Adelia Juli Kardika, Khilma Sufiana, A. Rahman, Humairo Aziza
Jeneberang watershed is one of the watersheds in the MAMMINASATA area (Maros, Makassar, Sungguminasa and Takalar). The watershed, upstream, is now in a critical condition. This study aims to identify and map land use patterns, carbon stock emissions, both in the present condition and after rehabilitation condition. The data and information used in this research are Landsat 7 ETM+ in 2006 and 2010, the Jeneberang watershed boundary map, critical land map, forest area map, rainfall data, population data, and land capability class map. The method used is the interpretation of land use or land cover, biomass calculation, and analysis with REDD ABACUS. The results showed that land use was dominated by plantations and then followed by low density forest, agricultural dry land, rice fields, water bodies, plantation forests, vacant land, shrubs, settlements, high density forests, and savannas. The direction of land cover/land use that can increase carbon sequestration is the conversion of barren land, shrubs and savannas into plantation forests and agroforestry. Potential carbon stocks for plantations, dry land agriculture and rice fields will increase to 2.295.626,32 tons in 2026.
{"title":"Arahan Perubahan Penggunaan Lahan Berbasis Rendah Emisi Karbon Di Hulu Das Jeneberang","authors":"Adelia Juli Kardika, Khilma Sufiana, A. Rahman, Humairo Aziza","doi":"10.36873/jht.v16i2.3539","DOIUrl":"https://doi.org/10.36873/jht.v16i2.3539","url":null,"abstract":"Jeneberang watershed is one of the watersheds in the MAMMINASATA area (Maros, Makassar, Sungguminasa and Takalar). The watershed, upstream, is now in a critical condition. This study aims to identify and map land use patterns, carbon stock emissions, both in the present condition and after rehabilitation condition. The data and information used in this research are Landsat 7 ETM+ in 2006 and 2010, the Jeneberang watershed boundary map, critical land map, forest area map, rainfall data, population data, and land capability class map. The method used is the interpretation of land use or land cover, biomass calculation, and analysis with REDD ABACUS. The results showed that land use was dominated by plantations and then followed by low density forest, agricultural dry land, rice fields, water bodies, plantation forests, vacant land, shrubs, settlements, high density forests, and savannas. The direction of land cover/land use that can increase carbon sequestration is the conversion of barren land, shrubs and savannas into plantation forests and agroforestry. Potential carbon stocks for plantations, dry land agriculture and rice fields will increase to 2.295.626,32 tons in 2026.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":"24 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77521077","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}
Acclimatization is an indicator of success in tissue culture techniques. Without acclimatization, the plant will remain in the bottle and have no value. Acclimatization is the transfer of plantlets from the microenvironment (in the bottle) to the external environment (soil, sand). The dendrobium orchid is a very popular type of orchid traded, but its growth rate is slow. Atonic ZPT and root most are ZPT which contain a lot of auxin. The purpose of the study was to compare the types and concentrations of PGR that were appropriate for the acclimatization of Dendrobium orchids in order to increase plant growth. The study was conducted experimentally using a non-factorial Completely Randomized Design (CRD) consisting of 7 treatment levels. The levels of treatment were as follows: control, atonic PGR 2 ml/l, atonic PGR 3 ml/l, atonic PGR 4 ml/l, PGR root most 2 ml/l, PGR root most 3 ml/l, and PGR root most 4 ml/l. Each treatment level was repeated 9 times. The results showed that giving atonic PGR and root most had a significant effect on the variables of plant height increase, leaf number increase and primary root length increase and had no significant effect on the increase in stem diameter. The best results were shown by giving atonic PGR at 3 ml/l in all variables except for the increase in primary root length, which was indicated by the treatment with PGR root at most 3 ml/l.
