Jurnal Ilmu Kehutanan最新文献

{"title":"Autecology of Begonia in Several Locations of Flores Island","authors":"S. Sutomo, R. Iryadi","doi":"10.22146/JIK.V15I1.1517","DOIUrl":"https://doi.org/10.22146/JIK.V15I1.1517","url":null,"abstract":"Human activities in forest areas such as over-harvesting of Begonia species without being balanced with their cultivation activities can threaten the existence of Begonia in nature. Autecological studies of species in their natural habitat are the initial activities for the conservation of plant species. The purpose of this study was to study the distribution of Begonia on Flores and environmental/ microclimate characteristics in several locations on Flores Island. The 10x10 m plots were placed with purposive sampling with a minimum interval of 50 m. Multivariate analysis using Canonical Corespondence Analysis (CCA) was employed to determine the effect of microclimatic factors on the composition of vegetation. Begonia kelimutensis is endemic in Kelimutu National Park, Flores lives at an altitude of 1,527 asl, at soil pH 5,8 and soil moisture of 75%, with a slope of 10 ° on the forest floor and light intensity 4,640 klux. In addition, five types of Begonia that we estimate have not been identified and two of them are identified as Begonia sumbawaensis Girm. and Begonia brangbosangensis Girm. Begonia kelimutuensis is distributed at a higher altitude than Begonia brangbosangensis. B. sumbawaensis is influenced by the slope factor while B. longifolia tends to be related to the air humidity factor. B. kelimutuensis is also often found living with Macaranga sp., and Litsea sp. B. brangbosangensis, also found near Homalanthus sp. and Calliandra callothyrsus.","PeriodicalId":31295,"journal":{"name":"Jurnal Ilmu Kehutanan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46945222","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}

{"title":"An Evaluation of The Antifungal and Antioxidant Activity of Pinus merkusii Bark Ethyl Acetate Extract","authors":"Masendra Masendra, B. A. V. Purba, G. Lukmandaru","doi":"10.22146/JIK.V15I1.1494","DOIUrl":"https://doi.org/10.22146/JIK.V15I1.1494","url":null,"abstract":"Pinus merkusii is the only species in the Pinaceae family to grow in Southeast Asia, including Indonesia, and serves as a source of wood and oleoresins. During the utilization of this pine, the bark is discarded as residue, however, this residue is possibly a potential source of antifungal and antioxidant agents, due to the polyphenol contents. This study, therefore, aims to investigate the antifungal and antioxidant compounds present in the bark of P. merkusii. The ethyl acetate extracts of Pinus merkusii were fractionated to obtain five fractions (Fr. A- Fr. E) and the bioactivity of each fraction was observed. Subsequently, the growth inhibition against Phanerochaete chrysosporium, was evaluated for antifungal activity, while DPPH (1,1-diphenyl-2-picrylhydrazyl) method was used to ascertain antioxidant activity. According to the GC-MS analysis, the ethyl acetate fractions contain triterpenoids and steroids as the dominant compounds as well as minor amounts of mono-sesquiterpenoids and hydrocarbons. The highest growth inhibition exhibited by Fr. C- Fr. E (>60%) indicates triterpenoids and steroids act as a fungal inhibitors. Meanwhile, the five fractions exhibited low antioxidant activity because the steroids and triterpenoids present are possibly ineffective DPPH inhibitors. Also, the antifungal and antioxidant activity R2 values were discovered to correlate 0.3, indicating a low positive correlation.","PeriodicalId":31295,"journal":{"name":"Jurnal Ilmu Kehutanan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45215425","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}

