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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Penelitian Hutan dan Konservasi Alam Proceeding International Conference on Global Resource Conservation Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) BERITA BIOLOGI Jurnal Hutan dan Masyarakat Biosaintifika: Journal of Biology & Biology Education Jurnal Agrotek Lestari Jurnal Pusat Inovasi Masyarakat Jurnal Sylva Lestari JURNAL HUTAN TROPIS Jurnal Ilmu Kehutanan Jurnal Riset Multidisiplin Edukasi
Iwan Hilwan
Department Of Silviculture, Faculty Of Forestry, Bogor Agricultural University, Bogor, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Energy Environmental Science Health Professions Materials Science & Nanotechnology Social Sciences Other

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Growth Respond of Three Tree Species on Tailing of Quartz Sand, Mined in East Belitung Regency RESPON PERTUMBUHAN TIGA JENIS TANAMAN PADA MEDIA TAILING BEKAS PENAMBANGAN PASIR KUARSA DI KABUPATEN BELITUNG TIMUR Iwan Hilwan
Jurnal Silvikultur Tropika Vol. 6 No. 2 (2015): 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.6.2.%p

Abstract

Quartz sand is the main component of soil in heath forest floor which is very fragile in respond to any disturbance. The damaged heath forest after quartz sand has been mined, was very difficult to restore. Therefore, study on biophysical characteristics of primary and secondary heath forest are very important for improving forest rehabilitation efforts. After that, identification of tree species which is most suitable for the site in the rehabilitation program is very urgent. The research results showed that white jabon (Anthocephalus cadamba (Roxb.) Miq.) exhibited the greatest increase in height , diameter and dry weight (biomass). Therefore, white jabon is the best choice for rehabilitation on tailing of former quartz mined area. Planting media which are composed of tailing and organic matter (compost) is the best media for tree growth in rehabilitation program. The research results can serve as one of the guidances for stakeholders to manage heath forest in East Belitung Regency and as reference for rehabilitation activities.Key words: quartz sand, rehabilitation, tailing, white jabon
Adaptability Trial of Paspalum conjugatum Berg, Setaria splendida Stapf and Vetiveria zizanoides (L.) Nash on Aluminum Toxicity UJI ADAPTABILITAS Paspalum conjugatum Berg, Setaria splendida Stapf, DAN Vetiveria zizanoides (L.) Nash PADA TOKSISITAS .... Jenny Rumondang; Yadi Setiadi; Iwan Hilwan
Jurnal Silvikultur Tropika Vol. 7 No. 3 (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.7.3.211-216

Abstract

Quartz sand mining operated by PT Holcim creates the soil minerals such as aluminum (Al). Setiadi (2012) explained that Al > 3 me/100 g soil is a toxic. Problem safter mining operational PT Holcim Tbk are: 1) Al toxicity. 2) soil compaction; 3) Ca < Mg which lead to stagnant growth. The presence of Al affected root growth, signed by swelling and browning root. Reducing Al concentration needs expensive cost. Thus, other biological alternatives which more effective and cost less are needed.This research objective was to observe plant growth at media which consist of Al toxicity. Using of Paspalum conjugatum, Setaria splendida, and Vetiveria zizanoides where use as plant indicator. The treatment were concentration of micro lime and humic substances complex. The experiment conducted at factorial design.. The resulted shows performances of three grass species planted in tailing soil gave varied result. P. conjugatum was more sensitive to Al than two others, where as S. splendida and V. zizanoides were more adaptive to Al. S. splendida can reduced Al until 61.23% and combination V. zizanoides with lolime 3g/L + HSC 2.5% can reduced Al 60.03%. V. zizanoidesis and S. splendida were potential for phytoremediation (plant which can reduce toxicity in soil).Key words: Alumunium, P. conjugatum, S. splendida, V. zizanoides
RESPON PERTUMBUHAN BIBIT ANGSANA (Pterocarpus indicus Willd.) TERHADAP MEDIA TUMBUH, PEMOTONGAN AKAR LATERAL DAN PEMBERIAN URIN SAPI Response of Angsana (Pterocarpus indicus Willd.) Seedling on Growing Media, Lateral Roots Cutting, and Cow’s Urine Hariadi Saputra; Yadi Setiadi; Iwan Hilwan
Jurnal Silvikultur Tropika Vol. 8 No. 3 (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.8.3.154-159

