Pub Date : 2022-04-30DOI: 10.20886/ijfr.2022.9.1.87-97
B. Tesfaye, Y. Mengesha, Smegnew Melese Birlie, Marshet Nigatu Gebeyehu
Yushania alpina is an African endemic bamboo species, and it is a valuable resource in ecological and socioeconomically value in Ethiopia. However, low germination is a challenge for seedlings production besides its seed availability is scarce. To improve the seed germination capacity, using different germination ecology treatments are needed. Hence, this study was initiated to investigate the effects of different germination ecology, and to determine the qualities, size, and yield of Y. alpina seed. The collected matured fruits were processed, and then the cleaned (pure) and not cleaned (impure) seed were used for this study. This study had two phases; the first was to measure the purity, moisture content, seed character, seed yield; and the second was to investigate the effects of different germination ecology for in vitro seed germination of Y. alpina using pure and impure seeds. In this result, the purity, moisture content, seed size, seed weight, and grain yield were determined for cleaned Y. alpina seed. The interaction effects of seed type and germination ecology were highly significant on all germination parameters. The highest germination capacity (55%) of pure seed was recorded on T2 (paper + ambient temperature), followed by 38% on T1 (sand +ambient temperature), and 31% on T3 (paper + incubator (25°C)); however, these treatments produced lower results in the impure seed. In addition, the highest (23.5 days) mean germination time was recorded on T3, followed by 13.06 on T2 using impure seed, but the lowest (2.5 and 2.01) value was recorded on T1 and T2 of pure seeds. Hence, this result concluded that using sand media at ambient temperature as germination ecology is preferred to enhance the germination capacity of Y. alpina seed. Also, seed surface disinfection using antifungals is recommended to reduce seed contamination
{"title":"EFFECTS OF GERMINATION ECOLOGY ON IN VITRO GERMINATION PERFORMANCE OF HIGHLAND BAMBOO (Yushania alpina) SEED COLLECTED FROM KEFA, SOUTH WEST ETHIOPIA","authors":"B. Tesfaye, Y. Mengesha, Smegnew Melese Birlie, Marshet Nigatu Gebeyehu","doi":"10.20886/ijfr.2022.9.1.87-97","DOIUrl":"https://doi.org/10.20886/ijfr.2022.9.1.87-97","url":null,"abstract":"Yushania alpina is an African endemic bamboo species, and it is a valuable resource in ecological and socioeconomically value in Ethiopia. However, low germination is a challenge for seedlings production besides its seed availability is scarce. To improve the seed germination capacity, using different germination ecology treatments are needed. Hence, this study was initiated to investigate the effects of different germination ecology, and to determine the qualities, size, and yield of Y. alpina seed. The collected matured fruits were processed, and then the cleaned (pure) and not cleaned (impure) seed were used for this study. This study had two phases; the first was to measure the purity, moisture content, seed character, seed yield; and the second was to investigate the effects of different germination ecology for in vitro seed germination of Y. alpina using pure and impure seeds. In this result, the purity, moisture content, seed size, seed weight, and grain yield were determined for cleaned Y. alpina seed. The interaction effects of seed type and germination ecology were highly significant on all germination parameters. The highest germination capacity (55%) of pure seed was recorded on T2 (paper + ambient temperature), followed by 38% on T1 (sand +ambient temperature), and 31% on T3 (paper + incubator (25°C)); however, these treatments produced lower results in the impure seed. In addition, the highest (23.5 days) mean germination time was recorded on T3, followed by 13.06 on T2 using impure seed, but the lowest (2.5 and 2.01) value was recorded on T1 and T2 of pure seeds. Hence, this result concluded that using sand media at ambient temperature as germination ecology is preferred to enhance the germination capacity of Y. alpina seed. Also, seed surface disinfection using antifungals is recommended to reduce seed contamination","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44112036","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}
Pub Date : 2022-04-30DOI: 10.20886/ijfr.2022.9.1.99-120
F. A. Syamani, Agus Z. Arifqi, S. S. Munawar, S. Sudarmanto, L. Astari, K. W. Prasetiyo, Mohamad Gopar, I. Ismadi, S. S. Kusumah, M. Hussin, Subyakto Subyakto, Y. Hadi, K. Umemura
