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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Agromet Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat BERITA BIOLOGI Jurnal Hutan Tropika Jurnal Risalah Kebijakan Pertanian dan Lingkungan Jurnal Pusat Inovasi Masyarakat Jurnal Sylva Lestari Jurnal Ilmu Kehutanan
Istomo .
Departemen Silvikultur, Fakultas Kehutanan Dan Lingkungan, Institut Pertanian Bogor, Jalan Ulin, Kampus IPB Darmaga
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Materials Science & Nanotechnology Social Sciences

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Potentials of Jarak Pagar (Jatropha curcas Linn) as Green Belt based on the Rate of its Litter Decomposition Lailan Syaufina; Nurheni Wijayanto; Istomo Istomo; Khairia Nafia
Jurnal Silvikultur Tropika Vol. 2 No. 1 (2011): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.2.1.%p

Abstract

Previous study found thar Jarak pagar  has potency for fuel break in forest fire control. There are some requirements for vegetation to be fuel break. One of the requirement as fuel break is decomposition race in which the higher decomposition rate may be suitable for fuel break in order to prevent surface fuel accumulation. A study was conducted to analyze decomposition rate of Jarak pagar in the field. Some sample plots were established in forest plantation area of Gunung Hambalang Bogor managed by Perhutani under agroforestry system. The study revealed that Jarak Pagar in the study area has higher decomposition rate when compared to other tree sppecies. Therefore, Jarak Pagar meet the requirement for fuel break from decomposition rate point of view.
The Potency of Jarak Pagar (Jatropha curcas Linn) as a Fuel Break Based on Canopy Condition Lailan Syaufina; Nurheni Wijayanto; Istomo Istomo; Yuli Sunarti
Jurnal Silvikultur Tropika Vol. 2 No. 1 (2011): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.2.1.%p

Abstract

It is assumed that Jarak pagar (Jatropha curcas Linn) has potency for fuel break in forest fire control.  However, it needs to be evaluated in effectiveness of the function.  One of the requirement as fuel break is crown condition in which the plant crown need to have good performance in covering the area to prevent fire sppread. A study was conducted to analyze whether Jarak pagar meets the requirement for fuel break or not.  Some sample plots were established in forest plantation area of Gunung Hambalang, Bogor managed by Perhutani.  The study resulted that Jarak pagar in the study area does not meet the requirement for fuel break of which a good performance of crown is not shown.  It seems that soil characteristics influenced the result. 
The influence of Jatropha curcas Linn. Based Agroforestry Establishment to Land and Environment Productivity in Perum Perhutani KPH Bogor Plantation Area Istomo Istomo; Basuki Wasis; Eva Prihatiningtyas
Jurnal Silvikultur Tropika Vol. 2 No. 2 (2011): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.2.2.%p

Abstract

Agroforestry is one of society based forest management which have had important role to maintain and recover land productivity since years ago. Ecological consideration was needed for such agroforestry which involve the use of natural resources sustainable, by minimizing erosion and surface flow volume, and also biophysical environment. Jatropha planting was aimed to fulfill market demand of Bio-fuel as alternate energy. This research was aimed to quantify jatropha’s growth and land productivity in jatropha based agroforestry system; also to observe how jatropha based agroforestry system affected environmental change (soil physical, chemical and biological properties, and soil erosion). The result showed that the best jatropha’s growth response to height was the jatropha planting treatment as fencing in young mahogany plot. Land productivity showed by increasing total above-ground biomass rised the highest level in 2nd repetition of young mahogany plot, jatropha plant above ground biomass increased high in 1st repetition plot of  young mahogany. Surface flow showed incisive decrease in young mahogany plot (with the smallest mean value). The jatropha based agroforestry system mixed with young mahogany also showed the lowest erosion level. The highest value of sedimentation was showed in marginal area as control treatment, and the lowest in jatropha based agroforestry system mixed with young mahogany. Content of soil C-organic, total-N and CEC were increase during observation, though jatropha planting was not significantly affected soil physical and chemical properties. The 2nd jatropha plantation mixed with young mahogany plot showed the best response to fungal content. Particularly jatropha based agroforestry mixed with young mahogany showed better impact on soil quality than marginal area.
Pengaruh Pemberian Zat Pengatur Tumbuh NAA dan IBA Terhadap Pertumbuhan Semai Cabutan Tumih [Combretocarpus rotundatus (Miq.) Danser] Istomo Istomo; Fauzi Kiswantara
Jurnal Silvikultur Tropika Vol. 3 No. 1 (2012): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.3.1.%p

