Jurnal Manajemen Hutan Tropika
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Casualty Per Cent dalam Perhitungan Etat Hutan Tanaman Jati Perum Perhutani (Casualty Per Cent on AAC Determination of Teak Forest Plantation in Perum Perhutani)
Get PDFThe research was aimed to detect the change of forest area over planning periods to estimate casualty over production period of forest management. It is undeniable fact that teak plantation area has inevitable risk due to bad practices of illegal logging, deforestation, and forest degradation. However, Perum Perhutani does not consider these risk factors in the company yield regulation and annual allowable cut (AAC) determination. The results show that the percentage of forest area that changed into the higher age class by order from the lowest age class were 16.3% (age class I to II), 33.74% (age class II to III), 3.36% (age class III to IV), 31.54% (age class IV to V), 19.69% (age class V to VI), and 15.73 % (age class VI to VII). The casualty per cent calculated from age class I, II, III, IV, V, VI were 75%, 70%, 55%, 54%, 32%, and 16%, respectively. The AAC regarding to the casualty per cent for planning period 2005-2014 in Bagian Hutan Kradenan Utara was 595 m3/year, while the current AAC calculation was 1.840 m3/th, regardless the casualty percent
Perencanaan Jalur Interpretasi Alam Menggunakan Sistem Informasi Geografis
Get PDFBeing established in 2004, Gunung Merbabu National Park (GMNP) is one among several new national parks in Indonesia. Ecotourism activities in this area have not been properly developed by Perum Perhutani (as the past management authority) although the area is very potential to be developed as an ecotourism site for activities such as nature interpretation, apart from camping and hiking which are already carried out. With the change of the area’s status into a national park, the opportunity of ecotourism development is increased as the area is presently managed by a management authority named Gunung Merbabu National Park Office. As a part of ecotourism, nature interpretation is very important in connecting visitors to natural resources, which is one of the urgent services of GMNP. The objective of this research is to develop interpretation planning of various nature tracks in the park, based on the tracks’ resources and users’ demands. The Query Builder tool was employed in the selection of the user-oriented nature interpretation tracks. The synthesis of tracks’ resources and users’ demand resulted in 8 tracks, e.g. Selo–Puncak, Tekelan–Puncak, Selo II, Selo III, Tekelan IV, TWA–Krinjingan Waterfall, TWA–Watu Tadah Waterfal, and TWA–”Dufan”
Genetika Populasi dan Strategi Konservasi Badak Jawa (Rhinoceros sondaicus Desmarest 1822) (Population Genetics of Javan Rhino (Rhinoceros sondaicus Desmarest 1822) and It’s Conservation Strategy)
Get PDFJavan rhino (Rhinoceros sondaicus Desmarest 1822) of which spread is limited in Indonesia and Vietnam is the rarest species among 5 species of rhino in the world. Without appropriate and long-term well organized management action, the population of javan rhino will be in extinction. This research studies about the usage potential of javan rhino population genetics data in designing javan rhino conservation program. The application of genetics study in conservation problem is based on the population genetics theory. The population genetics is one of population biology branch which studies about the factors determining genetic composition of population and how they play role in evolution process. The genetic characteristic identification can help to give the characteristic genetic information which has function as genetic marker or gen in javan rhino management. It can also help to do translocation the javan rhino especially for breeding management effort to avoid inbreeding and to improve the heterozygosis. The analyzing result shows that the management of conservation strategy which can make javan rhino population reaches the population viable minimum number is needed urgently. Furthermore, it also shows that translocation and reintroduction to build the second population of javan rhino is also important to do. Keywords: javan rhino, population genetics, translocation, second populatio
Pengeluaran Limbah Penebangan Hutan Tanaman Industri dengan Sistem Pemikulan Manual
Get PDFThis paper presented result of the study on extraction of felling waste by manual bundling systems: assessment of qualitative performance The study is carried out at an Industrial Plantation Forest in South Kalimantan. Two bundling methods were apllied in this study, i.e. bundling by the use of net and rope. The results of the study showed that adaptation level of workers for the systems were good enough. The most mistaked work elements for both methods was compacting the waste for bundling, while the less mistaked work element was unload travel to the waste location.
