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ULIN: Jurnal Hutan Tropis
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 5 Documents
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Search results for , issue "Vol 3, No 2 (2019)" : 5 Documents clear
PEMETAAN SEBARAN TINGKAT BAHAYA EROSI DI WILAYAH SUB DAS LEMPAKE Sri Sarminah; Triyono Sudarmadji; Oktavianus Surya Nata
ULIN: Jurnal Hutan Tropis Vol 3, No 2 (2019)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (663.566 KB) | DOI: 10.32522/ujht.v3i2.2873

Abstract

This research was aimed to predict the erosion hazard level based on the Universal Soil Loss Equation (USLE) formula and to create distribution mapping of erosion hazard level at Lempake sub-watershed area. This research was conducted by overlay four types of maps, i.e: rainfall, soil, slope, and land cover maps.  The results showed that the process of overlay from a topographic map, map of soil types, vegetation maps and rainfall map was 36 land units about 583.108 ha area. Annual rainfall in the sub-watershed of Lempake during about 10 years old from the year of 2008 to 2017 amounted was 2445.8 mm. The soil type of dominant was podsolik kandika bout 1724 ha area. The most of topography of the Lempake sub-watershed was dominated by the slope class of 15-25% (rather steep) which is 1218.34 ha. Land covers were dominated by shrubs with an area of 830.27 ha. An overlay process was done to get the final result, i.e. erosion hazard level prediction. The level was classified into five categories those were very light, light, medium, heavy, and very heavy. The results showed that the distribution mapping of erosion hazard level at Lempake sub-watershed area ranged from very light to very heavy, with the percentage soft he affected areas are 20.39%;10.87%; 3.93%; 36.87%, and 27.9% respectively. The results can be used as a database to make a good planning watershed area management.
KARAKTERISTIK IKLIM MIKRO DI BAWAH TEGAKAN SENGON-KACANG PANJANG DAN JABON–BUNCIS Andi Fazlur Agung Anuar; Karyati Karyati
ULIN: Jurnal Hutan Tropis Vol 3, No 2 (2019)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (462.063 KB) | DOI: 10.32522/ujht.v3i2.2919

Abstract

The combination planting of forestry and agriculture plants influence microclimate under tree stand. The objective of this study was to investigate the characteristics of microclimate (air temperature, relative humidity, and light intensity) under stands of sengon (Falcataria moluccana)-long bean (Vigna cylindrica), jabon (Anthocephalus cadamba)-bean (Phaseolus vulgaris), and open area. The measurement of climate elements was conducted three times a day, such as in the morning (06.00-07.00),  at noon (11.00-12.00), and afternoon (17.00-18.00) for 30 days by using Environment meter. The average light intensity were 533.5 lux, 534.3 lux, and 1919.7 lux under stands of sengon-long bean, jabon-bean, and open area. The average temperature under stands of  sengon-long bean was 29.9°C, under jabon-bean was 30.0°C , and in the open area was 31.2°C. The average relative humidity under stands of sengon-long bean, jabon-bean, and open area were 69.5%, 69.3%, and 67.2%, respectively.
EKSPLORASI LAPANGAN JENIS PENGHASIL GAHARU (Gyrinops verstegii) DI PULAU LOMBOK NUSA TENGGARA BARAT Sutomo Sutomo; Gebby Oktaviani
ULIN: Jurnal Hutan Tropis Vol 3, No 2 (2019)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (656.917 KB) | DOI: 10.32522/ujht.v3i2.2874

Abstract

High economic value encourages the hunt for agarwood in nature to increase and not be controlled so that the existence of agarwood becomes threatened and rare. Gyrinops versteegii (Gilg.) Domke is one example of agarwood-producing plants that are native to Indonesia and have different characteristics from other types so that it is preferred by consumers. Exploration and study of Gyrinops is very necessary, because information about Gyrinops is still very limited, especially to find out the population and its presence in nature and which has been cultivated by the community. The study of G. versteegii population was conducted in 7 locations in four districts namely West Lombok, North Lombok, East Lombok and Central Lombok conducted on 16-29 April 2018. There were 210 G. versteegii individuals found with 20 individual seedling growth stages, 54 individual saplings 98 individual poles and 38 individual trees. The location of the meeting is marked by its geographical location with the Global Positioning System (GPS). G. versteegii can be found in various environmental parameters, namely altitude 99 - 925 masl; slope 0 - 36.6 °; soil pH 5.5 - 6.6; soil moisture 50 - 95%; Light intensity 212 -> 20,000 Lux; air temperature 26.4 - 32.5 ° C and relative humidity 66.5 - 90%. G. versteegii that grows naturally can only be found at the Aikmel Resort in the Mount Rinjani National Park (TNGR) and there are only two individuals. Further exploration needs to be carried out in the area to determine the amount and conservation steps of G. versteegii remaining on the Island of Lombok.
PENINGKATAN PERTUMBUHAN MISELIUM JAMUR TIRAM (Pleurotus ostreatus) YANG DIPENGARUHI OLEH PROMOL 12 Saat Egra; Muhammad Soesilo Dermawan; Etty Wahyuni; Eko Hary Pudjiwati; Amarullah Amarullah; Dwi Santoso; Deny Murdianto; Sudirman Sirait; Hendris Hendris
ULIN: Jurnal Hutan Tropis Vol 3, No 2 (2019)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (470.486 KB) | DOI: 10.32522/ujht.v3i2.2889

Abstract

White oyster mushroom (Pleurotus ostreatus) is a mushroom that has a variety of basidiomycetes that grow in tropical forests with high humidity. This mushroom is classified as edible, has even been cultivated for a long time by the community. Therefore, nowadays oyster mushrooms have a high value, it caused many people have cultivated these mushrooms. In this study we want to show a difference in the growth of the white oyster mushroom mycelium before given promol 12 (as control) and after being given 12 types of local microbial probiotics (PROMOL12). The method used is RAK (Design random groups). In this study, it was shown that the influence of the growth of white oyster mushroom mycelium was given PROMOL12. The growth of oyster mushrooms showed a difference for baglog 12 promol medium having an average growth of 0.6 cm and a growth period of 14 days, on the other hand baglog media control had an average growth of 0.7 cm with a growth period of 17 days. With the same environmental conditions, the average temperature is 27-29.5OC and the humidity is also not less than 60%, which has an average of 70% -81% which is in accordance with the growth of oyster mushroom mycelium.
ESTIMASI CADANGAN BIOMASSA PADA POHON GAHARU (Aquilaria malaccensis Lamk.) BERUMUR 14 TAHUN DI HUTAN PENDIDIKAN FAHUTAN UNMUL (HPFU) SAMARINDA KALIMANTAN TIMUR Mirna Mirna; Rita Diana; Deddy Hardiyanto; Sidraha Kawaqib Putra
ULIN: Jurnal Hutan Tropis Vol 3, No 2 (2019)
Publisher : Fakultas Kehutanan Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32522/ujht.v3i2.2871

Abstract

Agarwood Tree is one of the important species of tree that produces Gaharu resin. The aim of this research was to determine the tree physical condition, tree health, and its biomass value. The research was examined in Education Forest of Mulawarman University Samarinda East Borneo. The method used for this research was purposive sampling, which purposely chooses the tree (Aquilaria malaccensis Lamk) as much as 40 trees. Whereas biomass value using three Allometrik equations with different parameters, obtained with the biggest biomass value using tree diameter, wood density, and tree length. Furthermore, the second biggest biomass value using two parameters of tree diameter and wood density, while the smallest biomass value using one parameter equation which was tree diameter.

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