{"title":"Tingkat Erosi pada Plot Model Arsitektur Pohon Attims (Eucalyptus deglupta), Corner (Arenga pinnata), dan Rauh (Arthocarpus teysmanii)","authors":"Naharuddin Naharuddin","doi":"10.22146/JIK.V15I1.1510","DOIUrl":"https://doi.org/10.22146/JIK.V15I1.1510","url":null,"abstract":"Tree architecture models and the composition of vegetation types affected surface runoff and erosion rates due to vegetation density and various other morphological and ecological characteristic components. This research purpose was to measure and compare the level of erosion in 3 tree architectural models. The research used the  path plots method.  The sample pathway was made by cut off contour lines. To measure the erosion rate that occured at the tree architecture model, erosion measuring plots were used in three tree architecture models, namely Attims (Eucalyptus deglupta), Corner (Arenga pinnata), and Rauh (Arthocarpus teysmanii). The results showed that the dominant tree architecture model was the Rauh, Attims, and Corner models. The erosion level which occurred in the three tree architectural models showed that the Attims Eucalyptus deglupta model and Corner Arenga pinnata models were more effective in controlling erosion by 233.55 g/ha/year and 293.10 g/ha/year with rainfall of 493.55 mm compared to Rauh Arthocarpus teysmanii type. The correlation analysis  between rainfall and the erosion rate at the three tree architecture models were 80% (very strong) for Attims model, 89% (very strong) for Corner model and 90% (very strong) for Rauh model. To control the erosion the Attims and Corner models are highly recommended as alternatives for rehabilitating the critical land.","PeriodicalId":31295,"journal":{"name":"Jurnal Ilmu Kehutanan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42630074","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}

{"title":"Perbandingan Finansial Usaha Budidaya Bambu dan Sengon","authors":"H. Prasetyo, Dodi Ridho Nurrochmat, Leti Sundawati","doi":"10.22146/JIK.V15I1.1502","DOIUrl":"https://doi.org/10.22146/JIK.V15I1.1502","url":null,"abstract":"Bamboo is proven to provide multi-benefits from the aspects of production, ecology and socio-economic. However, bamboo is still not fully developed. People tend to replace bamboo with wood species which are considered to be more profitable, one of them is sengon. The purpose of this study was to analyze bamboo management practices carried out by farmers and compare between sengon and bamboo cultivation which is more financially profitable. Financial analysis conducted includes: Net Present Value (NPV), Benefit Cost Ratio (BCR) and Internal Rate of Return (IRR). Analysis of market aspect and social aspect using the Market Analysis and Development (MA&D) method. The sensitivity analysis is carried out on the condition of fixed income while costs increase by 10% and 30% and fixed costs while income rises by 10% and 30%. The analysis included the analysis of market aspect and social aspect. The results of the financial analysis showed that the cultivation of petung bamboo with a spacing of 6x6 meters gave the highest yield with NPV value of IDR330.329.538, BCR 29.10 and IRR of 25.18%. Nevertheless; looking at market and social aspects, bamboo and sengon can be developed in agroforestry to ensure sustainability and continuity of income for farmers. Bamboo and sengon cultivation business is feasible to be conducted because the high demand which cannot be met from the existing sources.","PeriodicalId":31295,"journal":{"name":"Jurnal Ilmu Kehutanan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47893123","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}

{"title":"Penilaian Wisatawan Terhadap Komponen Destinasi Wisata: Atraksi, Amenitas, Aksesibilitas dan Pelayanan Tambahan Pada Objek Wisata Kebun Raya Liwa","authors":"M. K. Tsani, S. Harianto, Trio Santoso, Niskan Walid Masruri, Gunardi Djoko Winarno","doi":"10.22146/JIK.V15I1.1515","DOIUrl":"https://doi.org/10.22146/JIK.V15I1.1515","url":null,"abstract":"The development of a tourist attraction must pay attention to the tourists’necessity. To fulfill these needs there are 4 main components that must be fulfilled. This study aims to determine the assessment of tourists to the 4 main components (attraction, amenities, accessibility, and ancillary service) on the natural attractions of the Liwa Botanical Garden. This research was carried out in the Liwa Botanical Garden located in Kubu Perahu Village, Balik Bukit District, Liwa City, West Lampung Regency. Data was collected for 100 tourists by accidental sampling. Data analysis