{"title":"Stimulasi Pertumbuhan Planlet Anggrek (Dendrobium Sp) Dengan Pemberian ZPT Atonik dan Root Most Pada Masa Aklimatisasi","authors":"Faradilla, Yuanita, F. Mentari","doi":"10.36873/jht.v16i2.3581","DOIUrl":"https://doi.org/10.36873/jht.v16i2.3581","url":null,"abstract":"Acclimatization is an indicator of success in tissue culture techniques. Without acclimatization, the plant will remain in the bottle and have no value. Acclimatization is the transfer of plantlets from the microenvironment (in the bottle) to the external environment (soil, sand). The dendrobium orchid is a very popular type of orchid traded, but its growth rate is slow. Atonic ZPT and root most are ZPT which contain a lot of auxin. The purpose of the study was to compare the types and concentrations of PGR that were appropriate for the acclimatization of Dendrobium orchids in order to increase plant growth. The study was conducted experimentally using a non-factorial Completely Randomized Design (CRD) consisting of 7 treatment levels. The levels of treatment were as follows: control, atonic PGR 2 ml/l, atonic PGR 3 ml/l, atonic PGR 4 ml/l, PGR root most 2 ml/l, PGR root most 3 ml/l, and PGR root most 4 ml/l. Each treatment level was repeated 9 times. The results showed that giving atonic PGR and root most had a significant effect on the variables of plant height increase, leaf number increase and primary root length increase and had no significant effect on the increase in stem diameter. The best results were shown by giving atonic PGR at 3 ml/l in all variables except for the increase in primary root length, which was indicated by the treatment with PGR root at most 3 ml/l.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":"19 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84429512","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}
Several plants founded in the field, for examples Swietenia macrophylla, Imperata cilindrica, carica papaya and Morinda citrifolia have chemical compounds that can be used as bioherbicide. The purpose of this research are to know content of Tannin and Flavonoid compounds in that plants and effect of interaction between type of leaf extract and bioherbicide solution formula i.e 10%, 20% and 30% againts effectivity of Ageratum conyzoides weeds control. Results of the research showed that leaf extract of S. macrophylla, I. cilindrica, C. papaya and M. citrifolia contain of Tannin and Flavonoid compounds with bioherbicide potential, with highest contain in S. macrophylla and lowest in I. cilindrica leaf extract. Interaction of type of leaf extract and solution formula gived very significant effect againts percentage of weed mortality and weed poisoning intensity of A. conyzoides weeds. Leaf extract of S. macrophylla, C. papaya and M. citrifoilia with 10-30% solution formula, were effective to control A. conyzoides weeds, with average of start time of weeds death was 3 days after bioherbicide application. Keywords : Bioherbicide, leaf extract, percentage of weed mortality, weed poisoning intensity
{"title":"Uji Efektivitas Beberapa Jenis Tanaman Berpotensi Bioherbisida untuk Mengendalikan Gulma Babadotan (Ageratum conyzoides)","authors":"K. Kusumaningsih","doi":"10.36873/jht.v16i2.3596","DOIUrl":"https://doi.org/10.36873/jht.v16i2.3596","url":null,"abstract":"Several plants founded in the field, for examples Swietenia macrophylla, Imperata cilindrica, carica papaya and Morinda citrifolia have chemical compounds that can be used as bioherbicide. The purpose of this research are to know content of Tannin and Flavonoid compounds in that plants and effect of interaction between type of leaf extract and bioherbicide solution formula i.e 10%, 20% and 30% againts effectivity of Ageratum conyzoides weeds control. Results of the research showed that leaf extract of S. macrophylla, I. cilindrica, C. papaya and M. citrifolia contain of Tannin and Flavonoid compounds with bioherbicide potential, with highest contain in S. macrophylla and lowest in I. cilindrica leaf extract. Interaction of type of leaf extract and solution formula gived very significant effect againts percentage of weed mortality and weed poisoning intensity of A. conyzoides weeds. Leaf extract of S. macrophylla, C. papaya and M. citrifoilia with 10-30% solution formula, were effective to control A. conyzoides weeds, with average of start time of weeds death was 3 days after bioherbicide application. \u0000Keywords : Bioherbicide, leaf extract, percentage of weed mortality, weed poisoning intensity \u0000 ","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":"360 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80230331","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}
Sukun (Artocarpus altilis Park. Fosberg) merupakan tanaman penghasil buah yang banyak dikawasan tropis.Buahnya dapat diolah menjadi berbagai jenis makanan, sedangkan daunnya dapat dijadikan sebagai obat berbagai macam penyakit. Salah satu upaya meningkatkan kualitas tanaman sukun adalah program pemuliaan untuk mendapatkan produktivitas tinggi yaitu dengan karakterisasi morfologi buah. Tujuan penelitian ini untuk mengkaji keragaman buah sukun di empat Kecamatan di wilayah Sleman, DIY berdasarkan karakter morfologi. Penelitian tersebut dilakukan pada bulan Desember 2020- Maret 2021. Karakter morfologi dilakukan dengan deskripsi pada buah sukun di empat Kecamatan sukun dari berbagai kecamatan di wilayah Sleman, DIY diperoleh 10 karakter fenotip kemudian dianalisis menggunakan software MVSP menggunakan metode UPGMA untuk mengetahui hubungan kemiripan yang ditampilkan dalam bentuk dendogram. Hubungan kekerabatan sukun tidak membentuk satu klaster berdasarkan daerah asal tetapi pengelompokan berdasarkan persamaan karakter yang dimiliki. Berdasarkan hasil analisis diperoleh hasil pengelompokan eempat buah sukun menjadi 3 klaster yaitu klaster I buah dari Kecamatan Ngemplak, klaster II terdiri dari buah Kecamatan Pakem dan Cangkringan, dan klaster III buah dari Kecamatan Ngemplak. Dari ketiga klaster tersebut mengelompok pada nilai koefisien 0,68 yang menunjukkan keragaman tinggi. Kata kunci : Keragaman morfologi, Artocarpus altilis Park. Fosberg., UPGMA.
