Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)
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Ecological Index and Aboveground Biomass Carbon Value on Burn SwampForests After Rehabilitation
No full textRehabilitation efforts were conducted in 2018 and 2020 to restore, maintain, and enhance forest and land functions following the 2015 fire on forest area with special purpose (KHDTK) Tumbang Nusa, Central Kalimantan. This study aims to determine the characteristics of stand structure, quantitative ecological values, aboveground biomass values, and preliminary projections of rehabilitation plant valuation in post-fire peat forest ecosystems. Study area was conducted in two rehabilitation blocks in 5 and 7 years old after rehabilitation. Vegetation analysis employed a nested sampling method, utilizing a plot size of 60 x 60 m, with Block I contain three plots (27 subplots) and Block II containing eight plots (72 subplots). Vegetation inventory and four carbon pool measurements were carried out on the understorey, seedlings, saplings, poles, and trees. The stand density value in Block I is 379 stems ha–1 with a basal area of 21.18 m2 ha–1 , while in Block II it is 503 stems ha–1 and 11.27 m2 ha–1 . The stands have good ecological value and stable vegetation, with a medium-scale species diversity level (H\u27 = 1.53–2.80), a low-scale species dominance level (D = 0.10–0.42), commonly a high species richness value (R = 3.07–6.01), and medium to high species evenness values. The composition of rehabilitation plants are similar, but Block I has a higher proportional basal area of 3.72%. The projection of aboveground carbon biomass is 70.7 ton ha–1 and 77.7 ton ha–1 , respectively. As a preliminary study, the effectiveness of the rehabilitation valuation approach can be assessed by the productivity and quantitative ecology.
Conservation of Soil Physical and Chemical Properties by Application of Compost and Biochar in Tambakrejo Village, Malang Regency
Full text linkSoil degradation is often indicated by reduced land productivity, which affects soil physical, chemical, and biological properties. The application of compost and biochar fertilizer serves as an alternative method for improving the physical and chemical properties of the soil. This study was conducted to determine the effect of applying compost and biochar to the soil on its physical and chemical properties. The research was conducted in Tambakrejo Village, Sumbermanjing Wetan, South Malang. The study employed a Randomized Complete Block Design (RCBD) with four treatments: control (P0), 15 kg of compost and 5 kg of biochar (P1B3), 10 kg of compost and 10 kg of biochar (P2B2), and 5 kg of compost and 15 kg of biochar (P3B1). The results indicated that the most effective application of compost and biochar in improving bulk density, soil temperature, Corganic, and available P content of the soil was the P3B1 treatment. The composition of compost and biochar P2B2 was found to increase soil pH. Additionally, the composition of P1B3 increased soil moisture, total N, and total K. Based on the results, the application of compost and biochar can reduce soil bulk density, improve soil temperature, pH, and moisture, as well as increase soil Corganic and NPK content. 
Evaluation of MiniPlast Filters for Microplastic Removal from Laundry Wastewater
Full text linkPolusi mikroplastik dianggap sebagai ancaman serius karena dikaitkan dengan potensi kerusakan lingkungan dan kesehatan manusia serta sifat bioakumulasi dan risiko ekologisnya. Muncul inisiatif untuk membuat filter yang memiliki spesifikasi teknis untuk produk berkualitas. MiniPlast Filter merupakan inovasi filter jenis terbaru yang menerapkan sistem berkelanjutan dalam penggunaannya di masyarakat. Penelitian ini bertujuan untuk mengetahui sistem kerja filter MiniPlast dalam menghilangkan mikroplastik dan efisiensi menghilangkan mikroplastik menggunakan alat MiniPlast Filter. Penelitian ini menggunakan variabel bebas yaitu penggunaan Filter MiniPlast dalam menyaring mikroplastik dan variabel terikat yaitu perlakuan Filter MiniPlast mengenai pengukuran identifikasi hasil mikroplastik pada pencucian air limbah yang mempunyai efisiensi penyisihan sebesar 97,71%. Filter MiniPlast ini dapat mengurangi kemungkinan penyebaran mikroplastik dengan sukses dan efektif. Berdasarkan pengamatan mikroskop dengan berat kering 7,0 kg, pakaian yang dicuci dengan menyaring air mengandung mikroplastik dengan warna mikroplastik yaitu kuning, ungu, merah, hitam, biru dan hijau, ditemukan pada pengamatan menggunakan mikroskop binokular cahaya dengan kecepatan 10x. lensa pembesar di Laboratorium Botani Universitas Halu Oleo diketahui rata-rata jumlah mikroplastik tanpa menggunakan MiniPlast Filter adalah 4710 MPs, dan rata-rata jumlah mikroplastik yang menggunakan MiniPlast Filter adalah 390 MPsMicroplastic pollution is considered a serious threat because