using a likert scale and data scoring. The results showed that of the 4 components of tourist destinations in the KRL object, only the attraction component had adequate value. The three other components (accessibility, safety and ancillary services) are in the sufficient category so that it would be better if there were improvements to the indicators of the 3 other variables such as: addition of public transportation, control of parking areas, addition of food stalls, procurement of lodging for public, improvement of central services information, the addition of public toilets, provided a special place to buy souvenirs, giving pictures of the types of rubbish in the trash, and need to add a communication network spot so that tourists feel more comfortable and enjoy their visit.","PeriodicalId":31295,"journal":{"name":"Jurnal Ilmu Kehutanan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46319466","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}

{"title":"Potensi Pemanfaatan Ipomoea pes-caprae (L.) R. Br. di Hutan Pantai Petanahan Kebumen","authors":"Frita Kusuma Wardhani, Erny Poedjirahajoe","doi":"10.22146/JIK.61398","DOIUrl":"https://doi.org/10.22146/JIK.61398","url":null,"abstract":"Vegetasi yang tumbuh di hutan pantai memiliki potensi ekonomi yang tinggi, salah satunya disebabkan oleh tingginya zat bioaktif yang memiliki sifat farmakologis. Salah satu spesies yang memiliki potensi tinggi sebagai sumber obat alam yaitu Ipomoea pes-caprae (L.) R. Br. Penelitian ini bertujuan untuk mengkaji potensi pemanfaatan I. pes-caprae di habitat alaminya yaitu di hutan pantai Kecamatan Petanahan, Kabupaten Kebumen. Pengamatan dilakukan dengan metode kuadrat ukuran 1 x 1 meter yang ditempatkan secara sistematik. Hasil penelitian menunjukkan bahwa kawasan yang paling dekat dengan pantai memiliki biomassa I. pes-caprae yang paling tinggi, yaitu dengan rata-rata sebesar 235,01 gr/m2. Sebaran spesies tersebut dibatasi oleh kompetisi dan naungan. Dalam bidang farmakologis kandungan fitokimia dalam ekstrak Ipomoea pes-caprae memiliki potensi yang tinggi untuk dikembangkan sebagai bahan baku obat. Namun ketersediaannya di hutan pantai Kecamatan Petanahan masih terbatas sehingga belum dapat dikembangkan untuk menjadi bahan baku obat alam. Potential Utilization of Ipomoea pes-caprae (L.) R. Br. in the Coastal Forest Petanahan Kebumen DistrictAbstractVegetation that grows in coastal forests has high economic potential, one of which is caused by the high bioactive substances that have pharmacological properties. One species that has high potential as a source of natural medicine is Ipomoea pes-caprae (L.) R. Br. This study aims to examine the potential use of I. pes-caprae in its natural habitat in the coastal forest of Petanahan District, Kebumen Regency. Observations were made using the 1 x 1 meter quadratic method which was placed systematically. The results showed that the area closest to the coast had the highest biomass I. pes-caprae, with an average of 235.01 gr/m2. The distribution of these species is limited by competition and shade. In the pharmacological field, the phytochemical content in Ipomoea pes-caprae extract has high potential to be developed as a drug raw material. But its availability in the coastal forests of Petanahan District is still limited so it cannot be developed to become raw material for natural medicine.","PeriodicalId":31295,"journal":{"name":"Jurnal Ilmu Kehutanan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42996715","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}

{"title":"Penyebaran Semut dalam Kawasan Hutan di Pulau Saparua, Propinsi Maluku","authors":"Fransina Latumahina","doi":"10.22146/JIK.61399","DOIUrl":"https://doi.org/10.22146/JIK.61399","url":null,"abstract":"Semut akan merespon kehadiran manusia dalam habitatnya, dimana kehadiran manusia melalui kegiatan pengambilan hasil hutan akan berdampak terhadap penyebaran semut dan peranannya dalam ekosistem hutan. Respon semut ditunjukan melalui perubahan nilai keragaman jenis, kelimpahan, dan kelimpahannya yang akan berubah sesuai dengan tekanan dalam habitatnya. Penelitian bertujuan untuk mengetahui kehadiran, kelimpahan, dan keragaman