{"title":"Kajian Morfologi Buah Sukun (Artocarpus altilis Park. Fosberg) di Kabupaten Sleman Bagian Utara D.I. Yogyakarta","authors":"Arini Al Ifah","doi":"10.36873/jht.v16i2.3574","DOIUrl":"https://doi.org/10.36873/jht.v16i2.3574","url":null,"abstract":"Sukun (Artocarpus altilis Park. Fosberg) merupakan tanaman penghasil buah yang banyak dikawasan tropis.Buahnya dapat diolah menjadi berbagai jenis makanan, sedangkan daunnya dapat dijadikan sebagai obat berbagai macam penyakit. Salah satu upaya meningkatkan kualitas tanaman sukun adalah program pemuliaan untuk mendapatkan produktivitas tinggi yaitu dengan karakterisasi morfologi buah. Tujuan penelitian ini untuk mengkaji keragaman buah sukun di empat Kecamatan di wilayah Sleman, DIY berdasarkan karakter morfologi. Penelitian tersebut dilakukan pada bulan Desember 2020- Maret 2021. Karakter morfologi dilakukan dengan deskripsi pada buah sukun di empat Kecamatan sukun dari berbagai kecamatan di wilayah Sleman, DIY diperoleh 10 karakter fenotip kemudian dianalisis menggunakan software MVSP menggunakan metode UPGMA untuk mengetahui hubungan kemiripan yang ditampilkan dalam bentuk dendogram. Hubungan kekerabatan sukun tidak membentuk satu klaster berdasarkan daerah asal tetapi pengelompokan berdasarkan persamaan karakter yang dimiliki. Berdasarkan hasil analisis diperoleh hasil pengelompokan eempat buah sukun menjadi 3 klaster yaitu klaster I buah dari Kecamatan Ngemplak, klaster II terdiri dari buah Kecamatan Pakem dan Cangkringan, dan klaster III buah dari Kecamatan Ngemplak. Dari ketiga klaster tersebut mengelompok pada nilai koefisien 0,68 yang menunjukkan keragaman tinggi. \u0000Kata kunci : Keragaman morfologi, Artocarpus altilis Park. Fosberg., UPGMA.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":"23 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80067945","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}
Aminah Firashinta, Irwan Mahakam Lesmono Aji, H. Anwar
Pengkoak Cave is a natural tourism object located in Nuraksa Forest Park West Nusa Tenggara.
