The aims of this study were to determine the effect of urbanization on species composition, change to stand structure and tree species on the mangrove stand between the housing development and the river. Two (2) plots were established, with five (5) subplots each measuring 10m x 10m. Simpson’s Index, Shannon-Weiner Index, Shannon evenness and Important Value Index (IVI) were used to determine the diversity and abundance of tree species. There are 4 species found in both plots which are Avicennia alba, Avicennia marina, Rhizophora mucronata and Rhizophora apiculata. The most abundant species is the R. apiculata with an IVI of 86.99 percent (%). The Simpson’s Index value calculated for the forest was 0.75, while the value for the Shannon-Weiner (H’) was 1.38. This indicates the area has low diversity in mangrove trees. The Shannon evenness (E) was 0.99. This means the area is completely covered in standing trees. In this study, the stand structure was measured using tree Diameter at Breast Height (DBH), height and crown size. The data indicates that mangrove trees approaching the housing developments experienced a steady decrease in DBH, height, and crown size. Trees in the middle of the forest had the largest DBH and height. The DBH and height of trees approaching the river steadily decreased but had larger crowns compared to the other subplots. Whereas, water quality and the presence of sediments were two other additional aspects used to measure the impact of housing developments on mangrove forests. Urbanization projects do not leave any noticeable impact on the clearness of water in mangrove forests, but does for sediments. As a conclusion, urbanization project such as housing development do leave an impact on mangrove forests in the Likas bay, Malaysia. More future studies will shed more light on how housing developments impact mangrove forests
本研究旨在探讨城市化对住宅开发与河流之间红树林物种组成、林分结构变化和树种的影响。建立了两(2)个地块，其中5(5)个子地块，每个地块的尺寸为10m x 10m。采用Simpson指数、Shannon- weiner指数、Shannon均匀度和重要价值指数(IVI)评价树种的多样性和丰度。在两个样地均发现4种，分别是白蜡蒿、滨海蜡蒿、长根蒿和尖根蒿。最丰富的物种是尖叶蝉，其IVI为86.99%(%)。森林的Simpson指数为0.75,Shannon-Weiner (H’)指数为1.38。这表明该地区红树林的多样性很低。Shannon均匀度(E)为0.99。这意味着该地区完全被直立的树木覆盖。在本研究中，林分结构采用胸径、树高和树冠大小进行测量。数据表明，接近住宅开发的红树林在胸径、高度和树冠大小上呈稳步下降趋势。森林中部树木胸径和高度最大。靠近河流的树木胸径和高度逐渐减小，但树冠比其他样地大。然而，水质和沉积物的存在是用来衡量住房开发对红树林影响的另外两个方面。城市化项目对红树林的水质没有明显的影响，但对沉积物有明显的影响。综上所述，住房开发等城市化项目确实对马来西亚利卡斯湾的红树林造成了影响。未来更多的研究将进一步阐明住房开发如何影响红树林
{"title":"The Effect of Urbanization on The Stand Structure of A Mangrove Forest in Likas Bay, Sabah Malaysia","authors":"A. R. Mojiol","doi":"10.36873/jht.v18i1.9699","DOIUrl":"https://doi.org/10.36873/jht.v18i1.9699","url":null,"abstract":"The aims of this study were to determine the effect of urbanization on species composition, change to stand structure and tree species on the mangrove stand between the housing development and the river. Two (2) plots were established, with five (5) subplots each measuring 10m x 10m. Simpson’s Index, Shannon-Weiner Index, Shannon evenness and Important Value Index (IVI) were used to determine the diversity and abundance of tree species. There are 4 species found in both plots which are Avicennia alba, Avicennia marina, Rhizophora mucronata and Rhizophora apiculata. The most abundant species is the R. apiculata with an IVI of 86.99 percent (%). The Simpson’s Index value calculated for the forest was 0.75, while the value for the Shannon-Weiner (H’) was 1.38. This indicates the area has low diversity in mangrove trees. The Shannon evenness (E) was 0.99. This means the area is completely covered in standing trees. In this study, the stand structure was measured using tree Diameter at Breast Height (DBH), height and crown size. The data indicates that mangrove trees approaching the housing developments experienced a steady decrease in DBH, height, and crown size. Trees in the middle of the forest had the largest DBH and height. The DBH and height of trees approaching the river steadily decreased but had larger crowns compared to the other subplots. Whereas, water quality and the presence of sediments were two other additional aspects used to measure the impact of housing developments on mangrove forests. Urbanization projects do not leave any noticeable impact on the clearness of water in mangrove forests, but does for sediments. As a conclusion, urbanization project such as housing development do leave an impact on mangrove forests in the Likas bay, Malaysia. More future studies will shed more light on how housing developments impact mangrove forests","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84287252","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 : 2023-06-29DOI: 10.36873/jht.v18i1.10056
Eva Oktoberyani Christy, Yosefin Ari Silvianingsih
Land clearing carried out in part or all of the ‘Rubber Garden’ area for settlement often leave stumps and branches that becomes food sources for termites and when the food sources is ran out, termites attack extends to the wooden structure of the house building and becomes a destructive pest. The aim of this research was to detect the presence of termites through signs of infestation on house building and yard located in the Gundaling ‘Rubber Garden’, Barito Timur Regency. Twenty house buildings were observed. Visual detection of termite infestation signs was conducted on house building and yard such as on wooden building components, fuel wood, stump, dead and living trees, and recording wooden building components damaged by termite infestation. Termites specimens were collected by directly capture termites from mud tubes and nests on the observed house buildings and yards. The results showed the presence of termites from the genus Nasutitermes on house buildings through signs of infestation in the form of mud tubes, carton nests, and damaged wooden building components. In the yard, the genus Nasutitermes was found through signs of infestation in the form of a mud tubes, arboreal carton nest, while the signs of termite infestation of genus Coptotermes was in the form of shelter tubes.
