Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management)
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Detecting Thermal Anomalies In Lahendong Geothermal Prospect Using Aster TIR and Landsat 8
Get PDFPenelitian ini bermaksud untuk menentukan daerah anomali panas bumi menggunakan data penginderaan jauh dalam bentuk data citra satelit Landsat 8 dan ASTER yang memiliki Thermal Infrared Sensor (TIRS). Melalui pra-pemrosesan seperti georeferensi, kalibrasi radiometrik, dan koreksi atmosfer, data Landsat8 TIRS dan ASTER digunakan untuk menghasilkan suhu permukaan tanah area penelitian selama siang hari dan malam hari menggunakan inversi fungsi planck dan algoritma pemisahan emisivitas. Hasilnya menunjukkan suhu permukaan tanah selama siang hari dan malam hari dari empat tutupan lahan alami - air, vegetasi, area terbangun, dan tanah kosong - diklasifikasi dan dianalisis. Menurut hasil, vegetasi dan tanah kosong menunjukkan anomali yang relatif panas pada siang hari dan anomali yang relatif dingin pada malam hari. sebaliknya, air menunjukkan anomali yang relatif dingin pada siang hari dan anomali yang relatif panas pada malam hari. Sementara itu area terbangun menunjukkan anomali yang relatif panas pada siang hari dan anomali dingin pada malam hari. Perhitungan nilai rata-rata yang dihitung dari suhu permukaan malam dan siang hari dapat secara memadai menghilangkan anomali yang relatif dingin / panas dari tutupan lahan yang disebabkan oleh radiasi matahari, sehingga secara efektif memperlihatkan anomali panas bumi. Dengan demikian, Sembilan daerah anomali panas bumi berhasil teridentifikasi.This study intends to determine geothermal anomalies area using remote sensing data in the form of Landsat 8 and ASTER satellite imagery data which have Thermal Infrared Sensor (TIRS). Through pre-processing like georeferencing, radiometric calibration, and atmospheric correction, the Landsat 8 TIRS and ASTER data were wont to invert the land surface temperature of the study area during the daytime and night time using the inversion of planck function and emissivity separation algorithm. Result shows the land surface temperatures during daytime and night time of four natural land cover —water, vegetation, built up area, and bare soil—were classified and analyzed. According to the results, vegetation and bare soil show relatively thermal anomalies during the day and comparatively cold anomalies during the night. Otherwise water shows relatively cold anomalies during the day and relatively thermal anomalies during the night. Meanwhile built up area shows relatively thermal anomalies during the day and cold anomalies during the night. Superimposed and calculating mean of the night and day surface temperature can adequately eliminate the relatively cold/thermal anomalies of land cover caused by solar radiation, thus effectively highlighting geothermal anomalies. Thus, Nine geothermal anomalies areas were successfully extracted
THE UTILIZATION OF DURIAN PEELS (Durio zibethinus) FOR THE MANUFACTURING OF CHARCOAL BRIQUETTES AS ALTERNATIVE FUEL
Get PDFKulit durian adalah limbah biomassa yang dapat dimanfaatkan sebagai bahan bakar alternatif menjadi briket arang. Kulit durian mengandung bahan yang mudah terbakar yaitu selulosa yang tinggi (50%-60%) dan lignin (5%) serta pati yang rendah (5%). Penelitian ini bertujuan untuk mengetahui karakteristik briket arang dari limbah kulit durian menggunakan perekat dari pati sagu sebagai bahan bakar alternatif. Perekat yang digunakan adalah perekat dari tepung sagu yaitu 3% dari berat arang yang digunakan. Dalam penelitian ini digunakan arang sebanyak 500 g, sehingga bahan perekat yang digunakan adalah 15 g. Hasil pengujian mutu produk briket berbahan baku kulit durian diperoleh nilai kalor (5189.128 kal/g), nilai kadar air (3,6044%), nilai kadar abu (3,5643%), nilai kadar zat menguap ( 21,1273%), dan nilai kadar karbon terikat (69,2279%), kerapatan (0,4778 g/cm3), laju pembakaran (0,22 g/sekon). Briket yang dihasilkan dari limbah kulit durian dengan menggunakan pati dari sagu sebagai perekat dapat dijadikan sebagai bahan bakar alternatif yang ramah lingkunganDurian peels is a biomass waste that can be used as an alternative fuel in charcoal briquettes. Durian peels contains combustible materials, namely high cellulose (50%-60%) and lignin (5%) and low starch (5%). This study aims to determine the characteristics of charcoal briquettes from durian skin waste using adhesive from sago starch as an alternative fuel. The adhesive used is adhesive from sago flour, which is 3% of the weight of the charcoal used. In this study, 500 g of charcoal was used, so that the adhesive used was 15 g. The results of testing the quality of briquettes products made from durian peels obtained calorific value (5189.128 Cal/g), moisture content value (3.6044%), ash content value (3.5643%), volatile matter value (21.1273%), and the value of bounds carbon content (69.2279%), density (0.4778 g/cm3), combustion rate (0.22 g/second). Briquettes produced from durian skin waste using starch from sago as an adhesive can be used as an alternative fuel that is environmentally friendl