Citric acid was utilized as a bonding agent in the production of Sembilang bamboo particleboard. The limitation in using bamboo for particleboard production is that the silica content in bamboo skin can accelerate particleboard processing machines' bluntness and reduce particle adherence in particleboard manufacturing. This research aimed to investigate the influence of bamboo skin and citric acid content on the characteristics of Sembilang bamboo particleboard. Particleboards were prepared using bamboo particles (type A) and unskinned bamboo particles (type B). The citric acid solution (59%) was sprayed over the surface of bamboo particles to obtain three different levels of citric acid, i.e., 15, 20, and 25 % (based on bamboo particles’ dry weight). The Sembilang bamboo particleboards were manufactured using a hot-pressing machine at 200°C, 5 MPa for 10 min. The particleboard targeted density was 0.8 g/cm3. The type B particleboards’ internal bond (IB), modulus of rupture (MOR), water absorption (WA), and thickness swelling (TS) were superior compared to the type A particleboards. This was influenced by the lower concentration of silica in type B particleboards, which tend to allow an intimate contact area among particles and citric acid then produced better quality particleboards compared to type A particleboards. The type B particleboards met the obligation of JIS A 5908 for type 18 particleboard in terms of modulus of rupture, modulus of elasticity, and internal bond, however, only fulfilled the type 8 particleboard in terms of screw holding power. The physical properties of Sembilang bamboo particleboard were also improved when using type B bamboo particles and adhered with citric acid at a level of 25%.
以柠檬酸为粘结剂生产森必朗竹木刨花板。竹材用于刨花板生产的局限性是竹材皮中的二氧化硅含量会加速刨花板加工机器的钝性，降低刨花板制造过程中的颗粒粘附性。本研究旨在探讨竹皮和柠檬酸含量对森必朗竹刨花板性能的影响。用竹颗粒(A型)和未剥皮的竹颗粒(B型)制备刨花板。在竹颗粒表面喷洒柠檬酸溶液(59%)，得到柠檬酸含量为15%、20%和25%(根据竹颗粒的干重)的三种不同水平。采用热压机，在200℃、5 MPa、10 min条件下制备森必朗竹制刨花板。刨花板靶密度为0.8 g/cm3。B型刨花板的内粘接(IB)、断裂模量(MOR)、吸水率(WA)和厚度膨胀(TS)均优于A型刨花板。这是受B型刨花板中二氧化硅浓度较低的影响，这往往允许颗粒和柠檬酸之间的密切接触区域，从而生产出比A型刨花板质量更好的刨花板。B型刨花板在断裂模量、弹性模量和内部粘接方面满足JIS A 5908对18型刨花板的要求，但在螺杆持力方面仅满足8型刨花板的要求。采用B型竹颗粒并以25%的柠檬酸黏附时，森必朗竹刨花板的物理性能也得到改善。
{"title":"UTILIZATION OF CITRIC ACID AS BONDING AGENT IN SEMBILANG BAMBOO (Dendrocalamus giganteus Munro) PARTICLEBOARD PRODUCTION","authors":"F. A. Syamani, Agus Z. Arifqi, S. S. Munawar, S. Sudarmanto, L. Astari, K. W. Prasetiyo, Mohamad Gopar, I. Ismadi, S. S. Kusumah, M. Hussin, Subyakto Subyakto, Y. Hadi, K. Umemura","doi":"10.20886/ijfr.2022.9.1.99-120","DOIUrl":"https://doi.org/10.20886/ijfr.2022.9.1.99-120","url":null,"abstract":"Citric acid was utilized as a bonding agent in the production of Sembilang bamboo particleboard. The limitation in using bamboo for particleboard production is that the silica content in bamboo skin can accelerate particleboard processing machines' bluntness and reduce particle adherence in particleboard manufacturing. This research aimed to investigate the influence of bamboo skin and citric acid content on the characteristics of Sembilang bamboo particleboard. Particleboards were prepared using bamboo particles (type A) and unskinned bamboo particles (type B). The citric acid solution (59%) was sprayed over the surface of bamboo particles to obtain three different levels of citric acid, i.e., 15, 20, and 25 % (based on bamboo particles’ dry weight). The Sembilang bamboo particleboards were manufactured using a hot-pressing machine at 200°C, 5 MPa for 10 min. The particleboard targeted density was 0.8 g/cm3. The type B particleboards’ internal bond (IB), modulus of rupture (MOR), water absorption (WA), and thickness swelling (TS) were superior compared to the type A particleboards. This was influenced by the lower concentration of silica in type B particleboards, which tend to allow an intimate contact area among particles and citric acid then produced better quality particleboards compared to type A particleboards. The type B particleboards met the obligation of JIS A 5908 for type 18 particleboard in terms of modulus of rupture, modulus of elasticity, and internal bond, however, only fulfilled the type 8 particleboard in terms of screw holding power. The physical properties of Sembilang bamboo particleboard were also improved when using type B bamboo particles and adhered with citric acid at a level of 25%.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45252201","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}
Pub Date : 2022-04-30DOI: 10.20886/ijfr.2022.9.1.1-8
D. M. Putri, D. Junaedi, V. Kurniawan, Muhammad Efendi
