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INDONESIA
Jurnal Ilmu Kehutanan
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 6 Documents
 1 
Search results for , issue "Vol 1, No 1 (2007)" : 6 Documents clear
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (172.447 KB) | DOI: 10.22146/jik.1537

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (165.45 KB) | DOI: 10.22146/jik.1538

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (290.271 KB) | DOI: 10.22146/jik.1539

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (98.122 KB) | DOI: 10.22146/jik.1540

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.416 KB) | DOI: 10.22146/jik.1541

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (220.291 KB) | DOI: 10.22146/jik.1542

Abstract

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.

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