Biomass of a man-made forest of timber tree species in the humid tropics of West Java, Indonesia

Four coniferous and four deciduous commercial tree species from Northeastern ofChina were selected to investigate the differences ofmetabolites in wood-forming tissues bygas chromatography-mass spectrometry. The results showed that the identified metabolites mainly consisted of neutral sugars, lipids, and organic acids. The mean contents of both arabinofuranose and 1-cyclohexene-1-carboxylic acid were higher in coniferous trees thanin deciduous ones. Similarly, the D-fructose and D-glucose content was significantly higherin coniferous trees than deciduous trees, but the total contents of these two sugars was roughly equal among most tree species. The mean content of lactic acid, glycerol and malic acid was lowerin coniferous trees than deciduous trees. The malic acid content decreased in later-stages of wood formation than in early-stagefor all tree species. The content of L-proline and myo-inositol was greater in later-stage of wood formation than early-stage.The contentof octadecanoic acid, D-fructose and D-glucose decreased in later-stage of wood formationfor most tree species. All of thissuggested that the metabolites in wood-forming tissues showed the significance of species-specific and seasonal dynamic differences among the eight tree species.

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Performance of preservative treatments on 32 timber tree species against termites and fungal attack at Bako, Southwestern Ethiopia

SINET Ethiopian Journal of Science ◽

10.4314/sinet.v30i2.18270 ◽

2008 ◽

Vol 30 (2) ◽

Author(s):

G Desalegn ◽

W Tadesse ◽

D Teketay ◽

W Fekadu ◽

G Kaba ◽

...

Keyword(s):

Tree Species ◽

Southwestern Ethiopia ◽

Fungal Attack ◽

Timber Tree

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Diversity Of Fruit And Timber Tree Species In The Coastal Homesteads Of Southern Bangladesh

Journal of the Asiatic Society of Bangladesh Science ◽

10.3329/jasbs.v39i1.16037 ◽

2013 ◽

Vol 39 (1) ◽

pp. 83-94

Author(s):

SK. Ahiul Islam ◽

Md. Abdul Quddus Miah ◽

Md. Ahsan Habib

Keyword(s):

Tree Species ◽

Fruit Trees ◽

Fruit Tree ◽

Betel Nut ◽

Timber Tree

In a study conducted in three southern districts (Bhola, Borguna and Patuakhali) of Bangladesh, a total of 69 tree species was recorded from the homegardens, of which 32 were fruit tree and 37 were timber tree species. Among the fruit tree species, coconut, betel nut, mango, jackfruit, guava, velvety apple were found in more than 80% households. The stocking of fruit trees per homestead was found highest for betel nut (265) followed by velvety apple (212), mango (38) coconut (25), jackfruit (20) and guava (9). Among the timber tree species, rain tree, mehogoni, raj koroi were most prevalent and found in more than 65% homesteads. The stocking of timber trees/ homestead was found highest for mehogoni (79) and then for rain tree (57), raj koroi (29) and katbadam (6). J. Asiat. Soc. Bangladesh, Sci. 39(1): 83-94, June 2013 DOI: http://dx.doi.org/10.3329/jasbs.v39i1.16037

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Predicting the distribution of forest tree species using topographic variables and vegetation index in eastern Acre, Brazil

Acta Amazonica ◽

10.1590/1809-4392201402834 ◽

2015 ◽

Vol 45 (2) ◽

pp. 167-174 ◽

Cited By ~ 5

Author(s):

Symone Maria de Melo FIGUEIREDO ◽

Eduardo Martins VENTICINQUE ◽

Evandro Orfanó FIGUEIREDO ◽

Evandro José Linhares FERREIRA

Keyword(s):

Tree Species ◽

Vegetation Index ◽

Normalized Difference Vegetation Index ◽

Elevation Gradient ◽

Forest Tree ◽

Entropy Method ◽

Slope Aspect ◽

Tropical Species ◽

Ecological Requirements ◽

Timber Tree

Species distribution modeling has relevant implications for the studies of biodiversity, decision making about conservation and knowledge about ecological requirements of the species. The aim of this study was to evaluate if the use of forest inventories can improve the estimation of occurrence probability, identify the limits of the potential distribution and habitat preference of a group of timber tree species. The environmental predictor variables were: elevation, slope, aspect, normalized difference vegetation index (NDVI) and height above the nearest drainage (HAND). To estimate the distribution of species we used the maximum entropy method (Maxent). In comparison with a random distribution, using topographic variables and vegetation index as features, the Maxent method predicted with an average accuracy of 86% the geographical distribution of studied species. The altitude and NDVI were the most important variables. There were limitations to the interpolation of the models for non-sampled locations and that are outside of the elevation gradient associated with the occurrence data in approximately 7% of the basin area. Ceiba pentandra (samaúma), Castilla ulei (caucho) and Hura crepitans (assacu) is more likely to occur in nearby water course areas. Clarisia racemosa (guariúba), Amburana acreana (cerejeira), Aspidosperma macrocarpon (pereiro), Apuleia leiocarpa (cumaru cetim), Aspidosperma parvifolium (amarelão) and Astronium lecointei (aroeira) can also occur in upland forest and well drained soils. This modeling approach has potential for application on other tropical species still less studied, especially those that are under pressure from logging.