{"title":"Kehadiran Rayap dan Tanda-Tanda Infestasinya pada Bangunan Rumah Di Kawasan ‘Kebun Karet’ Gundaling, Tamiang Layang, Barito Timur, Kalimantan Tengah","authors":"Eva Oktoberyani Christy, Yosefin Ari Silvianingsih","doi":"10.36873/jht.v18i1.10056","DOIUrl":"https://doi.org/10.36873/jht.v18i1.10056","url":null,"abstract":"Land clearing carried out in part or all of the ‘Rubber Garden’ area for settlement often leave stumps and branches that becomes food sources for termites and when the food sources is ran out, termites attack extends to the wooden structure of the house building and becomes a destructive pest. The aim of this research was to detect the presence of termites through signs of infestation on house building and yard located in the Gundaling ‘Rubber Garden’, Barito Timur Regency. Twenty house buildings were observed. Visual detection of termite infestation signs was conducted on house building and yard such as on wooden building components, fuel wood, stump, dead and living trees, and recording wooden building components damaged by termite infestation. Termites specimens were collected by directly capture termites from mud tubes and nests on the observed house buildings and yards. The results showed the presence of termites from the genus Nasutitermes on house buildings through signs of infestation in the form of mud tubes, carton nests, and damaged wooden building components. In the yard, the genus Nasutitermes was found through signs of infestation in the form of a mud tubes, arboreal carton nest, while the signs of termite infestation of genus Coptotermes was in the form of shelter tubes.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80499652","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}
Potensi dan cadangan energi seperti minyak bumi, dan gas alam yang tersedia di perut bumi menipis, maka perlu energi alternatif. Briket arang merupakan salah satu energi non migas yang mempunyai potensi yang cukup tinggi guna memenuhi kebutuhan dalam jangka waktu yang akan datang selain minyak dan gas bumi. Penggergajian kayu pada industri mebel menghasilkan limbah serbuk kayu sungkai (Peronema canesens) dan kayu ulin (Eusyderoxylon zwageri) yang bisa dimanfaatkan sebagai bahan baku pembuatan briket arang. Tujuan penelitian ini mengetahui kualitas briket arang yang dihasilkan dari komposisi limbah serbuk kayu sungkai dan serbuk kayu ulin. Hasil pengujian rata-rata sifat fisika, kimia dan mekanika setiap perlakuan pengujian memenuhi SNI (01-62365-2000) kecuali kerapatan dan zat mudah menguap. Kualitas briket arang terbaik ditemukan pada perlakuan K1 (Sungkai 0% dan Ulin 100%) dengan kerapatan sebesar 0,57 (g/cm3), keteguhan tekan 65,76 kg/cm2, kadar air 4,08%, kadar zat mudah menguap 29,76%, kadar abu 1,20%, kadar karbon terikat 62,77% dan nilai kalor 6869,71 kal/g
{"title":"Karakteristik Briket Arang dengan Komposisi Serbuk Kayu Sungkai (Peronema canescens) dan Kayu Ulin (Eusideroxylon zwageri)","authors":"Wahyu Supriyati, Enti Rimma Silalahi, Nuwa Nuwa, Alpian Alpian","doi":"10.36873/jht.v18i1.9398","DOIUrl":"https://doi.org/10.36873/jht.v18i1.9398","url":null,"abstract":"Potensi dan cadangan energi seperti minyak bumi, dan gas alam yang tersedia di perut bumi menipis, maka perlu energi alternatif. Briket arang merupakan salah satu energi non migas yang mempunyai potensi yang cukup tinggi guna memenuhi kebutuhan dalam jangka waktu yang akan datang selain minyak dan gas bumi. Penggergajian kayu pada industri mebel menghasilkan limbah serbuk kayu sungkai (Peronema canesens) dan kayu ulin (Eusyderoxylon zwageri) yang bisa dimanfaatkan sebagai bahan baku pembuatan briket arang. Tujuan penelitian ini mengetahui kualitas briket arang yang dihasilkan dari komposisi limbah serbuk kayu sungkai dan serbuk kayu ulin. Hasil pengujian rata-rata sifat fisika, kimia dan mekanika setiap perlakuan pengujian memenuhi SNI (01-62365-2000) kecuali kerapatan dan zat mudah menguap. Kualitas briket arang terbaik ditemukan pada perlakuan K1 (Sungkai 0% dan Ulin 100%) dengan kerapatan sebesar 0,57 (g/cm3), keteguhan tekan 65,76 kg/cm2, kadar air 4,08%, kadar zat mudah menguap 29,76%, kadar abu 1,20%, kadar karbon terikat 62,77% dan nilai kalor 6869,71 kal/g","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79379396","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}