Cibodas Botanical Garden (CBG) maintains not only native plant species but also introduced plant species. Some of these have been naturalized from CBG to the adjacent Mt. Gede-Pangrango National Park (GPNP). One of the reported naturalized species is Bartlettina sordida. Understanding species traits will give information for the future management of B. sordida. This research investigates the distribution of B. sordida in the Cibodas hiking trail and studies leaf traits variation of this species along with an altitudinal change in the Cibodas hiking trail. Samples were collected along the Cibodas hiking trail from the entrance gate to the Cibeureum waterfall. At every survey location, we recorded B. sordida occurrences. In the sample plots we also collected leaf samples from detected B. sordida. The leaves were then fixated using the hands-free method to observed stomatal type, density, and size. The leaves were also treated for specific leaf area (SLA) measurements. Stomata size is significantly correlated along the altitudinal gradient. Stomata density is negatively correlated but not significant along the altitudinal gradient. Stomata size is positively correlated with SLA. These traits are related to water-efficient adapting to GPNP climate, which is very different from its natural habitat. The ability to adapt to altitudinal gradient helps B. sordida to dominate the Cibodas hiking trail.
{"title":"LEAF TRAITS OF THE INVASIVE SPECIES Bartlettina sordida (Less.) R.M. King NATURALIZED IN CIBODAS HIKING TRAIL, MT. GEDE PANGRANGO NATIONAL PARK, WEST JAVA, INDONESIA","authors":"D. M. Putri, D. Junaedi, V. Kurniawan, Muhammad Efendi","doi":"10.20886/ijfr.2022.9.1.1-8","DOIUrl":"https://doi.org/10.20886/ijfr.2022.9.1.1-8","url":null,"abstract":"Cibodas Botanical Garden (CBG) maintains not only native plant species but also introduced plant species. Some of these have been naturalized from CBG to the adjacent Mt. Gede-Pangrango National Park (GPNP). One of the reported naturalized species is Bartlettina sordida. Understanding species traits will give information for the future management of B. sordida. This research investigates the distribution of B. sordida in the Cibodas hiking trail and studies leaf traits variation of this species along with an altitudinal change in the Cibodas hiking trail. Samples were collected along the Cibodas hiking trail from the entrance gate to the Cibeureum waterfall. At every survey location, we recorded B. sordida occurrences. In the sample plots we also collected leaf samples from detected B. sordida. The leaves were then fixated using the hands-free method to observed stomatal type, density, and size. The leaves were also treated for specific leaf area (SLA) measurements. Stomata size is significantly correlated along the altitudinal gradient. Stomata density is negatively correlated but not significant along the altitudinal gradient. Stomata size is positively correlated with SLA. These traits are related to water-efficient adapting to GPNP climate, which is very different from its natural habitat. The ability to adapt to altitudinal gradient helps B. sordida to dominate the Cibodas hiking trail.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44433716","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}
Pub Date : 2022-04-30DOI: 10.20886/ijfr.2022.9.1.63-72
D. H. Mursyidin, M. Rubiansyah, B. Badruzsaufari
Phalaenopsis amabilis (L.) Blume orchid is one of the most popular orchid species in the world. However, this ornamental plant is threatened in its natural habitat, the Meratus Mountains of South Kalimantan, Indonesia. This study determines and analyzes the genetic relationship among several morphological characteristics of P. amabilis from this region combined with molecular (RAPD) markers. A total of ten orchid samples comprised of nine moth orchids (P. amabilis) and one species (P. cornu-cervi) as an outgroup, as well as ten RAPD primers were used in this study. Based on the morphological markers, the moth orchids have a moderate level of genetic diversity, indicated by Shannon's index value of 0.5. In contrast to molecular markers, this germplasm shows high genetic polymorphism, shown by the polymorphism degree of 100% for all primers used. The cluster analysis shows that this germplasm can be divided into two clusters for morphological and five for molecular markers. Following these markers, the grouping of moth orchids was nearly corresponding to their origin. Thus, this information could be useful as a reference for orchid conservation and breeding programs in the future.