彭阁洞是位于努拉萨森林公园西努沙登加拉的一个自然旅游景点。
{"title":"Identifikasi Potensi Objek Wisata Alam Gua Pengkoak di Taman Hutan Raya Nuraksa","authors":"Aminah Firashinta, Irwan Mahakam Lesmono Aji, H. Anwar","doi":"10.36873/jht.v16i2.3602","DOIUrl":"https://doi.org/10.36873/jht.v16i2.3602","url":null,"abstract":"Pengkoak Cave is a natural tourism object located in Nuraksa Forest Park West Nusa Tenggara.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":"17 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75555590","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}
Herianto, Mahdi Santoso, Rahel Yunita Simatupang, Wahyu Supriyati, Ahmad Mujaffar
Wood industry waste in Indonesia is very abundant, the percentage based on yield produced can reach 50% for sawdust, 70% for plywood industry waste, and 70% of forest harvesting waste. Wood pellets can be an alternative energy source and the availability of raw materials is very easy to find. Wood pellets are the main concern at this time because of the ease of use in raw materials and have environmentally friendly characteristics. The aims of this research was to investigate the characteristic of wood pellets from three types sawdust of wood waste from furniture industry on Palangkaraya city and compare the propreties of wood pellet with Indonesian National Standard (SNI 8021: 2018). This study used material from the sawdust waste of benuas (Shorea laevis Ridl), melur (Dacrydium spp), and jelutung rawa (Dyera polyphylla). Particles from those materials were made on 40-60 mesh, and to reduce the of extractive substances, the particles were extracted in hot water at 100°C for 3 hour. Pellets are made using single-pelletizer at room temperature with a pressure of 30 MPa for 4 hour. The target density of wood pellet was 1 g/cm³ with a diameter was 0.9 cm and length weas 4.5 cm. The results showed that the quality of Benuas, Melur and Jelutung Rawa wood pellets based on SNI 8021: 2018 wood pellet quality standards showed that the testing of wood pellets in general met the Indonesian National Standards except density. Based on the characteristics of the three types of sawdust waste studied based on specific gravity that the type of wood pulp with medium density as raw material for wood pellets that have the best quality because it has a lower water content of 3.72%, higher density 0.75 g / cm3, lower ash content 0.6%.
{"title":"Karakteristik Pelet Serbuk Gergaji Tiga Jenis Kayu Limbah Industri Mebel Sebagai Energi Alternatif Terbarukan","authors":"Herianto, Mahdi Santoso, Rahel Yunita Simatupang, Wahyu Supriyati, Ahmad Mujaffar","doi":"10.36873/jht.v16i2.3575","DOIUrl":"https://doi.org/10.36873/jht.v16i2.3575","url":null,"abstract":"Wood industry waste in Indonesia is very abundant, the percentage based on yield produced can reach 50% for sawdust, 70% for plywood industry waste, and 70% of forest harvesting waste. Wood pellets can be an alternative energy source and the availability of raw materials is very easy to find. Wood pellets are the main concern at this time because of the ease of use in raw materials and have environmentally friendly characteristics. The aims of this research was to investigate the characteristic of wood pellets from three types sawdust of wood waste from furniture industry on Palangkaraya city and compare the propreties of wood pellet with Indonesian National Standard (SNI 8021: 2018). This study used material from the sawdust waste of benuas (Shorea laevis Ridl), melur (Dacrydium spp), and jelutung rawa (Dyera polyphylla). Particles from those materials were made on 40-60 mesh, and to reduce the of extractive substances, the particles were extracted in hot water at 100°C for 3 hour. Pellets are made using single-pelletizer at room temperature with a pressure of 30 MPa for 4 hour. The target density of wood pellet was 1 g/cm³ with a diameter was 0.9 cm and length weas 4.5 cm. The results showed that the quality of Benuas, Melur and Jelutung Rawa wood pellets based on SNI 8021: 2018 wood pellet quality standards showed that the testing of wood pellets in general met the Indonesian National Standards except density. Based on the characteristics of the three types of sawdust waste studied based on specific gravity that the type of wood pulp with medium density as raw material for wood pellets that have the best quality because it has a lower water content of 3.72%, higher density 0.75 g / cm3, lower ash content 0.6%.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":"331 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77595543","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}
The research objectives were to find out: skill levels, work achievement (in producing tables, cabinets, and doors), differences in work achievement, and wage rates received by employees in each type of product. The study used the Non Stop Method and analyzed the data with the t-Test. The results showed that the highest average work unit (unit /week) on door products (4.25), following wardrobe products (4.16) and the smallest on table products (4.06). The more skilled the employee, the greater the work achievement, and vice versa. Employee achievement II (medium skills) on desk and cupboard products> employee I (less skilled) at ? 5%, employee achievement III (skilled) on wardrobe products> employee I at ? 1%. In the product door, employee achievement II> employee I at ? 1%, and employee achievement III> employee I at ? 5%. Based on the level of wages received by employees (Rp. / week) the most unattractive product to beworked on (produced) is a table.