Abstract

The Influence of Plant Growth Regulators NAA and IBA on the Growth of Stump Seedling of Tumih [Combretocarpus rotundatus (Miq.) Danser]Tumih which has a Botany name Combretocarpus rotundatus is one of the species that lives in peat swamp forests. C. rotundatus often found in secondary forests or forests with open canopies. Nowadays deforestation often occurs in Indonesia, it is feared this species will be decrease and lead to scarcity of it in natural forest. C. rotundatus also have characteristic that suit for plan in effort to initiate rehabilitation of agitated peatlands. Efforts to propagate this species was applied by the stump method. The research conducted aims to determine the life and growth of tumih by giving the Plant Growth Regulators. The results showed that the percentage of life that is obtained for NAA at 66.67%, 68.89% of IBA, NAA and IBA combination of 71.11% and 64.44% for controls. Other factors that may affect it is initial height of plants and environmental conditions in research.
Effect of Media Combination Treatment on Seedling of Tumih (Combretocarpus rotundatus (Miq.) Danser) Growth Istomo Istomo; Niechi Valentino
Jurnal Silvikultur Tropika Vol. 3 No. 2 (2012): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.3.2.%p

Abstract

Tumih which has a Latin name Combretocarpus rotundatus  (Miq.) Danser)  is one of the species that lives in peat swamp forests. C. rotundatus often found in secondary forests or  forests with open canopies. Nowadays deforestation often occurs in Indonesia, it is feared this species will be decrease and lead to scarcity in natural forest. C. rotundatus also has characteristic that suit for plan in effort to initiate rehabilitation of agitated peatlands. Efforts to propagate this  species was applied by the stump method. The research conducted aims to determine the life and growth of tumih by giving the media combination  regulators. The results showed that the percentage  of life that is obtained for K1 at 86,67%, 80,00% of  K2, K3 of  35,56%, K4 at 62,22%, K5 at 71,11%, and 86,67% for K6. Other factors that may affect it is initial height of plants and environmental conditions in research.
Vegetative Propagation of PeatT Forest Tree Combretocarpus rotundatus (TUMIH (.Miq) Dancer) with Apical Cutting Methods Istomo Istomo; Rhomi Ardiansyah; Atok Subiakto
Jurnal Silvikultur Tropika Vol. 3 No. 2 (2012): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.3.2.%p

Abstract

Cutting  is  plant  propagation  system which  relatively  easy  and  produces  seeds with good  quality with the similar characteristics as its parent and takes less time. Until now, the success rooted cuttings of tumih still not known certainly. The research aim is determine the effect of giving the hormone IBA 100 ppm, NAA 100 ppm and combination of IBA 50 ppm  and  NAA 50  ppm  on the growth  of  Tumih  shoots  cuttings  (Combretocarpus  rotundatus  (.Miq)  Danser).  The conclusion  that can be  taken on the basis of this research was the addition of plant growth regulators  (IBA, NAA, and IBA + NAA) has no significant effect on the growth of shoots cuttings Tumih (Combretocarpus rotundatus (.Miq) Danser) so  that  the  use  of  growth  regulators  is  not  needed  in  breeding  of  Tumih  shoots  cuttings  (Combretocarpus  rotundatus (. Miq) Danser).
Diversity and Ecological Role Bryophyte in Sesaot Forest, Lombok, West Nusa Tenggara Nuroh Bawaihaty; Istomo .; Iwan Hilwan
Jurnal Silvikultur Tropika Vol. 5 No. 1 (2014): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.5.1.%p