Pantung tree (Dyera lowii) is a critically endangered species that grows in peat swamps. Pantung cultivation is not only for commercial purposes but also for species conservation, reforestation and rehabilitation of degraded peat swamp land. One of the benefits of the pantung plant is to use its sap as a material for making pencil erasers, rubber toys and others. This study aims to determine the tapping time of pantung plant sap based on its growth rate. Based on the results of this study, the growth in diameter and height of pantung plants can be described through polynomial equations, i.e: y = -3.825941 + 4.1244995x + (-0.140316)x2 and y = 3.562047 + 0.212857x + 0.72187x2 respectively: The time for tapping pantung plant sap in peat swamp land is when the plant has reached a diameter of 20 cm or has reached a height of 12 meters. Based on the polynomial equation, the tapping time for pantung plant sap is 8 years old, when the pantung plant reaches a diameter of 20.42 cm; or at the age of 10 years, when the plant reaches a height of 12.91 meters
{"title":"Penentuan Waktu Sadap Getah Pantung (Dyera lowii) di Lahan Rawa Gambut","authors":"W. Wahyudi, Antonius Triyadi, Nursiah Nursiah","doi":"10.36873/jht.v18i1.9700","DOIUrl":"https://doi.org/10.36873/jht.v18i1.9700","url":null,"abstract":"Pantung tree (Dyera lowii) is a critically endangered species that grows in peat swamps. Pantung cultivation is not only for commercial purposes but also for species conservation, reforestation and rehabilitation of degraded peat swamp land. One of the benefits of the pantung plant is to use its sap as a material for making pencil erasers, rubber toys and others. This study aims to determine the tapping time of pantung plant sap based on its growth rate. Based on the results of this study, the growth in diameter and height of pantung plants can be described through polynomial equations, i.e: y = -3.825941 + 4.1244995x + (-0.140316)x2 and \u0000y = 3.562047 + 0.212857x + 0.72187x2 respectively: The time for tapping pantung plant sap in peat swamp land is when the plant has reached a diameter of 20 cm or has reached a height of 12 meters. Based on the polynomial equation, the tapping time for pantung plant sap is 8 years old, when the pantung plant reaches a diameter of 20.42 cm; or at the age of 10 years, when the plant reaches a height of 12.91 meters","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84192207","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}
Penelitian ini menggabungkan tanah gambut dan arang sekam padi yang telah direndam menggunakan pupuk organik cair hasil fermentasi rumput dan telur sebagai media tanam untuk mengurangi keasaman tanah gambut sehingga meningkatkan sifat fisik tanah dan mengurangi penggunaan pupuk anorganik sambil tetap menjaga produktivitas tanaman. Tujuan dari penelitian ini adalah menganalisis pertumbuhan tunas Balangeran (Shorea balangeran) dalam kombinasi dengan media tanam gambut dan arang sekam yang telah diperkaya dengan pupuk organik cair hasil fermentasi rumput dan telur pada dosis dan jenis perlakuan yang berbeda. Penelitian ini menggunakan metode perancangan acak kelompok (RBD) dengan empat perlakuan yang terdiri dari tiga kelompok dan setiap kelompok terdiri dari 10 bibit S. balangeran atau 120 bibit. Hasil pengamatan pada parameter tinggi tanaman menunjukkan bahwa perlakuan P1 (arang sekam + fermentasi telur 10%) menunjukkan tinggi tanaman terbaik dengan nilai rata-rata 7,47 cm, perlakuan P3 (arang sekam + fermentasi telur 5% + fermentasi rumput 5%) menunjukkan diameter batang terbaik dengan nilai rata-rata 1,66 mm, perlakuan P1 (arang sekam + fermentasi telur 10%) menunjukkan jumlah daun terbaik dengan nilai rata-rata 3,23 daun.