{"title":"Prestasi Kerja Karyawan Meubel di Komplek Industri Kota Palangka Raya (Work Achievement of Furniture Employees in an Industrial Complex Palangka Raya City)","authors":"I. N. Surasana, Jumri Dulamin, Dolit","doi":"10.36873/jht.v14i1.331","DOIUrl":"https://doi.org/10.36873/jht.v14i1.331","url":null,"abstract":"The research objectives were to find out: skill levels, work achievement (in producing tables, cabinets, and doors), differences in work achievement, and wage rates received by employees in each type of product. The study used the Non Stop Method and analyzed the data with the t-Test. The results showed that the highest average work unit (unit /week) on door products (4.25), following wardrobe products (4.16) and the smallest on table products (4.06). The more skilled the employee, the greater the work achievement, and vice versa. Employee achievement II (medium skills) on desk and cupboard products> employee I (less skilled) at ? 5%, employee achievement III (skilled) on wardrobe products> employee I at ? 1%. In the product door, employee achievement II> employee I at ? 1%, and employee achievement III> employee I at ? 5%. Based on the level of wages received by employees (Rp. / week) the most unattractive product to beworked on (produced) is a table.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":"77 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72869653","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}
Kebakaran hutan merupakan salah satu bentuk gangguan ekologis yang makin sering terjadi dekade ini. Kebakaran hutan dan kabut asap yang terjadi sepanjang Juni – Oktober 2015 di Indonesia, telah berdampak buruk bagi perekonomian nasional. Kebakaran tersebut menghanguskan 2,6 juta hektarhutan dan lahan serta kerugian mencapai Rp 221 triliun. Pencegahan sejak awal perlu dilakukan dalam penanganan kebakaran hutan dan lahan. Salah satunya alternatif pencegahan adalah dengan menggunakan teknologi Penginderaan Jauh dan Sistem Informasi Geografis (SIG). Pada kajian ini dilakukan di Kawasan Kesatuan Hidrologis Gambut (KHG) Provinsi kalimantan Tengah. Dari hasil analisis didapatkan hasil bahwa a) Data MODIS dan Perangkat Lunak Sistem Informasi Geografis mempunyai kemempuan yang baik untuk melihat fenomena keruangan di Kawasan Hidrologis Gambut (KHG) Provinsi Kalimantan Tengah; b) Sebaran Hotspot di Kawasan Hidrologis Gambut (KHG) Provinsi Kalimantan Tengah mengikuti pola sebaran jaringan sungai dan jalan atau mengikuti aksessibilitas; c) Pola sebaran hotspot di Kawasan Hidrologis Gambut (KHG) Provinsi Kalimantan Tengah berdasarkan jaringan jalan adalah tersebar merata pada jarak 0 – 5.000 m dan menumpuk pada jarak > 5.000 m dan d) Pola sebaran hotspot di Kawasan Hidrologis Gambut (KHG) Provinsi Kalimantan Tengah berdasarkan jaringan sungai adalah lebih banyak pada jarak 0 – 2000 m dan dan merata pada jarak 2001 m - > 5.000 m
{"title":"Pola Sebaran Titik Panas (Hot Spot) di Kesatuan Hidrologis Gambut (KHG) Provinsi Kalimantan Tengah. Studi Kasus Tahun 2015-2017","authors":"Yusuf Aguswan","doi":"10.36873/jht.v14i1.330","DOIUrl":"https://doi.org/10.36873/jht.v14i1.330","url":null,"abstract":"Kebakaran hutan merupakan salah satu bentuk gangguan ekologis yang makin sering terjadi dekade ini. Kebakaran hutan dan kabut asap yang terjadi sepanjang Juni – Oktober 2015 di Indonesia, telah berdampak buruk bagi perekonomian nasional. Kebakaran tersebut menghanguskan 2,6 juta hektarhutan dan lahan serta kerugian mencapai Rp 221 triliun. Pencegahan sejak awal perlu dilakukan dalam penanganan kebakaran hutan dan lahan. Salah satunya alternatif pencegahan adalah dengan menggunakan teknologi Penginderaan Jauh dan Sistem Informasi Geografis (SIG). Pada kajian ini dilakukan di Kawasan Kesatuan Hidrologis Gambut (KHG) Provinsi kalimantan Tengah. Dari hasil analisis didapatkan hasil bahwa a) Data MODIS dan Perangkat Lunak Sistem Informasi Geografis mempunyai kemempuan yang baik untuk melihat fenomena keruangan di Kawasan Hidrologis Gambut (KHG) Provinsi Kalimantan Tengah; b) Sebaran Hotspot di Kawasan Hidrologis Gambut (KHG) Provinsi Kalimantan Tengah mengikuti pola sebaran jaringan sungai dan jalan atau mengikuti aksessibilitas; c) Pola sebaran hotspot di Kawasan Hidrologis Gambut (KHG) Provinsi Kalimantan Tengah berdasarkan jaringan jalan adalah tersebar merata pada jarak 0 – 5.000 m dan menumpuk pada jarak > 5.000 m dan d) Pola sebaran hotspot di Kawasan Hidrologis Gambut (KHG) Provinsi Kalimantan Tengah berdasarkan jaringan sungai adalah lebih banyak pada jarak 0 – 2000 m dan dan merata pada jarak 2001 m - > 5.000 m","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":"31 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82079137","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}
