Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)
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Study of Urban Temperature Profiles on Various Land Covers in The Greater Jakarta Region, Indonesia
Full text linkJabodetabek telah berkembang dari daerah kota kecil dan terpisah menjadi kota metropolitan yang lebih besar dan terpadu. Saat ini, Jabodetabek telah menjadi kota terbesar di Indonesia dan memainkan peran penting dalam aspek sosial, ekonomi dan politik. Namun, kurangnya kemampuan perencanaan dalam hal pengelolaan kawasan yang semakin kompleks perlu ditanggapi secara serius. Penelitian ini bertujuan untuk mengetahui profil suhu perkotaan, klasifikasi tutupan lahan di Jabodetabek, dan analisis albedo permukaan. Pertama, profil suhu dianalisis menggunakan data perubahan suhu diurnal dan suhu harian selama sembilan tahun. Kedua, klasifikasi tutupan lahan dianalisis menggunakan dataset citra Landsat 7 ETM+ dan Landsat 8 OLI/TIRS. Ketiga, analisis albedo permukaan dilakukan dengan menggunakan paduan data spasial dan karakteristik tutupan lahan yang diperoleh sebelumnya.
Hasil profil suhu menunjukkan bahwa daerah perkotaan memiliki periode pendinginan yang lebih lambat dibandingkan dengan daerah pinggiran kota. Proses klasifikasi menghasilkan tujuh kelas tutupan lahan dengan tingkat akurasi sebesar 80,95% (2010) dan 83,33% (2018), koefisien kappa masing-masing sebesar 0,74 (2010) dan 0,77 (2018). Oleh karena itu, dapat disimpulkan bahwa terjadi perluasan wilayah perkotaan sejak tahun 2010. Distribusi nilai albedo permukaan berturut-turut dari tinggi ke rendah yaitu lahan terbangun, rumput/semak, vegetasi, badan air, dan tanah lembap/tambak. Disamping itu, albedo permukaan dan suhu udara memiliki korelasi positif terhadap perubahan tutupan lahan. Hal ini ditunjukkan dengan tingginya R-square antara albedo dan tutupan lahan (0,84 dan 0,90) dan antara suhu udara dan tutupan lahan (0,59 dan 0,63). Dengan kata lain, perubahan tutupan lahan dapat meningkatkan nilai albedo dan suhu udara.
The greater Jakarta is an intimate urban area that evolved into the largest integrated metropolis in Indonesia. It plays a significant role in social, economic, and political aspects. To be considered seriously, however, is the lack of planning capacity in increasingly complex area management. This study seeks to determine urban temperature profiles, classify land cover, and analyze surface albedo in Jakarta greater area. Firstly, the temperature profile is analyzed using nine years of diurnal temperature data. Secondly, land cover classification was analyzed using Landsat 7 ETM+ and Landsat 8 OLI/TIRS image datasets. Thirdly, surface albedo analysis was conducted using previously derived spatial data and land cover characteristics. Results of the temperature profile indicate that urban areas have a longer cooling period than suburban areas. The classification procedure yields seven classes of land cover with an accuracy rate of 80.95% (2010) and 83.33% (2018); the kappa coefficient is 0.74 (2010) and 0.77 (2018), respectively. Since 2010, urban areas have expanded, as can be deduced from the evidence. The distribution of surface albedo values from high to low includes built-up land, grass/shrubs, vegetation, water bodies, and moist soil. Additionally, surface albedo and air temperature positively correlate with land cover variations. This is demonstrated by the high R-square values between albedo and land cover (0.84 and 0.90) and air temperature and land cover (0.59 and 0.60). In other words, land cover changes can increase albedo and air temperature
Application of Random Forest Algorithm to Analyze the Confidence Level of Forest Fire Hotspots in Riau Peatland
Full text linkForest fires pose a significant challenge in Riau Province, Indonesia, especially in peatland areas. This study employs the Random Forest (RF) algorithm to analyze the confidence levels of hotspots, aiming to predict potential fire occurrences and improve fire management strategies. The research focuses on peatlands spanning 3.86 million ha, using key variables such as NDVI, surface temperature, and peat thickness derived from satellite data. The model achieved an average AUC of 0.732 and a classification accuracy of 70.3%, with medium-confidence hotspots demonstrating the best predictive performance (AUC: 0.707, F1-score: 0.804). However, the model struggled with low-confidence hotspots, reflecting challenges in distinguishing less prominent patterns in the data. Compared to other methods, RF demonstrates strong potential in handling complex environmental datasets, making it a valuable tool for hotspot prediction. This study contributes to understanding forest fire risks in peatlands and provides actionable insights for improving preparedness and mitigation efforts
Land-cover Dynamics and Oriental Honey-buzzard Winter Habitat Preference in Borneo, Indonesia