Micro Environmental Change in Various Form Land Cover Revegetation
Get PDFEvaluation of land rehabilitation (revegetation) activities is necessary for measuring the extent of success of the ongoing activities in rehabilitating and recovering degraded lands. One way for evaluating the success of land rehabilitation (revegetation) is by determining the changes of micro enviroment. The objective of this research was to study the changes of micro environment in various types of revegetated land cover, including scrub/bush land (SB), agricultural land (TP), monoculture teak (JM) and mixed crops (TC) in Ciliwung upper watershed. Research results showed that the highest air temperature and soil temperature were obtained at SB, respectively at 32.8 °C and 26.5 °C, and the lowest at TC, respectively at 28.1 °C and 20.7 °C. Relative humidity and soil moisture were highest at TC (72.3% and 96%) and lowest at SB (60.8%), and the lowest soil moisture occurred at JM (45%). The highest infiltration rate occurred on TP (475.5 mm h-1, very rapid), followed by JM (117 mm h-1, fast) and TC (80 mm h-1), and the lowest at SB (17.65 mm h-1, medium slow). Erosion reductions occurred after 6 years of the revegetation activities with the following results:TC (96,676.1 ton year-1 ha-1), JM (10,790 ton year-1 ha-1), TP and SB (52,867.9 ton year-1 ha-1 and 24,612.6 ton year-1 ha-1). The micro environments for all land cover types were better after revegetation activities.
 
Status and Perspectives of the Forestry Education in Papua New Guinea
Get PDFThe future of forestry within economic and social activities has to be envisioned and defined, in order to better integrate its multi functionality into education. Only a good definition of the roles played by forestry and the responsibilities future practitioners will carry can help define the curricula and methods. A revision of the current status of forestry science development in Papua New G is given considering its geographical location, market new trends, potential advantages, historical enrollments of students and staff, facilities, and nexus with other institutions. It was found that the forestry department of University of Technology Papua New Guinea has been releasing graduates in the last 36 years with a sub optimal formation, the causes are discussed and possible solutions formulated.
 
Pemanfaatan Ekosistem Mangrove bagi Minimasi Dampak Bencana di Wilayah Pesisir
Get PDFIndonesian beach region laid down in the critical area on nature disaster like tsunami. Tsunami on December 26, 2004, has greatly destroyed beach region in several districts in NAD and Nias. This disaster had raised responses from Indonesian people, especially on attempt to reserve the beach area to decrease the damaged of tsunami. One effort on rehabilitation the damaged beach area were through planting mangrove. Mangrove forest ecosystem are a unique beach ecosystem about form of steam, canopy and root system. Growth the best on muddy beach with influenced by the high and low tide and salty water. This vegetations have many important as a nature reserve beach area especially to minimized the disaster of tsunami. Besides this, the area and distribution of ecosystem mangrove has decrease by continue until now. Tsunami on December 26, 2004 has bring the nations of Indonesia more be awared on the important to protect and conservation of mangrove forest. Government, private, and NGO, have the prioritas of savety beach area by planting mangrove
Evaluasi Pertumbuhan Tanaman Meranti (Shorea spp.) di Haurbentes BKPH Jasinga KPH Bogor Perum Perhutani Unit III Jawa Barat