Abstract

Nursery is a process in producing good quality seedlings. Seedling quality is determined by physical-physiological quality including woody stem, health, height, diameter, number of leaves, leaf color and compactness of media. The quality of angsana seedlings in this study was observed using some growth media, lateral root cutting, and cow’s urine addition with various concentration and liquid organic fertilizer for 13 weeks. The study was conducted in a completely randomized design (CRD) in split plot with 3 growth mediums, 10 combinations of root-cutting and fertilizing treatment using 9 seedlings per treatment. Parameters observed during this study were seedling height (cm), seedling diameter (mm), total dry weight (g), shoot - root ratio (RPA) and compactness of roots. The results showed the media contain mixture of soil and manure (M2) with root-cutting treatment, addition of 20% cow urine and 5% EM4 (A2) was the best treatment for angsana seedlings with average value of 46.25 cm plant height, 6.09 mm diameter, 7.77 g total dry weight, shoot root ratio 1.89 and compactness of roots including the compact category.Key word : cow’s urine, lateral roots cutting, Pterocarpus indicus Willd., seedling quality.
POLA PENYEBARAN DAN REGENERASI JENIS SANINTEN (Castanopsis argentea Blume) DI RESORT SELABINTANA, TAMAN NASIONAL GUNUNG GEDE PANGRANGO Distribution Pattern and Regeneration of Saninten (Castanopsis argantea Blume) in Selabintana Resort, Gunung Gede Iwan Hilwan; Ewi Irfani
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.9.1.53-59

Abstract

Saninten (Castanopsis argantea Blume) known as one of Indonesian indigenous tree species that has high value. Saninten found at Gunung Gede Pangrango National Park especially Resort Selabintana. Saninten produce fruits that can be consumed and wood that can be used as building materials. Regarding these facts, this tree species needs to be cultivated. The distribution pattern of saninten is needed for the right development, but the study about ecology andnatural population of this species is rare and less known. The aim of this research was to asses potential, regeneration and the distribution pattern of saninten. The research used a combination of lanes and line method with counturs cutting. The result showed that distribution of saninten in both location is clumped. Morishita index in lower attitude was 1.68 and in upper attitude was 1.29.Key words: C. argentea, distribution, Resort Selabintana, Taman Nasional Gunung Gede Pangrango
Keanekaragaman Jenis Tumbuhan Dan Simpanan Karbon Pada Berbagai Tipe Penggunaan Lahan Di Kabupaten Pesisir Barat Provinsi Lampung Dian Ariyanti; Nurheni Wijayanto; Iwan Hilwan
Jurnal Silvikultur Tropika Vol. 9 No. 3 (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.9.3.167-174

Abstract

Vegetation is one factor that can decrease carbon accumulation in the atmosphere. The diversity of plant species in each land use has different abilities to absorb carbon in the atmosphere. This research was conducted in Pesisir Barat Regency of Lampung Province on 4 (four) types of land use, namely: (1) natural forest in Balai Kencana Resort, Bukit Barisan National Park (2) oil palm plantation in Pekon Marang, (3) coffee plantation in Pekon Suka Mulya, and (4) agroforestry of repong damar in Pekon Pahmungan. This reserach aims to analyze the diversity of plant species and to calculate the potential of plant carbon stock and carbon sequestration (above ground biomass) using alometric equations in various types of land use in Pesisir Barat Regency. The research method was vegetation analysis to learn about the diversity of plant species and calculation of carbon stock using alometric equations. The results showed that the composition of plant species in Bukit Barisan NP found 83 plant species belonging to 37 families, in the palm plantation found 9 plant species belonging to 8 families, in the coffee garden found 17 plant species belonging to 11 families, and in agroforestry of repong damar found 73 plant species belonging to 33 families. The total carbon stock potential was 376.16 ton/ha and carbon sequestrated. 1 257.20 ton/ha with the highest carbon uptake available at repong damar agroforestry site of 901.11 ton/ha.Keywords: aboveground biomass, carbon, diversity, pesisir barat regency
Respon Pertumbuhan Bibit Gmelina Arborea Roxb. Terhadap Perlakuan Media Tanam dan Biostimulan di Persemaian Permanen IPB Johan Ariando Rajagukguk; Yadi Setiadi; Iwan Hilwan; Noor Faiqoh Mardatin
Jurnal Silvikultur Tropika Vol. 10 No. 1 (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.10.1.15-20