Species composition and stand structure of Shorea stenoptera Burck in The Forest Area with Special Purposes (KHDTK) Haurbentes, Indonesia
Get PDFLuasan hutan di Indonesia yang semakin berkurang akibat deforestasi memerlukan pengelolaan hutan lestari. Shorea stenoptera Burck merupakan salah satu jenis endemik tanaman kehutanan di Borneo. IUCN menyatakan bahwa jenis tersebut termasuk ke dalam status hampir terancam (Near Threatened). Tujuan penelitian ini adalah menganalisis komposisi jenis, struktur tegakan, dan regenerasi alami tegakan S. stenoptera, serta mengidentifikasi pengaruh aspek biofisik terhadap keragaan regenerasi alami S. stenoptera di KHDTK Haurbentes, Kabupaten Bogor, Jawa Barat. Metode yang digunakan adalah analisis vegetasi dengan membangun petak pengamatan sebanyak 5 petak. Hasil penelitian menunjukkan bahwa jenis S. stenoptera mendominasi pada setiap tingkat pertumbuhan pada petak pengamatan S. stenoptera. Struktur tegakan menunjukkan kurva J terbalik. Hal tersebut mengindikasikan tegakan S. stenoptera mengalami perubahan formasi ke hutan alam. Regenerasi S. stenoptera menunjukkan regenerasi normal dengan kerapatan individu semakin berkurang seiring bertambahnya kelas diameter. Aspek biofisik seperti kelerengan dan elevasi sangat memengaruhi pertumbuhan S. stenoptera.The importance of preventing S. Stenoptera in restoring sustainable forest management to maintain the existence of forests in the future, the reduction due to deforestation causes a decrease in land conventions. Shorea stenoptera Burck is a forest species native to Borneo, Sumatra, Thailand, and Malaysia. IUCN declared this species in the category of Near Threatened. This study aims to analyze the species composition, stand structure, and natural regeneration of Shorea stenoptera Burck and identify the biophysics effect on the regeneration performance of S. stenoptera in KHDTK Haurbentes. This research method uses vegetation analysis by constructing five observation areas. The results showed that S. stenoptera dominated at each growth stage. The stand structure shows an inverted J-curve. This indicates that the stands of S. stenoptera have turned into natural forest. The decrease in density followed the increase in diameter class, so S. stenoptera regeneration showed normal regeneration. Biophysical aspects such as slope and elevation affect the growth of S. Stenoptera by observing the characteristics of the analysis adjusted statistically
Correlation of some water quality parameters and Pb in sediment to gastropod diversity in Ambon Island Waters
Get PDFThe coastal waters of Ambon Island have quite diverse ecosystems that allow for the presence of various organisms, one of which is gastropods. This study aims to analyze the correlation of some water parameters and Pb in sediment to the diversity of gastropods. The research method was carried out by observing the density, water quality parameters, and Pb metal in sediments. Water parameters were measured in situ and analyzed in the laboratory. The distribution of gastropods was analyzed through Principal Component Analysis (PCA). At the same time, the correlation analysis was carried out using the Pearson correlation approach using SPSS v.16. The results showed that the types of gastropods with the highest density in the waters of Ambon Island were Terebralia sulcata, Hebra corticata, and Nerita patula. While the species with the lowest density value were Nassarius olivaceus, Polinices didyma, Lunella cinerea, Conus eburneus, Cypraea isabella, Vexillum plicarium, and Columbella scripta. The Shannon-Wienner Diversity Index ranges from 1.253–2.622, and the diversity index ranges from 0.083-0.207. It was included in the low category caused by the disturbance of water pollution and Pb metal in sediments. Meanwhile, the dominance index ranged from 0.098 to 0.511 indicating species dominance at several observation stations. The waters\u27 physical-chemical parameters strongly correlating with gastropod diversity are DO and Pb, with respective correlation values of r = 0.656 and r = -0.785.  
