Krangean (Litsea cubeba Lour) adalah salah satu jenis yang mendiami wilayah Gunung Slamet yang hampir semua bagian pohon krangean berpotensi sebagai penghasil minyak atsiri. Kondisi permudaan jenis ini di alam sulit di temukan sehingga diperlukan informasi mengenai preferensi ekologi yang tepat guna tujuan budidaya dan konservasi. Tujuan penelitian ini adalah mengidentifikasi komposisi dan struktur tegakan, pola sebaran, karakteristik habitat, dan regenerasi krangean (L. cubeba) di hutan lindung Gunung Slamet. Penelitian ini menggunakan metode analisis vegetasi dengan membuat plot berukuran 30 m × 30 m sebanyak 18 plot. Hasil penelitian menunjukkan pola persebaran krangean cenderung mengelompok (clump) dan kondisi regenerasi yang buruk karena hanya ditemukan pada tingkat tiang dan pohon. Kondisi habitat L. cubeba di Gunung Slamet berada pada ketinggian 1018-2032 mdpl dengan kelerengan curam hingga sangat curam (30 - 59,10%), suhu mulai 11℃ hingga 22,5℃, dan kelembaban 74 - 92%. Jenis tanah yang teramati adalah jenis tanah latosol dengan kategori pH agak masam. Faktor lingkungan yang diujikan tidak berpengaruh nyata pada luas bidang dasar (LBDS) krangean dengan R2 sebesar 55,37%.
{"title":"Distribution Pattern, Habitat Characteristics, and Regeneration of Krangean (Litsea cubeba) at Mount Slamet, Central Java","authors":"Istomo Istomo, Mufti Abdillah","doi":"10.36873/jht.v17i2.5240","DOIUrl":"https://doi.org/10.36873/jht.v17i2.5240","url":null,"abstract":"Krangean (Litsea cubeba Lour) adalah salah satu jenis yang mendiami wilayah Gunung Slamet yang hampir semua bagian pohon krangean berpotensi sebagai penghasil minyak atsiri. Kondisi permudaan jenis ini di alam sulit di temukan sehingga diperlukan informasi mengenai preferensi ekologi yang tepat guna tujuan budidaya dan konservasi. Tujuan penelitian ini adalah mengidentifikasi komposisi dan struktur tegakan, pola sebaran, karakteristik habitat, dan regenerasi krangean (L. cubeba) di hutan lindung Gunung Slamet. Penelitian ini menggunakan metode analisis vegetasi dengan membuat plot berukuran 30 m × 30 m sebanyak 18 plot. Hasil penelitian menunjukkan pola persebaran krangean cenderung mengelompok (clump) dan kondisi regenerasi yang buruk karena hanya ditemukan pada tingkat tiang dan pohon. Kondisi habitat L. cubeba di Gunung Slamet berada pada ketinggian 1018-2032 mdpl dengan kelerengan curam hingga sangat curam (30 - 59,10%), suhu mulai 11℃ hingga 22,5℃, dan kelembaban 74 - 92%. Jenis tanah yang teramati adalah jenis tanah latosol dengan kategori pH agak masam. Faktor lingkungan yang diujikan tidak berpengaruh nyata pada luas bidang dasar (LBDS) krangean dengan R2 sebesar 55,37%.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2022-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73572820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nanda Satya Nugraha, D. P. Putra, Mohammad Prasanto Bimantio, A. Ferhat, Rama Zakaria, M. Ramadhan, Egga Bella
Penanaman pohon pada sektor swasta dewasa ini menjadi salah satu nilai penting didalam keseriusan perusahaan dalam mengurangi emisi karbon, salah satunya berkaitan dengan Carbon offset yang merupakan serapan energi berkelanjutan untuk mengimbangi penggunaan bahan bakar fosil yang menghasilkan karbon, sehingga monitoring/ inventarisasi keberadaan pohon yang ditanam oleh perusahaan sangat penting untuk dilakukan. Inventarisasi pohon menjadi salah satu kegiatan periodik yang dilakukan guna untuk mengetahui perkembangan pertumbuhan dari pohon yang di tanaman oleh perusahaan. Umumnya inventarisasi yang dilakukan masih menggunakan tally sheet, akan tetapi memiliki efektifitas yang rendah dalam hal tabulasi data sehingga diperlukan satu terobosan untuk menunjang efektifitas inventarisasi tersebut. Jejak.in merupakan salah satu platfom digital yang mengembangkan pemantauan pohon dan jejak karbon berbasis digital (aplikasi android) sehingga perlu untuk dilakukan uji implementasi dalam perpektif efektifitas. Penelitian ini dilakukan di Taman Keanekaragaman hayati (KEHATI) PT. Tirta