Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)
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Phosphorus Fractionation in The Sediment of Kendari Bay, Southeast Sulawesi, Indonesia
Full text linkInformation about the chemical structure of the phosphorus (P) fraction in sediments is very important for identifying the bioavailability of P and eutrophication in marine ecosystems. Sediment as a source of P has an important function in P adsorption in waters. To estimate the phosphorus load in water bodies, it is required to define the fraction of phosphorus compounds. This study purposed to evaluate the composition of phosphorus speciation in sediments of Kendari Bay and evaluate their possible contributions to the eutrophication of the coastal ecosystem. P fractionation was examined by chemical extraction and sequencing methods. Sediment characterization was conducted by gravimetry, hydrometry, and spectrophotometry methods. The study result found the total P concentration in the sediment ranged from 0.30 to 0.41 mg/g. Phosphorus content in exchangeable P (Exc-P), Fe-P, Al-P, Ca-P, and organic P (OP) contributed 1.8%, 12.7%, 1.5%, 63.1%, and 21.5% of total P (TP), respectively. We found significant positive correlations between Exc-P, FeP, Al-P, and OP and finer sediment and organic matter. Exc-P and OP are bioavailability (BAP) fractions that potentially release overlying water, contributing 10–35% to TP
Ecotourism Stakeholders Analysis in Bodogol Resort, Gunung Gede Pangrango National Park, West Java
Full text linkTourist visits to Bodogol Resort, Gunung Gede Pangrango National Park (GGPNP), have experienced a downward trend from to 1998–2021. In addition, the Bodogol Resort is directly adjacent to the Lido Special Economic Zone (SEZ) with its main activity of tourism. The level of interest and influence of stakeholders involved in ecotourism development at Bodogol Resort and their role determine progress in ecotourism development. This study aims to assess the stakeholders and their role in ecotourism development at Bodogol Resort. Data collection was performed through observations, interviews, and document deepening. The analyses were performed both quantitatively and qualitatively. Stakeholder analysis was carried out to identify stakeholders, classify and map stakeholders, and analyze the relationships between stakeholders. Sixteen stakeholders related to ecotourism development in the Bodogol Resort were identified. The stakeholder mapping results are three key players, five subjects, and eight crowds. This shows that the stakeholders involved have not played as optimal roles as they should, the division of roles of who does what. Bodogol Resort is one of the key players with the highest level of influence and interest. The results of thematrix analysis of the relationships between stakeholders show that communication, coordination, and cooperation are low. 
Abundance Analysis of Microplastics and Community Consumption In Batik Mussels (Paphia undulate) in Water Regions (Study in Banyuurip Village, Ujung Pangkah District, Gresik Regency)
No full textMikroplastik merupakan sampah plastik yang terdegradasi oleh sinar matahari menjadi partikel kecil dan mempunyai ukuran < 5 mm. Kerang batik (Paphia undulata) mempunyai sifat filter feeder, enzim detoksifikasi yang sedikit, dan termasuk sedentary animal sehingga hewan ini sangat memungkinkan untuk terkontaminasi mikroplastik. Penelitian ini bertujuan untuk mengidentifikasi kelimpahan mikroplastik dan tingkat konsumsi masyarakat pada kerang batik (Paphia undulata) di wilayah perairan Banyuurip Ujungpangkah Kabupaten Gresik. Hasil penelitian ini menunjukkan bahwa terdapat 3 bentuk mikroplastik yang ditemukan yaitu fiber, fragmen, dan filamen dengan didominasi oleh fiber sebanyak 100 partikel/ekor. Fiber diakibatkan oleh aktivitas nelayan dan termasuk bentuk yang mudah terakumulasi dalam pencernaan biota. Warna biru menjadi warna yang dominan ditemukan di semua lokasi. Partikel mikroplastik yang ditemukan memiliki ukuran dengan rentang antara 0,083 – 4,619 mm. Kelimpahan mikroplastik terbanyak berada di lokasi 2 sebanyak 0,78 