{"title":"GENETIC RELATIONSHIP OF SEVERAL MORPHOLOGICAL AND MOLECULAR CHARACTERISTICS OF Phalaenopsis amabilis (L.) Blume ORCHIDS FROM THE MERATUS MOUNTAINS OF SOUTH KALIMANTAN, INDONESIA","authors":"D. H. Mursyidin, M. Rubiansyah, B. Badruzsaufari","doi":"10.20886/ijfr.2022.9.1.63-72","DOIUrl":"https://doi.org/10.20886/ijfr.2022.9.1.63-72","url":null,"abstract":"Phalaenopsis amabilis (L.) Blume orchid is one of the most popular orchid species in the world. However, this ornamental plant is threatened in its natural habitat, the Meratus Mountains of South Kalimantan, Indonesia. This study determines and analyzes the genetic relationship among several morphological characteristics of P. amabilis from this region combined with molecular (RAPD) markers. A total of ten orchid samples comprised of nine moth orchids (P. amabilis) and one species (P. cornu-cervi) as an outgroup, as well as ten RAPD primers were used in this study. Based on the morphological markers, the moth orchids have a moderate level of genetic diversity, indicated by Shannon's index value of 0.5. In contrast to molecular markers, this germplasm shows high genetic polymorphism, shown by the polymorphism degree of 100% for all primers used. The cluster analysis shows that this germplasm can be divided into two clusters for morphological and five for molecular markers. Following these markers, the grouping of moth orchids was nearly corresponding to their origin. Thus, this information could be useful as a reference for orchid conservation and breeding programs in the future.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42049977","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}
Pub Date : 2022-04-30DOI: 10.20886/ijfr.2022.9.1.49-62
R. Fauzi, Aditya Kuspriyangga, F. Suarmadi, Teguh Heri Setianto, G. S. Saragih
Kancilan Flores (Pachycephala nudigula nudigula) is an iconic bird of Kelimutu National Park. The bird has a unique characteristic with the ability to make a wide variety of song. The local people call this bird 'Garugiwa' and also 'burung arwah' or 'spirit bird' because it is small and hard to spot but has a loud chirp. Some literature mentions this bird with different scientific names. This study aimed to identify this bird to rectify this misnaming scientifically and to observes Kancilan Flores behavior, habitat, and population. Kancilan Flores is an attractive fauna for tourists. Therefore, this study also recommended potential birdwatching locations for Kancilan Flores. This study used a transect line and direct observation methods. The results showed that the estimated population size of Kancilan Flores in the Kelimutu National Park was 1,667 individuals with a population size range of 1,245–2,089 individuals. The population density of Kancilan Flores was estimated at 0.53 individuals per hectare. The Kancilan Flores is most commonly found at an altitude of 1,500–1,600 m a.s.l. Recommended areas as bird watching locations for Kancilan Flores, namely the Edelweiss Garden, Perekonde, the lower Arboretum, and the Kancilan Flores middle Arboretum. Therefore, it is necessary to protect the population of Kancilan Flores by strictly prohibiting hunting and destruction of their habitat.