Investama Pabrik Klaten/ AQUA Klaten Kecamatan Polanharjo, Desa Wangen dan Ponggok dengan durasi waktu 1 bulan. Metode yang digunakan dalam penelitian adalah metode sensus yang artinya total keseluruhan pohon di Taman KEHATI AQUA Klaten diambil secara menyeluruh dan merata. Hasil dari penelitian ini menunjukan bahwa penggunakan aplikasi Jejak.in mampu memberikan efektifitas pengambilan data dan memberikan informasi secara lengkap pada luasan 4,86 Ha dengan total 1048 Pohon yang terdiri dari 59 spesies dengan kesehatan pohon kondisi baik sebanyak 958 pohon, kering sebanyak 26 pohon, terkena hama sebanyak 61 pohon, kondisi mati sebanyak 3 pohon, sedangkan pada taksiran stok karbon di Taman KEHATI AQUA Klaten pada 5 tahun mendatang (2026) sebesar 40,003 Gt . Kata kunci : Karbon, jejak.in, Pemantauan
{"title":"Tree Monitoring and Carbon Absorption Estimated based on Android at KEHATI AQUA Park Klaten","authors":"Nanda Satya Nugraha, D. P. Putra, Mohammad Prasanto Bimantio, A. Ferhat, Rama Zakaria, M. Ramadhan, Egga Bella","doi":"10.36873/jht.v17i2.5308","DOIUrl":"https://doi.org/10.36873/jht.v17i2.5308","url":null,"abstract":"Penanaman pohon pada sektor swasta dewasa ini menjadi salah satu nilai penting didalam keseriusan perusahaan dalam mengurangi emisi karbon, salah satunya berkaitan dengan Carbon offset yang merupakan serapan energi berkelanjutan untuk mengimbangi penggunaan bahan bakar fosil yang menghasilkan karbon, sehingga monitoring/ inventarisasi keberadaan pohon yang ditanam oleh perusahaan sangat penting untuk dilakukan. Inventarisasi pohon menjadi salah satu kegiatan periodik yang dilakukan guna untuk mengetahui perkembangan pertumbuhan dari pohon yang di tanaman oleh perusahaan. Umumnya inventarisasi yang dilakukan masih menggunakan tally sheet, akan tetapi memiliki efektifitas yang rendah dalam hal tabulasi data sehingga diperlukan satu terobosan untuk menunjang efektifitas inventarisasi tersebut. Jejak.in merupakan salah satu platfom digital yang mengembangkan pemantauan pohon dan jejak karbon berbasis digital (aplikasi android) sehingga perlu untuk dilakukan uji implementasi dalam perpektif efektifitas. Penelitian ini dilakukan di Taman Keanekaragaman hayati (KEHATI) PT. Tirta Investama Pabrik Klaten/ AQUA Klaten Kecamatan Polanharjo, Desa Wangen dan Ponggok dengan durasi waktu 1 bulan. Metode yang digunakan dalam penelitian adalah metode sensus yang artinya total keseluruhan pohon di Taman KEHATI AQUA Klaten diambil secara menyeluruh dan merata. Hasil dari penelitian ini menunjukan bahwa penggunakan aplikasi Jejak.in mampu memberikan efektifitas pengambilan data dan memberikan informasi secara lengkap pada luasan 4,86 Ha dengan total 1048 Pohon yang terdiri dari 59 spesies dengan kesehatan pohon kondisi baik sebanyak 958 pohon, kering sebanyak 26 pohon, terkena hama sebanyak 61 pohon, kondisi mati sebanyak 3 pohon, sedangkan pada taksiran stok karbon di Taman KEHATI AQUA Klaten pada 5 tahun mendatang (2026) sebesar 40,003 Gt . \u0000Kata kunci : Karbon, jejak.in, Pemantauan","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2022-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84791606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Landfire is one of the main factors of peat forest degradation. This work aims to look for species composition, vegetation structure, and post-fire species diversity. This research is situated in a peat forest area at an administrative zone of Desa Tumbang Bulan, around Sebangau National Park of Central Kalimantan being burned in 2015. The research is conducted using a quadratic plot. The observed parameter includes the species composition of stand structure and its ecology characteristics, i.e. Diversity Index, Richness Index, Evenness Index, and Similarity Index. The result showed the vegetation species in the research site are 101 species classified into 52 families which spread in many levels, i.e. seedling, sapling, pole, tree, and bottom plant. Pandanus sp. and Combretocarpus rotundatus are among the species of tree and bottom plant habitat with the highest NPJ. The index diversity, species richness, and evenness of this habitat range from low to high index value, while the inter-site and inter-growth levels of community similarity are low in general. The horizontal stand structure in the research site had a different exposed diameter that resembles the upside down of the "J" curve and concentrated on 10-<20 cm class diameter. Kata kunci (Keywords): Peat Swamp Forest, species composition, vegetation structure, growth