semut dalam Hutan Tuhaha yang telah mengalami tekanan akibat kehadiran manusia. Semut dikoleksi dengan tiga metode yakni Hand Collecting, Pitfall trap berisi larutan detergen, bait trap dengan umpan berupa larutan gula dan potongan ikan tuna. Hasil penelitian menemukan 3615 ekor semut dimana 592 ekor semut dengan menggunakan pitfaal trap, 515 ekor menggunakan metode Bait Trap dengan umpan berupa Ikan Tuna Mentah, 669 ekor semut dengan menggunakan umpan berupa larutan gula, dan 1839 ekor menggunakan metode Hand Collecting. Nilai kelimpahan jenis semut tertingi ditemukan pada jalur 10 sebesar 125 % dan Indeks keragaman Jenis tertinggi sebesar 1.45 pada jalur 10, sementara nilai kelimpahan jenis terendah ditemukan pada jalur 9 sebesar 75 % dan Indeks keragaman jenis terendah ditemukan pada jalur 9 sebesar 0.52. Kekayaan Jenis semut tertinggi ditemukan pada jalur 10 sebesar 4.7, sehingga diduga beberapa faktor yang berperan penting dalam penyebaran semut dalam Hutan Negeri Tuhaha yakni pH tanah antara 6.5 - 6.8, ketersediaan bahan organik, suhu udara yang sesuai diantara 250 o C – 27 0 C dan tutupan vegetasi. Spread of Ants in Forest Areas in The Island of Saparua Province Of MollucasAbstractAnts will respond to the presence of humans in their habitat, where the presence of humans through the extraction of forest products will have an impact on the spread of ants and their role in the forest ecosystem. Ant response is shown through changes in the value of diversity of species, abundance, and abundance that will change according to the pressure in their habitat. The research aims to determine the presence, abundance, and diversity of ants in the Forest of Tuhaha that have experienced pressure due to human presence. Three methods collect ants, namely, Hand Collecting, Pitfall Trap contains detergent solution, bait trap with bait in the form of sugar solution and tuna pieces. The results found 3615 ants where 592 ants using pitfall traps, 515 tails using the Bait Trap method with bait in the form of Raw Tuna Fish, 669 ants using bait in the form of a sugar solution, and 1839 using the Hand Collecting method. The highest ant species abundance was found in lane ten by 125%, and the highest species diversity index was 1.45 in lane 10, while the lowest species abundance was found in lane nine by 75 % and the lowest species diversity index was found in lane 9 by 0.52. The highest ant species richness found in lane 10 is 4.7, so it is assumed that several factors play an essential role in the spread of ants in the Tuhaha State Forest name","PeriodicalId":31295,"journal":{"name":"Jurnal Ilmu Kehutanan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45269615","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}

{"title":"Inventory of Invasive Alien Plant Species (IAPs) in Bali Botanic Garden and the Adjacent Areas","authors":"F. Kuswantoro, S. Sutomo, W. Sujarwo","doi":"10.22146/JIK.61377","DOIUrl":"https://doi.org/10.22146/JIK.61377","url":null,"abstract":"Similar to other botanic gardens, Bali Botanic Garden (BBG) is also prone to the spread of Invasive Alien Plant (IAP) species. Unfortunately, research about IAP species in BBG is still very limited. Thus, the study aims to update the list of IAP species in BBG and its adjacent areas as well as to provide a garden manager with data of the most important IAP species. This study was conducted by using sampling plots that were purposively established in three areas of BBG, namely the Ekor Burung (EB), VIP, and Kepala Burung (KB). Data analysis was performed to calculate the Relative Frequency (RF), Important Value Index (IVI), Clustering analysis, and NMDS ordination. The study was able to document 18 IAP species. Ageratina riparia and Bidens pilosa have the highest RF in EB, while the former also has the highest RF in VIP and KB. Similarly, the highest IVI was acquired by A. riparia in VIP and KB, as well as by Sida rhombifolia in EB. Cluster analysis revealed two subsets. NMDS ordination suggested that VIP and KB have more similar IAPs than the EB. This study suggested that A. riparia is the most important IAP species in BBG and its surrounding areas.Inventarisasi Tumbuhan Asing