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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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PERKEMBANGAN TEGAKAN SETELAH PENEBANGAN DI AREAL IUPHHK-HA PT. BARITO PUTERA, KALIMANTAN TENGAH Growth Development of Logged-Over Stand in the IUPHHK-HA Area of PT. Barito Putera, Central Kalimantan Istomo .; Rendra Piscestria Nugraha
Jurnal Silvikultur Tropika Vol. 8 No. 1 (2017): 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.8.1.69-77

Abstract

Logging activity is one of the factors which changes the structure of forest stand. The objective of this study was to determine the species composition and development of forest stand structure in the IUPHHK-HA area of PT. Barito Putera, Central Kalimantan, especially on the logged over area (LOA) of year 2002, 2007, 2012, and also on the pre-logged area of year 2014 as a comparison (primary forest). Based on observations which have been made, species Shorea leprosula were dominant with different rates of growth in each observation area. Growth development of the stand on logged over area can be said to be normal, because it is in the process toward a normal forest conditions. Potency of the stand before felling in 2014 was 103 trees/ha for the nucleus trees, and 49 trees/ha with volume of 317.25 m3/ha of mature timber (ready to be harvested). On LOA of year 2012, the number of core trees was 77 trees/ha, and 51 trees/ha for mature timber (ready to harvested) with a volume of 584.84 m3/ha. LOA in 2007 exhibited the nucleus trees as many as 93 trees/ha and 53 trees/ha of mature timber (ready to be harvested) with a volume of 427.95 m3/ha. LOA in 2002 exhibited nucleus trees as many as 75 trees/ha and 59 trees/ha of mature timber (ready to harvested) with a volume of 442.41 m3/ha. The differences of growth development in the observation area were probably caused by illegal logging activities that occur in the forest area, and the damage of residual stand (including nucleus trees) as a result of logging and log transportation activities. Logged over forest conditions can be said to be in balance because there were more than 25 nucleus trees/ha remaining, appropriate to the Selective Cutting and Line Planting (TPTJ) regulations, which indicates that the logged over forest can be utilized in subsequent cutting rotation.Key words: composition, Dipterocarp forest, logged-over area, core tree, stand structure.
PENDUGAAN POTENSI PEREKRUTAN PERMUDAAN ALAM OLEH POHON INDUK DI HUTAN MANGROVE IUPHHK-HA PT. BUMWI, TELUK BINTUNI, PAPUA BARAT Potential Estimation of Seedling Recruitment by Seed Trees in Mangrove Forest IUPHHKHA PT. BUMWI Bintuni Bay, West Papua Istomo .; Mia Afriyani
Jurnal Silvikultur Tropika Vol. 9 No. 1 (2018): 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.9.1.69-77

Abstract

Since 1978 one of the legal silviculture systems in Indonesian regard to managing mangrove forest is seed tree method. The ability of this silviculture system to recruit the seeds to fulfill the regeneration is one of the importantaspects. The research is conducted to get the information about regeneration condition and the ability of seed tree method to recruit the regeneration in any various plot with different agecutting. Vegetation analysis for naturalregeneration (seedlings and saplings) were conducted at four different age logged-over area with the total 640 plots. The plot size is 78.5 m2. The result showed that existence of seed tree can affect the type of regeneration for seedlings recruitment with percentage between 59.52% to 83.37%.Key words: mangrove, natural regeneration, seed tree, seedling recruitment
Komposisi Jenis dan Struktur Tegakan Berbagai Formasi Hutan di Resort Bama Taman Nasional Baluran, Jawa Timur Istomo Istomo; Wahyu Hartarto
Jurnal Silvikultur Tropika Vol. 10 No. 2 (2019): 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.10.2.75-82

Abstract

Baluran National Park is a oldes national park and unique in terms of existing ecosystems. One area that is considered to be of broad condition is Bama Resort. Baluran National Park has various forest formations including mangrove formations, coastal forests, savana forests, seasonal forests, rainforests, and plain forests. This study aims to examine the composition and structure of each forest formation in Baluran National Park in East Java. The number of plant species found in mangrove forest formations were 6 species, 40 species of coastal forest, 37 species of savana forest, 44 species of rain forest, 28 species of lowland forest, and 50 species of seasonal forest formations. The highest density values were in savana forest formation at the seedlings and understorey level of 132445 ind / ha while the density at the tree level was found in the mangrove forest formation of 346 ind / ha. The diversity index of seedlings and understorey species is medium (2 <H '<3) while for other growth rates it is classified as medium and low (0 <H' <3). The value of community similarity between overall forest formations is categorized as low (values below 50%.). Overall header stratification in each formation is in strata c. Key words: Forest Formation, Species Composition, Structure, Baluran National Park
Perkembangan Pertumbuhan Tegakan Setelah Penebangan di Areal IUPHHK-HA PT. Diamond Raya Timber Istomo Istomo; Mega Damayanti
Jurnal Silvikultur Tropika Vol. 11 No. 1 (2020): 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.11.1.32-37