{"title":"Pengayaan Arang Sekam Menggunakan Fermentasi Pupuk Organik Cair pada Pertumbuhan Balangeran (Shorea balangeran (Kroth.))","authors":"Reni Rahmawati, Chartina Pidjath, Raudah Raudah","doi":"10.36873/jht.v18i1.9392","DOIUrl":"https://doi.org/10.36873/jht.v18i1.9392","url":null,"abstract":"Penelitian ini menggabungkan tanah gambut dan arang sekam padi yang telah direndam menggunakan pupuk organik cair hasil fermentasi rumput dan telur sebagai media tanam untuk mengurangi keasaman tanah gambut sehingga meningkatkan sifat fisik tanah dan mengurangi penggunaan pupuk anorganik sambil tetap menjaga produktivitas tanaman. Tujuan dari penelitian ini adalah menganalisis pertumbuhan tunas Balangeran (Shorea balangeran) dalam kombinasi dengan media tanam gambut dan arang sekam yang telah diperkaya dengan pupuk organik cair hasil fermentasi rumput dan telur pada dosis dan jenis perlakuan yang berbeda. Penelitian ini menggunakan metode perancangan acak kelompok (RBD) dengan empat perlakuan yang terdiri dari tiga kelompok dan setiap kelompok terdiri dari 10 bibit S. balangeran atau 120 bibit. Hasil pengamatan pada parameter tinggi tanaman menunjukkan bahwa perlakuan P1 (arang sekam + fermentasi telur 10%) menunjukkan tinggi tanaman terbaik dengan nilai rata-rata 7,47 cm, perlakuan P3 (arang sekam + fermentasi telur 5% + fermentasi rumput 5%) menunjukkan diameter batang terbaik dengan nilai rata-rata 1,66 mm, perlakuan P1 (arang sekam + fermentasi telur 10%) menunjukkan jumlah daun terbaik dengan nilai rata-rata 3,23 daun.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87561306","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 : 2023-06-29DOI: 10.36873/jht.v18i1.10000
I.Y. Hutahean, P. Putir, J. M. Rotinsulu, Penyang Penyang, Setiarno Setiarno
Decomposition of organic matter in the soil is closely related to the presence of soil macrofauna. The better the process of organic matter decomposition, the better the physical and chemical properties of the soil, which, of course, will support soil fertility in a land area. This research aims to determine the presence of soil macrofauna under Jelutung Rawa trees (Dyera polyphylla Miq) in the peatland of the Seedling Garden (KBS) at Palangka Raya University. The research method was conducted by sampling soil macrofauna through Hand sorting method at 25 observation points and Pittfall Trap method at 20 observation points. The observed and identified soil macrofauna were examined in the laboratory using identification guidelines and literature on macrofauna types. The data were analyzed using the Shannon-Wiener species diversity index formula, the Margalef species richness index, the Pielou evenness index, and the calculation of species presence frequency. The research findings revealed 24 species, 23 genera, 20 families, 7 classes, and 3 phyla of soil macrofauna, with a total of 3,579 individuals. The values of the species diversity index (H'), species richness index (Dmg), evenness index (E), and the frequency of soil macrofauna presence (F) at KBS, Palangka Raya University were as follows: H' = 2.303325269 (moderate category), Dmg = 2.810760521 (moderate category), E = 0.724759677 (fairly even category), and frequency of presence, F = 80% - 100%.
