Relevant bibliographies by topics / Shorea leprosula

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  2. Dissertations / Theses
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Academic literature on the topic 'Shorea leprosula'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Shorea leprosula"

1

Soares, Moises, Abubakar M. Lahjie, BDAS Simarangkir, and Yosep Ruslim. "Analisys of round wood production and profit sharing of Shorea leprosula and Shorea smithiana at PT Inhutani I Bukit Bangkirai Balikpapan." AGRIFOR 18, no. 1 (February 6, 2019): 1. http://dx.doi.org/10.31293/af.v18i1.3935.

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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).
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2

Muliadi, Mus, Yosep Ruslim, and Rochadi Kristiningrum. "ANALISIS POTENSI KAYU BULAT Shorea leprosula DI KABUPATEN KUTAI KARTANEGARA PROVINSI KALIMANTAN TIMUR." AGRIFOR 20, no. 1 (March 6, 2021): 105. http://dx.doi.org/10.31293/agrifor.v20i1.5021.

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Analisis Potensi Kayu Bulat Shorea leprosula di Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur. Kerusakan hutan alam dan semakin menurunnya pasokan kayu untuk bahan industri olahan kayu perlu kiranya peningkatan produktivitas hutan diantaranya dengan melaksanakan pembangunan hutan tanaman dipterokarpa dengan jenis Shorea leprosula. Penelitian ini bertujuan untuk (1) mengetahui potensi kayu bulat dan (2) mengetahui hubungan antar variabel berdasarkan analisis bioekonomi Shorea leprosula dengan jarak tanam 3m x 2m yang berlokasi di Kabupatn Kutai Kartanegara dengan luasan plot penelitian seluas 1 ha dengan metode pengambilan sampel tegakan secara systematic random sampling. Analisis data yang digunakan dengan mengukur diameter, tinggi dan volume tegakan setelah itu di analisis secara matematis menggunakan regresi liner sederhana untuk mengetahui hubungan berbagai variabel dengan melihat nilai koefisiensi determinasi (R2). Hasil penelitian menunjukkan bahwa total volume dan riap S. leprosula jarak tanam 3m x 2m maksimal dicapai pada umur 47 tahun sebesar 470,09 m3/ha dan riap MAI dan CAI berturut-turut sebesar 10,00 dan 10,31 m3/ha/thn. Terdapat hubungan keeratan yang tinggi antar variabel bioekonomi umur, diameter, tinggi dan riap dengan koefisien determinasi (R2) lebih besar dari 94%.
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3

-, Iskandar. "Beberapa Sifat Mekanis Kayu Jenis Meranti Merah (Shorea leprosula Miq) yang Berasal dari Hutan Bekas Terbakar." Buletin Loupe 17, no. 01 (July 31, 2021): 51–56. http://dx.doi.org/10.51967/buletinloupe.v17i01.487.

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Kurangnya informasi mengenai perubahan sifat kayu dari pohon bekas kebakaran hutan juga merupakan pertimbangan khusus yang menyebabkan belum dimanfaatkannya kayu bekas kebakaran hutan. Konsumen dalam hal ini perusahaan pengolahan kayu masih berpendapat bahwa kayu dari hutan bekas kebakaran sifat kayunya akan musnah atau berkurang. Dalam penelitian ini akan diteliti sifat-sifat mekanika kayu setelah terjadi kebakaran hutan, dimana akibat kebakaran hutan semua pohon terbakar tetapi ada yang bisa hidup dan ada juga yang langsung mati. Agar permasalahan tidak terlalu meluas, maka disini diperiksa pengaruhnya hanya pada jenis Meranti Merah (Shorea leprosula). Kesimpulan dari penelitian ini adalah sebagai berikut: 1. Ketangguhan kayu Meranti Merah (Shorea Leprosula Miq) tidak berubah secara signifikan akibat kebakaran hutan, 2. Kekuatan lentur dan ketahanan patah kayu Meranti Merah (Shorea Leprosula Miq) nilainya berkurang secara signifikan akibat kebakaran hutan yang terjadi 3. Hal tersebut di atas terjadi karena mati dan keringnya beberapa sel penyusun kayu akibat pengaruh panas, sehingga kayu cenderung bersifat keras.
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4

Maharani, Rizki, and Andrian Fernandes. "CORRELATION BETWEEN WOOD DENSITY AND FIBER LENGTH WITH ESSENTIAL MACRO-NUTRIENTS ON BASE OF STEM OF Shorea leprosula and Shorea parvifolia." KnE Life Sciences 2, no. 1 (September 20, 2015): 625. http://dx.doi.org/10.18502/kls.v2i1.231.