Invasif di Kebun Raya Bali dan Wilayah Sekitarnya IntisariSepertihalnya Kebun Raya lain, Kebun Raya Bali (BBG) juga rentan terhadap penyebaran Tumbuhan Asing Invasif (IAP). Sayangnya, penelitian tentang IAP di BBG dan daerah sekitarnya masih sangat terbatas. Karena itu, penelitian ini bertujuan untuk memperbarui daftar jenis IAP di BBG dan daerah sekitarnya serta menyediakan data jenis IAP paling penting bagi pengelola Kebun Raya. Penelitian ini dilakukan dengan menggunakan plot sampel yang secara purposive diletakan pada tiga wilayah BBG yaitu Ekor Burung (EB), VIP dan Kepala burung (KB). Analisis data dilakukan untuk menghitung Frekuensi Relatif (RF), Indeks Nilai Penting (IVI), analisis klaster dan ordinasi NMDS. Penelitian ini mampu mendokumentasikan 18 spesies IAP. Ageratina riparia dan Bidens pilosa memiliki nilai RF tertinggi di EB, sementara yang disebutkan pertama juga memiliki RF tertinggi di VIP dan KB. Demikian pula, nilai IVI tertinggi di VIP dan KB diperoleh oleh A. riparia serta oleh Sida rhombifolia di EB. Analisis klaster mengungkapkan dua subset. Ordinasi NMDS menunjukan bahwa VIP dan KB memiliki jenis-jenis IAP yang lebih mirip daripada EB. Studi ini juga menunjukkan bahwa A. riparia adalah jenis invasif paling penting di BBG dan daerah sekitarnya.","PeriodicalId":31295,"journal":{"name":"Jurnal Ilmu Kehutanan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45400213","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}

{"title":"Kadar Ekstraktif dan Sifat Warna Kayu Jati Plus Perhutani Umur 11 Tahun dari KPH Ngawi","authors":"Zulkahfi Zulkahfi, Denny Irawati, Dian Rodiana, Ganis Lukmandaru","doi":"10.22146/JIK.61419","DOIUrl":"https://doi.org/10.22146/JIK.61419","url":null,"abstract":"Pemanfaatan kayu jati dari pohon umur muda meningkat disebabkan adanya kesenjangan permintaan dengan ketersediaan kayu. Perhutani menanam pohon Jati Plus Perhutani (JPP) dengan karakteristik cepat tumbuh untuk meningkatkan produksi kayu jati. Pembiakan secara vegetatif ini diduga bisa berpengaruh terhadap sifat-sifat kayu. Kadar ekstraktif menjadi penting mengingat hubungannya dengan keawetan alami kayu dan sifat warna kayu. Penelitian ini bertujuan untuk mengetahui variasi kadar ekstraktif dan warna pada arah radial dan longitudinal kayu JPP. Sampel kayu diambil dari tiga pohon JPP berumur 11 tahun di KPH Ngawi. Faktor yang diamati terdiri dari arah longitudinal (pangkal, tengah, ujung); dan radial (gubal, teras terluar, teras terdalam). Kayu diekstrak secara berurutan dengan pelarut toluena, etanol, air panas pada alat soklet. Kadar fenolat total diuji dengan metode Folin-Ciocalteu untuk ekstrak toluena. Pengukuran sifat warna menggunakan sistem CIEL*a*b*. Hasil menunjukkan bagian pangkal memiliki kadar ekstrak terlarut etanol tertinggi, tetapi memiliki kadar fenolat total relatif rendah. Nilai kecerahan (L*) lebih tinggi di bagian ujung dibandingkan dengan bagian tengah dan pangkal sedangkan nilai kemerahan (a*) relatif tinggi di bagian pangkal. Secara nyata, ekstrak terlarut toluena, ekstrak terlarut etanol, dan kadar fenolat total di bagian gubal berbeda nyata dengan bagian teras dan terdapat perbedaan antara teras terluar dan teras terdalam pada kadar esktraktif terlarut toluena dan kadar ekstraktif terlarut etanol. Berdasarkan variasi radial, warna lebih gelap di bagian teras terluar dibandingkan bagian lainnya. Kadar ekstraktif terlarut air panas memiliki hubungan yang nyata (r = -0,72) dengan nilai L* di bagian gubal. Pada bagian teras, nilai L* memiliki hubungan negatif dengan kadar ekstrak terlarut etanol (r = -0,70), kadar ekstraktif terlarut air panas (r = -0,52), dan kadar ekstraktif total (r = -0,78). Secara nyata, nilai a* memiliki hubungan negatif (r = -0,58) dengan kadar fenolat total. Relatif rendahnya kadar ekstraktif dibandingkan umur dewasa serta tidak seragamnya sifat warna pada arah longitudinal perlu menjadi perhatian dalam pemanfaatan kayu JPP umur muda. Extractives Content and Colour Properties of 11-year-old Perhutani Superior Teakwood from Ngawi Forest Management UnitAbstractThe utilization of young teak wood had increased due to the gap in demand and the supply of raw materials. To meet the