{"title":"Makrofauna Tanah di Bawah Pohon Jelutung Rawa (Dyera polyphylla Miq) Di Kebun Benih Semai (KBS) Universitas Palangka Raya","authors":"I.Y. Hutahean, P. Putir, J. M. Rotinsulu, Penyang Penyang, Setiarno Setiarno","doi":"10.36873/jht.v18i1.10000","DOIUrl":"https://doi.org/10.36873/jht.v18i1.10000","url":null,"abstract":"Decomposition of organic matter in the soil is closely related to the presence of soil macrofauna. The better the process of organic matter decomposition, the better the physical and chemical properties of the soil, which, of course, will support soil fertility in a land area. This research aims to determine the presence of soil macrofauna under Jelutung Rawa trees (Dyera polyphylla Miq) in the peatland of the Seedling Garden (KBS) at Palangka Raya University. The research method was conducted by sampling soil macrofauna through Hand sorting method at 25 observation points and Pittfall Trap method at 20 observation points. The observed and identified soil macrofauna were examined in the laboratory using identification guidelines and literature on macrofauna types. The data were analyzed using the Shannon-Wiener species diversity index formula, the Margalef species richness index, the Pielou evenness index, and the calculation of species presence frequency. The research findings revealed 24 species, 23 genera, 20 families, 7 classes, and 3 phyla of soil macrofauna, with a total of 3,579 individuals. The values of the species diversity index (H'), species richness index (Dmg), evenness index (E), and the frequency of soil macrofauna presence (F) at KBS, Palangka Raya University were as follows: H' = 2.303325269 (moderate category), Dmg = 2.810760521 (moderate category), E = 0.724759677 (fairly even category), and frequency of presence, F = 80% - 100%.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81975871","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}
Johanna Maria Rotinsulu, Reni Rahmawati, Nuwa Nuwa
Good germination of rattan jernang (Daemonorops draco Blume) seeds will increase germination power, germination rate, and germination value. However, there are still obstacles to germination, because the jernang rattan seeds have a dormancy period. Soaking in Atonic Growth Regulatory Substances (ZPT) is one method that can be used to break thedormancy period of seeds. This study aims to determine the dose and soaking time on the germination value of jernang rattan seeds (D. draco Blume). The study used four treatments and 3 groups/replications. The treatment in this study was the dose of ZPT Atonik, namely 50 CC/Liter, 80 CC/liter, 120 CC/liter, 150 CC/liter. Grouped by immersion time, 24 hours, 48 hours and 72 hours. The results showed that the best germination percentage of German rattan (D.draco Blume) seeds were treated with ZPT Atonik dose of 120 cc/liter and soaked for 48 hours with a percentage of 100%. The best seed germination rate was at 150CC/liter treatment and 24 hours of soaking time, which was 50%/day. The highest germination value was found in seeds treated with ZPT 120CC/liter and soaking for 48 hours with an average of 0.0036%/ day. The conclusion of this study is that the ZPT Atonik dose of 120 CC/liter and 48 hours of soaking time has an effect on the percentage of germination power and germination value, while the ZPT dose of 150 CC/liter with 24 hours of soaking time increases the germination rate
{"title":"Daya Kecambah Benih Rotan Jernang (Daemonorops draco Blume) dengan Perlakuan Perendaman Zat Pengatur Tumbuh Atonik","authors":"Johanna Maria Rotinsulu, Reni Rahmawati, Nuwa Nuwa","doi":"10.36873/jht.v18i1.9744","DOIUrl":"https://doi.org/10.36873/jht.v18i1.9744","url":null,"abstract":"Good germination of rattan jernang (Daemonorops draco Blume) seeds will increase germination power, germination rate, and germination value. However, there are still obstacles to germination, because the jernang rattan seeds have a dormancy period. Soaking in Atonic Growth Regulatory Substances (ZPT) is one method that can be used to break thedormancy period of seeds. This study aims to