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ULIN: Jurnal Hutan Tropis

UJHT
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Published by Universitas Mulawarman

ISSN : 25991205 EISSN : 25991183 DOI : -

Core Subject : Social,

Environmental Science

ULIN: Jurnal Hutan Tropis published by Forestry Faculty of Mulawarman University, which is published twice a year in March and September with p-issn 2599-1205 and e-issn 2599-1183. It contains articles of research or study of literature in the field of Forest Management, Forest Conservation, Silviculture, and Forest Product. Language used for full article in this journal is Bahasa Indonesia, abstract in English and Bahasa Indonesia.

Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)

Articles 242 Documents

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Estimasi Cadangan Karbon Pada Tumbuhan Bawah dan Serasah Di Hutan Pendidikan dan Penelitian Fakultas Kehutanan Universitas Mulawarman Samarinda Wahjuni Hartati; Ali Suhardiman; Triyono Sudarmadji; Eko Adi Sulistiyo
ULIN: Jurnal Hutan Tropis Vol 5, No 2 (2021)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Three slopes of 100 m long are defined in young secondary forest with gentle and slightly steep slopes. In each part of the slope, we built 1 (one) PUP of 20m x 20m which is consisted of 3 (three) Sub PUPs of 10m x 10m to represent the density of sparse, medium, and dense understorey and 1m x 1m of sub-PUPs for litter harvesting. In 18 (eighteen) PUPs, each 54 (fifty-four) Sub PUPs and Sub sub PUPs, were made in this study. The HPFU area is dominated by young secondary forest coverage with gentle and slightly steep slopes. The C reserves of the herbaceous understorey are more significant than that of woody plants. C reserves of all components studied in the gently sloping area are larger than the steep ones. The largest C reserves are found in leaf litter for all slope positions except for a slightly steep lower slope. The largest C reserves is found in finer litter. The total C reserves of understorey and young secondary forest organic litter in HPFU 933.4 tons and 95.9 percent are stored in a litter.

KEMATIAN TANAMAN GAHARU AKIBAT SERANGAN Heortia vitessoides Moore DI MUARA KEMBANG, KUTAI KERTANEGARA Ngatiman Ngatiman; Erwin Erwin
ULIN: Jurnal Hutan Tropis Vol 4, No 2 (2020)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Gaharu (Aquilara microcarpa Baill) planted in monoculture in 2008 at Muara Kembang, Kutai Kartanegara was attacked by Heortia vitessoides Moore which resulted in the death of the plant. To explain the phenomenon of plant death, this research was conducted by observing the frequency and intensity of attacks, the effect of spacing, and pattern of pests as well. Observations were made on a 100 x 50 m striped plot with two spacing arrangements of 3 x 2 m and 2 x 2.5 m. The difference in attack frequency of H. vitessoides between the two spacing was analyzed statistically using t-test. Plant mortality with a high frequency and intensity of pest attack occurred in the 3 x 2 m spacing of the area with a monoculture planting system. Monoculture planting systems triggered patterns of attack and behavior of pests attacking throughout the year with a large number of larvae so they can eat all plant leaves. It is recommended that a mixed planting system be applied to gaharu with other useful plant species as well as to prevent and control it early if H. vitessoides pests are found before it spreads that cause plant death.

Bio-Induksi Ranting Cabang Gaharu (Gyrinops versteegii) Di Perkebunan Gaharu Desa Pejaring Lombok Timur I Gde Adi Suryawan Wangiyana; Efendi Iskandar
ULIN: Jurnal Hutan Tropis Vol 5, No 2 (2021)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Bio-induction on the branch of agarwood tree (Gyrinops versteegii) is a good alternative method to increase resin productivity. The aim of this research is to applied bio-induction on the branch of G. versteegii with different diameters. Different branch diameter was the treatment on this research including branch 1 (diameter 70 mm ± 5 mm), branch 2 (85 mm ± mm), branch 3 (100 mm ± mm). Fusarium solani isolate of Institute for Technology Research and Development of Non-Timber Forest Product was used as a bio-induction agent. This isolate was cultured on bean sprout broth media for 28 days. Bio-induction was carried using standard procedure developed by Forest Research and Development Agency. Observation of the result conducted 3 months after bio-induction. There were 3 parameters of bio-induction result including resin area production, discoloration in form of browning on branch, and fragrance level of resin. Branch 2 has the largest resin area production. However, branch 3 has the highest score of browning and fragrance level. This result indicated a correlation between browning on branch and fragrance level quality. It could be concluded that bio-induction on larger branch diameter could produce higher productivity of resin, especially on browning and fragrance level parameter