Analysis of Potential, Attraction, and Tourist Perception of Limpakuwus Pine Forest Natural Tourism, Banyumas City
Get PDFPembangunan sektor pariwisata dapat memberikan dampak terhadap sektor perekonomian dan lingkungan. Pengembangan pariwisata diharapkan dapat berjalan seimbang dan tidak menimbulkan dampak negatif bagi lingkungan. Berbagai atribut wisata seperti aksesibilitas, fasilitas, dan pelayanan dapat membentuk persepsi yang dapat dijadikan sebagai dasar dalam mengevaluasi pengelolaan dan pengembangan wisata. Wisata Alam Hutan Pinus Limpakuwus memiliki potensi besar untuk dikembangkan karena luasnya yang mencapai 25 hektar, berada di dataran tinggi, memiliki iklim yang sejuk, serta panorama alam yang indah. Penelitian ini bertujuan untuk mengidentifikasi potensi dan daya tarik objek wisata serta persepsi wisatawan terhadap kondisi Wisata Alam HPL, Pendekatan penelitian yang digunakan adalah pendekatan kualitatif dan kuantitatif (mix-method). Pengambilan data dilakukan dengan observasi dan wawancara kepada pengelola wisata dan wisatawan. Metode yang digunakan adalah analisis deskriptif kualitatif dan kuantitatif dengan skala likert. Hasil penelitian menunjukkan bahwa Wisata Alam HPL memiliki potensi dan daya tarik yang besar dari aspek flora dan fauna, sarana dan prasarana, daya tarik wisata, aksesibilitas, dan SDM. Persepsi wisatawan terhadap kondisi Wisata Alam HPL tergolong cukup baik, dengan catatan perlu adanya perbaikan di beberapa indikator penilaian. Wisata alam mempunyai potensi yang besar untuk mewujudkan pariwisata yang berkelanjutan, namun perlu partisipasi yang lebih terhadap pengelolaan lingkungan dari seluruh pelaku wisata.Abstract: Development of the tourism sector can have an impact on the economic and environmental sectors. Tourism development is expected to balance in all sectors and not have a negative impact on the environment. Various tourism attributes such as accessibility, facilities and services can form tourist perceptions that can be used as a basis for evaluating tourism management and development. Limpakuwus Pine Forest Natural Tourism has great potential because it covers an area of 25 hectares, located in the highlands, has a cool climate, and beautiful natural scenery. The purpose of this research are identify the potential and tourism object attraction and also identify tourist perception about tourim’s condition. The research methodology uses mix method by observation and interview with the tour manager and tourist. The method which uses are qualitative and quantitative descriptive with likert scale. Result of this research appoint that Limpakuwus Pine Forest Natural Tourism have a good potential and attraction to be developed in terms of flora and fauna, facilities and infrastructure, tourist attraction, accessibility, and human resources. Tourist perception about tourism’s condition be regarder quite good, with a few records of improvements in multiple assessments. Natural tourism have a big potential to actualize the sustainable tourism, however still need further participation against managing the enviromental from all tourism subject
Modeling The Habitat Suitability of Dare Monkey (Macaca maura Hr Schinz 1825) in Bantimurung Bulusaraung National Park, South Sulawesi
No full textPulau Sulawesi merupakan pusat wilayah Wallacea yang memiliki keanekaragaman hayati tinggi dan dihuni oleh beberapa spesies tumbuhan dan hewan endemik baik flora maupun fauna, salah satunya satwa primata monyet dare (Macaca maura HR Schinz 1825). Penelitian ini bertujuan untuk menganalisis kesesuaian habitat dan pengaruh variabel lingkungan terhadap habitat monyet dare di kawasan Taman Nasional Bantimurung Bulusaraung. Penelitian ini dilakukan dengan membangun model pendekatan distribusi spesies menggunakan Maxent ver. 3.4.4. yang dapat membantu melakukan analisis model kesesuaian habitat dalam skala luas dengan cara mengolah data kehadiran spesies dan variabel lingkungan yang diduga memengaruhi kehadiran spesies.
Hasil pengolahan data dalam membangun model kesesuaian habitat untuk monyet dare, didapatkan data kehadiran spesies sebanyak 191 titik. Sedangkan variabel lingkungan yang digunakan berupa tutupan lahan, ketinggian, kelerengan, suhu, jarak dari sungai, jarak dari jalan, dan jarak dari areal pertanian.