determine the dose and soaking time on the germination value of jernang rattan seeds (D. draco Blume). The study used four treatments and 3 groups/replications. The treatment in this study was the dose of ZPT Atonik, namely 50 CC/Liter, 80 CC/liter, 120 CC/liter, 150 CC/liter. Grouped by immersion time, 24 hours, 48 hours and 72 hours. The results showed that the best germination percentage of German rattan (D.draco Blume) seeds were treated with ZPT Atonik dose of 120 cc/liter and soaked for 48 hours with a percentage of 100%. The best seed germination rate was at 150CC/liter treatment and 24 hours of soaking time, which was 50%/day. The highest germination value was found in seeds treated with ZPT 120CC/liter and soaking for 48 hours with an average of 0.0036%/ day. The conclusion of this study is that the ZPT Atonik dose of 120 CC/liter and 48 hours of soaking time has an effect on the percentage of germination power and germination value, while the ZPT dose of 150 CC/liter with 24 hours of soaking time increases the germination rate","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82224229","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}
Setiarno Setiarno, Amelia Noviyanti, Ajun Junaedi, Wahyu Supriyati, R. Rosdiana
Struktur komunitas tumbuhan di suatu lokasi memiliki hubungan dengan karakteristik kimia tanahnya. Penelitian ini dilakukan di daerah kebun sengon dan karet di wilayah administratif Desa Gohong, Kecamatan Pulang Pisau. Penelitian ini bertujuan untuk menggambarkan dan menganalisis struktur komunitas tumbuhan serta karakteristik kimia tanah di lokasi kebun sengon dan karet di Desa Gohong, Kecamatan Pulang Pisau. Data vegetasi dikumpulkan menggunakan metode plot berstrata pada 9 plot yang ditempatkan di setiap kebun, sedangkan sampel tanah untuk analisis kimia tanah merupakan campuran komposit dari 9 titik bor dari setiap lokasi pada dua kedalaman, yaitu 0-30 cm dan 31-49 cm. Tumbuhan yang ditemukan di lokasi penelitian sebanyak 15 spesies yang tergolong dalam 12 famili, di kebun sengon terdapat 10 spesies sedangkan di kebun karet terdapat 6 spesies. Spesies tumbuhan dengan INP tertinggi di kebun sengon adalah sengon dan galam, sedangkan di kebun karet adalah karet. Nilai ID berkisar antara 0,2-1,0. Kedalaman gambut di lokasi penelitian diukur kurang dari 50 cm dengan karakteristik kimia C-kandungan organik <5%, yaitu rendah dengan rentang 4,89-6,98%, dan keasaman tanah sangat asam (pH <4,5) dengan rentang nilai pH 3,59-3,80 dan kejenuhan basa (Basa Saturation, BS) sangat rendah dengan rentang nilai 1,89-3,27%. Kandungan N-total tanah bervariasi dari rendah hingga sedang dengan rentang nilai 0,14-0,41%. Ketersediaan P sangat rendah dengan nilai bersamaan 1,18-1,41 ppm, dan 0,98, dan 1,19 ppm; nilai K-dd, Ca-dd, Mg-dd, dan Na-dd semuanya dangkal dengan rentang 0,03-0,05 cmol(+).kg-1, dan 0,07-0,10 cmol(+).kg-1, kemudian Ca adalah 0,83-1,44 cmol(+).kg-1; kemudian Mg memiliki nilai yang sama yaitu 0,10 cmol(+).kg-1, dan Na adalah 0,05-0,11 cmol(+).kg-1, sedangkan KTK sangat tinggi dengan nilai 49,38-60,05 cmol(+).kg-1.
{"title":"Komposisi Jenis Vegetasi dan Karakteristik Kimia Tanah pada Tapak Tegakan Sengon dan Karet di Desa Gohong, Kabupaten Pulang Pisau","authors":"Setiarno Setiarno, Amelia Noviyanti, Ajun Junaedi, Wahyu Supriyati, R. Rosdiana","doi":"10.36873/jht.v18i1.8750","DOIUrl":"https://doi.org/10.36873/jht.v18i1.8750","url":null,"abstract":"Struktur komunitas tumbuhan di suatu lokasi memiliki hubungan dengan karakteristik kimia tanahnya. Penelitian ini dilakukan di daerah kebun sengon dan karet di wilayah administratif Desa Gohong, Kecamatan Pulang Pisau. Penelitian ini bertujuan untuk menggambarkan dan menganalisis struktur komunitas tumbuhan serta karakteristik kimia tanah di lokasi kebun sengon dan karet di Desa Gohong, Kecamatan Pulang Pisau. Data vegetasi dikumpulkan menggunakan metode plot berstrata pada 9 plot yang ditempatkan di setiap kebun, sedangkan sampel tanah untuk analisis kimia tanah merupakan campuran komposit dari 9 titik bor dari setiap lokasi pada dua kedalaman, yaitu 