it is associated with potential environmental and human health damage due to its bioaccumulation properties and ecological risks. An initiative emerged to make filters that have technical specifications for quality products. MiniPlast Filter is the newest type of filter innovation, implementing a sustainable system in its use in society. This research aims to determine the working system of the MiniPlast Filter in removing microplastics and the efficiency of eliminating microplastics using the MiniPlast Filter tool. The study examines the effect of using the MiniPlast Filter (independent variable) on reducing microplastics in laundry wastewater (dependent variable). This MiniPlast Filter can reduce the possibility of successfully and effectively spreading microplastics. Based on microscope observations with a dry weight of 7.0 kg, clothes washed by filtering water containing microplastics with the colours of microplastics, namely yellow, purple, red, black, blue and green, were found in observations using a light binocular microscope with a 10x magnification lens at the Botany Laboratory, Halu Oleo University. It was found that the average number of microplastics without using the MiniPlast Filter was 4,710 MPs, and the average number using the MiniPlast Filter was 390 MPs. 
Spatial Distribution and Ecological Risk of Microplastic Contamination in River Water Near a Landfill Leachate Disposal Area: A Case Study of Supit Urang Landfill, Malang City, Indonesia
No full textDalam beberapa tahun terakhir, mikroplastik telah teridentifikasi dalam lindi yang dapat merusak ekosistem perairan. Tempat pembuangan akhir Supit Urang di Malang mengalirkan lindi ke Sungai Sumber Beling, yang mengalir melalui daerah pemukiman di Mulyorejo dan Bandulan. Hal ini menimbulkan bahaya signifikan karena rendahnya kesadaran masyarakat tentang pencemaran mikroplastik dari lindi di sungai, terbukti dengan masih bergantungnya penduduk pada air sungai untuk kegiatan seperti memancing, mencuci, dan mandi. Oleh karena itu, kami menyelidiki kelimpahan dan karakteristik mikroplastik di Sungai Sumber Beling dan menilai tingkat risiko ekologisnya. Sembilan sampel diambil untuk menentukan kelimpahan dan karakteristik mikroplastik melalui identifikasi mikroskopik dan analisis kimia menggunakan ATR-FTIR. Penilaian risiko ekologis dilakukan dengan menggunakan Polymer Hazard Index (PHI), Pollution Load Index (PLI), dan Potential Ecological Risk Index (PERI). Hasilnya menunjukkan bahwa kelimpahan mikroplastik tertinggi berada dalam kisaran 63,00-240,00 partikel/L, dengan bentuk yang didominasi oleh film (48,30%) dan fragmen (42,98%). Polimer yang ditemukan di semua sampel adalah PE dan PP, kecuali PET yang hanya ditemukan di P5 dan P6 yang terletak di area padat penduduk. Penilaian risiko ekologis secara umum menunjukkan risiko minor kecuali untuk P5 yang menunjukkan risiko tinggi. Data ini menekankan perlunya penerapan langkah-langkah efektif untuk mengurangi dampak lindi yang dibuang ke sungai dan aktivitas manusia yang intensif terhadap pencemaran mikroplastik, serta menawarkan wawasan untuk memajukan penelitian ekotoksikologi, pengendalian polusi, dan perumusan kebijakan tentang mikroplastik.Microplastics (MPs) in landfill leachate are a critical environmental challenge due to their persistence in natural environment, where they resist degradation and pose long-term environmental risks, including harm to aquatic ecosystems and human health. Specifically, Supit Urang Landfill in Malang discharges leachate containing microplastics into the Sumber Beling River, which flows through the densely populated areas of Mulyorejo and Bandulan. This poses a significant risk, as public awareness of microplastic pollution remains low, and residents continue using the river for activities like fishing, washing, and bathing. This study examines the distribution and properties of microplastics in Sumber Beling River and assessed their ecological risk levels. Nine sampling points were chosen to represent pollution sources, upstream quality controls, and downstream sites impacted by pollution. We employed ATR-FTIR spectroscopy for its high accuracy in identifying microplastics, along with an ecological risk assessment using PHI, PLI, and PERI. The results revealed that microplastic abundance varied between 63 and 240 particles / L, with the highest concentration found in densely populated areas (TS.7). The predominant shapes of MPs were films (48.30%) and fragments (42.98%), with polypropylene (PP) and polyethylene (PE) being the most prevalent polymers detected. Although the overall ecological risk was low, site P5, located in the densely populated residential area of Mulyorejo, exhibited a high risk level. These findings underscore the urgent need for targeted interventions in densely populated areas to enhance waste disposal and raise community awareness regarding microplastic pollution. 