{"title":"KANCILAN FLORES (Pachycephala nudigula nudigula): THE ICONIC BIRD OF KELIMUTU NATIONAL PARK, INDONESIA","authors":"R. Fauzi, Aditya Kuspriyangga, F. Suarmadi, Teguh Heri Setianto, G. S. Saragih","doi":"10.20886/ijfr.2022.9.1.49-62","DOIUrl":"https://doi.org/10.20886/ijfr.2022.9.1.49-62","url":null,"abstract":"Kancilan Flores (Pachycephala nudigula nudigula) is an iconic bird of Kelimutu National Park. The bird has a unique characteristic with the ability to make a wide variety of song. The local people call this bird 'Garugiwa' and also 'burung arwah' or 'spirit bird' because it is small and hard to spot but has a loud chirp. Some literature mentions this bird with different scientific names. This study aimed to identify this bird to rectify this misnaming scientifically and to observes Kancilan Flores behavior, habitat, and population. Kancilan Flores is an attractive fauna for tourists. Therefore, this study also recommended potential birdwatching locations for Kancilan Flores. This study used a transect line and direct observation methods. The results showed that the estimated population size of Kancilan Flores in the Kelimutu National Park was 1,667 individuals with a population size range of 1,245–2,089 individuals. The population density of Kancilan Flores was estimated at 0.53 individuals per hectare. The Kancilan Flores is most commonly found at an altitude of 1,500–1,600 m a.s.l. Recommended areas as bird watching locations for Kancilan Flores, namely the Edelweiss Garden, Perekonde, the lower Arboretum, and the Kancilan Flores middle Arboretum. Therefore, it is necessary to protect the population of Kancilan Flores by strictly prohibiting hunting and destruction of their habitat.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45430018","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}
Pub Date : 2022-04-30DOI: 10.20886/ijfr.2022.9.1.73-85
A. Vatresia, R. Regen, F. P. Utama, Widhia Oktariani
Forest fires are still one of the most common problems in Indonesia. In fact, many of these forest fires origin from human activities, namely fires that are intentionally raised for a purpose such as widening the land to prepare for the planting season in the Nusa Tenggara Island. Forest fire events can be identified by observing hotspot data which are monitored through remote sensing satellites. Hotspot is an area that has a relatively higher surface temperature than the surrounding area based on certain temperature thresholds monitored by remote sensing satellites. The area is represented as a point that has certain coordinates. The actual fires can be monitored by observing the hotspot attribute, namely Confidence, Brightness Temperature and FRP (Fire Radiate Power). To find the similarities of the three mentioned attributes, the clustering process is carried out to make monitoring easier. The objective of this research is to cluster hotspots in the Nusa Tenggara and Bali Islands from year 2013 to 2018 using the K-Means Clustering Method with 28,519 hot spot data. This could be a benefit for the Ministry of Environment and Forestry in Indonesia to identify the priority level of the area to be monitored. By knowing this result, the ministry can use this data for patrol priority management. This research successfully clustered three types of hotspot classes based on the risk of fire with details as follow; High Risk Class contains 12,212 data with ranges of mean values of confidence in the range of 49.3–100%, brightness in the range of 305.1–421.3o K and FRP in the range of 2.5–714.3; Medium Risk contains 12,250 data mean values of confidence with a range of 20.3–74.3%, brightness in the range of 301.06–341.86o K and FRP in the range of 3.6–141.4; and Low Risk contains 4,057 data with a range of mean values of confidence in the range of 0–39.8%, brightness in the range of 300–365.86oK and FRP in the range of 3.5–275.6. All of the clusters were obtained by the implementation of K-Means clustering over the hotspot data and its parameter as mentioned, respectively. The cluster performance showed the confidential value of 88.45% accuracy using 100 hotspot data from 2019