Hasil analisis jackknife pada variabel yang berpengaruh terhadap hasil model menunjukkan bahwa variabel yang berkontribusi tinggi adalah variabel tutupan lahan (Bio_5) kemudian diikuti, jarak dari jalan (Bio_1), jarak dari areal pertanian (Bio_4) dan jarak dari sungai (Bio_2). Besaran persentase kontribusi variabel lingkungan terhadap keberadaan monyet dare yakni tutupan lahan (35,1%), jarak dari jalan (32,2%), jarak dari areal pertanian (13,1%), jarak dari sungai (12,1%), kelerengan (3,6%), ketinggian (2,6%) dan suhu (1,3%).
Nilai AUC model kesesuaian habitat monyet dare sebesar 0,893 dengan standar deviasi ±0,015, merupakan model prediksi yang layak (reasonable predictions) dengan luas areal habitat yang sesuai 138,43 km2 (20%) dan yang tidak sesuai 538,44 km2 (80%). Luas areal habitat yang sesuai terbagi atas 3 yakni kelas kesesuaian rendah 90,11 km2 (65%), kelas kesesuaian sedang 25,58 km2 (18%) dan kelas kesesuaian tinggi 22,74 km2 (16%). Rendahnya luas areal habitat yang sesuai dibanding habitat yang tidak sesuai, serta besarnya luas areal kesesuaian rendah dibanding sedang dan tinggi, dapat menggambarkan bahwa ancaman dari keberadaan monyet dare masih tergolong tinggi.Sulawesi Island is the center of the Wallacea area which has high biodiversity and is inhabited by several endemic species of plants and animals, one of which is the dare monkey (Macaca maura HR Schinz 1825). This study aims to analyze habitat suitability and the effect of environmental variables on the habitat suitability of dare monkeys in the Bantimurung Bulusaraung National Park area. This research was conducted through the development of a species distribution approach model using Maxent ver 3.4.4. The results showed that the AUC value of the dare monkey habitat suitability model was 0.893 with a standard deviation of ±0.015 which is a feasible predictive model with suitable habitat area is 138.43 km2 (20%) and not suitable 538.44 km2 (80%). The suitable habitat area is divided into 3 classes, namely the low suitability class 90.11 km2 (65%), the medium suitability class 25.58 km2 (18%) and the high suitability class 22.74 km2 (16%). while the environmental variables that play a role and affect the presence of dare monkeys are land cover (35.1%), distance from the road (32.2%), distance from agricultural areas (13.1%), distance from rivers (12.1%), slope (3.6%), altitude (2.6%) and temperature (
Effect of Chitosan-PMAA-Nutrients Slow-release Fertilizer on Germination of Falcataria moluccana (Miq.) Barneby & J. W. Grimes
Get PDFSlow-release fertilizer (SRF) with chitosan (CS) coating as a supply of plant nutrients is an alternative to the efficient use of conventional chemical fertilizers and reduces environmental pollution. However, its potential in woody plants is limited. This study aimed to analyze the effect of SRF on Falcataria moluccana germination and SRF phosphorus release rate. This study used SRF from polymerizing CS with methacrylic acid (MAA) to trap nutrients (CS-PMAA-nutrients SRF). The seeds of F. moluccana were germinated at six concentrations SRF: without fertilizer (F0), SRF CS dose 0.5% weight 0.03 g (F1), SRF CS 0.5% 0.01 g (F2), SRF CS 0.7% 0.03 g (F3), SRF CS 0.7% 0.01 g (F4), and conventional fertilizer (F5) for 21 days. SRF can increase the germination of F. moluccana. F4 increased normal sprout (10%) and germination power (16%) of F. moluccana. Furthermore, SRF with a concentration of 0.01 g produced a higher germination value than a concentration of 0.03 g. The release rate of SRF’s nutrients was slower (91.80% phosphorus) than conventional fertilizers. SRF application can reduce nutrients lost and increase the efficiency of nutrient absorption. Hence, it can improve F. moluccana growth
Utilization of cassava peel waste as an organic fertilizer to build a sustainable cassava production center
Get PDFThe cassava production center in Bogor City is produced by Ciluar Village. Based on the potential of Ciluar Village, which has a lot of cassava agricultural land, cassava peel waste has the potential to be used as organic fertilizer. The aims of this paper are (1) to find out the minimum time to produce compost with the basic ingredients of cassava peels and goat manure with pH parameters according to Indonesian National Standard (SNI) standard; (2) to find out the best composition between cassava skin and goat manure to produce compost. There were three types of treatment based on weight composition comparison between cassava skin and goat manure. The results of the compost quality test were analyzed (statistical test) using analysis of variance (ANOVA) and LSD test (Lessest Significant Difference) to determine the effect of treatment on the observed variables with the help of IBM SPSS 26 software. The conclusions of this study include: (1) the minimum time to produce compost made from cassava peels and goat manure with pH parameters according to SNI is 42 days; (2) the best composition between cassava skin and goat manure to produce compost is a ratio of 7:3