Get PDFPlanting trials of Shorea spp. have been conducted outside their natural distributional range. Initially it was planted in Haurbentes Experimental Garden (1940) at Jasinga, West Java. This research is intended to get information about growth of all of Shorea\u27s variety that have been planted at 1984, 1988 and 1992 at the location, so we can select the species that suitable to be explored. From each of them, we take four sample plots. The size of the sample plot is 50 m x 50 m or about 0,25 ha. The results of the trial showed that Shorea spp. stand was flowering and giving a good seed harvest. It was also shown that the biggest growth species is Shorea leprosula Miq., namely 30,65 cm (total height) and 19,88 m (diameter) at 13 years old. The averages of the height and diameter growth are 0,49-0,66 m and 0,48-0,64 cm per 6 month at 9 years old. The species that are suggested to be explored at the location are S. leprosula Miq., S. stenoptera Burck, S. stenoptera Burck forma and S. pinanga Scheff
Beberapa Metode Pemecahan Dormansi Benih Leucaena leucocephala (Lmk. de Witt.) dan Beberapa Fungi Patogenik yang Berasosiasi dengan Benih
Get PDFPenelitian ini bertujuan untuk menentukan (1) metode pemecahan dormansi benih dan (2) menentukan fungi patogenik yang berasosiasi dengan benih. Pemecahan dormansi dengan perendaman benih dalam asam sulfat 65-75% selama 25-35 menit sangat efektif untuk benih no. 3, kurang efektif untuk benih no. 4, tidak efektif untuk benih no. 2 dan mematikan benih no. 1. Akan tetapi untuk semua tingkat kemasakan, makin tinggi konsentrasi asam sulfat atau makin lama perendaman benih dalam asam sulfat, makin tinggi daya berkecambah benih. Terdapat interaksi antara tingkat kemasak-an benih dengan konsentrasi asam sulfat. Metode pemecahan dormansi dengan skarifikasi memakai “sample seed huller” dengan tiga kali pelewatan cukup efektif untuk benih no. 2, no. 3 dan no. 4. Perlakuan yang sama mengakibatkan semua benih no. 1 menjadi rusak. Perendaman benih dalam air mendidih selama 24 jam juga efektif, kecuali untuk benih no. 1 yang menjadi rendah daya berkecambahnya sesudah perlakuan tersebut. Pemecahan dormansi dengan penempatan benih pada 400 C selama 24 jam kurang efektif. Fungi patogenik yang berasosiasi dengan benih adalah : Aspergillus sp., Penicillium sp., Colletotrichum sp., Pythium sp. dan satu jenis yang tidak dikenal (species X), menyebabkan kerusakan pada benih
Directives for Mangrove Forest and Coastal Forest Rehabilitation in Earthquake and Tsunami Disaster Area in the Provinces of Manggroe Aceh Darussalam and Sumatera Utara (Nias Island), Indonesia
Get PDFPeristiwa gempa bumi dan tsunami yang melanda Nanggroe Aceh Darussalam (NAD) dan Pulau Nias Sumatera Utara pada bulan Desember 2004 telah mengakibatkan rusaknya sebagian besar hutan mangrove dan hutan pantai di kedua wilayah tersebut. Berhubung kedua tipe hutan tersebut sangat penting untuk menopang kelangsungan hidup penduduk pantai, maka penelitian ini dilakukan untuk mendapatkan arahan rehabilitasi hutan mangrove dan pantai yang rusak akibat tsunami di NAD dan Pulau Nias. Hasil penelitian menunjukkan bahwa wilayah pantai yang tanahnya berupa tanah mineral yang bukan lumpur dengan salinitas yang tinggi (di atas 10 0/00) seyogyanya ditanami oleh jenis mangrove eklusif (Rhizophora stylosa, R. apiculata, Sonneratia alba, Ceriops tagal dan Aegeciros floridum) dan mangrove asosiat (Osbornea octodonta dan Scyphiphora sp.), tanah bukan lumpur dengan salinitas rendah oleh berbagai jenis pohon hutan pantai (Casuarina equisetifolia, dan lain-lain), tanah lumpur bersalinitas tinggi oleh Avicenia spp. dan R. Mucronata; dan tanah gambut seyogyanya ditanami oleh Bruguiera gymnorrizha. Adapun lebar jalur hijau vegetasi yang disarankan adalah minimal 225 m untuk wilayah NAD dan 211 m untuk wilayah pulau Nias. Untuk merealisasikan kegiatan rehabilitasi vegetasi pantai yang bersifat multitahun di NAD dan Nias maka kegiatan rehabilitasi tersebut harus ditempatkan dalam rangka pembangunan daerah