partikel/ekor. Hasil wawancara kepada 30 responden menyatakan bahwa mayoritas mengkonsumsi kerang batik dalam frekuensi mingguan sebanyak 15 orang dengan rata-rata konsumsi <50 g/hari sebanyak 18 orang dan >50 g/hari sebanyak 12 orang.Microplastics are plastic waste that is degraded by sunlight into small particles and has a size of <5 mm. Batik mussels (Paphia undulata) have filter feeder properties, few detoxification enzymes, and are sedentary animals so these mussels are very likely to be contaminated with microplastics. This study aims to identify the abundance of microplastics and the level of community consumption of batik mussels (Paphia undulata) in the waters of Banyuurip Ujungpangkah, Gresik Regency. The results of this study showed that there were 3 forms of microplastics found in this research, there are fiber, fragments, and filaments the dominant form is fiber with a total of 100 particles/head. Fiber is caused by the activities of fishermen and is a form that easily accumulates in the digestion of biota. Blue is the dominant color found in all locations. The microplastic particles found ranged in size from 0.083 - 4.619 mm. The highest abundance of microplastics was in location 2 with 0.78 particles/head. The results of interviews with 30 respondents stated that the local community consumed batik mussels at a weekly frequency of 15 people with an average consumption of <50 g/day for 18 people and >50 g/day for 12 people
Environmental Dynamics in The Sumatran Coffee Landscapes: Opportunities and Challenges Through Spatial Perspectives
Full text linkIndustri kopi di Indonesia, khususnya di lanskap Sumatera menyumbangkan kontribusi yang penting terhadap ekonomi nasional yang berdampak pada pertumbuhan regional. Namun, lanskap ini mengalami ancaman lingkungan dari deforestasi yang mengakibatkan kehilangan hutan primer. Ancaman deforestasi disertai dengan krisis iklim memberikan tantangan terhadap perkebunan kopi yang ada. Kajian ini melakukan analisis geospasial untuk meninjau secara komprehensif tantangan dan peluang bagi petani kecil di Sumatera dari kopi arabika (Aceh tengah) dan robusta (Tanggamus). Penelitian ini menunjukkan bahwa perkebunan kopi monokultur yang teridentifikasi di Aceh Tengah dan Tanggamus berturut-turut sebesar 23,453 ha dan 43,991 ha. Selain itu, kajian ini juga menemukan agroforestri kopi campur dengan luasan sekitar 132,569 ha di Tanggamus dan 19,450 ha di Aceh Tengah. Tanggamus dan Aceh Tengah memiliki areal kesesuaian kopi yang sangat baik. Kami juga menemukan bahwa sebesar 86% kopi yang saat ini ada di Aceh Tengah terindikasi lolos standar EUDR. Selain itu, kami juga menemukan bahwa sekitar 94% kopi robusta di Tanggamus terindikasi lolos standar EUDR sehingga dapat meningkatkan kemampuan pasar bagi petani kopi untuk pasar Eropa.The coffee industry in Indonesia, particularly in the Sumatran landscape, emerges as a vital contributor to the nation\u27s economy, impacting regional growth. Nevertheless, this landscape faces ecological threats from rapid deforestation, resulting in a substantial loss of primary forest cover. This historical deforestation along with climate crisis presents challenges for coffee plantations. The study employs geospatial analysis to comprehensively outline challenges and opportunities for smallholder coffee farmers in Sumatra, particularly in the Arabica (Central Aceh) and Robusta (Tanggamus) landscapes. The study shows non-shade coffee plantations covered approximately 23,453 ha in Central Aceh and 43,991 ha in Tanggamus. Additionally, mixed agroforestry areas were prevalent, comprising about 132,569 ha in Tanggamus and 19,450 ha in Central Aceh. Tanggamus and Central Aceh have become favorable areas for Robusta coffee and Arabica coffee, respectively. One significant opportunity identified for coffee development in Central Aceh is that 86% of existing coffee farms already adhere to EUDR. Furthermore, 94% of existing coffee farms in Tanggamus meet EUDR standards, opening doors for more farmers to access the European market
Partial Least Square-Structural Equation Modeling as a Model of Community Participation in Macroplastic Waste Management in Cikapundung River (Case Study: Baleendah District) Bandung Regency