Full text linkMigrasi merupakan bagian dari adaptasi perilaku individu terhadap perubahan lingkungan musiman. Migrasi dapat memberikan keuntungan bagi organisme yang dihadapkan pada perubahan sumber daya yang terbatas secara berkala. Pulau Borneo adalah salah satu tujuan migrasi musim dingin bagi Oriental Honey-buzzard di Indonesia. Dampak antara deforestasi, industrialisasi, dan urbanisasi telah menempatkan Kalimantan pada kondisi kritis. Pulau Borneo telah mengalami fragmentasi habitat yang disebabkan oleh faktor-faktor ini. ARGOS adalah alat pelacakan satelit yang telah digunakan untuk memantau pergerakan dan perilaku Oriental Honey-buzzard sejak tahun 2003. Tiga individu telah diselidiki dalam studi ini untuk menentukan respons terhadap perubahan tutupan lahan yang terjadi di Borneo pada tahun 2003, 2006, dan 2009. Kompleksitas ekologi dan hubungan antara spesies dan lingkungan yang mendukung respons Oriental Honey-buzzard dipaparkan dalam studi ini. Analisis respons menunjukkan bahwa Oriental Honey-buzzard lebih sering ditemui di area berhutan di Borneo daripada di 11 area tutupan lahan lainnya selama tiga tahun 2003, 2006, dan 2009. Durasi waktu yang dihabiskan di area berhutan secara konsisten menunjukkan durasi kehadiran terpanjang, dengan durasi masing-masing sebesar 136,88 jam, 1121,17 jam, dan 1160,53 jam pada tahun 2003, 2006, dan 2009, secara berturut-turut. Durasi kehadiran terpendek terjadi di area mangrove dan rawa pada tahun 2003, 2006, dan 2009.Migration is part of an individual\u27s behavioral adaptation to seasonal environmental changes. Migration can take advantage of organisms facing cyclical changes in limited resources. Borneo island is one of the wintering migration destinations for Oriental Honey-buzzard in Indonesia. The confluence of deforestation, industrialization, and urbanization has placed Kalimantan at a critical juncture. Borneo Island has led to the fragmentation habitat. ARGOS is a satellite tracking tool that has been used to monitor the movements and behavior of Oriental Honey-buzzards since 2003. Three individuals were investigated in this study to determine the response to land-cover changes that occurred in Borneo in 2003, 2006, and 2009. The ecological complexity and speciesenvironment connections that support Oriental Honey-buzzard responses are highlighted in this study. The analysis of responses suggests that Oriental Honey-buzzard was more commonly encountered in forested areas in Borneo than in 11 other land-cover areas during three years 2003, 2006, and 2009. Time duration spent in forested areas consistently exhibited the longest presence duration, with durations of 136.88 hours, 1,121.17 hours, and 1,160.53 hours in 2003, 2006, and 2009, respectively. The shortest duration of presence in mangrove and swamp areas was during 2003, 2006, and 2009
Scenario of Sustainable Food Plantation Forest Management in the Central Kalimantan EX-PLG Area
No full textHutan dan lahan berperan penting dalam pemenuhan kebutuhan pangan ternak. Sistem pangan memainkan peran penting karena melibatkan sistem sosial-ekologis yang kompleks. Namun, food estate, terutama di lahan gambut, saat ini menjadi subyek perdebatan multi-sektoral mengenai keberlanjutannya. Penelitian ini berfokus pada pencarian alternatif pengelolaan lahan yang dapat mengakomodasi kepentingan konservasi dan ekonomi sekaligus memberikan manfaat sosial secara adil dan berkelanjutan. Dengan menggunakan kawasan eks PLG sebagai wilayah kajian, analisis kandungan kebijakan ekstensifikasi lahan food estate dan implementasinya menunjukkan inkonsistensi 45% sehingga menimbulkan konflik horizontal antar masyarakat lokal. Dalam upaya menggali alternatif pengelolaan lahan yang dapat mengakomodasi kepentingan multi sektoral, ditemukan tujuh jenis tanaman yang dikembangkan oleh masyarakat lokal di wilayah eks PLG memiliki NPV>1 dan BCR>0, sedangkan pada analisis multidimensi Rap-Gambut, ketujuh jenis tanaman tersebut memiliki indeks keberlanjutan rata-rata yang cukup baik (50,01-75,00). Analisis leverage menginformasikan tiga variabel penting, yaitu intensitas kebakaran lahan, penyerapan tenaga kerja, dan intensitas konflik lahan. Berdasarkan empat skenario yang dikembangkan, skenario IV adalah yang paling layak secara finansial untuk dilaksanakan. Dengan demikian, mempertahankan fungsi kawasan dengan mengintegrasikan beragam komoditas lokal (skenario IV), serta mempertahankan fungsi kawasan dengan mengintegrasikan beragam komoditas lokal (skenario IV)
Reclamation Strategies for Sustainable Agriculture on Post-Mining Land: A Case Study in East Kalimantan, Indonesia