{"title":"Komposisi Jenis dan Struktur Vegetasi Hutan Gambut Di Desa Tumbang Bulan Taman Nasional Sebangau","authors":"Setiarno, Laksana Atyasa, Muhammad Luthfi S.","doi":"10.36873/jht.v17i2.7518","DOIUrl":"https://doi.org/10.36873/jht.v17i2.7518","url":null,"abstract":"Landfire is one of the main factors of peat forest degradation. This work aims to look for species composition, vegetation structure, and post-fire species diversity. This research is situated in a peat forest area at an administrative zone of Desa Tumbang Bulan, around Sebangau National Park of Central Kalimantan being burned in 2015. The research is conducted using a quadratic plot. The observed parameter includes the species composition of stand structure and its ecology characteristics, i.e. Diversity Index, Richness Index, Evenness Index, and Similarity Index. The result showed the vegetation species in the research site are 101 species classified into 52 families which spread in many levels, i.e. seedling, sapling, pole, tree, and bottom plant. Pandanus sp. and Combretocarpus rotundatus are among the species of tree and bottom plant habitat with the highest NPJ. The index diversity, species richness, and evenness of this habitat range from low to high index value, while the inter-site and inter-growth levels of community similarity are low in general. The horizontal stand structure in the research site had a different exposed diameter that resembles the upside down of the \"J\" curve and concentrated on 10-<20 cm class diameter. \u0000 Kata kunci (Keywords): Peat Swamp Forest, species composition, vegetation structure, growth","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2022-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78003215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wood is one of the forest products needed by humans for various uses, including as construction material, crafts, furniture and so on. The solution to save the use of wood by extending the life of the wood through the wood preservation process. The wood used in this study used Bayur wood (Pterospermum javanicum Jungh.). Bayur wood is a typical type of wood from the tropics belonging to durable class IV (easy to rot) which is wood that is easily attacked by wood-destroying organisms such as subterranean termites. Bayur wood grows and develops in secondary forest, with an altitude below 1,000 mdpl (Salmayanti et al., 2013). The aim of this research is:.(1) To determine the effect of immersion time on the value of absorption, retention and penetration of bayur wood preservation. (2) To determine the effect of the concentration of neem leaf extract preservative on the absorption, retention and penetration values of bayur wood preservation. (3) To determine the interaction effect of immersion time and concentration of neem leaf extract preservative on the absorption, retention and penetration values of bayur wood preservation. The results of this study indicate the conclusions that can be drawn as follows: (1) The immersion time has no effect on the value of absorption, theoretical retention, actual retention, and penetration of bayur wood immersion using neem leaf extract. (2) The concentration of preservatives has no effect on the value of absorption, theoretical retention, actual retention, and penetration. (3) The interaction between the length of immersion time and the concentration of preservatives did not affect the value of absorption, theoretical retention, actual retention, and penetration.