No full textSampah menjadi isu lingkungan karena jumlahnya yang semakin meningkat. Jenis sampah yang saat ini menjadi permasalahan penting adalah sampah plastik, karena dapat membahayakan makhluk hidup dan lingkungannya. Penelitian ini bertujuan untuk menganalisis faktor-faktor partisipasi masyarakat yang berpengaruh terhadap pengelolaan sampah. Penelitian ini menggunakan metode wawancara dan pengisian kuesioner sebanyak 50 responden di Kecamatan Baleendah. Data yang telah terkumpul dianalisis menggunakan metode Structural Equation Modeling-Partial Least Square (SEM-PLS) dengan pendekatan beberapa variabel laten yang masing-masing dilengkapi indikatornya. Evaluasi model SEM-PLS diuji melalui Model Pengukuran dan Model Struktural. Hasil penelitian menunjukkan bahwa pada model pengukuran seluruh indikator valid dan reliabel dalam mengukur konstruk yang dibangun. Pada model struktural hasil pengujian hipotesis dengan metode bootstrapping dapat disimpulkan bahwa variabel Faktor Eksternal dan Penanganan Sampah secara signifikan memengaruhi variabel Pengelolaan Sampah, variabel Pengelolaan Sampah secara signifikan memengaruhi variabel Dampak Pengelolaan Sampah, sedangkan variabel Pengurangan Sampah memengaruhi secara tidak signifikan terhadap variabel Pengelolaan Sampah. Waste is an environmental issue owing to its increasing amount. The type of waste that is currently an important problem is plastic waste, which can endanger living things and the environment. This study aimed to analyze the community participation factors that affect waste management. This study used interview methods and completed questionnaires from as many as 50 respondents in Baleendah District, West Java Province. The collected data were analyzed using the Partial Least Square-Structural Equation Modeling (PLS-SEM) method with the approach of several latent variables, each of which was equipped with indicators. The PLS-SEM model was evaluated using the Outer Model and Inner Models. The results showed that, in the measurement model, all indicators were valid and reliable for measuring the constructed construct. In the structural model of the results of hypothesis testing with the bootstrapping method, it can be concluded that the variables of External Factors and Waste Management significantly affect the variables of Waste Management; the variable of Waste Management significantly affects the variable Impact of Waste Management, while the variable of Waste Reduction insignificantly affects the variable of Waste Management. The results of this study can be used as recommendations for implementing strategies to increase community participation in plastic waste management
Bibliometric Analysis of Tourism Development Based on Disaster Mitigation Through the Scopus Database
Full text linkPerkembangan industri pariwisata dunia dalam kehidupan sehari-hari masih berfokus pada keindahan daya tarik wisata dan pendapatan perekonomian suatu negara, namun pada saat yang sama masih mengabaikan kondisi krisis seperti bencana di kawasan wisata. Oleh karena itu, mitigasi bencana diharapkan dapat memberikan edukasi kepada masyarakat dan wisatawan agar dapat bersiap jika terjadi bencana. Metode penelitian menggunakan analisis bibliometrik, dan pengambilan literatur dilakukan secara cermat menggunakan database Scopus pada tanggal 22 Agustus 2023 dengan strategi pencarian khusus, dengan topik pariwisata dan mitigasi bencana. Berdasarkan hasil penelusuran, ditemukan sekitar 48 artikel. Hasil penelitian menunjukkan negara yang paling banyak menghasilkan tulisan ilmiah tentang pariwisata dan mitigasi bencana adalah india dengan 49 artikel, disusul China dengan 16 artikel, Amerika Serikat dengan 12 artikel, Jepang dengan 5 artikel, India dan Inggris dengan 4 artikel. . Hasil tersebut menunjukkan bahwa penulis Indonesia dapat berkontribusi secara global pada tema pariwisata dan mitigasi bencana.The development of the world tourism industry in daily life still focuses on the beauty of tourist attractions and the economic income of a country. Still, it ignores crisis conditions, such