Full text linkMining activities often leave behind degraded land requiring restoration and sustainable utilization. This study aims to (1) analyze the suitability of post-mining land for agriculture, (2) assess the socioeconomic conditions of surrounding communities, and (3) evaluate sustainability factors influencing post-mining land use. A land evaluation was conducted using a matching system, while socioeconomic data were collected through purposive sampling interviews across four post-mining sites in East Kalimantan, Indonesia. The land suitability analysis identified three viable agricultural uses: rice cultivation (342.94 ha), corn production (209.51 ha), and pasture-raised cattle grazing (377.81 ha), with distribution across sites LP1, LP2, LP3, and LP4. The sustainability of each site was assessed across five dimensions: ecological, economic, social, legal, and infrastructure, using composite sustainability indices. Results showed varying sustainability levels: ecological (59.37, moderately sustainable), economic (80.35, highly sustainable), social (70.43, fairly sustainable), legal (57.42, moderately sustainable), and infrastructure (85.53, highly sustainable). These findings indicate that while economic and infrastructural conditions are favorable for sustainable land use, ecological and legal aspects require targeted improvements. The moderate social sustainability score suggests a need for greater community engagement and benefit-sharing mechanisms. These findings provide actionable insights for improving post-mining land use and promoting sustainable development in East Kalimantan, Indonesia
Land Tenure Conflicts in Forest Areas of Muara Gembong, Bekasi Regency
Full text linkKonflik tenurial lahan telah menjadi masalah yang signifikan di Jawa selama beberapa dekade. Dualitas dalam memandang hak atas tanah, pemerintah dari sisi hukum, dan masyarakat dari sisi historis penguasaan tanah menjadi narasi yang terus diperdebatkan dan belum terselesaikan hingga saat ini. Penelitian ini bertujuan untuk mendeskripsikan dinamika penguasaan tanah melalui bukti empiris lintasan sejarah penguasaan tanah di kawasan hutan di Kecamatan Muara Gembong, Kabupaten Bekasi. Penelitian ini menyajikan studi kasus tentang sejarah penguasaan lahan yang telah terjadi sejak lama di Kecamatan Muara Gembong, Kabupaten Bekasi. Dinamika kebijakan penguasaan lahan dalam praktik pengelolaan lahan oleh otoritas kehutanan telah menghidupkan kembali praktik teritorialisasi Negara melalui klaim kawasan hutan. Akhirnya, kebijakan penguasaan tanah oleh Negara hanya mendapatkan kepastian hukum tanpa legitimasi dari masyarakat lokal.Land tenure conflicts have been a significant problem in Java for decades. The divergence between the state’s legal view and the community’s historical claim to land rights has sparked longstanding debate. This study aims to describe the dynamics of land tenure through empirical evidence of the historical trajectory of land tenure in forest areas in Muara Gembong District, Bekasi Regency. The research was conducted using in-depth interviews, analysis of historical data and literature, and a review of relevant land and forest policy documents. As a result, land tenure policies by the State only gain legal certainty without the legitimacy of local communities. The findings reveal that the land tenure dynamics in Muara Gembong are shaped by a process of state territorialization through the authority of the forestry sector, which is countered by local communities and regional authority efforts at counter-territorialization. This tension has led to tenure insecurity for local communities, as they often lack formal proof of land ownership. The presence of a forest area governance regime that relies on a top-down, command-and-control approach has proven ineffective in achieving its goal of maximizing public welfare. Therefore, future policy directions should focus on inclusive negotiation processes and reforms that ensure tenure security recognized by all parties
Revisiting Rainwater Harvesting: A Systematic Review of Management Practices in Malaysia Using PRISMA
Full text linkThis study revisits the development and application of rainwater harvesting (RWH) systems in Malaysia and highlights their role in integrated and sustainable urban water resource management. A systematic literature review based on PRISMA guidelines analyzes research on RWH, storm-water management, and green technologies in Asia, especially Malaysia. The results show that RWH has evolved from a traditional practice to a modern multifunctional solution for water conservation, flood protection, and climate change adaptation. Considering the Malaysian conditions, the unique RWH system is an important tool for reducing flash floods, improving groundwater recharge, and reducing storm-water pollution. The study recommends using green infrastructure, such as rain gardens, as a complementary solution to improve water retention and quality. This highlights the need for local, cost-effective technical and regulatory frameworks to facilitate the widespread adoption of RWH. This study also encourages the integration of RWH into national policies to achieve sustainable water management in line with the Sustainable Development Goals. The novelty of this study lies in its systematic review approach, focusing on the evolution of water resource management strategies in Malaysia and the need for integrated planning and policy support to take full advantage of the potential of the RWH system to address water and environmental issues in Malaysia
Status of Natural Regeneration of Mangroves in Southern Nigeria
