Kandungan Kadar Air (H₂O) Dari Jenis Kayu Jati (<i>Tectona grandis</i>) Dan Kayu Sengon (<i>Paraserianthes falcataria</i>) Asal Tobelo Kabupaten Halmahera Utara

Abstract

Copyright© Oktober 2019 AGRIKANAbstrak. Pengetahuan yang terbatas tentang sifat fisika kayu (kadar air dan jenis berat), sementara kayu sangat potensial dengan berbagai jenis dan memiliki karakter dan vareabilitas beragam maka sangat perlu diteliti sifat-sifat kayu, sehingga kita dapat mengetahui kemampuan kayu untuk penggunaannya menyangkut higrokofisitas (kemampuan) kayu menyerap dan menghilangkan air), kerapatan sehingga penggunaannya bisa dimanfaatkan secara lebih luas. Penelitian ini bertujuan untuk mengetahui tingkat penyerapan kadar air pada pohon jati dan sengon asal Tobelo Kabupaten Halmahera Utara. Hasil penelitian ini diharapkan: 1). Dapat memberikan data dan informasi ilmiah tentang penyerapan kadar dari kayu keras dan kayu lunak kepada dunia akademik, komunitas, pemerintah untuk menambah pengetahuan dan wawasan dalam pengelolaan. 2). Menjadi pedoman untuk menentukan jenis vegetasi yang memiliki tingkat penyerapan H2O yang tinggi untuk melakukan tindakan rehabilitasi di daerah yang sudah mengalami kerusakan. Hasil penelitian menunjukan bahwa nilai rata-rata kadar air pada kayu sengon bagian pangkal 38,485 %, tengah 36,412 % dan ujung 38,162 %. Pada kayu jati nilai rata-rata pada bagian pangkal 56.406 %, tengah 58,463 % dan ujung 51,045 %. Hasil penelitian menunjukan bahwa yang memberikan pengaruh nyata terhadap kandungan air yaitu jenis pohon dengan nilai sig sebesar 0,004 lebih kecil dibandingkan dengan α 0,05.Abstract. Limited knowledge about the properties possessed by wood is the physical properties of wood. While potential wood with various types and varying character and vareability, it is very necessary to examine the properties of wood so that we can find out the ability of wood for its use concerning the hygrokoficity of wood, density so that its use can be utilized in a wider way. This study aims to determine the level of absorption of water content of teak and sengon trees from Tobelo. The results of this study: 1). Can provide scientific data and information about the absorption water of teak wood and sengon to the academics, community, government to get knowledge and insight in the management of wood lately suffered damage due to various factors,. 2). Be a guideline to determine the type of vegetation that has a high H2O absorption rate of water to carry out rehabilitation measures in areas that have been damaged. The result showed that the average value of water conten in sengon wood at the base was 38,485%, middle 36,412%, and tip 38,161%. Teak wood the average value is at the base 56,406%, middle 58,463% and tip 51,045%. The result showed that the real effect on water content was the type of tree with a sig value of 0,004 smaller than α 0,05.

The Moisture Content and Absorption Levels of Carbon Dioxide in Binuang Bini (Octomeles sumatrana Miq) Trees For Climate Change Management

“…Jurnal Manajemen Hutan Tropika, 27(3), 143-151, December 2021EISSN: 2089-2063 The formula for calculating biomass is shown in Data collection and analysis The early stages of field observation for sample determination of O. sumatrana were examined through laboratory analysis using three sample trees with a diameter at breast height (d.b.h) of 9.24 cm, 10.08 cm, and 11.68 cm and consecutive branch-free rods of 3 m, 3.5 m, and 3.5 m, respectively obtained from the City of Tobelo. Their moisture content and biomass were determined by taking the root components, stems, twigs, leaves as samples with American Standard Testing Material (ASTM D143, 1994; Kailola et al, 2019) and measuring the wet weight. Furthermore, it was inserted into the oven-dry kiln at a temperature of 100 ± 3 °C until it was constant before obtaining the dry weight.…”

Utilization of Wood Vinegar as a Natural Preservative for Sengon Wood (Falcataria moluccana Miq.) against Fungal Attack (Schizophyllum commune Fries)

“…The process of cell wall formation occurs at the bottom towards the middle and end of the stem. The cell wall at the bottom is thicker than the middle and top (Kailola et al 2019). The MC of sengon wood is highly correlated with the preservative retention, absorption, and penetration because the MC of sengon wood is high, and it could prevent the entry of preservatives into the wood because the microvoid in the cell wall and cell cavity contains water (Usta 2004).…”