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<p>S. leprosula and S. parvifolia are widely developed as source of high quality wood. The quality of wood could be affected by nutrient elements. It is important to measure the nutrients contained in tree stem including wood density and fiber length due to their influence in tree growth. This research aims to know correlation between wood density and fiber length with distribution of essential macro-nutrients; N, P and K on stem base of S. leprosula and S. parvifolia trees. Wood density measurement followed DIN 2135 standard method, fiber length measurement followed FPL method, and nutrient measurement used AAS method. Further, the observation data was analyzed using SPSS 16 software. Wood density and fiber length on stem bases of both of tree species tended to increase radially from section nearby the pith to section nearby the bark respectively. Wood density of S. leprosula ranged from 0.333-0.362 with 1.279-1.343 µm in fiber length, while wood density of S. parvifolia ranged from 0.285-0.346 with 1.497-1.805 µm in fiber length. Distribution of nutrient N, P and K of stem base from pith to bark also tended to increase. On S. leprosula, nutrient elements N, P, K had significant correlation with wood density and fiber length. On S parvifolia, nutrient elements N, P, K had a significant correlation with wood density. Meanwhile, nutrient elements N, P, K had a non significant correlation with fiber length.</p><p><br /><strong>Keywords</strong> : Shorea leprosula, Shorea parvifolia, base of the stem, wood quality distribution, nutrient distribution.</p>
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5

Rosdayanti, Henti, Ulfah Juniarti Siregar, and Iskandar Z. Siregar. "Leaf Morphology Traits of Shorea spp in Ex-Situ KHDTK Haurbentes." Media Konservasi 24, no. 2 (October 3, 2019): 207–15. http://dx.doi.org/10.29244/medkon.24.2.207-215.

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Shorea is a genus of the Dipterocarpaceae family which shows high economic and ecological values. Currently, market demand for wood is still met from natural forests that are degrading due to over exploitation. The degraded forests are included in the rehabilitation program that require significant number of planting stocks, mainly from seedlings or wildlings. Correct species identification of planting stocks, particularly wildlings, is an important first step in planting activities and it is relevant with Shorea spp planting stocks due to leaf morphology traits. This study was aimed to examine the traits of leaf morphology of four Shorea species for easy field identification. Samples were taken from five trees for each species. Morphological trait identification was conducted by leaf observation and measurement. The results showed that all four species had the same apex shape. Six of the twelve morphological characteristic of the variable character can influence the morphological characteristics of the leaves, namely the roving leaf, leaf area, leaf length, aspect ratio, form factorand perimeter ratio of diameter. S. leprosula is similar to S. parvifolia, while S. ovalis is similar to S. guiso. Shorea leaf character S. parvifolia differentiated from S. leprosula, while Shorea ovalis similar to Shorea guiso. The LP variable (length from the base of the leaf to the widest point of the leaf) is a variable that can be used as aleaf morphological characteristic of the four Shorea which are compared because each one has a different value. S. ovalis has the highest LP value, followed by S. guiso and S. leprosula, while S. parvifolia has the lowest LP value. Keywords: apex shape, identification, leaf morphology traits, Shorea
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6

Fernandes, Andrian, and Ngatiman . "PATTERNS OF Coptotermes sp. TERMITE ATTACK ON Shorea leprosula Miq IN KHDTK SEBULU, EAST KALIMANTAN." KnE Life Sciences 2, no. 1 (September 20, 2015): 544. http://dx.doi.org/10.18502/kls.v2i1.213.