{"title":"MINING FIRE HOTSPOTS OVER NUSA TENGGARA AND BALI ISLANDS","authors":"A. Vatresia, R. Regen, F. P. Utama, Widhia Oktariani","doi":"10.20886/ijfr.2022.9.1.73-85","DOIUrl":"https://doi.org/10.20886/ijfr.2022.9.1.73-85","url":null,"abstract":"Forest fires are still one of the most common problems in Indonesia. In fact, many of these forest fires origin from human activities, namely fires that are intentionally raised for a purpose such as widening the land to prepare for the planting season in the Nusa Tenggara Island. Forest fire events can be identified by observing hotspot data which are monitored through remote sensing satellites. Hotspot is an area that has a relatively higher surface temperature than the surrounding area based on certain temperature thresholds monitored by remote sensing satellites. The area is represented as a point that has certain coordinates. The actual fires can be monitored by observing the hotspot attribute, namely Confidence, Brightness Temperature and FRP (Fire Radiate Power). To find the similarities of the three mentioned attributes, the clustering process is carried out to make monitoring easier. The objective of this research is to cluster hotspots in the Nusa Tenggara and Bali Islands from year 2013 to 2018 using the K-Means Clustering Method with 28,519 hot spot data. This could be a benefit for the Ministry of Environment and Forestry in Indonesia to identify the priority level of the area to be monitored. By knowing this result, the ministry can use this data for patrol priority management. This research successfully clustered three types of hotspot classes based on the risk of fire with details as follow; High Risk Class contains 12,212 data with ranges of mean values of confidence in the range of 49.3–100%, brightness in the range of 305.1–421.3o K and FRP in the range of 2.5–714.3; Medium Risk contains 12,250 data mean values of confidence with a range of 20.3–74.3%, brightness in the range of 301.06–341.86o K and FRP in the range of 3.6–141.4; and Low Risk contains 4,057 data with a range of mean values of confidence in the range of 0–39.8%, brightness in the range of 300–365.86oK and FRP in the range of 3.5–275.6. All of the clusters were obtained by the implementation of K-Means clustering over the hotspot data and its parameter as mentioned, respectively. The cluster performance showed the confidential value of 88.45% accuracy using 100 hotspot data from 2019","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44563233","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}
Pub Date : 2022-04-30DOI: 10.20886/ijfr.2022.9.1.29-47
Sata Yoshida Srie Rahayu, D. Priatna, Rosadi Rosadi, S. Suryanto
Elephant Riding (ER) in zoos has become a matter of public interest, raising debates among experts regarding animal ethics, elephants’ welfare, and human safety. Through the submission of the Middle Hypothesis that ER tends to enhance human knowledge about conservation, this study’s aim is to provide strategies to help zoo managements in their works based on the basic principles of wildlife conservation and protection, especially Sumatran elephants. The participants’ knowledge was measured using questionnaires distributed to two groups of respondents: people who have and people who have not utilized ER services. Meanwhile, the strategy was recommended through the Analytical Hierarchy Process of 17 expert respondents. According to the independent sample t-test performed with 95% confidence level, human knowledge of elephant conservation increased significantly through ER. Furthermore, experts with consistency ratios (CR) ≤ 0.1 selected a strategy where environmental quality was prioritized as a recommended strategy in ER management. This strategy is to put forward the principles guaranteeing the elephants’ welfare, which has a criterion weight of 0.40717. The other recommended strategies include conducting conservation education (0.23973), ensuring the safety of visitors (0.22972), and improving the welfare of the community around zoo (0.12338).