Waqf-based private forest management model: case study in Bogor Regency, Indonesia
Get PDFAs in Bogor Waqf Forest, a waqf-based private forest management pattern was developed in Indonesia. Waqf currently functions not only for constructing mosques, cemeteries, and orphanages, but also for environmental preservation, known as green waqf. This study analyzed the mechanism of waqf forest development and waqf forest management practices in Bogor Regency. The method used Exploratory research was conducted using primary and secondary data. The informants were selected using purposive sampling. The data were analyzed qualitatively. The results showed that Bogor Waqf Forest Foundation collected donations in the form of zakat, infaq, and waqf (ziswaf) for the development of the Bogor Waqf Forest. In addition, the Bogor Waqf Forest Foundation collaborates with BAZNAS and the Ministry of Religious Affairs to manage Bogor Waqf Forest productively by empowering local communities by forming groups such as the Berkah Bersama Group, Giat Bersama Group, Citra Berdikari Group, KUB Asri Berseri, and Kelompok Tanggap Bencana (KATANA). Bogor Waqf Forest Management applies agroforestry forest management practices, such as agrosilvofishery, agrosilvopasture, apiculture, and agrisilviculture, which are non-timber product-oriented, namely NTFPs and environmental services
Analysis of the utilization of groundcherry (Physalis angulata L.) by the community around the Cibodas Resort Gunung Gede Pangrango National Park
Get PDFCecendet (Physalis angulata) merupakan tumbuhan obat yang berasal dari hutan Resort Cibodas Taman Nasional Gunung Gede Pangrango. Penelitian ini bertujuan untuk mengidentifikasi bagaimana potensi aktual tumbuhan cecendet dan menganalisis intentsitas, motivasi serta persepsi terhadap dampak pemanfaatan oleh masyarakat sekitar Resort Cibodas TNGGP. Penelitian dilaksanakan pada bulan September sampai November 2021, berlokasi di Resort Cibodas TNGGP dan Desa Cimacan. Jumlah cecendet yang ditemukan pada ketinggian 1000 - 1600 mdpl adalah 148 jenis. Hasil penilaian dari Hawaii Pacific Weed Risk Assessment (HPWRA) tumbuhan cecendet adalah 20 yang berarti beresiko tinggi menjadi invasif di dalam kawasan. Karakteristik masyarakat Desa Cimacan dominan sudah menikah dengan tingkat pendidikan terakhir SMA yang berprofesi sebagai pedagang. Intensitas masyarakat dalam pemanfaatan cecendet paling tinggi adalah sebagai bahan konsumsi makanan ataupun minuman. Motivasi masyarakat dalam memanfaatkan tumbuhan cecendet sama rata untuk religi, pendidikan, ekologi, budaya, rekreasi dan sosial. Persepsi terhadap dampak pemanfaatan tumbuhan cecendet adalah ragu-ragu untuk dampak ekonomi, sosial dan budaya. Persepsi terhadap dampak ekologi dinilai tidak setuju oleh masyarakat sekitar. Pemanfaatan oleh masyarakat dengan pendekatan budidaya dapat menjadi solusi tingginya resiko invasif dari tumbuhan cecendet.Groundcherry (Physalis angulata) is a medicinal plant originating from the Cibodas Resort forest, Gunung Gede Pangrango National Park. This study aimed to identify the actual potential of cecal plants and analyzeperceptions, motivations, and perceptions of the impact of their utilization by the community around Cibodas Resort MGPNP. Research was carried out from September to November 2021, in Cibodas Resort MGPNP and Cimacan Village. The total number of groundcherrys found at an altitude of 1,000–1,600 masl is 148. Results of the Hawaii Pacific Weed Risk Assessment (HPWRA) for groundcherry are 20, which means they are high risk of becoming invasive in the area. The dominant characteristic of the Cimacan Village community is married to the last high school education level who works as an entrepreneur. The highest intensity utilization of thegroundcherry is as an ingredient for food or drink consumption. Motivation of the community using groundcherry plants is same for religion, education, ecology, culture, recreation and society. Perceptions of impact of using groundcherry plants are uncertain to economic, social and cultural impacts. Perceptions of the ecological impact are considered disagreed by the surrounding community. Utilization by a community using a cultivation approach can be a solution to the high risk of invasiveness of groundcherry plants