Penggunaan Citra DEMNAS untuk Desain Pola Tanam Alley Cropping pada Lahan Garapan Anggota KPPH Talang Mulya Kabupaten Pesawaran Provinsi Lampung Trio Santoso; Machya Kartika Tsani; Surnayati Surnayati; Melya Riniarti
ULIN: Jurnal Hutan Tropis Vol 5, No 1 (2021)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Talang Mulya KPPH farmers has been applying agroforestry system for their land cultivation, but the cropping pattern applied has not been adapted to its sloping conditions and plant spacing which result on non-optimal yields produce. Alley Cropping pattern consider as the most suitable approach. Current analysis can be carried out using mapping techniques and remote sensing using digital elevation data imagery. The DEMNAS imagery was used in this study, results showed that the mean altitude reached 396.67 masl and land slope reached 20.92% in average. The design of the cropping pattern using 1 meter height intervals shows the results of the number of planting arrays of 31.96 strips with 3,564.96 meters in length which is higher than the land with a height interval of 2 meters which results in a total of 10.6 strips with and 942.97 meter lengths. However, the field of agricultural cultivation that can be formed on land with 1 meter height intervals only reaches 4.94 meters, while at 2 meters height intervals it can reach 16.03 meters.

Kualitas Air pada DAS Bugis dan DAS Wain di Kawasan Hutan Lindung Sungai Wain Balikpapan Sri Sarminah; Dyna Raya Anugerah; Marlon Ivanhoe Aipassa; Agus din
ULIN: Jurnal Hutan Tropis Vol 4, No 2 (2020)
Publisher : Fakultas Kehutanan Universitas Mulawarman

This study aims to determine the latest water quality conditions in terms of physical, chemical and biological properties in the DAS Bugis and DAS Wain. Analysis of water sample was conducted at the Water Quality Laboratory of the Department of Aquatic Resources and Fisheries and Marine Sciences, Mulawarman University, Samarinda. Data analysis refers to the Water Quality Standards based on East Kalimantan Regional Government Regulation No. 02/2011 about Management of Water Quality and Water Pollution Control. The results showed that the parameters of temperature, colour, TSS, TDS, BOD5, SO4 and NO3 were included in the Class I water quality standards that can be used as drinking water or for other consumption purposes. COD parameters (in the Right River Basin), DO and NH3 (in the River Basin) were included in Class II water quality standards, which can be used for water recreation infrastructure / facilities, freshwater fish farming, animal husbandry and plants irrigation. The pH parameters in the DAS Bugis were included in class IV water quality standards that can only be used to irrigate plants. Pollutant loads that contribute a lot to enter were agricultural and agricultural waste and domestic waste originating from community forest areas.

Biomassa dan Cadangan Karbon Tiga Jenis Tumbuhan Herba (Cyclosorus interruptus, Nephrolepis biserrata, dan Digitaria didactyla) pada Periode Penyiangan Berbeda Eni Susanti; Karyati Karyati; Muhammad Syafrudin
ULIN: Jurnal Hutan Tropis Vol 5, No 2 (2021)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/ujht.v5i2.3638

The weeding duration influences the biomass and carbon content of herbaceous species. The objective of this study was to analyze the biomass and carbon content of three herbaceous species (Cyclosorus interruptus, Nephrolepis biserrata, and Digitaria didactyla) in terms of different wedding durations. The biomass of Cyclosorus interruptus that weeded for 2, 3, and 4 weeks were 26.50 grams, 35.50 grams, and 27.00 grams in a study plot sized 12 m2. Nephrolepis biserrata had biomass of 15.38 grams (weeding period of 2 weeks), 15.28 grams (weeding period of 3 weeks), and 19.90 grams (weeding period of 4 weeks). The biomass content of Digitaria didactyla were 76.67 grams, 74.00 grams, and 190.00 grams for weeding periods 2, 3, and 4 weeks, respectively. The carbon content of Cyclosorus interruptus with weeding periods of 2, 3, and 4 weeks were 0.062 tons/ha, 0.056 tons/ha, and 0.032 tons/ha, respectively. Nephrolepis biserrata had carbon contents of 0.067 tons/ha, 0.051 tons/ha, and 0.050 tons/ha in weeding periods 2, 3, and 4 weeks. Digitaria didactyla with the highest carbon content was weeded every 4 weeks (0.223 tons/ha), compared to weeding periods of 2 weeks (0.180 tons/ha) and 3 weeks (0.116 tons/ha).

