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Jurnal Ilmu Kehutanan

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Published by Universitas Gadjah Mada

ISSN : 01264451 EISSN : 24773751 DOI : https://doi.org/10.22146/jik.28284

Core Subject : Science, Agriculture, Social,

Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Environmental Science

Focusing on aspects of forestry and environments, both basic and applied. The Journal intended as a medium for communicating and motivating research activities through scientific papers, including research papers, short communications, and reviews

Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ekologi

Articles 206 Documents

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Dampak Kepariwisataan terhadap Erosi di Kawasan Wisata Kaliurang Sofiudin Nurmansyah; Ambar Kusumandari; Kaharuddin Kaharuddin
Jurnal Ilmu Kehutanan Vol 1, No 1 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Impact of Tourism on Soil Erosion in Tourist Area of KaliurangTourism is one alternative of non timber based forest managements however, tourism activities will impact on the tourist areas, both biophysically and socially. The purpose of this research was to study the factors influencing soil erosion rate in tourist area, and to examine the effect of tourist characteristics, e.g. visiting characteristics and tourist activities on erosion rate.The erosion prediction was carried out at tourist areas including Hutan Alam (Natural Forest), Taman Bermain Anak (Play Ground), Taman Wisata Alam (Natural Tourist Park), and Kali Kuning Camping Ground. The Universal Soil Loss Equation (USLE) model was applied. Correlation analysis was used to analyze the correlation between factors influencing soil erosion rate (rainfall erosivity, soil erodibility, slopes, vegetation and conservation practices) and erosion.The research resulted that tourism significantly impacted on erosion at Play Ground, Natural Tourist Park 1, and Kali Kuning Camping Ground, except at Natural Tourist Park 2. The correlation analysis showed that all of the factors influencing soil erosion rate positively affected erosion. The results also showed that the tourist characteristics which influence erosion rate were tourists' visiting characteristics and their activities.

Alokasi Pengeluaran Rumah Tangga Penyadap Getah Pinus di Desa Somagede, Kabupaten Kebumen Jawa Tengah S. Andy Cahyono; Nunung Puji Nugroho; Yonky Indrajaya
Jurnal Ilmu Kehutanan Vol 1, No 1 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Expenditure Allocation of Resin Tapper`Households in Somagede Village, Kebumen Regency, Central JavaPine forest has contributed to local people economy, especially the resin tappers. Increasing income will raise the household expenditure both of consumptive and productive needs. This research was aimed to assess the expenditure allocations of resin tappers’ household and to identify the factors affecting them.Survey method was adopted in this research to collect the primary data of 30 respondents. The collected data was analyzed both quantitatively and qualitatively. Multiple linear regression model was applied to figure out the factors affecting the expenditure allocations of resin tappers’ household.The results of the study indicated that the expenditure of resin tappers’ household reached to Rp 2,366,459 per annum and 58,08% of it was food and beverage expenditure. The expenditure allocations were affected significantly by tappers’ age, food and beverage expenditure, and farm land size. The tappers’ age, food and beverage expenditure had a positive effect whereas farm land size had a negative effect on the household expenditure.