Carbon Footprint of Elephant Mammal Management in Taman Margasatwa Ragunan Using Life Cycle Assessment Approach
No full textTourism is the second largest contributor to Indonesia\u27s foreign exchange. In addition, tourism can be a leverage factor for other developments, especially in the socio-economic field. nHowever, this development can have an impact on environmental quality such as climate chage. Jakarta as an urban area has many tourism potentials, one of which is Taman Margasatwa Ragunan (TMR). The development of urban tourism has become a new trend in the community because the distance traveled is relatively closer and the cost is relatively cheaper. In its development, urban tourism needs to be controlled and well designed in order to be sustainable. This study aims to identify the impacts that may arise and calculate the carbon emissions generated from elephant management. Elephants are taken as the object of study because among the existing animals, elephants are the animals with the most food consumption and produce the most carbon emissions. The method used to calculate environmental impacts is life cycle assessment (LCA). The scope taken in this study is gate to gate, so that the impacts taken into account are those that occur in the process of raising elephants. The research began with observation of Ragunan Wildlife Park to identify input-process-output components in elephant management. The results showed that the carbon footprint value of elephant mammal management in TMR was 4.62 kg CO2eq/elephant. The hotspot GHG emission-contributing sector is elephant feed in the form of elephant gras
The Role of Urban Forest in Providing Landscape Services: A Case Study from Bekasi City, West Java, Indonesia
Full text linkUrban forests are critical green infrastructures that provide multiple landscape services, including carbon sequestration, microclimate regulation, and biodiversity support, thereby contibuting to global climate adaption and urban sustainability. This study aimed to analyze the Patriot Bina Bangsa (PBB) Urban Forest’s role in providing comfort through carbon storage and sequestration using the i-Tree Eco model, microclimate monitoring, and evaluating its contribution to landscape services. Data were collected from 12 sample plots using a stand inventory that refers to the i-Tree Eco data collection protocol. An estimated 750 trees, dominated by Nauclea orientalis and Swietenia macrophylla, with a moderate species diversity index (H\u27 = 1.7). The urban forest stored 241 tons of carbon and sequestered 17.85 tons annually, valued at approximately 151 million rupiah. Temperature Humidity Index (THI) values indicate moderate thermal comfort, especially during peak hours. A multifunctional landscape service assessment shows high for regulation functions and landscape disservices, and medium for habitat, information, and production. These findings highlight the importance of urban forests and tree diversity in maintaining landscape services. The indicators outlined in this study provide a basic method for assessing the services provided by urban forest landscapes. It can be used as a tool to improve the management of urban forest systems and monitor the impact of urban greening policies on human well-being in urban landscape
Movement Patterns and Habitat Suitability of Translocated Sumatran Tigers (Panthera tigris sumatrae)
Full text linkSumatran tigers (Panthera tigris sumatrae), critically endangered mammals native to Indonesia, play a vital role in maintaining ecosystem balance by regulating prey populations. However, habitat loss and human-wildlife conflict necessitate translocation as a conservation strategy. Translocation becomes an option when the conflict site is no longer possible as a tiger habitat, and the landscape changes from homogeneous to heterogeneous, causing changes in biodiversity that impact resource changes. Ecological studies on the aspects of space use and suitability characteristics of habitats by translocated tigers need to be conducted to improve survival. This study analyzed the home range and habitat suitability of translocated Sumatran tigers in Kerinci Seblat National Park (KSNP) using GPS collar data collected between June and September 2022. This research was conducted by developing a species distribution model using the Minimum Convex Polygon (MCP), fixed kernel (FK), and maximum entropy (Maxent) programs. The most active time used in moving by Sumatran tigers was in the morning of 06.00–08.59, MCP 492 km2, and FK 98.9 km2. The results of Maxent modelling obtained an average AUC value of 0.88, and the performance of this model was very good. The response shows how the prediction of the Sumatran Tiger\u27s presence changes with each varying landscape value. The total edge contribution is dominant, with a proportion in this model of 35.5% and a Class area proportion of 27.5%
Sustainability Analysis of Environmental Waste Alleviation through Bioconversion using Black Soldier Fly Larvae: A Case Study in Depok City, Indonesia
Full text linkDepok City, Indonesia, faces significant challenges with a population of over 2 million people, substantially impacting waste issues, particularly food waste, contributing to global anthropogenic greenhouse gas emissions. To support sustainable development goals, it is crucial to reduce food loss. To address this problem, black soldier fly (Hermetia illucens) has emerged as a potential solution because of its ability to break down food waste into biomass. Nevertheless, environmental waste management faces challenges such as public awareness, infrastructure limitations, stakeholder engagement, and threats to long-term sustainability. This study aims to identify key leverage points for the sustainability of BSF (Black Soldier Fly) larvae utilization in waste management. The objective of this study was to identify the key sustainability factors. This study used RAPFISH (Rapid Appraisal for Fisheries) software to find the keys to sustainability. Results reveal that the sustainability status of the utilization of BSF for environmental waste managementis deemed to be “Relatively Sustainable”. The Department of Environmental and Cleanliness plays a pivotal role as a sustainability leverage for this program. 