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<p>Red meranti (Shorea leprosula Miq) as a major commercial timber has been widely planted in Dipterocarp forests. Coptotermes sp. termite often attacks S. leprosula Miq to its death, but the attack patterns are unknown. This research aims to get data on the frequency, intensity, and patterns of Coptotermes sp. attack in KHDTK Sebulu, East Kalimantan. Methods used were observation, recording, and mapping on S. leprosula Miq trees attacked by termites in KHDTK Sebulu. The results showed that the frequency of termite attacks on S. leprosula Miq in KHDTK Sebulu was 6.4-30.5% and termite attacks intensity was 4.7-22.1%. Termite attack patterns tended to spread and were followed by the formation of the nest to produce colonies. </p><p><strong>Keywords</strong> : S. Leprosula Miq plant, Coptotermes sp.,attack frequency, attack intensity, attack pattern.</p>
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7

Cahyono, Deddy Dwi Nur, Rayan Rayan, and Rini Handayani. "PERTUMBUHAN KEBUN PANGKASAN JENIS Shorea leprosula Miq." Jurnal Penelitian Dipterokarpa 7, no. 1 (October 2013): 43–52. http://dx.doi.org/10.20886/jped.2013.7.1.43-52.

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8

Ishiyama, Hiroko, Nobuyuki Inomata, Tsuneyuki Yamazaki, Nor Aini Ab Shukor, and Alfred E. Szmidt. "Demographic history and interspecific hybridization of four Shorea species (Dipterocarpaceae) from Peninsular Malaysia inferred from nucleotide polymorphism in nuclear gene regions." Canadian Journal of Forest Research 38, no. 5 (May 2008): 996–1007. http://dx.doi.org/10.1139/x07-218.

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Shorea acuminata Dyer, Shorea curtisii Dyer ex King, Shorea leprosula Miq., and Shorea parvifolia Dyer are dominant tree species in the tropical rainforest of Peninsular Malaysia, which experienced several climatic changes during Pleistocene. To investigate the current population structure and demographic history of these species, we analyzed levels and patterns of nucleotide polymorphism of the nuclear gene region PgiC. We also used sequence data of the GapC gene region obtained in our previous study. Negative Tajima’s D values observed in both investigated gene regions for S. curtisii, S. leprosula, and S. parvifolia implied that all three species have experienced population expansion events. Little to moderate levels of population differentiation in S. acuminata and S. curtisii suggested recent divergence of the investigated populations after postglacial colonization of the Peninsular Malaysia. In addition, some haplotypes were similar or identical to haplotypes of the other species. The existence of such haplotypes could be partially explained by interspecific hybridization. Indeed, we found some putative hybrid individuals. Interspecific hybridization among closely related species might have contributed to the polymorphism of the investigated species.
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9

Wahyudi, Imam, and Julius Johansen Sitanggang. "Wood Quality of Cultivated Red Meranti (Shorea leprosula Miq.)." Jurnal Ilmu Pertanian Indonesia 21, no. 2 (August 31, 2016): 140–45. http://dx.doi.org/10.18343/jipi.21.2.140.

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10

Nuroniah, Hani Sitti, Oliver Gailing, and Reiner Finkeldey. "Development of a diagnostic DNA marker for the geographic origin of Shorea leprosula." Holzforschung 71, no. 1 (January 1, 2017): 1–10. http://dx.doi.org/10.1515/hf-2016-0086.

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Abstract The development of sequence characterized amplified region (SCAR) markers derived from amplified fragment length polymorphisms (AFLPs) is described for Shorea leprosula. An AFLP fragment that showed nearly complete differentiation between Borneo and Sumatra was gel-extracted, sequenced, and converted into a SCAR marker using the inverse polymerase chain reaction (PCR) technique. The single nucleotide polymorphism (SNP) that originally caused the AFLP was found in the MseI restriction site. Differentiation between islands was detected either as size variation of the codominant SCAR marker or after digestion of the PCR products with the restriction enzyme MseI (PCR-RFLP). Size variation was due to insertions/deletions found within the sequenced region that flanked the original AFLP fragment. After genotyping 151 samples of S. leprosula from 14 populations in Sumatra and Borneo, all but one sample from Sumatra were homozygous for one size variant (427 bp), while S. leprosula populations from Borneo showed different genotypes than Sumatra populations and variation not only among populations but also within populations. Complete differentiation and fixation on alternative variants was found for the geographic regions of Sumatra and Borneo by the PCR-RFLP method. The SCAR marker did not amplify in Shorea parvifolia and thus can also be used to distinguish between S. leprosula and S. parvifolia. The marker was successfully amplified from wood DNA extracts suggesting its applicability to track the geographic origin of timber.
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Dissertations / Theses on the topic "Shorea leprosula"

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Aminah, Hamzah. "Vegetative propagation of Shorea leprosula Miq. by stem cuttings." Thesis, University of Edinburgh, 1995. http://hdl.handle.net/1842/13262.