as disasters in tourist areas. Therefore, disaster mitigation is expected to educate the public and tourists to prepare them for a disaster. The research objective is to universally analyze the development of tourism research topics based on disaster mitigation. The research method used was bibliometric analysis. Bibliometric analysis helps identify the distribution of articles published in Scopus-indexed journals, authors, institutions, citations, countries, topic trends, keywords, and networks between authors. The research results show that the disaster mitigation process refers to structural and nonstructural mitigation actions, such as infrastructure development, increasing public knowledge about disaster mitigation, creating disaster evacuation routes, and strengthening regulations. Meanwhile, the results of the bibliometric analysis show that the country that produces the most scientific writing on tourism and disaster mitigation is Indonesia, with 49 articles, followed by China with 16 articles, the United States with 12 articles, Japan with 5 articles, India and the UK with 4articles. These results indicate that Indonesian writers have contributed globally to tourism and disaster mitigation. 
Local Wisdom of Pest Attack Control in Residential Areas (Study Case: Gunung Meja Nature Park, West Papua, Indonesia)
Full text linkHealthy plants can be seen from good morphology and are not even attacked by pests. Local community knowledge of seeing symptoms and signs of plant stature will be very helpful, especially in dealing with problems related to plant growth. This study aims to determine the form of local wisdom in dealing with plant pests in residential areas around the Gunung Meja Nature Park. The method used is observation and interviews related to the identification of forms of attack, the level of pest attack on plants, and their handling by the community. The research object is focused on multipurpose tree species that produce wood and non-timber trees such as fruits that have high economic value. The results showed that the number of plant species in Anggori was 137 plants with a diversity index (H) of 2.956 which was included in the medium category. Plants in Anggori also suffered damage caused by pests with an attack frequency (FS) of 50% and attack intensity (IS) on plants of 21%. Pest control has been carried out by the community traditionally, such as 12% pruning, 8% logging, 20% fumigation, 8% stove ash and 16% soap to eradicate pest attacks
The Estimation of Economic Valuation on Carbon Sequestration of Agroforestry Land System: Estimasi Nilai Ekonomi Serapan Karbon pada sistem agroforestri di KPH Bogor
Full text linkPeran Perhutani dan petani lokal dalam mengembangkan agroforestri di KPH Bogor penting dalam upaya mitigasi iklim berbasis penyerapan karbon. Areal yang luas di bawah kewenangan Perhutani dengan masyarakat lokal di sekitar kawasan tersebut membangun kemitraan berbasis agroforestri sebagai bagian dari pengelolaan hutan lestari. Perbedaan komposisi tanaman pada tujuh sistem agroforestri di KPH Bogor ditemukan pada masing-masing BKPH. Petani menyesuaikan tanaman multiguna yang ditanam dengan tanaman induk Perhutani yang lebih dominan. Stok karbon yang tersimpan di lahan agroforestri dapat meningkatkan pendapatan petani berdasarkan harga karbon, seperti nilai sosial dan ekonomi karbon. Potensi peningkatan karbon tahunan rata-rata yang dihitung berdasarkan stok karbon agroforestri di atas permukaan pada 7 petak contoh berkisar 2,26 – 66,65 ton CO2e per hektar, sedangkan pada 2 sistem lahan monokultur berkisar 13,65 – 18,29 ton CO2e per hektar. Peningkatan karbon dalam sistem pengelolaan lahan agroforestri lebih baik dibandingkan dengan hutan monokultur, karena memiliki keragaman tanaman dengan umur yang berbeda. Dari segi pendapatan karbon, semakin luas lahan agroforestri yang dikelola petani, semakin tinggi pula pendapatan karbon yang diterima. Dengan menggunakan metode transfer manfaat selama periode mitigasi 20 tahun, diperkirakan pendapatan meningkat 1,8 kali dari penjualan serapan karbon pada tingkat inflasi 3%.The role of Perhutani and local farmers in developing