Preserving Rice Fields and Domestic Rice Adequacy: A Case Study in Banyumas Regency, Central Java, Indonesia
Full text linkPenurunan lahan sawah akibat perubahan penggunaan lahan di berbagai wilayah di Indonesia mempengaruhi pasokan pangan nasional. Secara jangka panjang, fenomena ini akan mengancam upaya pemenuhan kecukupan beras dan meningkatkan potensi krisis pangan. Studi ini menganalisis penurunan kecukupan beras domestik akibat konversi lahan sawah di Kabupaten Banyumas. Penelitian ini dilakukan menggunakan pemodelan spasial dan metode Micmac. Hasilnya menunjukkan tingkat konversi sawah di Kabupaten Banyumas dari tahun 2007 hingga 2019 adalah 103 ha per tahun. Pada tahun 2045, diperkirakan luas lahan sawah menjadi 29.160 ha dengan tingkat konversi dari tahun 2019 hingga 2045, 1.384 ha. Faktor pendorong adalah jarak dari ibu kota kecamatan, jarak dari jalan, jarak dari pemukiman, jarak dari saluran irigasi, dan kepadatan penduduk. Variabel kunci dalam kemandirian beras adalah regulasi perlindungan sawah, insentif untuk melindungi sawah, informasi spasial lahan sawah secara detil, ketersediaan air irigasi, peran aktif kelompok petani, dan produktivitas padi.The destruction of rice fields due to changes in their use in various regions of Indonesia affects the national food supply. In the long term, this phenomenon will threaten efforts to fulfill the adequacy of rice and increase the potential for a food crisis. This study analyzes the decline in domestic rice sufficiency due to destroying rice fields in the Banyumas Regency. This study was conducted using spatial modeling and the Micmac method. Respondents and experts were purposively determined based on the roles of 50 respondents and seven experts. The findings revealed that, on average, 103 hectares of rice fields in the Banyumas Regency were lost annually between 2007 and 2019. In 2045, it is estimated that the area of rice fields in Banyumas Regency will be 29,160 hectares, with a conversion rate from 2019 to 2045 of 1,384 hectares. Several driving factors are distance from the district capital, distance from roads, distance from settlements, distance from the irrigation channel, and population density. The essential factors influencing rice self-sufficiency include enforcing rice field preservation regulations, incentivizing measures for protecting rice fields, comprehensive spatial data on rice fields, sufficient access to irrigation water, proactive engagement of farmer collectives, and level of rice productivity
Analyzing Social Capital Factor for Agrotourism Development: A Case Study of Tambakbaya Village, Banten Province
Full text linkResearch on social capital in tourism development has been widely conducted using various approaches. This study examines the social capital of the Tambakbaya Village community to support the development of Sukabungah Agrotourism. Using a survey method, data was collected over three months (December 2023–February 2024) from community members directly and indirectly involved in agrotourism activities. Confirmatory Factor Analysis (CFA) was conducted using IBM SPSS Version 26. The findings reveal that proactive action is the most significant factor influencing social capital in the community. To strengthen social capital, Sukabungah Agrotourism management should enhance community engagement, build trust among stakeholders, expand social networks, and improve compliance through formal socialization and social media, with support from the local government