木材是人类需要的各种用途的林产品之一，包括建筑材料、工艺品、家具等。解决方案是通过木材防腐工艺延长木材的使用寿命，从而节约木材的使用。本研究使用的木材为Bayur木(Pterospermum javanicum Jungh.)。Bayur木材是一种典型的热带木材，属于耐用的IV级(易腐烂)，这种木材很容易受到破坏木材的生物(如地下白蚁)的攻击。Bayur木材生长发育在次生林中，海拔低于1000 mdpl (Salmayanti et al.， 2013)。本研究的目的是:(1)确定浸渍时间对bayur木材防腐吸收、滞留和渗透值的影响。(2)确定印楝叶提取物防腐剂的浓度对bayur木材防腐的吸收、滞留和渗透值的影响。(3)确定浸渍时间和印楝叶提取物防腐剂浓度对bayur木材防腐的吸收、滞留和渗透值的交互作用。研究结果表明:(1)浸渍时间对印楝叶提取物浸渍bayur木材的吸收量、理论滞留量、实际滞留量和渗透量均无影响。(2)防腐剂的浓度对吸收量、理论滞留量、实际滞留量、渗透量均无影响。(3)浸渍时间长短与防腐剂浓度之间的交互作用不影响吸收、理论保留、实际保留和渗透的值。
{"title":"The Effect of Cold Soaking Duration and Concentration ff Preservatives on Preservation of Bayur (Pterospermum Javanicum) Using Preservative Extract Mimba Leaf (Azadirachta Indica)","authors":"Patriot Muslim, F. Wulandari, Hairil Anwar","doi":"10.36873/jht.v17i2.5235","DOIUrl":"https://doi.org/10.36873/jht.v17i2.5235","url":null,"abstract":"Wood is one of the forest products needed by humans for various uses, including as construction material, crafts, furniture and so on. The solution to save the use of wood by extending the life of the wood through the wood preservation process. The wood used in this study used Bayur wood (Pterospermum javanicum Jungh.). Bayur wood is a typical type of wood from the tropics belonging to durable class IV (easy to rot) which is wood that is easily attacked by wood-destroying organisms such as subterranean termites. Bayur wood grows and develops in secondary forest, with an altitude below 1,000 mdpl (Salmayanti et al., 2013). The aim of this research is:.(1) To determine the effect of immersion time on the value of absorption, retention and penetration of bayur wood preservation. (2) To determine the effect of the concentration of neem leaf extract preservative on the absorption, retention and penetration values of bayur wood preservation. (3) To determine the interaction effect of immersion time and concentration of neem leaf extract preservative on the absorption, retention and penetration values of bayur wood preservation. The results of this study indicate the conclusions that can be drawn as follows: (1) The immersion time has no effect on the value of absorption, theoretical retention, actual retention, and penetration of bayur wood immersion using neem leaf extract. (2) The concentration of preservatives has no effect on the value of absorption, theoretical retention, actual retention, and penetration. (3) The interaction between the length of immersion time and the concentration of preservatives did not affect the value of absorption, theoretical retention, actual retention, and penetration.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2022-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80910195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. N. Koroh, Mahdi Santoso, Fitri Diana Batubara, Milad Madiyawati, Nuwa Nuwa
Red Meranti was a commercial wood that is widely used as a raw material for the timber industry (plywood and sawmill industry), and generated a lot of waste. Currently, the utilization of red meranti waste has not been utilized optimally. One of the optimizing utilization of that waste was for developing a Particleboard with the citric acid natural binder. The objective of this study was to determine the bonding properties of Sawmill Waste Red Meranti Particleboard bonded with a Citric Acid Natural Adhesive. Citric acid was dissolved in water with the concentration of the solution adjusted to 60 wt%. This adhesive solution was sprayed onto the 40 mesh (coarse) and 40 mesh (fine) particles at 10% and 20% resin content based on the weight of oven-dried particles. Each mixture was then hot pressed at 110°C for 15 min under 50 kg/cm² pressure. Density and dimension targets were 0.7 kg/cm³; 30 × 30 × 1 cm. Each experiment was performed in triplicate, and the average value and standard deviation were calculated. The results showed that the interaction of particle size and adhesive content had a very significant effect on density, internal bonding, and screw-holding strength and had no significant effect on moisture content, thickness swelling, and modulus of rupture (MOR). Based on the SNI 03-2105-2006, the physical properties that meet the standard were moisture content and. Meanwhile, the mechanical properties of sawmill waste red meranti particleboard have not met the SNI 03-2105-2006. Kata kunci (Keywords): Sawmill waste, red meranti waste, citric acid, natural binder.
