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Sushardi
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Keragaman Sifat Anatomi Kayu Sengon dan Kemungkinan Penggunaannya sebagai Bahan Furniture Sushardi; Bowo Woesono, Hastanto; Hadi, Didik Surya
Jurnal Wana Tropika Vol 12 No 2 (2022): November
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v12i02.295

Abstract

The development of modern industries has demanded ever-increasing usage requirements for wood products. The use of wood will be more effective and efficient if the properties of wood are known beforehand. This study aims to determine the anatomical diversity of sengon wood and its possible use as a raw material for furniture. This study used a randomized block design with Tukey's follow-up test. The factor used consisted of the radial direction of wood (wood near the skin and wood near the heart). Parameters observed were the proportion of fiber cells (%), the proportion of vessel cells (%), the proportion of parenchyma cells (%), and the proportion of radius cells (%). The results showed that the wood near the skin and near the heart of sengon had variations in the proportion of fiber cells, the proportion of vessel cells, the proportion of parenchyma cells and the proportion of radius cells. The average value of the anatomical diversity of sengon wood in the radial direction is the proportion of fiber cells 49.02 - 50.24 %, the proportion of vessel cells 23.22 - 24.23 %, the proportion of parenchyma cells 13.47 - 14.57 %, the proportion of finger cells finger 11.53 - 13.39 % and . Sengon wood can be used as furniture material for light buildings or for artificial boards because it has a high proportion of fibers.
Perbaikan Sifat Perekatan Kayu Sengon dengan Perlakuan Permukaan Sushardi; Hadi, Didik Surya
Jurnal Wana Tropika Vol 13 No 1 (2023): Mei
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/jwt.v13i1.595

Abstract

The usage in the types of wood as the raw material of industry should be appropriate with the basic nature of wood in order to produce the forest’s product with good quality. This research was aimed to : 1) learn the relationship between the different parts of wood and the treatment of surface toward glue’s nature of sengon wood and find out the factors that were most influenced, 2) Handle the weak of glue’s strength because of the influence in a part of gubal and teras wood with the treatment of the surface. The design of this research used the factorial experiment arranged in the design of completely random, with the continuing Turkey test. The factor used in this research consisted of part of the wood (gubal and teras wood) and the treatment of the surface (without treatment, NaOH, ethanol, and alcohol bensen). The observed parameter included the density, the glue’s strength, and the damage to wood because of dry and wet air. The result of this research indicated glue’s nature was really most influenced by the part of the wood and the treatment of the surface. The average rate in the best nature of glue for sengon wood was produced in the part of teras wood, namely the glue’s strength in the dry air, the wood damage in dry air, the strength of wet glue, the damage of wet wood were 42,50 kg/cm2, 80,25 %, 23,61 kg/cm2, 44,92. The average rate in the best nature of glue for sengon wood was produced in the treatment of alcohol bensen, namely the glue’s strength in dry air, the wood damage on dry air, the strength of wet glue, and the damage of wet glue were 43,47 kg/cm2, 87,513 %, 24,375 kg/cm2, and  48,62 %.
The Periodic Carbon Stock Calculation and Monitoring of Flora and Fauna of the Watershed Rehabilitation Area of PT Asmin Bara Bronang: The Periodic Carbon Stock Calculation and Monitoring of Flora and Fauna of the Watershed Rehabilitation Area of PT Asmin Bara Bronang Soebagiyo, Siti Maimunah; Sushardi; Galang Indra Jaya; Suwito Setyo Budi; Hasan Mudzakir; JH Samek
TROPICAL WETLAND JOURNAL Vol 11 No 2 (2025): Tropical Wetland Journal
Publisher : Postgraduate Program - Lambung Mangkurat University (ULM Press Academic)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/twj.v11i2.145

Abstract

Watershed rehabilitation is an important effort in restoring natural conditions, especially along river flows for conservation efforts. Observations are still being made on permanent plots observed from 2020 for 250ha with 51 permanent plots were made spread evenly with a plot size of 20x20meters. The sampling intensity taken for this periodic observation was 0.816% using a carbon and biodiversity calculator from Michigan State University 2018. The results of the 2024 monitoring show that there is an increase in the amount of carbon by 21,069tons of carbon in all permanent plots in the area and an increase in the total carbon dioxide equivalent in the area of 77.26tons of carbon increased from 2020 and on each hectare of the area there is an increase in the amount of carbon over a period of one year. The increase trees species in the area is known to have 15 species, with the Menhinnick index 0.5; Margalef's index 2.; Shannon diversity indices 1.48; Simpson diversity indices 0.71; The frequency appears of species 0.55. The types of wildlife found of direct encounters, nests, footprints, feces, voices and feathers, were directly found orangutan, deers, birds, bears, and wildboars.
Co-Authors Bowo Woesono, Hastanto Damayanty, Dhewy Galang Indra Jaya Ganis Lukmandaru Gustomo K., L. Surya Hadi, Didik Surya Hasan Mudzakir JH Samek Kodi, Hala Pamungkas, Muhammad Bagas Purwanto, Muhammad Amir Siman Suwadji, Hastanto BW dan Didik Surya Hadi Soebagiyo, Siti Maimunah Suwadji, Siman Suwito Setyo Budi T.A. Prayitno Wisnu Wardana, Wisnu Woesono, Hastanto Bowo Y. Suranto Yuniarto