Pengaruh Variasi Penambahan Ragi dan Lamanya Waktu Fermentasi terhadap Hasil Fermentasi Etanol dari Serbuk Gergajian Kayu Ulin (Eusideroxylon zwageri T et B) Ahmad Jauhari; Noor Mirad Sari
Jurnal Ilmu Kehutanan Vol 1, No 1 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Effect of Variation yeast addition and Duration of Fermentation on the Amount of Ethanol Produced from Sawdust of Ulin Wood (Eusideroxylon zwageri T et B)The research was aimed to assess the influence of different levels of yeast addition and duration of fermentation on the amount and percentage of ethanol produced from sawdust of ulin wood as raw material.Method used in this experiment was chemical hydrolysis of cellulose by using nitric acid (HNO3) as chemical agent. This substrate was inoculated into yeast cell (khamir) to convert glucose into ethanol. The amount of ethanol (ml) was obtained from distilled water (ml) multiplied by the azeotropic value of ethanol (95,5%), while the value ethanol (%) obtained was from the amount of ethanol (ml) divided by the amount of distilled water (ml) multiplied by 100 percent.The study used a factorial design of 3 x 3 with 3 replications and the parameters used were A factor (amount of yeast) consisting of 5, 10, and 15 grams, respectively, and B factor (duration of fermentation) consisting of 1, 3, and 5 days, respectively. Significant differences of ANOVA at test levels of 5% and 1% will be continued by interaction test between the two factors to assess the influence of each factor on the amount and percentage of ethanol.Results indicated that the amount of yeast applied, duration of fermentation and interaction between the two gave very significant effects on the amount of ethanol (ml) and its percentage (%). Following the treatment on ulin wood sawdust, the lowest yield of ethanol was found at A1B1 treatment (5 g, 1 day) with. 1.69 ml, while the highest at A3B3 treatment (15 g, 5 day) with 5.19 ml. In terms of ethanol percentage, the lowest was found at A1B1 treatment with 9.4% and the highest at A3B2 treatment with 29.9%.

Sertifikat Lestari PT. Diamond Raya Timber: Aset atau Beban? Ahmad Maryudi
Jurnal Ilmu Kehutanan Vol 1, No 1 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Sustainable Certificate of PT Diamond Raya Timber: Asset or Liability?Several environmental non-government organizations and green parties pursue various strategies to promote sustainable management of forest resource. Due to the increasing environment awareness of some segments of timber users, they have established a certification body and developed a set of criteria and indicators, against which the performance of participating forest companies will be assessed. Early experiences in Indonesia showed that certification received warm welcome from several forest companies, as there is no question that they saw the attraction of being certified. However, it appears that their enthusiasm was dampened by the experience of a certified company. Certification might have been seen as more of a liability than an asset as the economic benefits from market access became less clear, while the costs became more apparent. The use of rigid standards might result in “negative” responses from forest companies. More proactive approaches might encourage the companies to join certification.

People Attitude Toward Promotion of Agroforestry Practices in Buffer Zone Area of Mt. Elgon National Park, Uganda Buyinza Mukadasi; Nabalegwa Wambede
Jurnal Ilmu Kehutanan Vol 1, No 1 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Agroforestry is a historical practice in Uganda where people raised trees, crops and animals together traditionally on the same unit of farmland. This study was conducted to assess the attitude of people regarding the contribution of agroforestry practices in socio-economic development in the buffer zone area of Mutushet and Kortek, Mt. Elgon National Park, Uganda.Primary data were collected through formal household interviews with the use of a structured questionnaire administered to five percent households selected randomly in the Village Environmental Committees (VECs). In addition, key informant interviews and informal group discussions were also held. Altogether 146 households were interviewed. Data were analyzed using Chi-square test.Results show that the attitude of people towards contribution of agroforestry practices is independent of VECs, ethnic group, settlement period, and family size and depends on occupation, literacy level, distance from National Park boundary, damage caused by wild animals, land holding size and number of livestock holding. The important policy recommendation drawn from these findings is that intensive extension and motivation programs should be launched in those areas where the majority of people have unfavourable attitude towards agroforestry practices.

Epidemi Penyakit Tumor pada Sengon (Paraserianthes falcataria) di Jawa Timur, Indonesia Soekadar Wiryadiputra
Jurnal Ilmu Kehutanan Vol 1, No 1 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Gall Rust Disease Epidemic on sengon (Paraserianthes falcataria) in East java, IndonesiaIn the early of 2005 at one of the coffee and cocoa estates in the district of Banyuwangi, East Java, an epidemic outbreak of gall disease on albizia (Paraserianthes falcataria) with heavy infestation level occurred. Arthropod pest initially was suspected as the causing agent of the gall. However, intensive observations in the field and laboratory revealed that the gall was caused by the rust fungus of Uromycladium tepperianum. It was a new outbreak of the disease reported in Indonesia.Observation at one division of the estate showed that the extent of albizia trees infected by the pathogen reached to more than 50%. There was an indication that environmental factors especially rainfall and humidity strongly increased the disease intensity and sporulation of the fungus. Results on the fungicide trial conducted in the field indicated that spraying of the mixed solution of Carbendazim (Delsene MX 80 WP) and Flusilazol (Nustar 400 EC) at the concentration of 1 g and 0.3 ml formulation per liter of water respectively was very effective in suppressing the infestation. These mixed fungicides could suppress the disease infestation to 60.1% compared with untreated trees.