{"title":"Pemanfaatan Limbah Penggergajian Kayu Meranti Merah Sebagai Bahan Baku Papan Partikel Kerapatan Sedang Dengan Perekat Alami Asam Sitrat","authors":"D. N. Koroh, Mahdi Santoso, Fitri Diana Batubara, Milad Madiyawati, Nuwa Nuwa","doi":"10.36873/jht.v17i2.7537","DOIUrl":"https://doi.org/10.36873/jht.v17i2.7537","url":null,"abstract":"Red Meranti was a commercial wood that is widely used as a raw material for the timber industry (plywood and sawmill industry), and generated a lot of waste. Currently, the utilization of red meranti waste has not been utilized optimally. One of the optimizing utilization of that waste was for developing a Particleboard with the citric acid natural binder. The objective of this study was to determine the bonding properties of Sawmill Waste Red Meranti Particleboard bonded with a Citric Acid Natural Adhesive. Citric acid was dissolved in water with the concentration of the solution adjusted to 60 wt%. This adhesive solution was sprayed onto the 40 mesh (coarse) and 40 mesh (fine) particles at 10% and 20% resin content based on the weight of oven-dried particles. Each mixture was then hot pressed at 110°C for 15 min under 50 kg/cm² pressure. Density and dimension targets were 0.7 kg/cm³; 30 × 30 × 1 cm. Each experiment was performed in triplicate, and the average value and standard deviation were calculated. The results showed that the interaction of particle size and adhesive content had a very significant effect on density, internal bonding, and screw-holding strength and had no significant effect on moisture content, thickness swelling, and modulus of rupture (MOR). Based on the SNI 03-2105-2006, the physical properties that meet the standard were moisture content and. Meanwhile, the mechanical properties of sawmill waste red meranti particleboard have not met the SNI 03-2105-2006. \u0000Kata kunci (Keywords): Sawmill waste, red meranti waste, citric acid, natural binder.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2022-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84908869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mahdi Santoso, D. N. Koroh, Prona Rogaya Rambe, G. Siska, Yanarita Yanarita
This research aims to determine the effect of particle sizes (10 mesh, 20 mesh, and 30 mesh) on the physical and mechanical properties of particleboards made from industry waste of PT. Aldi Mandomai Furniture, based on JIS A 5903: 2003 Standard. . Particleboards size were 30 x30x1,5 cm, density 0,5 g/cm3. Moisture content particles at 5%, particles glued with urea-formaldehyde adhesives, weight 10%, hot press pressured with temperature 110 ± 20C for 15 minutes, pressure 25 kg/ cm2. Furthermore, particleboards must be conditioned for ± 14 days/ 2 weeks. Particleboards were cut into sample test according to the size in the JIS A 5903:2003 standard. Research design used Completely Random Design with one factor. Data analyzed using analysis of variance, if data was significant must to do areal difference test. The observed to particle size with 3 levels are 10 mesh, 20 mesh, and 30 mesh. The results of physical properties were Density ( a.v. 0,46 – 0,49 g/cm³), Moisture Content (a.v. 12,22 – 14,05%), Water Absorption (a.v 129,79 – 167,03%), and Thickness Swelling (a.v 11,43 – 22,08%). The results of mechanical properties were internal bonding (0,0075 - 0,0204 N/mm2), Modulus of Elasticity (a.v. 5,91 – 25,32 N/mm2), Modulus of Rupture (a.v 0,52 – 1,52 N/mm2 ), and Screw Holding (a.v. 29,42 – 104,60 N). Particleboards made from furniture industry waste with particle size 10 mesh was significantly to physical properties, except density and fulfill JIS A 5903:2003, while the mechanical properties of particleboard are not fulfill the standard.