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Tree species distribution along the environmental gradients in Pananjung Pangandaran Nature Reserve, West Java

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d090407 ◽

2008 ◽

Vol 9 (4) ◽

pp. 275-279 ◽

Cited By ~ 1

Author(s):

AGUNG KURNIAWAN

Keyword(s):

Species Distribution ◽

Tree Species ◽

Nature Reserve ◽

Environmental Gradients ◽

West Java

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Variation in wood physical properties within stems of Guazuma crinita, a timber tree species in the Peruvian Amazon

Madera y Bosques ◽

10.21829/myb.2017.2311534 ◽

2017 ◽

Vol 23 (1) ◽

Cited By ~ 1

Author(s):

Lady L. Tuisima-Coral ◽

Joel E. Odicio-Guevara ◽

John C. Weber ◽

David Lluncor-Mendoza ◽

Bohdan Lojka

Keyword(s):

Specific Gravity ◽

Physical Properties ◽

Tree Species ◽

Basic Density ◽

Agroforestry Systems ◽

Peruvian Amazon ◽

Transport And Transformation ◽

Stem Wood ◽

Timber Tree ◽

Old Trees

An understanding of wood physical properties and the interrelationships that govern them is required for efficient utilization of timber tree species. Guazuma crinita is a fast-growing timber tree of agroforestry systems in the Peruvian Amazon. The aim of this study was to assess variation in wood physical properties within the G. crinita stem. Wood samples were obtained from the base, middle and top of the stem of 12 randomly selected eight-year-old trees from six provenances in order to determine wood moisture content, density, specific gravity, radial, tangential and volumetric shrinkage and the coefficient of anisotropy. Pearson correlations between physical properties were also determined. The highest basic density was 459 kg/m3 from Tournavista provenance. Mean basic density and specific gravity were 430 kg/m3 and 0.45 respectively. There was statistically significant variation (p ≤ 0.05), due to stem level within the trees. The moderate values of density and anisotropy coefficient (1.56) suggest that G. crinita is a stable wood; these are important advantages in terms of costs of the processes of transport and transformation. Given the variation found in the limited tree samples of this study, we recommend further analysis with larger samples from different provenances and planting zones.Variación de las propiedades físicas en troncos de Guazuma crinita, una especie maderable en el Amazonas Peruano El entendimiento de las propiedades físicas de la madera y de las interrelaciones que las gobiernan es necesario para el uso eficiente de las especies maderables. Guazuma crinita es una especie arbórea de rápido crecimiento en sistemas agroforestales del Amazonas peruano. El objetivo de este estudio fue determinar la variación de las propiedades físicas de la madera en el fuste de árboles G. crinita. Las muestras de madera fueron obtenidas de la base, parte media y parte superior del tronco de 12 árboles de ocho años de edad aleatoriamente seleccionados, de seis lugares de procedencia. Con ellas se determinó: contenido de humedad, densidad, densidad relativa, contracciones radial, tangencial y volumétrica y coeficiente de anisotropía; se determinaron también las correlaciones de Pearson entre las propiedades físicas. La densidad básica mayor fue 459 kg/m3, de la procedencia de Tournavista. Las densidades básica y relativa promedio fueron 430 kg/m3 y 0.45, respectivamente. Se encontró variación estadísticamente significativa (p ≤ 0.05) entre alturas en el fuste. La madera moderadamente densa y el coeficiente de anisotropía (1.56) sugieren que G. Crinita es una madera estable, lo que representa importantes ventajas en términos de costos por transporte y proceso de transformación. Debido a la variación encontrada en las limitadas muestras de árboles de este estudio, se recomienda la realización de más análisis con mayores muestras y de diferentes sitios y plantaciones.

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Structure and composition of trees in Mount Tilu Nature Reserve, West Java, Indonesia

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d210640 ◽

2020 ◽

Vol 21 (6) ◽

Author(s):

Tri Cahyanto ◽

Muhammad Efendi ◽

DIAN MUHAMAD RAMDAN

Keyword(s):

Tree Species ◽

Nature Reserve ◽

Basal Area ◽

Principal Component ◽

Floristic Composition ◽

Diversity Indices ◽

Species Structure ◽

West Java ◽

Conservation Area ◽

Regeneration Status

Abstract. Cahyanto T, Efendi M, Ramdan DM. 2020. Structure and composition of trees in Mount Tilu Nature Reserve, West Java, Indonesia. Biodiversitas 21: 2674-2680. An understanding of the structure and composition of stands in a conservation area is needed to support sustainable management strategy. However, this information in the Mount Tilu Nature Reserve, Bandung District, West Java area is still lacking. This research was aimed to analyze the structure and composition of tree species in the block of Malagembol forest, Mt. Tilu NR. Data collection was carried out through vegetation analysis using sampling plot method with size of 10x100 m2 at three-level altitudes of 1530 m, 1745 m, and 1950 m asl. Observation parameters included species names, number of individuals, and diameter at breast height (dbh). Data were analyzed to determine the floristic composition, species structure based on their diameter class, relative basal area, diversity indices, and analysis of the importance of the main components of trees species through Principal Component Analysis (PCA). A total of 32 tree species from 23 families was found in the observation plots which was dominated by Fagaceae, Lauraceae, and Myrtaceae families. Some pioneer plants covered the gap in vegetation due to minor disturbance and residual damage in the past. Nonetheless, the dominance of stands with small diameters indicated good regeneration status following such disturbance. Based on these findings, we recommend protecting the vegetation in Mt. Tilu NR by limiting community activities that can disturb the forest.

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