Pola Aktivitas Harian dan Interaksi Banteng dan Rusa dalam Pemanfaatan Kawasan Padang Rumput Sadengan di Taman Nasional Alas Purwo, Banyuwangi, Jawa Timur Subeno Subeno
Jurnal Ilmu Kehutanan Vol 1, No 2 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Daily Activities Pattern and InteractionBetween Banteng and Deerin Sadengan Grazing a Area in Alas Purwo National Park, Banyuwangi, East JavaThis research was aimed to compare the pattern of daily activities between banteng and deer, and their interaction on using feeding ground in Alas Purwo National Park, Banyuwangi, East Java. Methods used in this research were scan sampling, focused on groups of banteng and deer and focal animal sampling for four chosen individuals from each group. The observations began at 06.00 until 18.00. Daily activities recorded were resting, moving, feeding and drinking. Data analysis was done through arrangement of an ethogram to show daily activity and the time budget, and descriptive analysis to portray daily activity and interaction between banteng and deer. The results show that there are differences in the time used for resting and feeding between banteng and deer. Banteng used feeding ground more for resting (93,2%) and moving (5,7%). While deer used more for feeding (36,6%) and resting (61,8% ). Among chosen individuals of banteng and deer time variation in daily activities was apparent. Adult female of banteng has the highest time for resting (10,6 hours). It also occurred in adult female of deer (8,4 hours). Individual of deer which has the highest time for feeding is offspring with duration of 6,1 hours. Interaction between banteng and deer on using feeding ground tended toward symbiosis of commensalisms, in which they use it together without fighting. They too will vocalize together whenever other species wants to use the feeding ground.

Dendrogram Zonasi Pertumbuhan Mangrove Berdasarkan Habitatnya di Kawasan Rehabilitasi Pantai Utara Jawa Tengah Bagian Barat Erny Poedjirahajoe
Jurnal Ilmu Kehutanan Vol 1, No 2 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Dendrogram Zoning of Mangrove Growth Based on Its Habitat in the Rehabilitation Area on the North Coasts, West Region of Central JavaThe growth of rehabilitated mangrove, although planted at the same time, shows differences in terms of density and height growth. Such condition is visible in the North Shore of Brebes, Tegal and Pemalang Regency.The research result shows that mangrove growth planted in 2001 on the North Shore of Brebes, Tegal and Pemalang Regency is not apart from several factors, among others are its habitat physical-chemical factors. The result of regression correlation analysis shows that the habitat factors which play an important role in the vegetation density are salinity, temperature and plankton population. Meanwhile, the most dominant factor which determines the vegetation height growth is salinity and phosphor. The combination role based on its habitat shows that mangrove growth in Brebes Regency on proximal (1P) and medial (1M) zone and the one in Pemalang Regency on proximal zone (3P) has the shortest cluster, so that those research locations have similarity on vegetation growth and its habitat factors. Meanwhile, the proximal (2P) zone in Tegal Regency is similar with the medial (2M) zone. Mangrove growth on distal zone in Tegal Regency has less good growth parameter and habitat factors compared to that of in Brebes and Pemalang for containing more sand.From the research result, it can be concluded that the existence of habitat factors salinity, plankton population and phosphor have to be taken into consideration if a mangrove area will be rehabilitated/planted especially using Rhizophora mucronata seedlings. In order to reach the maximum achievement, one thing which has to be taken into consideration is the habitat clustering of the planted area, especially in Brebes, Tegal and Pemalang Regency area.