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The thesis reports new studies on the factors affecting the rooting of single node leafy stem cuttings of Shorea leprosula, a Dipterocarp timber tree native to South East Asia. Several aspects of vegetative propagation were investigated including treatments of the stock plants from which the cuttings were taken, propagation systems and post-severance treatments to cuttings. Stock plants raised in 1 litre pots of forest top soil and sand (3:1), and fertilised every two weeks with 0.5 g per plant of NPK fertiliser (12%N:12%P2O5:17%K2O:2MgO + Trace elements) were suitable for production of cuttings. Cuttings from stock plants raised under low irradiance of 0 to 325 μmol photons m-2s-1 (nominally 10% full sunlight) produced higher rooting and more roots than those from a high irradiance of 0 to 722 μmol photons m-2s-1 (nominally 30% full sunlight). S.leprosula stem cuttings rooted equally well in the mist and non-mist propagation systems as long as a consistently low vapour pressure deficit (VPD) was maintained. A temporary increase in the VPD of more than 0.5 kPa at peak irradiance could be tolerated by S.leprosula cuttings. Cuttings also rooted equally well in media with either low or high water retaining capacity such as river sand, coconut fibre or a mixture of these two media. A diurnal irradiance of 0 to 360 μmol photons m-2s-1 was adequate for rooting but 0 to 98 μmol photons m-2s-1 resulted in low rates of net photosynthesis (Pn) and a much reduced rooting success. In the enclosed mist propagation system, misting every 1 hour with a 1 minute duration of spray, throughout the day and night, provided sufficient moisture to cuttings and maintained mean relative humidity of more than 90%. Cuttings planted in the same system with a 3 hour misting frequency tended to develop water deficit as indicated by low relative water content and stomatal conductance.
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2

Nuroniah, Hani Sitti. "Diagnostic markers for the identification of the tree species Shorea leprosula Miq. and S. parvifolia Dyer and the geographic origin of S. leprosula Miq." Göttingen Optimus Mostafa, 2009. http://d-nb.info/994412541/04.

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3

Izuno, Ayako. "Ecological and conservation genomics for the tropical tree species Metrosideros polymorpha and Shorea leprosula." Kyoto University, 2016. http://hdl.handle.net/2433/215595.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第19769号
農博第2165号
新制||農||1040(附属図書館)
学位論文||H28||N4985(農学部図書室)
32805
京都大学大学院農学研究科森林科学専攻
(主査)教授 井鷺 裕司, 教授 北山 兼弘, 教授 神﨑 護
学位規則第4条第1項該当
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Books on the topic "Shorea leprosula"

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Omon, R. Mulyana. Pengaruh jenis cendawan mikoriza dan media tumbuh terhadap perkembangan stek Shorea leprosula Miq. [Bogor]: Program Pascasarjana, Institut Pertanian Bogor, 1994.

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Priadjati, Aldrianto. Dipterocarpaceae: Forest fires and forest recovery. Wageningen, The Netherlands: Tropenbos International, 2002.

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Book chapters on the topic "Shorea leprosula"

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Awang, Muhamad, Ahmad Makmom Abdullah, and Akio Furukawa. "Photosynthetic Light Environment of Tropical Lowland Forest and Growth Response of Shorea Leprosula." In Environmental Forest Science, 379–86. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5324-9_41.

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Conference papers on the topic "Shorea leprosula"

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Kamarozaman, AS, N. Ahmat, MSM Johari, ZZ Hafiz, MI Adenan, and SAS Mohamad. "Isolation of tetramer stilbenoids from Shorea leprosula Miq., acetylcholinesterase inhibitory activity and molecular docking study." In 67th International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA) in cooperation with the French Society of Pharmacognosy AFERP. © Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-3399897.

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