that MSME Actors have a positive perception of sharia insurance.
The Effect of Astaxanthin Addition in Commercial Feed on Color BrightnessLevel and Growth of Koi Fish (Cyprinus carpio)
Get PDFIkan koi (Cyprinus carpio) merupakan salah satu ikan hias yang banyak diminati karena keindahan bentuk badan dan warnanya yang beranekaragam, memiliki prospek usaha yang bagus, dan permintaan yang terus meningkat dari tahun ke tahun dengan produksi yang dihasilkan mencapai 36% pada tahun 2015-2019. Pola dan kecerahan warna kulit yang cemerlang dari koi merupakan alasan ikan hias ini diminati. Upaya yang dapat dilakukan untuk mempertahankan dan meningkatkan kualitas kecerahan warna pada koi yaitu dengan cara memberikan pakan yang mengandung sumber pigmen warna. Salah satu sumber pigmen warna yaitu astaxanthin Astaxanthin merupakan salah satu senyawa dari kelompok pigmen karotenoid yang dapat digunakan sebagai suplemen pakan untuk meningkatkan warna ikan. Tidak hanya untuk meningkatkan kecerahan warna pada ikan, penambahan astaxanthin juga memberi pengaruh terhadap pertumbuhan.Tujuan penelitian ini adalah untuk menganalisis pengaruh penambahan astaxanthin dalam pakan komersil terhadap tingkat kecerahan wana dan pertumbuhan ikan koi,Penelitian ini menggunakan metode eksperimen, rancangan acak lengkap (RAL) yang terdiri atas 5 perlakuan dengan 3 kali ulangan. Perlakuan yang digunakan adalah perlakuan masing-masing dengan penggunaan dosis Astaxanthin 0, 50, 100, 150, dan 200 mg/kg pakan. Pengukuran kecerahan warna menggunakan Toca Color Finder (TCF) yang kemudian diberi skor. Ikan uji yang digunakan adalah ikan koi jenis karasi yang memiliki warna dasar tubuhnya kuning orange dengan bobot rata-rata 10-14 gram/ekor. Ikan koi dipelihara dalam toples plastik berukuran 5 liter dengan padat penebaran 3 ekor/liter. Pemeliharaan dilakukan selama 30 hari dengan metode pemberian pakan at satiation.Hasil penelitian menunjukkan bahwa penambahan astaxanthin dalam pakan komersil memberikan pengaruh nyata (P0,05) terhadap nilai kelulushidupan (SR) ikan koi. Berdasarkan hasil tersebut didapatkan dosis terbaik penambahan astaxanthin yaitu pada dosis 200 mg/kg (Perlakuan 5) yang menghasilkan nilai rata-rata kecerahan sebesar 15,83±0,76cd, FCR sebesar 2,76±1,00a g, EPP sebesar 30,24±5,37cd%, PER sebesar 35,73±3,27b%, dan nilai RGR sebesar 0,68±0,19c% per hari
Analysis of Qr Code Technology Acceptance in Cocoa Production Forecasting Based on Motivation, Farmer Characteristics, and Innovation Nature
Get PDFQR Code technology is used to help record cocoa production forecasts efficiently and accurately, so that farmers can easily update data in real-time. However, in its application, farmers still record production forecasts manually, which often results in discrepancies between forecasts and actual results and takes a long time in the process. This study aims to analyze QR Code technology acceptance among farmers assisted by PT X in the process of forecasting cocoa production in terms of the influence of motivation, farmer characteristics, and the nature of the innovation contained in the technology. This study used a quantitative verification method, supported by the SEM-PLS analysis tool. Samples were taken using a census method from 108 cocoa farmers assisted by PT X in Bulungan Regency. The results of the study showed that motivation, farmer characteristics, and the nature of innovation have a direct, positive and significant effect on QR code technology acceptance. Furthermore, QR Code technology acceptance is positively and significantly influenced by farmer characteristics through motivation as a mediating variable. However, the nature of innovation does not have a positive and significant effect on QR Code technology acceptance through motivation, and the nature of innovation also does not have a direct, positive and significant effect on motivation. These findings confirm that farmer motivation and characteristics need to be improved to increase QR Code technology acceptance. This will enable production forecasting to generate accurate data to inform cocoa production decisions and ensure the availability of cocoa bean raw materials for processors
Agricultural Extension Governance and Services in Responding to Problems of the Agricultural Sector and Extension Institutions