{"title":"MANAGEMENT STRATEGY OF ELEPHANT RIDING AT THE ZOO","authors":"Sata Yoshida Srie Rahayu, D. Priatna, Rosadi Rosadi, S. Suryanto","doi":"10.20886/ijfr.2022.9.1.29-47","DOIUrl":"https://doi.org/10.20886/ijfr.2022.9.1.29-47","url":null,"abstract":"Elephant Riding (ER) in zoos has become a matter of public interest, raising debates among experts regarding animal ethics, elephants’ welfare, and human safety. Through the submission of the Middle Hypothesis that ER tends to enhance human knowledge about conservation, this study’s aim is to provide strategies to help zoo managements in their works based on the basic principles of wildlife conservation and protection, especially Sumatran elephants. The participants’ knowledge was measured using questionnaires distributed to two groups of respondents: people who have and people who have not utilized ER services. Meanwhile, the strategy was recommended through the Analytical Hierarchy Process of 17 expert respondents. According to the independent sample t-test performed with 95% confidence level, human knowledge of elephant conservation increased significantly through ER. Furthermore, experts with consistency ratios (CR) ≤ 0.1 selected a strategy where environmental quality was prioritized as a recommended strategy in ER management. This strategy is to put forward the principles guaranteeing the elephants’ welfare, which has a criterion weight of 0.40717. The other recommended strategies include conducting conservation education (0.23973), ensuring the safety of visitors (0.22972), and improving the welfare of the community around zoo (0.12338).","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47945820","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}
Pub Date : 2021-10-31DOI: 10.20886/ijfr.2021.8.2.135-157
T. Sukwika, Lidya Fransisca
Developing and maintaining forest sustainably is a way to support sustainable development. From the technical point of view, the sustainability of community forest could be articulated not only based on the three aspects i.e. economic (ECO), social culture (SOC), ecology (EGY), but it can also include dimensions of legal & institutional (LIT), and accessibility & technology (ACT). This study aims to determine variables of sustainability dimensions that have a direct positive effect on the sustainability of the community forests (SCF), to identify variables that affect SCF and variables of sustainability dimensions that have dominant effect on SCF. This study employed 70 samples of forest farmers’ group in Bogor regency. The respondents were purposively selected based on consideration of the criteria for forest farmer groups namely beginner, intermediate, and advanced. The Analysis tools used PLS-SEM. Sustainability dimensions of ECO, EGY, LIT, and ACT have a significant positive direct effect on SCF. The mediational hypothesis testing suggested that there is a partial mediation from ECO and EGY to SCF, which is consistent and have a positive value. Based on the coefficient value of the total-effect, among the five dimensions, ecology value was the biggest and the most robust. The policy implies that the ecological aspects considered the importance and strategy. Therefore, the value and productivity of the community forest structure and composition need to be maintained.
{"title":"THE POLICY MODEL FOR SUSTAINABLE COMMUNITY FOREST: A FACTOR ANALYSIS","authors":"T. Sukwika, Lidya Fransisca","doi":"10.20886/ijfr.2021.8.2.135-157","DOIUrl":"https://doi.org/10.20886/ijfr.2021.8.2.135-157","url":null,"abstract":"Developing and maintaining forest sustainably is a way to support sustainable development. From the technical point of view, the sustainability of community forest could be articulated not only based on the three aspects i.e. economic (ECO), social culture (SOC), ecology (EGY), but it can also include dimensions of legal & institutional (LIT), and accessibility & technology (ACT). This study aims to determine variables of sustainability dimensions that have a direct positive effect on the sustainability of the community forests (SCF), to identify variables that affect SCF and variables of sustainability dimensions that have dominant effect on SCF. This study employed 70 samples of forest farmers’ group in Bogor regency. The respondents were purposively selected based on consideration of the criteria for forest farmer groups namely beginner, intermediate, and advanced. The Analysis tools used PLS-SEM. Sustainability dimensions of ECO, EGY, LIT, and ACT have a significant positive direct effect on SCF. The mediational hypothesis testing suggested that there is a partial mediation from ECO and EGY to SCF, which is consistent and have a positive value. Based on the coefficient value of the total-effect, among the five dimensions, ecology value was the biggest and the most robust. The policy implies that the ecological aspects considered the importance and strategy. Therefore, the value and productivity of the community forest structure and composition need to be maintained.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42336139","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}
Pub Date : 2021-10-31DOI: 10.20886/ijfr.2021.8.2.199-211
T. Tiryana, L. Khasanah., P. Priyanto, S. Rahaju, M. Muhdin
Form factors and volume models are often be used in the estimation of tree volumes. However, a few studies have developed and evaluated the accuracy of form factors and volume models for estimating tree volumes of community forests. This study aimed to formulate form factors and volume models and assess their prediction accuracy for estimating tree bole volumes of mahogany at community forests in Central Java. This study used 120 sample trees with diameters of 6–38 cm to formulate artificial and absolute form factors and to develop tree bole volume models. These form factors coupled with bole height and total height were used in simple volume equations. Regression analyses were used to develop volume models using the diameter and total height as predictors. The simple volume equations and volume models' prediction accuracy was evaluated using a cross-validation dataset and independent dataset (30 sample trees). The artificial form factor (0.68 ± 0.11) of mahogany, which was higher than the absolute form factor (0.46 ± 0.09), provided accurate estimates of tree bole volumes when it was used with the bole height instead of the total height. The volume model that uses diameter and total height produced the most accurate estimates, while the volume model that uses diameter alone provided the most practical yet reliable tool for estimating tree bole volumes of mahogany. The results of this study are useful for improving community forest management.