0-30 cm dan 31-49 cm. Tumbuhan yang ditemukan di lokasi penelitian sebanyak 15 spesies yang tergolong dalam 12 famili, di kebun sengon terdapat 10 spesies sedangkan di kebun karet terdapat 6 spesies. Spesies tumbuhan dengan INP tertinggi di kebun sengon adalah sengon dan galam, sedangkan di kebun karet adalah karet. Nilai ID berkisar antara 0,2-1,0. Kedalaman gambut di lokasi penelitian diukur kurang dari 50 cm dengan karakteristik kimia C-kandungan organik <5%, yaitu rendah dengan rentang 4,89-6,98%, dan keasaman tanah sangat asam (pH <4,5) dengan rentang nilai pH 3,59-3,80 dan kejenuhan basa (Basa Saturation, BS) sangat rendah dengan rentang nilai 1,89-3,27%. Kandungan N-total tanah bervariasi dari rendah hingga sedang dengan rentang nilai 0,14-0,41%. Ketersediaan P sangat rendah dengan nilai bersamaan 1,18-1,41 ppm, dan 0,98, dan 1,19 ppm; nilai K-dd, Ca-dd, Mg-dd, dan Na-dd semuanya dangkal dengan rentang 0,03-0,05 cmol(+).kg-1, dan 0,07-0,10 cmol(+).kg-1, kemudian Ca adalah 0,83-1,44 cmol(+).kg-1; kemudian Mg memiliki nilai yang sama yaitu 0,10 cmol(+).kg-1, dan Na adalah 0,05-0,11 cmol(+).kg-1, sedangkan KTK sangat tinggi dengan nilai 49,38-60,05 cmol(+).kg-1.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76885205","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}
Bambu yang memiliki potensi untuk dikembangkan sebagai papan laminasi adalah bambu petung. Bambu petung dapat dibuat papan laminasi karena memiliki dinding batang tebal (10 mm - 30 mm), dinding batang yang tebal akan menghemat penggunaan perekat. Syarat pembuatan papan laminasi bambu yaitu berbatang lurus, usia 3 sampai 5 tahun dan tidak terserang hama penyakit. Untuk kelayakan penggunaan bambu petung sebagai papan laminasi perlu dilakukan pengujian sifat fisika dan mekanika papan laminasi bambu petung. Sifat fisika dibutuhkan untuk mengetahui kestabilan dimensi papan yang dihasilkan dan sifat mekanika dibutuhkan untuk mengetahui kemampuan papan dalam menahan beban. Pada penelitian akan melihat kekuatan sifat fisika dan mekanika papan laminasi berdasakan susunan bilah kearah lebar dan pengaruh berat labur terhadap sifat fisika dan mekanika papan laminasi bambu petung. Metode penelitian yang digunakan dalam penelitian ini menggunakan metode eksperimen dengan rancangan percobaan Rancangan Acak Lengkap (RAL) non factorial dengan dua perlakuan (berat labur). Penelitian papan laminasi dengan susunan bilah kearah lebar menghasilkan nilai sifat fisika dan mekanika sebagai berikut: kadar air : 13,746%, kerapatan : 0,418 gram/cm3, pengembangan tebal : 2,325%, MoE : 15120,226 kgf/cm2 dan MoR : 354,943 kgf/cm2. Semua pengujian sifat fisika dan mekanika tidak berpengaruh nyata terhadap berat labur perekat kecuali pada pengujian penyusutan tebal. Berdasarkan nilai kelas kuat papan laminasi maka papan laminasi bambu petung dengan susunan kearah lebar masuk dalam kelas kuat III yang dapat dimanfaatkan sebagai bahan bangunan seperti rangka pintu, jendela, panel, perabot rumah tangga dan industri kayu.
{"title":"Sifat Fisika dan Mekanika Papan Laminasi Bambu Petung (Dendrocalamus Asper) dengan Susunan Bilah Ke Arah Lebar","authors":"F. Wulandari, Habibi, Radjali Amin","doi":"10.36873/jht.v18i1.9027","DOIUrl":"https://doi.org/10.36873/jht.v18i1.9027","url":null,"abstract":"Bambu yang memiliki potensi untuk dikembangkan sebagai papan laminasi adalah bambu petung. Bambu petung dapat dibuat papan laminasi karena memiliki dinding batang tebal (10 mm - 30 mm), dinding batang yang tebal akan menghemat penggunaan perekat. Syarat pembuatan papan laminasi bambu yaitu berbatang lurus, usia 3 sampai 5 tahun dan tidak terserang hama penyakit. Untuk kelayakan penggunaan bambu petung sebagai papan laminasi perlu dilakukan pengujian sifat fisika dan mekanika papan laminasi bambu petung. Sifat fisika dibutuhkan untuk mengetahui kestabilan dimensi papan yang dihasilkan dan sifat mekanika dibutuhkan untuk mengetahui kemampuan papan dalam menahan beban. Pada penelitian akan melihat kekuatan sifat fisika dan mekanika papan laminasi berdasakan susunan bilah kearah lebar dan pengaruh berat