Abstract

Peat swamp forest management which is less precise will cause diversity on peat swamp forest decreased, in particular endemic species that can only be grown on peat swamp forest. So the research about the condition of peat swamp forest after logging needs to be done. This research aims to analyze species diversity and the development of stand growth after logging as well as analyze stability of species diversity in logged forest IUPHHK-HA PT Diamond Raya Timber. The data collected by combination of path method and grid line method. This research located in biodiversity strip (Protected Area) and logged over area (LOA) 2013, logged over area (LOA) 2015 and logged over area (LOA) 2016. The results showed that condition of the forest in the studied area was already quite stable with index of evenness ranged at 0.56-0.94. There is decreasin stand potential compared with biodiversity strip areal. Stand potential in biodiversity was 254,06 m3/ha, LOA 2013 was 99,72 m3/ha, LOA 2015 was 53,57 m3/ha and LOA 2016 was 58,41 m3/ha. Keywords: peat swamp forest, stability, stand potential, LOA, diversity
Asosiasi Ramin (Gonystylus bancanus (Miq.) Kurz) dengan Jenis Dominan di IUPHHK-HA PT Diamond Raya Timber, Riau Istomo Istomo; Ida Sufaidah
Jurnal Silvikultur Tropika Vol. 11 No. 2 (2020): 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.11.2.56-64

Abstract

Ramin is one of slow growing spesies, have a medium until big measurement, have a silindris stem, high total reach 40-50 m with DBH reach 120 cm. The purpose of this research is to know association between ramin (Gonystylus bancanus (Miq.) Kurz) and dominan species in IUPHHK-HA PT Diamond Raya Timber, Riau. Vegetation analysis used combination method between strip and line compartment method. Result showed that no one of dominan species have association with Gonystylus bancanus in tree and pole level at IUPHHK-HA PT DRT. Although there is no species in pole level that have association with Gonystylus bancanus, but there is tendency that Gonystylus bancanus have positive association with Palaquium obovatum, Urandra scorpioides, Carallia brachiata, and have negative association with Artocarpus teysmanii and Eugenia sp. At tree level Gonystylus bancanus have a tendency that have positive association with Shorea uliginosa, Palaquium obovatum, Eugenia sp., Horsfieldia glabra, and have negative association with Aglaia rubiginosa and Mangifera foetida. Keywords: Association, combination, dominan species, Gonystylus bancanus, growing spesies
Struktur Tegakan dan Sebaran Jenis Terentang (Campnosperma auriculata) dan Mendarahan (Knema laurina) di Hutan Rawa Gambut Istomo Istomo; Abdul Aziz
Jurnal Silvikultur Tropika Vol. 12 No. 1 (2021): Jurnal Silvikutur 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.12.1.9-16

Abstract

Peat swamp forests in Indonesia have an important role as a water provider, water storage, carbon storage, and as a place to live for flora and fauna. Terentang (Campnosperma auriculata) and mendarahan (Knema laurina) are some of the main trees in peat swamp ecosystem. This research aims to determaine stand structure and distribution of terentang and mendarahan species in peat swamp forests. The research was conducted at Sebangau National Park and Sungai Bram Itam Peatland Protected Forest using the vegetation analysis method with a plot size of 100 m x 100 m, divided into sub-plots size 20 m x 20 m, and used for data collection for trees with size ≥ 10 cm. The results in Sebangau National Park was 115 individuals of terentang, 10 individuals of mendarahan and total of all species was 1043 individuals. while in the Sungai Bram Itam Peatland Protected Forest was 5 individuals of terentang, 21 individuals of mendarahan and total of all species was 543 individuals. The stand structure at both locations classified as normal. The spreading pattern of Terentang and mendarahan trees is a uniform distribution pattern. Keywords: Campnosperma auriculata, Knema laurina, Peat swamp, Species distribution, Stand structure
Asosiasi Bakau (Rhizophora apiculata Blume.) dengan Jenis-Jenis Mangrove Lainnya di Pantai Bama Taman Nasional Baluran Jawa Timur Istomo Istomo; Sandy Ghifary
Jurnal Silvikultur Tropika Vol 12 No 3 (2021): Journal of Tropical Silviculture
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.12.3.135-143