Abstract

Diversity of mosses in Sesaot forest, Lombok, West Nusa Tenggara has 22 spesies, 12 family, and 3 classes. Diversity of mosses is the most common in the primary forest are 18 spesies, in fruit forest there are 12 spesies. And in the secondary forest are 7 species, there are 4 species contained in 3 areas, namely thuidium sp., barbella sp., calymperes sp., and lejeunea sp. Kind of mosses that mostly found is lejeunea sp., family is lejeuneaceae and classes is hepatice. And kind of mosses that lessly found is taxithelium sp., family is sematophyllaceae, and classes is music. Calyptotherium sp., family is entodontaceae, and classes is music. Plagiochila sp., family is lophoziaceae, and classes is music, and bazzania sp., family is lepidoziaceae, and classes hepatice. The condition of forest affect to the growth of mosses and its ecological roles in forest ecosystem. The mosses includes in pioneer plants, it is evidenced by many mosses that grow on fallen trees.
Evaluation of the Success Result Plants Revegetation in coal post-mining land Lati Site PT Berau Coal East Kalimantan Istomo .; Yadi Setiadi; Alvi Nadia Putri
Jurnal Silvikultur Tropika Vol. 4 No. 2 (2013): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.4.2.%p

Abstract

Mining activities in the forest areas are done through the land use of forest areas. The activities of mining must always be followed by reclamation and revegetation to restore the condition of damaged forest area as a result of mining efforts and forest areas can serve again in line with aimed. Revegetation is an effort to repair and restore the damaged vegetation by planting and maintenance activities on the grounds of forest areas former use. Evaluation needs to be done to find out the status of successful revegetation has been done by mining company. Purposes of this research are to assess the successful status of revegetation on post-mining land based on survival rate and plants performance of Acacia mangium on Block Q3 East Elevation 60 Lati Site of PT Berau Coal East Kalimantan. Observation also held to find out the causes of ineffective growth by result of soil analysis on post-mining land, and also to give recommendations of revegetation improvements.The result showed that the success of revegetation status on Block Q3 East Elevation 60 Lati Site is not successful based on survival rate and performance of planted plants. It is caused by the average values of growth and health plant percentage which lower than 80%. The average value of growth percentage is 79,31% and health plant percentage is 71,62%. The main factor of this condition is failure characteristics of soil revegetation which unsupport properly for the growth of plants. The level of soil acidity which appertain very acid soil can cause some important problems and it can be harmful to plants. Soil amendment and replanting vegetation should be done to improve revegetation on Block Q3 East Elevation 60 Lati Site PT Berau Coal East Kalimantan.Key words: Acacia mangium, evaluation, mining, revegetation
Potency and Distribution of Meranti (Shorea spp.) in Protected Area of PT. Wana Hijau Pesaguan, West Kalimantan POTENSI DAN SEBARAN JENIS MERANTI (Shorea spp.) PADA KAWASAN LINDUNG PT. WANA HIJAU PESAGUAN, KALIMANTAN BARAT Istomo .; Ma'shum Afnani
Jurnal Silvikultur Tropika Vol. 5 No. 3 (2014): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.5.3.%p

Abstract

Meranti (Shorea spp.) is a type of commercial timber. The existence of meranti in its natural habitat was decreasing because of illegal logging and exploitation. This research aim to assess the potency and distribution pattern of meranti species, to calculate diversity meranti and also to calculate biomass of meranti species at the protected area. The result of this research showed that the quantity of meranti species in proctected area as much as 13 species. Meranti density at the location of germplasm protected area as much as 31 individuals/ha, at the forest area with slope > 25 % as much as 48 individuals/ha, riparian left side as much as 25 individuals/ha and riparian right side as much as 9 individuals/ha. Distribution patterns generally group and uniform. Volume meranti are germplasm protected area as much as 2.63 m3/ha, at the forest area with slope > 25 % as much as 139.14 m3/ha, riparian left side as much as 30.59 m3/ha, riparian right as much as 26.90 m3/ha. Meranti total biomass on the location of germplasm protected area 9.15 tons/ha, at the forest area with slopes > 25% 127.87 tons/ha, riparian left side 27.34 tons/ha and riparian right side 29.7 tons/ha.Keyword: Distribution, Meranti (Shorea spp.), PT. Wana Hijau Pesaguan’s Protected Area, Potency
The Species Structure and Composition Stand with Root System of Plants in Karst Area in Bantimurung-Bulusaraung National Park, Resort Pattunuang-Karaenta STRUKTUR DAN KOMPOSISI TEGAKAN SERTA SISTEM PERAKARAN TUMBUHAN PADA KAWASAN KARST DI TN BANTIMURUNG Istomo .; Aji Nuralam Dwisutono
Jurnal Silvikultur Tropika Vol. 7 No. 1 (2016): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.7.1.%p

