Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal Jurnal Silvikultur Tropika (JST) Agrifor : Jurnal Ilmu Pertanian dan Kehutanan
Abubakar M Lahjie
Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Energy Environmental Science Social Sciences

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
ANALISIS TITIK IMPAS PEMBUATAN SIRUP PEDADA (Sonneratia caseolaris L) POJOK SADAR WISATA TIRAM TAMBUN DI KELURAHAN MENTAWIR Rochadi Kristiningrum; Abubakar M Lahjie; Yosep Ruslim; Wulan I R Sari
Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Vol 20, No 1 (2021): Maret 2021
Publisher : Universitas 17 Agustus 1945 Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31293/agrifor.v20i1.4927

Abstract

Pemanfaatan hasil hutan mangrove di Kelurahan Mentawir masih sangat terbatas. Salah satu jenis mangrove yang bisa dimanfaatkan untuk kebutuhan pangan adalah jenis Sonneratia caseolaris L) atau pedada. Jenis ini bisa dimanfaatkan sebagai bahan pembuatan sirup, dodol/jenang mangrove, roti atau bedak dingin agar memiliki nilai tambah secara ekonomis bagi masyarakat sekitar ekosistem mangrove. Tujuan penelitian ini adalah untuk mengetahui cara pembuatan sirup mangrove, mengetahui besarnya biaya  dan titik impas usahanya bagi Pojok Sadar Wisata Tiram Tambun di Kelurahan Mentawir. Pengambilan sampelnya menggunakan purposive sampling yaitu kepada pojok sadar wisata tiram Tambun. Metode penelitianya secara dekriptif kualitatif, analisis biaya,  pendapatan dan Break even point dengan jumlah produksi 100 botol dan 300 botol. Proses pembuatan sirup pedada (S. caseolaris L) meliputi persiapan alat dan bahan, pencucian buah pedada, penghancuran/penumbukan, pengambilan sari buah pedada, pemasakan/perebusan, pendinginan dan pengemasan sirup dalam botol. Biaya tetap pembuatan sirup  sebesar Rp.750.00 per periode baik untuk produksi 100 dan 300 botol. Sedangkan biaya variabel untuk 100 dan 300 botol berturut-turut sebesar Rp.942.000 dan Rp.2.272.800 selama satu periode. Titik impas quantity dan harga pada produksi sirup 100 botol berturut-turut sebesar 71 botol dan Rp.14.178. Sedangkan titik impas quantity dan harga pada produksi sirup 300 botol berturut-turut sebesar 89 botol dan Rp.4.748. Hal ini berarti produksi sirup 300 botol lebih menguntungkan daripada memproduksi 100 botol.
Analisys of round wood production and profit sharing of Shorea leprosula and Shorea smithiana at PT Inhutani I Bukit Bangkirai Balikpapan Moises Soares; Abubakar M Lahjie; BDAS Simarangkir; Yosep Ruslim
Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Vol 18, No 1 (2019): Maret 2019
Publisher : Universitas 17 Agustus 1945 Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31293/af.v18i1.3935

Abstract

This study investigated the roundwood production and profit sharing for Shorea leprosula and Shorea smithiana in case of PT Inhutani I Bukit Bangkirai, Balikpapan. Five research aims pursued in order to better understand the economic valuation of Shorea tree species, are: 1) analyse the increments of woody; 2) identify the age of trees reached the highest increments of woody; 3) measure the highest value of mean annual increments (MAI); 4) examine the nominal rate of return (i) for roundwood production; 5) examine the profit sharing between the management of  PT Inhutani I Bukit Bangkirai and investors. Additionally, the policy of profit sharing has been determined by the proportion of 55% for investors and 45% for the management.The results demonstrated that: 1) the wood potential of Shorea leprosula reached the highest value at the age of 40 years by producing 7.78 m3 ha-1 year-1, and Shorea smithiana reached the highest value at the age of 50 years by producing 333.34 m3 ha-1 year-1; 2) the highest value of MAI for Shorea leprosula and Shorea smithiana are 7.78 and 6.67 m3 ha-1 year-1 respectively; 3)  the nominal rate of return (i) of Shorea leprosula is 7.8% for investors and 8.3% for the management, and Shorea smithiana is 6.3% for investors and 6.7% the management. Overall, this research found that the economic value of Shorea leprosula and Shorea smithiana provide the nominal rate of return (i), which is higher than minimum acceptable rate of return (MAR).
ANALYSIS BIOECONOMY, GROWTH AND RECOVERY STANDS FELLING FORESTS BASED ON LOCAL WISDOM IN PENAJAM PASER UTARA REGENCY EAST KALIMANTAN PROVINCE Ahmad Yamani; Abubakar M Lahjie; B D.A.S Simorangkir; Rochadi Kristiningum
Jurnal Silvikultur Tropika Vol. 7 No. 3 (2016): Jurnal Silvikultur Tropika (Suplemen Desember)
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.S1-S3

Abstract

The purpose of this research are 1) to find out the increment of former forest of dipterocarpaceae and non dipterocarpaceae, 2) to know the increment of dipterocarpaceae as recovery plant at PT ITCI Kartika Utama, East Kalimantan Province, RSSI or Indonesia restoration silvicultural system as a method. The object of this research are the increment of dipterocarpaceae and non-dipterocarpaceae, while as the recovery plant is Shorea johorensis (plot A) and Dryobalanops aromatic (Plot B). The research method used theory production and increment (CAI and MAI). The data got since 2004. It was at the age 10 years while conducted predictions and simulation at the age 50 years. Simulation and production analysis used linier regression method. The result of this research showed increment od dipterocapaceae is 1.33 m³/ha/y (plot A),1.28 m³/ha/y( plot B), and the increment of non dipterocarpaceae is 1.49 m³/ha/y (plot A),1.36 m³/ha/y (plot B) at the age 30 years after logging, meanwhile the increment of recovery plant is 3.6 m³/ha/y (plot A), 2.45 m³/ha/y (plot B) at the age 40 as long as cultivation. The value of bioeconomy and the environment based on local wisdom is 35%. It is higher than market price or goverment price license. It means the value of DR and PSDH should be high because market price is not match with refund of environmental services. Key words: Bio economy, Growth, Logged, Recovery
Co-Authors Ahmad Yamani B D.A.S Simorangkir BDAS Simarangkir Moises Soares Rochadi Kristiningrum, Rochadi Rochadi Kristiningum Wulan I R Sari Yosep Ruslim