{"title":"Sifat Fisika dan Mekanika Papan Partikel Berbahan Limbah Industri PT. Aldi Mandomai Mebel","authors":"Mahdi Santoso, D. N. Koroh, Prona Rogaya Rambe, G. Siska, Yanarita Yanarita","doi":"10.36873/jht.v17i1.4465","DOIUrl":"https://doi.org/10.36873/jht.v17i1.4465","url":null,"abstract":"This research aims to determine the effect of particle sizes (10 mesh, 20 mesh, and 30 mesh) on the physical and mechanical properties of particleboards made from industry waste of PT. Aldi Mandomai Furniture, based on JIS A 5903: 2003 Standard. . Particleboards size were 30 x30x1,5 cm, density 0,5 g/cm3. Moisture content particles at 5%, particles glued with urea-formaldehyde adhesives, weight 10%, hot press pressured with temperature 110 ± 20C for 15 minutes, pressure 25 kg/ cm2. Furthermore, particleboards must be conditioned for ± 14 days/ 2 weeks. Particleboards were cut into sample test according to the size in the JIS A 5903:2003 standard. Research design used Completely Random Design with one factor. Data analyzed using analysis of variance, if data was significant must to do areal difference test. The observed to particle size with 3 levels are 10 mesh, 20 mesh, and 30 mesh. The results of physical properties were Density ( a.v. 0,46 – 0,49 g/cm³), Moisture Content (a.v. 12,22 – 14,05%), Water Absorption (a.v 129,79 – 167,03%), and Thickness Swelling (a.v 11,43 – 22,08%). The results of mechanical properties were internal bonding (0,0075 - 0,0204 N/mm2), Modulus of Elasticity (a.v. 5,91 – 25,32 N/mm2), Modulus of Rupture (a.v 0,52 – 1,52 N/mm2 ), and Screw Holding (a.v. 29,42 – 104,60 N). Particleboards made from furniture industry waste with particle size 10 mesh was significantly to physical properties, except density and fulfill JIS A 5903:2003, while the mechanical properties of particleboard are not fulfill the standard.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2022-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72496556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Petrisly Perkasa, Yusuf Aguswan, Samuel Layang, Prasatya Aji Santoso, Glen Wildodo
The capital city of Central Kalimantan, namely Palangka Raya City, almost every year there are always forest and land fires that harm many people both economically, socially and environmentally which will certainly hinder the development of this city, Palangka Raya has a fire-prone area of 33,824 ha. Monitoring forest and land fires with manual field visits which can be very time consuming. To shorten the time and expand the ability to monitor forest and land fires, the use of Unmanned Aerial Vehicles (UAV) or drone images is one solution to map fire-prone areas in all fields. The aerial photography produced by the UAV is processed using the photogrammetric method to produce a responsible aerial photo map covering an area of 41.92 with 17 benchmark points to block fires in the UPR campus forest from spreading.
{"title":"Pemetaan Udara Dengan Pesawat Tanpa Awak Untuk Survey Cepat Karhutla Di Provinsi Kalimantan Tengah","authors":"Petrisly Perkasa, Yusuf Aguswan, Samuel Layang, Prasatya Aji Santoso, Glen Wildodo","doi":"10.36873/jht.v17i1.3806","DOIUrl":"https://doi.org/10.36873/jht.v17i1.3806","url":null,"abstract":"The capital city of Central Kalimantan, namely Palangka Raya City, almost every year there are always forest and land fires that harm many people both economically, socially and environmentally which will certainly hinder the development of this city, Palangka Raya has a fire-prone area of 33,824 ha. Monitoring forest and land fires with manual field visits which can be very time consuming. To shorten the time and expand the ability to monitor forest and land fires, the use of Unmanned Aerial Vehicles (UAV) or drone images is one solution to map fire-prone areas in all fields. The aerial photography produced by the UAV is processed using the photogrammetric method to produce a responsible aerial photo map covering an area of 41.92 with 17 benchmark points to block fires in the UPR campus forest from spreading.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72917316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Noor Farikhah Haneda, Lufthi Rusniarsyah, Muhammad Ridho Robbani
Lebah kelulut (Tetragonula laeviceps) merupakan salah satu jenis lebah yang tidak memiliki sengat (stingless bee) dan termasuk serangga sosial tingkat tinggi yang hidup berkoloni. Penelitian ini bertujuan untuk menguji aktivitas terbang keluar-masuk lebah kelulut dari sarang, pengaruh faktor lingkungan terhadap aktivitas terbang lebah kelulut, perkembangan bobot koloni, dan melihat potensi sumber pakan yang ada di sekitar lokasi penelitian. Hasil penelitian menunjukkan bahwa aktivitas terbanyak terjadi pada pukul 09.00 WIB (keluar sarang), 11.00 WIB (masuk sarang), 07.00 WIB (membawa polen). Analisis korelasi Spearman menunjukkan bahwa aktivitas keluar sarang dan masuk sarang dipengaruhi oleh intensitas cahaya. Nilai korelasi yang diperoleh yaitu rs = 0.414, p > 0.01 (keluar sarang) danrs = 0.470, p < 0.01 (masuk sarang). Aktivitas membawa polen dipengaruhi oleh kelembaban relatif dengan nilai rs = 0.705, p < 0.05. Selama dua bulan pengamatan, perkembangan bobot koloni didapatkan hasil sebesar 8.1%. Potensi sumber pakan di sekitar lokasi penelitian cukup melimpah. Didapatkan sebanyak 20 jenis tanaman bunga maupun tegakan yang mengandung nektar, polen, serta resin.