Abstract

Mangroves’s forest at Bama Beach has 95.8 ha. The purpose of this research is to studied the association of Rhizophora apiculata that lives dominant at Bama Beach Baluran National Park East Java. The methods used in data collection is an analytical method of vegetation with terraced path method. This method conducting five paths, each path consisted of 10 plots with 10 m x 100 m which divided into two sub-plots with 5 x 5 m and 10 x 10 m, with total 50 plot (0.5 ha). Data collection consist of diameter and height. The results show that Rhizophora apiculata associated with Rhizophora stylosa at path 1 and 3, however the association type was negative and the association index number categorized as very low. On the other hand, there are some species that not associated with each other but they have a positive association, which founded at path 4 and 5. Path 4 consist of Rhizophora apiculata with Ceriops tagal and path 5 consist of Rhizophora stylosa, Bruguiera gymnorrhiza, and Syzygium polyanthum. Keyword: association, Baluran National Park, mangrove zonation, Rhizophoraceae,
Komposisi dan Struktur Vegetasi pada Proses Suksesi di Hutan Rawa Gambut Sedahan Taman Nasional Gunung Palung, Kalimantan Barat Istomo Istomo; Ari Fardian
Jurnal Silvikultur Tropika Vol 12 No 3 (2021): Journal of Tropical Silviculture
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.12.3.178-185

Abstract

This study aims to analyze the species composition and vegetation structure in the succession process in the Sedahan Peat Swamp Forest, Gunung Palung National Park. Data collection using vegetation analysis on three forest types namely young secondary, old secondary, and climax forest. Research shows that the number of tree species found is decreasing in the forest the older ones, show the species that are able to survive the succession process. The highest important value index of the seedling level are ubah (Syzygium leptostemon) in the climax (87.1%), saplings are mahang (Macaranga pruinosa) in young secondary (84.9%), poles and trees are mahang in old secondary by also 135.5% and 137.1%. Community at pole growth rate in forest young secondary and young secondary have the largest significant Index of Similarity value have relatively the same conditions. Canopy stratification found in forests secondary forest is strata C and B while climax forest is C, B, and A. Keywords: peat swamp forest, species composition, succession process, vegetation structure
PENGARUH ASAL BAHAN DAN MEDIA STEK TERHADAP KEBERHASILAN STEK PUCUK TEMBESU Fagraea fragrans (Roxb.) Istomo Istomo; Atok Subiakto; Susilo Rahmadianto
BERITA BIOLOGI Vol 13, No 3 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i3.671

Abstract

Fagraea fragrans known as tembesu is a tree species used for panel wood (MDF, medium density fiberboard), particle board, veneer and furniture. The aim of this experiment was to know successful growth origin of shoot cutting F. fragrans and to study the effect of combination treatment the origin of cutting material and media F. fragrans. The shoot cutting was done with KOFFCO system. The results showedthat the cutting material from seedling juvenile shoot provided 61.56% of shoot formation, 91.42% of survivorship and 76.33% root formed.In addition, origin material from seedling juvenile gave a significantly effect on root length and wet root weight, wet shoot weight, dry root weight and significant on dry shoot weight parameter. The increasing age of the parent tree, diminishing cuttings success. The cuttings media cocopeat (coir dust) with paddy husk gives very significant effect on root length parameter, significant on wet root weight and gave very significant effect on root dry wet. There is an interaction between the cuttings material with cutting media, for root length parameter,wet root weight and dry root weight.
POTENSI SIMPANAN KARBON DI ATAS PERMUKAAN TANAH TEGAKAN Acacia nilotica L. (Willd) ex. Del. DI TAMAN NASIONAL BALURAN, JAWA TIMUR Istomo Istomo; Nur Eliya Farida
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 7 No. 2 (2017): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.7.2.155-162

Abstract

Acacia nilotica is an invasive species which is difficult to eradicate up to present.  A. nilotica is a fast growing species of savanna tree, and therefore is supposed probably to have relatively high biomass and carbon content.  The objective of this research was to develop allometric equation of biomass and estimating the carbon storage potential in A. nilotica stand in Baluran National Park.   This research used destructive method on 9 sample trees to construct allometric equation. For measuring biomass potency, vegetation analysis was conducted using 3 plots, measuring 100 m x 100 m each on the basis of A nilotica stand density categorization (high, medium, and low).  For obtaining data of carbon potency, biomass value was multiplied with 0,47.  Research results show that the selected allometric equation for tree total is W=0,34 D1,97 with R2of 98,4. Average biomass potency was as large as 25 tons/ha.   Average carbon potency was 11,92 ton/ha.   Management of A. niloticain Baluran National Park, in moderate and low density stand can be in the form of clear cutting, whereas high density stand can be maintained for carbon sequestration and utilization by the people community for supplying seeds, livestock feeds, firewood or charcoal briquette.
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 Irwansyah, Muh Yosrilrafiq 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