Lim Wing Shen, Syazwani Nisa Binti Anuar, A. R. Mojiol
Universiti Malaysia Sabah housed a dense secondary forest that served as one of the urban forests and green lungs in Kota Kinabalu of Sabah, and this urban forest was known as UMS Peak. Few formal and informal trails were established within UMS Peak, and their conditions were yet to be properly evaluated since their establishments in 2009. Therefore, a preliminary assessment was required to assess existing conditions of these urban forest trails within UMS Peak. Two identified formal trails (Waterfall Trail and Chancellery Trail) and one informal trail (Kg. E Trail) were selected for rapid visualobservation assessment. Distance from starting point, elevation, slope steepness, trail forest structure condition, visual value, and management condition for each trail were assessed at the sample posts established every 100 m along the trail. Surrounding plant community, facility and infrastructure, slope steepness, elevation, attractive scenicfeatures, recreational impact, and ground cover were insignificant different, while trail visibility, trail width, soil compaction, forest layer, potential risk, surrounding scenic invisibility, and trail management condition were determined to be significantly different, between the three trails. Chancellery Trail suffered from worse recreational impact, andthen Waterfall Trail was determined to be worse in trail condition compared to Kg. E Trail. Additionally, interior segments were discovered as main contributors to significant differences between trails. Therefore, further detailed evaluation on these informal and formal trails are required to obtain accurate information and much comprehensive understanding on factors with significant influences towards overall and segment conditions of these three different trails.
{"title":"Rapid Observational Assessment on Urban Forest Trails Established at UMS Peak of Universiti Malaysia Sabah","authors":"Lim Wing Shen, Syazwani Nisa Binti Anuar, A. R. Mojiol","doi":"10.36873/jht.v14i1.329","DOIUrl":"https://doi.org/10.36873/jht.v14i1.329","url":null,"abstract":"Universiti Malaysia Sabah housed a dense secondary forest that served as one of the urban forests and green lungs in Kota Kinabalu of Sabah, and this urban forest was known as UMS Peak. Few formal and informal trails were established within UMS Peak, and their conditions were yet to be properly evaluated since their establishments in 2009. Therefore, a preliminary assessment was required to assess existing conditions of these urban forest trails within UMS Peak. Two identified formal trails (Waterfall Trail and Chancellery Trail) and one informal trail (Kg. E Trail) were selected for rapid visualobservation assessment. Distance from starting point, elevation, slope steepness, trail forest structure condition, visual value, and management condition for each trail were assessed at the sample posts established every 100 m along the trail. Surrounding plant community, facility and infrastructure, slope steepness, elevation, attractive scenicfeatures, recreational impact, and ground cover were insignificant different, while trail visibility, trail width, soil compaction, forest layer, potential risk, surrounding scenic invisibility, and trail management condition were determined to be significantly different, between the three trails. Chancellery Trail suffered from worse recreational impact, andthen Waterfall Trail was determined to be worse in trail condition compared to Kg. E Trail. Additionally, interior segments were discovered as main contributors to significant differences between trails. Therefore, further detailed evaluation on these informal and formal trails are required to obtain accurate information and much comprehensive understanding on factors with significant influences towards overall and segment conditions of these three different trails.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":"90 1 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85617124","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}
Gimson Luhan, M. Damiri, Herwyn Joni, Yanciluk, Ahmad Mujaffar