蜂群是一种没有毒刺的蜜蜂，包括群居的群居昆虫。本研究旨在测试蜜蜂进出蜂巢的飞移活动、环境因素对蜜蜂飞行活动的影响、群落质量的发展以及观察研究地点周围潜在的饲料来源。研究表明，大多数活动发生在上午9点，上午11点，下午7点(携带波兰语)。对Spearman相关性的分析表明，光的强度影响了外部和内部的活动。相关值为rs = 1014, p > 0.01 (out of hive)， danrs = 1070, p < 0.01 (in the hive)。携带携带的活动受到rs = 0.705级相对湿度的影响，p < 0.05。在两个月的观察中，殖民地体重的增加达到了8.1%。研究地点周围潜在的信息源是丰富的。有20种开花植物和蒸馏植物，它们含有花蜜、波兰和树脂。
{"title":"Aktivitas Terbang dan Perkembangan Koloni Lebah Kelulut (Tetragonula laeviceps) di Kampus IPB Darmaga Bogor","authors":"Noor Farikhah Haneda, Lufthi Rusniarsyah, Muhammad Ridho Robbani","doi":"10.36873/jht.v17i1.4354","DOIUrl":"https://doi.org/10.36873/jht.v17i1.4354","url":null,"abstract":"Lebah kelulut (Tetragonula laeviceps) merupakan salah satu jenis lebah yang tidak memiliki sengat (stingless bee) dan termasuk serangga sosial tingkat tinggi yang hidup berkoloni. Penelitian ini bertujuan untuk menguji aktivitas terbang keluar-masuk lebah kelulut dari sarang, pengaruh faktor lingkungan terhadap aktivitas terbang lebah kelulut, perkembangan bobot koloni, dan melihat potensi sumber pakan yang ada di sekitar lokasi penelitian. Hasil penelitian menunjukkan bahwa aktivitas terbanyak terjadi pada pukul 09.00 WIB (keluar sarang), 11.00 WIB (masuk sarang), 07.00 WIB (membawa polen). Analisis korelasi Spearman menunjukkan bahwa aktivitas keluar sarang dan masuk sarang dipengaruhi oleh intensitas cahaya. Nilai korelasi yang diperoleh yaitu rs = 0.414, p > 0.01 (keluar sarang) danrs = 0.470, p < 0.01 (masuk sarang). Aktivitas membawa polen dipengaruhi oleh kelembaban relatif dengan nilai rs = 0.705, p < 0.05. Selama dua bulan pengamatan, perkembangan bobot koloni didapatkan hasil sebesar 8.1%. Potensi sumber pakan di sekitar lokasi penelitian cukup melimpah. Didapatkan sebanyak 20 jenis tanaman bunga maupun tegakan yang mengandung nektar, polen, serta resin.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74869703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Natural salt-licks are visited frequently by various species of terrestrial mammals, but the variability in environmental conditions can modify the mammalian visitation pattern in an inland tropical forest. Given that no similar research has been conducted at Segaliud-Lokan Forest Reserve in Sabah (Malaysia), a scientific research was conducted from July 2019 to February 2020 (eight months), to investigate the effects of variability in the environmental conditions on mammalian visitation patterns to the local natural salt-licks, applying the field assessment and camera trapping techniques. Over all, a total of 12 different mammal species were recorded at four selected salt-licks, and then the visitation frequencies of certain species were confirmed to be significantly influenced by the seasonal variability in rainfall patterns, and also by the variations in onsite and surrounding conditions. Further research is required to validate the influences of variability in explanatory variables that were not included in this scientific study. Kata kunci (Keywords): Environmental Condition, Natural Salt-lick, Segaliud-Lokan Forest Reserve, Terrestrial Mammals