labur terhadap sifat fisika dan mekanika papan laminasi bambu petung. Metode penelitian yang digunakan dalam penelitian ini menggunakan metode eksperimen dengan rancangan percobaan Rancangan Acak Lengkap (RAL) non factorial dengan dua perlakuan (berat labur). Penelitian papan laminasi dengan susunan bilah kearah lebar menghasilkan nilai sifat fisika dan mekanika sebagai berikut: kadar air : 13,746%, kerapatan : 0,418 gram/cm3, pengembangan tebal : 2,325%, MoE : 15120,226 kgf/cm2 dan MoR : 354,943 kgf/cm2. Semua pengujian sifat fisika dan mekanika tidak berpengaruh nyata terhadap berat labur perekat kecuali pada pengujian penyusutan tebal. Berdasarkan nilai kelas kuat papan laminasi maka papan laminasi bambu petung dengan susunan kearah lebar masuk dalam kelas kuat III yang dapat dimanfaatkan sebagai bahan bangunan seperti rangka pintu, jendela, panel, perabot rumah tangga dan industri kayu.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82325301","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}
Raden Mas Sukarna, Antonius Triyadi, Hari Prakasa, N. Hidayat, Alpian Alpian
Perubahan tutupan lahan sulit untuk ditinjau karena daerah-daerah besar di mana laju perubahan tidak dapat dikendalikan. Perubahan tersebut perlu dipelajari untuk memperoleh informasi kondisi hutan. Tujuan dari penelitian ini adalah menganalisis perubahan tutupan lahan dari tahun 2015 hingga 2019 menggunakan citra Landsat 8 OLI-TIRS, termasuk untuk mengetahui keragaman vegetasi di Kecamatan Kapuas Tengah, Provinsi Kalimantan Tengah. Hasil penelitian menunjukkan bahwa selama periode tersebut terjadi degradasi hutan yang padat menjadi semak sekitar 7.857,061 ha, dan reboisasi hutan sedang menjadi hutan yang padat sebesar 7.220,401 ha. Peningkatan tutupan lahan juga terjadi dari area terbuka menjadi hutan sekitar 277,248 ha melalui perkebunan kelapa sawit. Tingkat akurasi klasifikasi tutupan lahan masih belum maksimal. Hasil analisis vegetasi juga menunjukkan bahwa pada setiap tingkat pertumbuhan hutan terdapat variasi spesies, yang didominasi oleh meranti merah (Shorea johorensis Foxw), ketumbu putih, kalapapa, dan sampahiring (Cyperus Sp.). Indeks keragaman dan indeks kekayaan spesies dikategorikan rendah hingga sedang. Sementara itu, indeks keseragaman spesies berada dalam kategori tinggi dengan nilai indeks 1.
{"title":"Pemantauan Keragaman Hutan Menggunakan Landsat 8 OLI-TIRS di Provinsi Kalimantan Tengah","authors":"Raden Mas Sukarna, Antonius Triyadi, Hari Prakasa, N. Hidayat, Alpian Alpian","doi":"10.36873/jht.v18i1.8662","DOIUrl":"https://doi.org/10.36873/jht.v18i1.8662","url":null,"abstract":"Perubahan tutupan lahan sulit untuk ditinjau karena daerah-daerah besar di mana laju perubahan tidak dapat dikendalikan. Perubahan tersebut perlu dipelajari untuk memperoleh informasi kondisi hutan. Tujuan dari penelitian ini adalah menganalisis perubahan tutupan lahan dari tahun 2015 hingga 2019 menggunakan citra Landsat 8 OLI-TIRS, termasuk untuk mengetahui keragaman vegetasi di Kecamatan Kapuas Tengah, Provinsi Kalimantan Tengah. Hasil penelitian menunjukkan bahwa selama periode tersebut terjadi degradasi hutan yang padat menjadi semak sekitar 7.857,061 ha, dan reboisasi hutan sedang menjadi hutan yang padat sebesar 7.220,401 ha. Peningkatan tutupan lahan juga terjadi dari area terbuka menjadi hutan sekitar 277,248 ha melalui perkebunan kelapa sawit. Tingkat akurasi klasifikasi tutupan lahan masih belum maksimal. Hasil analisis vegetasi juga menunjukkan bahwa pada setiap tingkat pertumbuhan hutan terdapat variasi spesies, yang didominasi oleh meranti merah (Shorea johorensis Foxw), ketumbu putih, kalapapa, dan sampahiring (Cyperus Sp.). Indeks keragaman dan indeks kekayaan spesies dikategorikan rendah hingga sedang. Sementara itu, indeks keseragaman spesies berada dalam kategori tinggi dengan nilai indeks 1.","PeriodicalId":42714,"journal":{"name":"Jurnal Manajemen Hutan Tropika","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90543002","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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