Pertumbuhan Ulin (Eusideroxylon zwageri Teijsm & Binn.) dari Beberapa Provenans Di KHDTK Samboja, Kalimantan Timur Burhanuddin Adman; Mira Kumala Ningsih; Teguh Teguh; Zainal Arifin; Yustinus Iriyanto; Dwi Wahyu Mentari; Nanda Farhazakia
ULIN: Jurnal Hutan Tropis Vol 5, No 1 (2021)
Publisher : Fakultas Kehutanan Universitas Mulawarman

The high conservation status of ironwood (Eusideroxylon zwageri Teijsm & Binn.) causes conservation efforts need to be carried out immediately. Balitek KSDA has carried out ulin conservation efforts by building ulin ex-situ conservation plots in the Samboja KHDTK with seeds from the Sungai Wain, Sangatta and Berau. This study was conducted to evaluate the variation of ironwood plant growth from these three provenances in the Samboja KHDTK. The results showed that the average survival rate of ironwood plant was 79.12% and there were no differences in the three provenances. Plants from Sangatta have the best height and diameter growth compared to the Sungai Wain and Berau, which is 83.48 cm and 0.61 cm.

Analisis Struktur dan Komposisi Vegetasi Tumbuhan Di Taman Hutan Raya Raden Soerjo Prigen Pasuruan Nia Sylviana Sari; Samsun Hadi; Rr. Eko Susetyarini
ULIN: Jurnal Hutan Tropis Vol 5, No 2 (2021)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Long drought and uncontrolled human activities resulted in R. Soerjo Prigen Pasuruan Grand Forest Park experiencing fire. Adverse impacts on vegetation can result in vegetation death. Damage caused by fire to vegetation can lead to succession which can be seen from the composition and structure of forest vegetation. The purpose of this study was to determine the effect of environmental parameters, structure and composition of plant vegetation in Tahura R. Soerjo, which were used as a learning resource for biology. This study used a purposive sampling technique. The method used is a combination of paths and checkered lines. The data analysis technique used is the Importance Value Index (INP), the dominance index, the diversity index, the wealth index, and the evenness index. The results showed that the identification of plant vegetation diversity was found as many as 33 species from 17 families that came from 3 divisions. The highest INP was found at the seedling level. The value of the dominance index is less than 1. The results show that the value of the density index is low, because it has a value of <3.5. The evenness value is at a high value, except at the tree level.

Komoditas Unggulan Potensial Jenis Empon-Empon Untuk Meningkatkan Produktivitas Hutan Rakyat Di Ciamis Jawa Barat Suhartono Suhartono
ULIN: Jurnal Hutan Tropis Vol 5, No 2 (2021)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Private forest farming has been a new source of family income for farmers in the Ciamis District. However, it has not been could to fully support the living needs of farmer families. Therefore, a strategy is needed to increase the productivity of private forest lands wich can meet the short-term and long-term needs of farmers. This study aims to identify the superior commodity types of empon-empon wich has the potential to increase the productivity of community forest lands. The study desk method was used in this research by utilizing statistical data on the production of biopharma plants in Ciamis Regency and West Java Province. To find out the superior commodities, a Location Quotient analysis approach was used. There were six types of empon-empon that have been cultivated in Ciamis Regency, including Zingiber officinale, Amomum compactum, Kaepferia galanga, Curcuma longa, Alpinia galanga, and Curcuma zanthorrhiza. Amomum compactum types is considered as a potential commodity to be developed on private forest land because it has a comparative advantage with LQ value>1.

Pengaruh Waktu Kupas dan Volume Kayu Terhadap Produktivitas dan Biaya Pengupasan Kulit Kayu Hutan Alam Sona Suhartana; Yuniawati Yuniawati
ULIN: Jurnal Hutan Tropis Vol 5, No 2 (2021)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Debarking is the activities in the loading point after bucking. The purpose of debarking is to clean wood from bark and reduce the wood moisture content to be easier for further handling. The research method was carried out by selecting the location of 2 loading points where debarking was done, measuring the debarking time and the log volume, and then analyzing the effect of debarking time and log volume on the productivity of debarking with multiple regression analysis. The results showed that: 1) The average debarking produkctivity in loading point 1 was 21.12 m3/hr an average debarking time of 25.49 minutes and log volume of 9.16 m3; 2) The average productivity of debarking in the second loading point was 20.77 m3/hr with an average debarking time of 19.45 minutes and a log volume of 6.81 m3; 3)The average of debarking cost at loading point #1 is lower than at loading point#2; 4) The resulting regression equation model is Y = 20,931.001 – 49,516.314 X1 + 2.324 X2; and 5)The log volume is significant to debarking productivity, while the debarking time is negative

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Rachmad Mulyadi

Contact Email -

Phone 0541-6525067

Journal Mail Official ulin.jhuttrop@fahutan.unmul.ac.id

Editorial Address Jl. Penajam Kampus Gunung Kelua PO. Box 1013

Location Kota samarinda, Kalimantan timur INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Rachmad Mulyadi

Contact Email
-

Phone
0541-6525067

Journal Mail Official
ulin.jhuttrop@fahutan.unmul.ac.id

Editorial Address
Jl. Penajam Kampus Gunung Kelua PO. Box 1013

Location
Kota samarinda,

Kalimantan timur

INDONESIA