No full textAgricultural extension services that are currently following the decentralization era require a participatory extension approach in line the needs of farmers in each region. This mixed-method study looked at the condition of agricultural extension governance and services at local level which characterized by agricultural resource based on economic development, namely Purworejo Regency, Central Java Province, in responding to problems in the agricultural sector and extension institutions. The research results show that the governance of extension services in Purworejo Regency faces the issue of lack of capacity building o extension agents with excessive workload and minimal staff. In contrast, extension agents have a pile of tasks that must be done individually, without inadequate support on facilities and sufficient budget to support extension services to farmers. The impact of climate change, such as an increase in pests and plant diseases and water crisis, have become major problems in the agricultural sector. This study suggests a policy and program to build extension agents' capacity and a more organized governance of extension institutions
From knowledge to decision: A PLS-MGA investigation of halal fashion purchase behaviour across generation in Indonesia
Get PDFHalal fashion consumption in Indonesia is rapidly evolving at the intersection of religious identity, modern lifestyle, and ethical consumerism. However, prior research has largely emphasized religiosity, with limited attention to cognitive and lifestyle dimensions across generational cohorts. This study examines the structural relationships between consumer knowledge, halal awareness, lifestyle orientation, and halal fashion purchase decisions, while exploring generational differences among Muslim consumers using Partial Least Squares Multi-Group Analysis (PLS-MGA). A cross-sectional survey of 504 Muslim respondents from Generations X, Y, and Z was analyzed using WarpPLS 8.0. Results indicate that consumer knowledge strongly influences both halal awareness and lifestyle, but has a weak direct effect on purchase decisions. Lifestyle emerges as the strongest predictor of halal fashion consumption. PLS-MGA reveals significant generational differences, particularly in the effects of knowledge on lifestyle and awareness on purchase decisions, with Gen Z showing the strongest behavioral alignment. These findings highlight the need for generation-specific marketing: Gen Z responds to lifestyle and ethical identity, Gen Y to value integration between modernity and tradition, and Gen X to certification and institutional cues. This study advances halal consumer behavior theory by integrating lifestyle as a core construct and validating generational variations in a Muslim-majority context
Prognostic Factors of Severe Dengue Based on Individual Characteristics And Laboratory Examination: A Scoping Review
Get PDFIntroduction: Dengue fever is a major health problem in 48 countries worldwide. Complications and death can occur in patients who experience shock or prolonged infection. Dengue severity can be predicted based on individual characteristics and laboratory test results. However, previous studies have reported different prognostic factors. This review aimed to identify the characteristics and laboratory findings associated with severe dengue.Methods: The inclusion criteria were observational studies published between January 2016 and May 2025 in the Scopus, PubMed, and Google Scholar databases, written in Indonesian or English, and available in full texts. Articles other than observational studies and those that did not provide PR/OR/RR were excluded from the study. Thirteen studies were eligible for assessment. This study followed the Preferred Reporting Items for Systematic Literature Reviews and Meta-Analyses (PRISMA) guidelines.Results: Patient characteristics that served as prognostic factors for severe dengue included male sex, abnormal nutritional status, age 15–49 years, presence of comorbidities, and receiving health care for more than 1–2 days of hospitalization. Laboratory findings that act as prognostic factors include hemoconcentration, thrombocytopenia, leukopenia, and low hemoglobin levels. Based on patient characteristics, the dominant prognostic factors were comorbidities, nutritional status, and duration of healthcare. According to the laboratory findings, the dominant factors were hemoconcentration and thrombocytopenia.Conclusion: The dominant prognostic factors for severe dengue are comorbidities such as hypertension, cardiovascular disease, and hemoconcentration. Further studies using a robust and comprehensive methodological approach are needed to validate the relationship between these prognostic factors