high demand, Perhutani had planted the fast growing of superior teakwood (Jati Plus Perhutani/JPP). This vegetative reproduction may affect the wood properties. Extractive content is important considering its relationship with the natural durability of wood and colour properties. The purpose of this study was to find out the effect of radial and longitudinal directions on extractives content and colour properties from JPP. The JPP wood samples (11 years) were located in Ngawi Forest Management Unit. The observed factors were verti","PeriodicalId":31295,"journal":{"name":"Jurnal Ilmu Kehutanan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46020276","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}

{"title":"Perceived Forest-based Ecosystem Services and Attitudes Toward Forest Rehabilitation: A Case Study in the Upstream of Central Java, Indonesia","authors":"Prasetyo Nugroho, S. Numata, N. Aprilianto","doi":"10.22146/JIK.61402","DOIUrl":"https://doi.org/10.22146/JIK.61402","url":null,"abstract":"Forest rehabilitation is essential in restoring forest-based ecosystemservices (ES) provided by forest area. However, the critical issue on how locals perceived importance of forest rehabilitation, and how forest rehabilitation generates, both direct and indirect, benefits for the adjacent communities has remained contentious. A questionnaire survey was employed to examine locals' perceived importance, perceived ES, and attitudes toward forest rehabilitation in a village adjacent to Perhutani's forest area in the upstream of a catchment in Central Java, Indonesia. In total, 90 usable questionnaires were collected. The findings indicate that their perceived pine-sap production, conserving forest area, and water availability are the importance of forest rehabilitation programs. Locals recognized various ES benefits, including provisioning, regulating, supporting, and cultural services, though the adverse impacts emerged. Spearman rank correlation analysis revealed that local's satisfaction with forest rehabilitation positively and significantly correlated with their positive perceptions and subsequently increase their willingness to be actively involved in forest conservation efforts. The findings also imply that forest managers should not only focus on delivering benefits but also be aware of the adverse impacts of forest rehabilitation and management practices, which are crucial for ensuring forest sustainability. Jasa Ekosistem Berbasis Hutan yang Diterima dan Sikap terhadap Rehabilitasi Hutan: Studi Kasus di Hulu Daerah Aliran Sungai di Jawa Tengah, IndonesiaIntisariRehabilitasi hutan penting untuk memulihkan jasa ekosistem berbasis hutan yang disediakan oleh kawasan hutan. Sementara rehabilitasi hutan sangat penting dalam memulihkan jasa lingkungan, pertanyaan mengenai bagaimana penduduk setempat memandang pentingnya rehabilitasi hutan, dan bagaimana rehabilitasi hutan menghasilkan manfaat, baik langsung maupun tidak langsung, bagi masyarakat sekitar masih diperdebatkan. Kuesioner survey dilaksanakan untuk menggali persepsi masyarakat tentang tingkat kepentingan, persepsi terhadap jasa lingkungan, dan sikap mereka terhadap rehabilitasi hutan di desa berdekatan kawasan hutan Perhutani, di hulu daerah alisan sungai, Jawa Tengah, Indonesia. Secara total, 90 kuesioner yang lengkap berhasil dikumpulkan. Temuan menunjukkan bahwa persepsi masyarakat terhadap pentingnya rehabilitasi hutan yaitu untuk produksi getah pinus, melestarikan kawasan hutan, dan ketersediaan air. Masyarakat desa merasakan berbagai jasa lingkungan yang diperoleh dari kawasan hutan meliputi manfaat penyediaan, pengaturan, dukungan, budaya, meskipun dampak negatif juga teramati. Analisis korelasi Spearman menunjukkan bahwa kepuasan masyarakat terhadap rehabilitasi hutan berkorelasi positif dan signifikan terhadap persepsi positif mereka, dan selanjutnya akan meningkatkan kesediaan mereka untuk terlibat aktif dalam upaya konservasi kawasan hutan. Temuan ini juga menyiratkan bahwa ","PeriodicalId":31295,"journal":{"name":"Jurnal Ilmu Kehutanan","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46766990","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}