The existence of the wood needs to be considered so that the use of wood for a particular use needs to pay attention to the quality of wood, both for wood for building materials, furniture, panels, crafts and so on. The weakness of wood compared to substitutes such as metal and concrete is its hygroscopic nature. The aim of this study was to determinethe effect of wood parts treatment on axial direction and sticker thickness on natural drying time on changes in the physical properties of gerunggang wood (Cratoxylon arborescens Bl.). While the expected benefits are as information material for the wood processing industry and wood users to be able to dry the wood properly. The research was conducted at the Forest Products Technology Laboratory for 3 months. Cutting is done by dividing the length of the stem into 3 (three) equal parts in the axial position, namely the base (a1), middle (a2) and end (a3), each cut length ± 2 m for the board (example drying test) ) with ± 2 cm thick and ± 15 cm long for example test of moisture content, specific gravity and shrinkage. The results showed that the average value of fresh water content, saturated point moisture content, and air dry water content had a tendency to decrease in value from the base to the end of the stem. The natural dryingtime has an average tendency to dry more quickly from the base to the end of the stem, with drying times ranging from 28-40 days or an average of 33 days. The end of the wood with a thickness of 3,5 cm sticker dries faster (25 days) with a defect 1 broken edge. Parts of wood with a sticker thickness of 3,5 cm dries faster than the thickness of the stickers 2,5 cm and 1,5 cm. The results of measurements of (BJ) density of gerunggang wood averaged 0,55 including the medium group (BJ 0,4-0,6). Specific gravity has a tendency to increase in value from the base to the end of the rod with an uneven pattern including type 3. The tangential and radial direction shrinkage ratio of 1,88 is included in the medium classification, then gerunggang wood can be used for boards and lightweight construction under the roof, crates, furniture, plywood andconcrete molds. It is recommended to conduct further research on the possibility of using gerunggang wood for artificial boards.Keywords: drying, wood parts, physical properties, gerunggang.
{"title":"Pengaruh Bagian Kayu dan Ketebalan Stiker pada Pengeringan Alami terhadap Sifat Fisika Kayu Gerunggang (Cratoxylon arborescens Bl.)","authors":"Gimson Luhan, M. Damiri, Herwyn Joni, Yanciluk, Ahmad Mujaffar","doi":"10.36873/jht.v14i1.333","DOIUrl":"https://doi.org/10.36873/jht.v14i1.333","url":null,"abstract":"The existence of the wood needs to be considered so that the use of wood for a particular use needs to pay attention to the quality of wood, both for wood for building materials, furniture, panels, crafts and so on. The weakness of wood compared to substitutes such as metal and concrete is its hygroscopic nature. The aim of this study was to determinethe effect of wood parts treatment on axial direction and sticker thickness on natural drying time on changes in the physical properties of gerunggang wood (Cratoxylon arborescens Bl.). While the expected benefits are as information material for the wood processing industry and wood users to be able to dry the wood properly. The research was conducted at the Forest Products Technology Laboratory for 3 months. Cutting is done by dividing the length of the stem into 3 (three) equal parts in the axial position, namely the base (a1), middle (a2) and end (a3), each cut length ± 2 m for the board (example drying test) ) with ± 2 cm thick and ± 15 cm long for example test of moisture content, specific gravity and shrinkage. The results showed that the average value of fresh water content, saturated point moisture content, and air dry water content had a tendency to decrease in value from the base to the end of the stem. The natural dryingtime has an average tendency to dry more quickly from the base to the end of the stem, with drying times ranging from 28-40 days or an average of 33 days. The end of the wood with a thickness of 3,5 cm sticker dries faster (25 days) with a defect 1 broken edge. Parts of wood with a sticker thickness of 3,5 cm dries faster than the thickness of the stickers 2,5 cm and 1,5 cm. The results of measurements of (BJ) density of gerunggang wood averaged 0,55 including the medium group (BJ 0,4-0,6). Specific gravity has a tendency to increase in value from the base to the end of the rod with an uneven pattern including type 3. The tangential and radial direction shrinkage ratio of 1,88 is included in the medium classification, then gerunggang wood can be used for boards and lightweight construction under the roof, crates, furniture, plywood andconcrete molds. It is recommended to conduct further research on the possibility of using gerunggang wood for artificial boards.Keywords: drying, wood parts, physical properties, gerunggang.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":"30 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2020-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88026474","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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