agroforestry in Bogor Forest Management Unit (FMU) is important for carbon sequestration-based climate mitigation efforts. Different compositions of the plants in seven agroforestry systems in four part of Bogor FMU. Farmers adjust the multipurpose crops planted with Perhutani main plants, which are more dominant. The potential mean annual carbon increment based on aboveground carbon stock of agroforestry is between 2.26 to 66.65 tonnes per hectare, while in 2 monocultures land system is between 13.65 to 18.29 tonnes per hectare. The carbon increment in agroforestry systems is better than monoculture because of plant diversity and different ages. Then, carbon revenue using carbon pricing set by the World Bank-FCPF Program in East Kalimantan is in the range of IDR 1,547,325 to IDR 49,292,405 per hectare, using the Social Cost scheme in the range IDR 12,997,535 to IDR414,056,204 per hectare and using domestic carbon tax is range IDR 635.017 to IDR 20,229,441 perhectare. Regarding carbon revenues, the wider the agroforestry land managed by farmers, the higher the carbon income received. Using the benefit transfer method over a 20-year mitigation period, an estimated 2.19 times increase in carbon revenues is obtained at an inflation rate of 4%
Paddy fields classification using a 2-dimensional scatterplot of growth phenological features from Sentinel-1 data
Full text linkRice plays an essential role in ensuring the food security of Indonesia. Hence, rice (paddy) field monitoring using synthetic aperture radar (SAR) satellite data is critical, particularly in tropical regions. This study presents a new algorithm to detect paddy fields in Subang, West Java, using Sentinel-1 SAR with a 12-day revisit acquisition. Three temporal phenological features of paddy growth were used, namely, the minimum and maximum backscatter, as well as their differences. Paddy fields were discriminated from other land covers using a simple thresholding algorithm based on their specific pattern of low minimum, high maximum, and high difference of vertical transmithorizontal receive polarization (VH) backscatter on a 2-dimensional (2D) scatter plot. The results showed that the proposed algorithm had an accuracy of 94.02%, comparable to that of the random forest algorithm and other studies using 3-dimensional (3D) parameters. The proposed algorithm reduces the dimensionality from 3D to 2D and is practical for mapping and monitoring paddy fields. In this context, the application of the algorithm to the surrounding regions of Karawang, Indramayu, and Bekasi achieved high accuracy rates of 93.37%, 92.87%, and 88.13%, respectively
Performance Evaluation for Surface Run off to Drainage System Normalization at Campus in Jakarta, Indonesia
Full text linkDrainage is an infrastructure that distributesrainwater from one location to another. On the campus of the Faculty of Engineering at Pancasila University, there are several points of water inundation. Several inundation points were identified based on direct monitoring and measurements at the study site. This study aimed to evaluate the effectiveness of an existing drainage system on campus. The design flood discharge was calculated using a rational method with a five-year return period. From the calculation of hydrology, hydraulics, and comparative analysis of the existing dimensions with the design flood discharge, it was determined that the eight existing channels were unable to accommodate the design flood discharge. Therefore, there are two alternatives for reducing run off discharge. The first is to redesign the drainage channel to improve its size of the drainage channel with a shape that follows the existing shape. The modification involved adjusting the channel height to meet the specified flood discharge requirements. The second alternative was the planning of the infiltration wells. These dimensions are based on the design run off flood discharge, and from the calculation results, the dimensions of the infiltration wells are 1.5 meters in diameter and 2.5 meters high, and four infiltration wells are needed is 4 infiltration wells to reduce the discharge of 1,638 m3/second.