Full text linkHutan bakau Delta Niger di Nigeria telah mengalami peningkatan degradasi, karena bertahun-tahun eksplorasi minyak / polusi, urbanisasi dan ledakan populasi. Studi tentang kapasitas pemulihan alami mangrove dan kebutuhan remaja terbatas. Oleh karena itu, penelitian ini meneliti hubungan antara regenerasi alami mangrove dan parameter sedimen di bagian barat Delta Niger. Penelitian ini dilakukan di empat lokasi (Agge, Burutu, Opuama, Kurutie) dan kontrol di Ifie. Dua puluh kuadrat berukuran 20m x 20m diletakkan di setiap lokasi. Komposisi dan kepadatan spesies remaja diperoleh dari sub-kuadrat (10m x 10m). Sampel sedimen, berjumlah 100, diambil dari 0-30cMangroves of the Niger Delta in Nigeria have experienced increased degradation due to years of oil exploration/pollution, urbanization, and population explosion. However, studies on mangroves\u27 natural recovery capacity and juvenile requirements are limited. Therefore, this study examined the relationship between natural mangrove regeneration and sediment parameters in the western Niger Delta. The study was conducted in four locations (Agge, Burutu, Opuama, and Kurutie) and a control location in Ifie. Twenty quadrats of 20 × 20 m were laid at each location. Juvenile species composition and density were obtained from sub-quadrats (10 × 10 m). Sediment samples, totaling 100, were taken from 0 to 30 cm depth within each quadrat. The sediment parameter concentrations were determined using standard laboratory procedures. Mangrove juveniles were classified, based on height, into seedlings (< 40 cm), saplings (40–150 cm), and young trees (1.5–3m), with saplings forming a major proportion. Partial least squares regression was used to evaluate the effects of sediment parameters on mangrove juveniles. Calcium, magnesium, sand, organic carbon, electrical conductivity, total acidity, clay, effective cation exchange capacity, salinity, and bulk density were significant predictors of juvenile mangrove species abundance. A high potential for regeneration, particularly for Rhizophora spp. juveniles, has been established. The establishment of mangrove conservation and reforestation projects is therefore recommended. 
Ecotourism Development Potential Based on Environmental Comfort in Gunung Walat University Forest Area, Sukabumi, Indonesia
Full text linkGunung Walat University Forest (GWUF) in Sukabumi, West Java, serves as a centre for training, education, and research in forestry. This research analyses the environmental comfort of GWUF, focusing on thermal comfort, visual aesthetics, and visitor perceptions related to their suitability in conducting ecotourism development to increase GWUF income in realizing sustainable forest management. Data was collected from November 2023 to February 2024 at three locations in the GWUF by measuring air temperature and humidity. Interviews were conducted with respondents experienced in landscape assessment to evaluate the aesthetic level of 10 objects in GWUF, and interviews with visitors on aspects of GWUF management and presence. The Thermal Humidity Index (THI), Scenic Beauty Estimation (SBE), and Likert scale analysis were also used. The results showed that the GWUF area was in a comfortable thermal condition. The value varied and became a new attraction, one of which was the beauty of the GWUF cave. Overall, visitors rated the air quality and natural beauty positively; however, there are some points to note regarding the availability of facilities and the accessibility of the site, highlighting areas for improvement in management
Historical Analysis of Mangrove Ecosystems Changes in Tidal Disasters-Prone Areas Using Remote Sensing
Full text linkMangrove ecosystems are vital for human livelihoods, but ongoing exploitation and natural disturbances have led to significant land use and cover changes. Therefore, this study aimed to identify trends regarding land cover (LC) changes in mangrove ecosystems using remote sensing. LC changes from 1988 to 2024, as observed using remote sensing techniques. Satellite imagery from Landsat 5 TM, Landsat 7 ETM+, Landsat 8 OLI/TRIS, and Landsat 9 OLI/TRIS was analyzed using the Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Index (NDWI), and a newly developed Combined Mangrove Recognition Index (CMRI). The results revealed four distinct phases of LC change over the study period (1988–2024), starting from 1988 to 1989, during which 12.14 ha of mangrove forest were documented. The second phase, spanning from 1990 to 1994, witnessed the onset of anthropogenic disturbances in pond area expansion, totaling 41.04 ha. The third phase, which spanned from 1995 to 1998, featured abrasion, resulting in 11.56 ha reduction in the area covered. Natural ecosystem recovery began in 1998 and continued with human intervention in the fourth phase from 2008 to 2024, resulting in an increase in mangrove forest LC by 62.57 ha. The study demonstrates the utility of remote sensing in documenting ecological changes over time and provides critical insights for sustainable coastal management and policymaking in vulnerable urban coastal zones