Abstract

Nursery activities were one important step in producing quality seedling. This study used a very low quality Gmelina seed with germination value of 9.8%. This value affected the ability of plants in responding to treatment. Input technology of growing media treatment and biostimulan needed to improve the quality of seedling. Sample of media planting collected from IPB permanent nursery. Applications biostimulan was using to help increased amount of plant roots. This study used a completely randomized factorial design with 7 replications. Observations for 8 weeks after planting (MST) found the media's treatment plant and biostimulan has significant effect on the parameters of diameter, height and total dry weight compared to control. Compost was the best medium in this study who had the highest NPK value compared to other media. Biostimulan concentration of 4% was proved improving the quality of Gmelina seedling in all media by increased the compactness of the roots of seedlings. The percentage increased in root dry weight (BKA), the largest found in the media mix of compost and mud. The best treatment in improving the quality of seeds Gmelina found in compost media and biostimulan 4% on all parameters of growth.Keywords: biostimulant, root compaction, seedling quality
Karakteristik Vegetasi di Hutan Alam Dataran Rendah, Hutan Tanaman, dan Lahan Pasca Tambang Nikel di Kabupaten Bombana Purnama Ardiyansyah; Basuki Wasis; Iwan Hilwan
Jurnal Silvikultur Tropika Vol. 10 No. 3 (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.10.3.140-145

Abstract

Nickel mining in Bombana District is one of the mining activities which generates a very large income for the area. However, mining carried out continuously will certainly cause the environment to be damaged, especially soils and vegetation when mining activities end. Good management of post-mining land is one of the obligations of the mining business unit. Management can include reclamation and replanting land so that exposed land can be reforested. Reforesting ex-mining land is not easy. These efforts need to be carried out with comprehensive treatment concerning the improvement of the vegetation composition as well as the physical, chemical, and biological aspects of the soil used so that the greening plants that are introduced can adapt well. The purpose of this study is to identify and compare the characteristics of vegetation and soil in lowland natural forests, plantations and post-nickel mining in Bombana District. In this study, observations were made at three different locations to look for differences in characteristics caused by the existence of nickel mining activities. From the results of the study showed that there was a decrease in the composition of vegetation due to changes from natural forest to plantations. In addition, the level of soil fertility is also declining due to land clearing for mining. Key words : nickel, mining, Bombana, soil, vegetation
Respon Pertumbuhan Tanaman Reklamasi PT Newmont Nusa Tenggara terhadap Penggunaan Mulsa Organik Kardus Iwan Hilwan; Meida Rosani
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.11.2.109-117

Abstract

Plant growth determined factors such as environmental manipulation of seeds, including maintenance and pest disease prevention integrated. Intensive maintenance needs to be done especially when the plant is still young-old. Use organic mulch cardboard including part of plant maintenance to suppress weed competition with staple crops at a young age. In addition the use of mulch, organic boxes are expected to give positive influence against the growth of staple crops and chemical properties as well as land reclamation in soil biology. The results showed that organic mulching cardboard gives positive influence against the reclamation plant growth based on parameters of high and in diameter. The development of plants under around staple crops can be suppressed. Chemical properties of the soil showed improvement in some elements of the chemistry of the soil with organic mulch using cardboard. The diversity of types of makrofauna the soil around the plants with mulch treatments staple cardboard categories include being with Shannon's Diversity index value-Wiener of 1.57 while in treatment control categories include low value of 1.48. Keywords: cardboard mulch, plant growth, reclamation, weed
Penyebaran Jenis Jirak (Symplocos fasciculata Zoll.) di Resort Kawah Ratu Taman Nasional Gunung Halimun Salak, Jawa Barat Iwan Hilwan; Aldi Perdana Wiraatmadja
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.12.1.23-29