{"title":"Variability in the Patterns of Terrestrial Mammals in Visiting The Natural Salt-Licks At a Tropical Forest","authors":"A. R. Mojiol, W. Lim","doi":"10.36873/jht.v17i1.4714","DOIUrl":"https://doi.org/10.36873/jht.v17i1.4714","url":null,"abstract":"Natural salt-licks are visited frequently by various species of terrestrial mammals, but the variability in environmental conditions can modify the mammalian visitation pattern in an inland tropical forest. Given that no similar research has been conducted at Segaliud-Lokan Forest Reserve in Sabah (Malaysia), a scientific research was conducted from July 2019 to February 2020 (eight months), to investigate the effects of variability in the environmental conditions on mammalian visitation patterns to the local natural salt-licks, applying the field assessment and camera trapping techniques. Over all, a total of 12 different mammal species were recorded at four selected salt-licks, and then the visitation frequencies of certain species were confirmed to be significantly influenced by the seasonal variability in rainfall patterns, and also by the variations in onsite and surrounding conditions. Further research is required to validate the influences of variability in explanatory variables that were not included in this scientific study. \u0000Kata kunci (Keywords): Environmental Condition, Natural Salt-lick, Segaliud-Lokan Forest Reserve, Terrestrial Mammals","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86688354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Keuntungan pembuatan papan laminasi antara lain mampu mereduksi cacat-cacat kayu, efisiensi pemanfaatan bahan baku kayu, memiliki nilai estetika dan mudah dalam perawatan Penelitian ini bertujuan untuk mengetahui apakah terdapat kenaikan kelas kuat setelah kayu sengon dibuat menjadi papan laminasi dengan menguji sifat fisika dan mekanikanya. Metode yang digunakan metode eksperimen; Berat labur perekat tidak berpengaruh nyata pada semua pengujian sifat fisika dan mekanika papan laminasi kayu sengon kecuali pada pengujian kadar air dan kerapatan. Semua nilai pengujian sifat fisika papan laminasi kayu sengon telah memenuhi standar SNI 03-2105-2006 dan JAS 234-2007 (JSA 2007) kecuali pada pengujian penyusutan tebal. Sifat mekanika tidak memenuhi standar JAS 234-2007. Berdasarkan nilai berat jenis, MoE dan MoR maka papan laminasi kayu sengon masuk dalam kelas kuat IV. Berdasarkan hal tersebut maka dapat disimpulkan bahwa kayu sengon tidak mengalami peningkatan kekuatan kayu setelah dibuat papan laminasi sehingga hanya dapat digunakan untuk konstruksi bangunan ringan, kerajinan dan meubel.
{"title":"Sifat Fisika dan Mekanika Papan Laminasi Kayu Sengon","authors":"F. Wulandari, Radjali Amin","doi":"10.36873/jht.v17i1.4155","DOIUrl":"https://doi.org/10.36873/jht.v17i1.4155","url":null,"abstract":"Keuntungan pembuatan papan laminasi antara lain mampu mereduksi cacat-cacat kayu, efisiensi pemanfaatan bahan baku kayu, memiliki nilai estetika dan mudah dalam perawatan Penelitian ini bertujuan untuk mengetahui apakah terdapat kenaikan kelas kuat setelah kayu sengon dibuat menjadi papan laminasi dengan menguji sifat fisika dan mekanikanya. Metode yang digunakan metode eksperimen; Berat labur perekat tidak berpengaruh nyata pada semua pengujian sifat fisika dan mekanika papan laminasi kayu sengon kecuali pada pengujian kadar air dan kerapatan. Semua nilai pengujian sifat fisika papan laminasi kayu sengon telah memenuhi standar SNI 03-2105-2006 dan JAS 234-2007 (JSA 2007) kecuali pada pengujian penyusutan tebal. Sifat mekanika tidak memenuhi standar JAS 234-2007. Berdasarkan nilai berat jenis, MoE dan MoR maka papan laminasi kayu sengon masuk dalam kelas kuat IV. Berdasarkan hal tersebut maka dapat disimpulkan bahwa kayu sengon tidak mengalami peningkatan kekuatan kayu setelah dibuat papan laminasi sehingga hanya dapat digunakan untuk konstruksi bangunan ringan, kerajinan dan meubel.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2022-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87238102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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