{"title":"FORM FACTORS AND VOLUME MODELS FOR ESTIMATING TREE BOLE VOLUME OF MAHOGANY AT COMMUNITY FORESTS IN CENTRAL JAVA","authors":"T. Tiryana, L. Khasanah., P. Priyanto, S. Rahaju, M. Muhdin","doi":"10.20886/ijfr.2021.8.2.199-211","DOIUrl":"https://doi.org/10.20886/ijfr.2021.8.2.199-211","url":null,"abstract":"Form factors and volume models are often be used in the estimation of tree volumes. However, a few studies have developed and evaluated the accuracy of form factors and volume models for estimating tree volumes of community forests. This study aimed to formulate form factors and volume models and assess their prediction accuracy for estimating tree bole volumes of mahogany at community forests in Central Java. This study used 120 sample trees with diameters of 6–38 cm to formulate artificial and absolute form factors and to develop tree bole volume models. These form factors coupled with bole height and total height were used in simple volume equations. Regression analyses were used to develop volume models using the diameter and total height as predictors. The simple volume equations and volume models' prediction accuracy was evaluated using a cross-validation dataset and independent dataset (30 sample trees). The artificial form factor (0.68 ± 0.11) of mahogany, which was higher than the absolute form factor (0.46 ± 0.09), provided accurate estimates of tree bole volumes when it was used with the bole height instead of the total height. The volume model that uses diameter and total height produced the most accurate estimates, while the volume model that uses diameter alone provided the most practical yet reliable tool for estimating tree bole volumes of mahogany. The results of this study are useful for improving community forest management.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47560582","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}
Pub Date : 2021-10-31DOI: 10.20886/ijfr.2021.8.2.229-239
A. Hani
Malapari (Pongamia pinnata) is a potential plant for biodiesel and has the ability to grow on marginal land. Malapari cultivation has not yet been carried out due to low economic value. Agroforestry crop patterns are expected to provide intermediate results so that people would be interested in planting malapari. Planting on coastal land requires the right technology to produce optimal growth. This study aims to determine the effect of malapari cropping patterns and evaluate biological fertilizer application in the seedling phase after planting in the field. The research uses a split plot design (Split Plot Design) with the main factors that are the pattern of malapari planting and sub-plots that are the type of application of biofertilizer. The results obtained from the study showed that the interaction of cropping pattern treatment and biofertilizer application did not give significant growth to malapari; the combination of the application of organic manure, Trichoderma spp and mycorrhiza bio-fertilizers in the nursery yielded the largest malapari diameter growth after planting in the field at the age of 3 years.
{"title":"MALAPARI (Pongamia Pinnata (L.) Piere) GROWTH ON THREE PLANTING PATTERNS WITH TRICHODERMA AND MYCORRHIZAE SP APPLICATION","authors":"A. Hani","doi":"10.20886/ijfr.2021.8.2.229-239","DOIUrl":"https://doi.org/10.20886/ijfr.2021.8.2.229-239","url":null,"abstract":"Malapari (Pongamia pinnata) is a potential plant for biodiesel and has the ability to grow on marginal land. Malapari cultivation has not yet been carried out due to low economic value. Agroforestry crop patterns are expected to provide intermediate results so that people would be interested in planting malapari. Planting on coastal land requires the right technology to produce optimal growth. This study aims to determine the effect of malapari cropping patterns and evaluate biological fertilizer application in the seedling phase after planting in the field. The research uses a split plot design (Split Plot Design) with the main factors that are the pattern of malapari planting and sub-plots that are the type of application of biofertilizer. The results obtained from the study showed that the interaction of cropping pattern treatment and biofertilizer application did not give significant growth to malapari; the combination of the application of organic manure, Trichoderma spp and mycorrhiza bio-fertilizers in the nursery yielded the largest malapari diameter growth after planting in the field at the age of 3 years.","PeriodicalId":13482,"journal":{"name":"Indonesian Journal of Forestry Research","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43067301","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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