Abstract

Jirak (Symplocos fasciculata Zoll.) is one of the native species in the Gunung Halimun Salak National Park, especially in the Kawah Ratu resort. This plant can be used as a natural coloring agent, in addition to plant parts such as leaves can also be eaten and used as medicine. Because of the benefits of jirak, this plant is considered important to be cultivated. This study aims to analyze the density and distribution pattern of jirak (Symplocos fasciculata Zoll.) at Kawah Ratu Resort, Gunung Halimun Salak National Park. Data collection was carried out in two blocks located at the Kawah Ratu Resort of Mount Halimun Salak National Park, namely the Leles block and the Pamengpeuk block using the single plot method. The results showed that jirak distribution pattern in the two observation blocks was grouped. Keywords: Distribution, Jirak, Kawah Ratu Resort, Symplocos fasciculata Zoll., Gunung Halimun Salak National Park
Distribution of Puspa (Schima wallichii (DC.) Korth.) in Kawah Ratu Resort, Gunung Halimun Salak National Park, West Java Iwan Hilwan; Savira Nurul Aulia Rahman
Jurnal Silvikultur Tropika Vol. 12 No. 2 (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.12.2.86-94

Abstract

Puspa (Schima wallichii (DC.) Korth.) merupakan jenis tumbuhan yang mendominasi di kawasan Taman Nasional Gunung Halimun Salak terutama di Resort Kawah Ratu. Jenis puspa termasuk salah satu jenis tumbuhan dataran tinggi yang dapat tumbuh di lahan kritis. Tujuan penelitian ini adalah untuk mengidentifikasi pola penyebaran dan potensi permudaan jenis puspa (Schima wallichii (DC.) Korth.) di Resort Kawah Ratu, Taman Nasional Gunung Halimun Salak, Jawa Barat. Pengambilan data dilakukan dengan analisis vegetasi dengan metode petak tunggal seluas 1 ha pada setiap lokasi. Penelitian dilakukan di Blok Pamengpeuk dan Blok Leles. Jenis yang ditemukan pada kedua lokasi penelitian sebanyak 98 jenis. Hasil penelitian menunjukkan pola penyebaran puspa (Schima wallichii (DC.) Korth.) adalah mengelompok, baik di Blok Pamengpeuk maupun di Blok Leles. Penyebaran mengelompok menandakan adanya pertumbuhan permudaan yang baik. Kemampuan regenerasi puspa di kedua lokasi tergolong baik karena jumlah individu permudaan puspa lebih banyak dari pada individu pohonnya.. Kata kunci: pola penyebaran, Puspa, Resort Kawah Ratu, Schima wallichii, Taman Nasional Gunung Halimun Salak
Co-Authors Ade Siti Nurjannah Aldi Perdana Wiraatmadja Andesmora, Evan Vria Andry Indrawan Anggoro, Prima Anggraeni Antika, Tiara Ardiyansyah Purnama Arin Annisa Fathia Assajad, Zacky Nurrohman Azzahra, Nabilah Putri Fatimah Basuki Wasis Cahyo Wibowo Citra Rahmatia Dadan Mulyana Dhafin Maulidiyan Dian Ariyanti Dimas Prasaja, Dimas Dina Oktavia Dwi Mairida Eddy Nurtjahya Efita Karunia Harita Eko Putranti Handayani Erfanda Irawan Ewi Irfani Faadhila, Intan Hanifa Ghvirly Ramadhani Hariadi Saputra Haryantini, Baiq Azizah Hendriyana Rachman Henti Hendalastuti Rachmat IBNUL QAYIM Idealisa Masyrafina Ihsan Noor Irdika Mansur Istomo . Jenny Rumondang Johan Ariando Rajagukguk Kurniawati - Kurniawati Kurniawati, Kurniawati - Laijanan, Theresia Avilla Madja, Muhammad Daffa Nurhadi Suryadi MARIA BINTANG Maulidil Fajri Meida Rosani Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono Muhadiono, Muhadiono Mulyanto, Naufal Rafa Noor Faiqoh Mardatin Noor Farikhah Haneda Nur Mufarhatun Nurheni Wijayanto Nuroh Bawaihaty Rana Rio Andhika, Rana Rio Ria Astuti Rifaldo, Akhmad Sabila, Siska Aisyah Sethyo Vieni Sari Siahaan, Lasriama Siddiq Nurkholis Siti Nahla Supriyanto Teddy Rusolono Utami, Desty Sasana Putri Weda Gelar Pananjung Yadi Setiadi Yadi Setiadi YANTO SANTOSA Yentiana, Retno Ayu Yuda Purnama Yudi Setiawan Yustika Fadilah Siregar Zahrani, Alifia Sasky