Abstract

Plants in Karst Area have different characteristics and distinctive when compared with plants of other forest ecosystem. The purpose of research is to assessing the composition and stand structure and root system of plants in karst areas in Bantimurung-Bulusaraung National Park, Resort Pattunuang-Karaenta. This observation plots determined by purposive sampling based on the representation of the stand. Three sample plots lines with the size of 20 x 100 m each were constructed in the research site. The research was spread out on four habitats that are on hill base, slopes, summit with considerable soil cover, and summit with very little soil cover. The number of species on the research area is amounted 108 species of seedlings and understorey plants, 108 species saplings, 63 species poles and 78 species trees. Horizontal structure inverted J-shaped and vertical structure of the stand consist of four strata (B, C, D, and E strata). Overall, the spatial distribution patterns have a clumped distribution pattern. Uniform distribution pattern is only found in Palaquium obovatum species of pole on slopes and Dracontomelon dao species of tree on base. Pterospermum celebicum has the highest value of shoot-root ratio on the hill base, index root binding highest value with category of moderate (1.5-3.5) on hill base and index root anchoring highest value with the high category (>1.0) on summits with considerable soil cover.Key words: stand composition, root system, stand structure
Co-Authors . Solichin Abdul Aziz Adisti Permatasari Putri Hartoyo Agus Hikmat Aji Nuralam Dwisutono Aji Nuralam Dwisutono Alvi Nadia Putri Andita Pradiastoro Andita Pradiastoro, Andita Ari Fardian Ariyani Pramudita Utami Atok Subiakto Atok Subiakto Atok Subiakto Azizah, Ummiati Bambang Hero Saharjo Basuki Wasis Berliyana, Cincy Bintang C. H. Simangunsong Cahyo Wibowo Detty Sumiyati Didik Suharjito Djoko Wahjono Edhi Sandra Elsa Widyastuti Endang Suhendang Erianto Indra Putra Eva Prihatiningtyas Fauzi Kiswantara Ferliana, Erika Fifi Gus Dwiyati Hamzah Hamzah Haris Arifiyanto Hidayat Haris Arifiyanto Hidayat, Haris Arifiyanto Herry Purnomo Hesti Lestari Tata Ida Sufaidah ISKANDAR ZULKARNAEN SIREGAR Iwan Hilwan Karlina Fitri Kartika Khairia Nafia Khalid Hafazallah Lailan Syaufina Leti Sundawati Lilis Setyawati Lisdayanti Lisdayanti Ma'shum Afnani Mega Damayanti Meyrista Sekar Agta Putri, Nindhy Mia Afriyani Mufti Abdillah Mufti Abdillah Muhdin Niechi Valentino Nisa Armila Nong Ayu Eka Widyasari Nur Eliya Farida Nurheni Wijayanto Nuroh Bawaihaty Nurul Hidayati Permatasari Putri Hartoyo, Adisti Prijanto Pamoengkas Prima Martha Dena Putri Novita Sari Rachmat, Henti Hendalastuti Rahaju, Sri Rahmadianto, Susilo Ramdhani Fitriansyah, Muhammad Rendra Piscestria Nugraha Rhomi Ardiansyah Rizki Mardhatillah Sandy Ghifary Sri Rahaju Sri Wilarso Sri Wilarso Sri Wilarso Budi Susanti, Cindhy Susilo Rahmadianto Syafda Roswandi Tarma Purwanegara Ujang Suwarna Vianti Vianti Wahyu Hartarto Yadi Setiadi Yuli Sunarti Yuniar Safitri