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Struktur makroskopis dan mikroskopis fosil kayu asal Desa Bangun Rejo, Kabupaten Kutai Kartanegara Mia Maulida; Nani Husien; Agus Sulistyo Budi; Erwin Erwin; Ahmad Aryanto
ULIN: Jurnal Hutan Tropis Vol 6, No 1 (2022)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (674.335 KB) | DOI: 10.32522/ujht.v6i1.6195

Abstract

Tujuan penelitian ini untuk mengetahui stuktur Makroskopis dan Mikroskopis fosil kayu yang ditemukan di Desa Bangun Rejo, Kabupaten Kutai Kartanegara. Pengamatan struktur makroskopis meliputi warna, kekerasan dan berat jenis, sedangkan pengamatan mikroskopis (struktur sel) fosil kayu dilakukan melalui tiga bidang yaitu bidang Transversal (X), Tangensial (T), dan Radial (R) dengan menggunakan Stereo Microscope NIKON SMZ 645 dan Research Microscope Eclipse E400 yang dilengkapi Kamera Nikon. Sel yang dihitung meliputi sel pori (diameter, tinggi dan jumlah sel), sel jari-jari (tinggi, lebar dan jumlah sel, dan persentase sel. Kekerasan dihitung dengan menggunakan alat uji batuan yaitu Diamond selector II, sedangkan berta jenis menggunakan perhitungan standar umum yaitu perbandingan antara massa dan volume benda. Hasil penelitian menunjukkan bahwa secara mikroskopis kedua sampel fosil kayu yang ditemukan adalah fosil Hardwood atau kayu daun lebar yang jenisnya belum diketahui, dengan ciri-ciri memiliki pori, yang kebanyakan terdiri dari pori soliter, jari-jari uniseriate dengan susunan heterogen. Hasil pengamatan makroskopis fosil kayu pada sampel FKM1 memiliki warna coklat gelap, coklat muda dan campuran merah, sedangkan Sampel FKM memiliki warna coklat muda, kuning dan coklat tua. Nilai kekerasan kedua fosil kayu 4 skala mohs dan berat jenis masing=masing sebesar 3,25 dan 3,04
Ciri Makroskopis, Kekerasan dan Berat Jenis Fosil Kayu Asal Desa Purwajaya Kutai Kartanegara Robin Sulistyo; Nani Husien; Erwin Erwin; Agus Sulistyo Budi
ULIN: Jurnal Hutan Tropis Vol 5, No 1 (2021)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (622.563 KB) | DOI: 10.32522/ujht.v5i1.5408

Abstract

The results showed that macroscopically the studied wood fossils had brick red, gray, yellow, brown, and black in the first sample (FKA), and the second sample (FKB) had white, gray, and light brown colors, which this color difference was probably due to the cells being mixed with other inorganic elements even though they were found in adjacent locations. Another observation of the macroscopic features of the two samples indicated that cells were still obviously visible as on normal wood, such as pores, rays, and axial intercellular canal. Based on the characteristics of AIC, it was found to have general features that were often found in several types of wood in the Dipterocarpaceae family. The results of measuring the hardness value, the two fossil samples have the same hardness value, namely 4 Mohs scale. For the meantime, the specific gravity of the FKA and FKB samples were 2.54 and 2.35, respectively. 
Literasi Warga Desa Purwajaya, Terhadap Temuan dan Pemanfaatan Fosil Kayu Nani Husien; Erwin; Agus Sulistyo Budi; Edy Budiarso; Zainul Arifin; Sujiman Kasnadi
ABDIKU: Jurnal Pengabdian Masyarakat Universitas Mulawarman Vol. 1 No. 1 (2022): ABDIKU : Jurnal Pengabdian Masyarakat Universitas Mulawarman
Publisher : Fakultas Kehutanan dan Lingkungan Tropis, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/abdiku.v1i1.42

Abstract

This activity intends to educate residents of Purwajaya Village with information, education, and awareness about the value of finding wood fossils in their area, and also provide input on the uses that can be made by the local residents who live near wood fossil finds. The discovery of the world's longest fossil wood log in Purwajaya Village, as well as in several other villages, attracts precious stone hunters and dealers who wish to dig up these historical natural resources assets to trade. If this trend continues, Borneo's botanical diversity would eventually decline. Most of the people are unaware of the hidden assets found in their village, namely fossil wood, and they are uninformed of the rewards they will receive if these assets are properly handled. The program took place in residential areas close to where the wood fossils were discovered, and it was entirely interactive. The activity stages include the presentation of wood fossils and continued discussions with residents. The results of the activity showed that the community's curiosity is very high, especially the people of Purwajaya Village towards the wood fossils found in their village, their history and its use. The activity went well, especially for the villagers as the participants from the Marga Mulya hamlet farmer group, Purwajaya Village. This can be seen from the discussion and the desire for similar activities to be carried out in the form of the practice of how to utilize fossil wood in the future.