Pengaruh Pola Susunan Laminasi Balok Bambu Tali (Gigantochloa apus Kurz) terhadap Kerapatan, Delaminasi dan Keteguhan Patah Muhammad Faisal Mahdie; Andy Rinaldi
Jurnal Ilmu Kehutanan Vol 1, No 2 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Effect of Lamination Pattern of Tali Bamboo (Gigantochloa apus Kurz) Beam on Density, Delamination, And Rupture StrengthBamboo is a potential species as its price is relatively less expensive than wood logs while it also represents a fast growing plant and is easy to plant. In general bamboos in South Kalimantan have not been exploited optimally. Its utilization for construction purposes is very limited. This study aims to identify the effects of lamination pattern on the density, delamination and rupture impregnability (Modulus of Rupture, MoR) of laminated bamboo blocks, with the combinations of a (reed wall- reed wall), b (reed wall-husk), and c (husk- husk and reed wall-reed wall). The results showed that lamination patterns affected the density, delamination and rupture impregnability of the laminae produced. The average density (kg/cm3) is 0.5321, 0.6923, and 0.6746 for treatments a, b, and c respectively. Delamination percentage (%) is 6.55, 16.65, and 21.1, while the rupture impregnability level (kg/cm2) is 228.99, 152.09,and 171.97 for treatments a, b, and c respectively. Delamination percentage of less than 10% suggets that the laminae produced can be used for building construction. that It is concluded that lamination pattern of reed wall-reed wall gave the best performance of bamboo lamina with the average density of 0.5321 kg/cm3, the delamination percentage of 6.55% , and the rupture impregnability level of 228.99 kg/cm2.

Aktivitas Manusia dan Distribusi Banteng (Bos Javanicus D’alton 1832) di Taman Nasional Alas Purwo Muhammad Ali Imron; Jefri Oloan Sinaga
Jurnal Ilmu Kehutanan Vol 1, No 2 (2007)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Human Activities and Distribution of Banteng (Bos Javanicus D’alton 1832) in Alas Purwo National ParkThis study aims to comprehend whether human activities contribute to the presence of banteng (Bos sundaicus d’Alton 1836) in the Alas Purwo National Park (APNP). We laid continuous strip line transects from centre of human activities to the direction of core area of APNP. Three locations were selected: Sadengan grazing area, Giri Salaka Hinduism praying area, and Kutorejo village; representing low to high human disturbance respectively. We collected both direct and indirect presence of banteng as well as human activities within 20 metre strip lines with 10 metre width. Data were compiled each 100 metres and analyzed with means comparison to observe difference among locations. Correlation analyses were used to assess the relation between distance from centre of human activities, human activities and banteng presence. Regression analysis was used when significant correlations found.Our non parametric test showed that human disturbances are significantly different among sites (Kruskal Wallis Test; df 2 = 6.220, p< 0.05). In similar tendency but different manner, it is showed that the different levels of human disturbance conveyed significant difference in number of banteng’s tracks (Kruskal Wallis Test; df 2 = 18.888, p< 0.05). The distance from centre of human activities is negatively related to number of human tracks (Spearman rho; r2= -0.307 N= 64, p<0.05*) and also to number of banteng’s tracks (Spearman rho, r2= -0.728 N= 30, p<0.05**). The regression analysis showed that number of human tracks explained 18.6% of total variation on number of Banteng’s tracks, while distance from centre of human activities explained 59%.

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Home Page

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Contact Name Tri Mulyaningsih

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Editorial Address https://jurnal.ugm.ac.id/jikfkt/about/editorialTeam

Location Kab. sleman, Daerah istimewa yogyakarta INDONESIA

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Contact Name
Tri Mulyaningsih

Contact Email
trimulya@unram.ac.id

Phone
+62274-512102

Journal Mail Official
jik@ugm.ac.id

Editorial Address
https://jurnal.ugm.ac.id/jikfkt/about/editorialTeam

Location
Kab. sleman,

Daerah istimewa yogyakarta

INDONESIA