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Journal articles on the topic 'Commercial tree species'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

TAG, PROF. HUI. "Foliar fungal pathogens of the tree species." Journal of Bioresources 12, no. 2 (2024): 26–30. https://doi.org/10.5281/zenodo.14891682.

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Tree species are predominantly found throughout our surrounding environment. They hold significant economic and ecological importance for us. However, it is noticeable that most research focuses on commercial crops, aiming to enhance their production by mitigating the adverse effects of pathogens. In contrast, naturally growing trees receive less attention than commercially cultivated crops. Similar to crops, trees also face adverse conditions due to surrounding pathogens. As a result, they compromise their healthy growth and survivability rates. In the present study, we encountered several in

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2

Westfall, James A., and Charles T. Scott. "Taper Models for Commercial Tree Species in the Northeastern United States." Forest Science 56, no. 6 (2010): 515–28. http://dx.doi.org/10.1093/forestscience/56.6.515.

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Abstract A new taper model was developed based on the switching taper model of Valentine and Gregoire; the most substantial changes were reformulation to incorporate estimated join points and modification of a switching function. Random-effects parameters were included that account for within-tree correlations and allow for customized calibration to each individual tree. The new model was applied to 19 species groups from data collected on 2,448 trees across the northeastern United States. A comparison of fit statistics showed considerable improvement for the new model. The residuals occurred

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3

Krisnawat, Haruni, and Djoko Wahjono. "EFFECT OF POST-LOGGING SILVICULTURAL TREATMENT ON GROWTH RATES OF RESIDUAL STAND IN A TROPICAL FOREST." JOURNAL OF FORESTRY RESEARCH 7, no. 2 (2010): 112–24. https://doi.org/10.20886/ijfr.2010.7.2.112-124.

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Post-logging silvicultural treatments are generally performed to improve yields of the remaining tree species by increasing their growth rate. In this study the effects of silvicultural treatment on the growth rates of commercial (dipterocarps and non-dipterocarps) as well as non- commercial tree species in a tropical forest in West Kalimantan were examined and were compared to a control treatment. Silvicultural treatment applied was liberation of future crop trees from lianas and neighbouring competing trees. Treatments were applied to six plots of 80 m x 80 m each. The plots comprised 64 qua

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Okumu, Joyce AKinyi, David Kipkirui Langat, and Samson Okoth Ojung'a. "Determinants of Commercial Tree Growing Among Smallholder Farmers in Nandi County, Kenya." East African Journal of Forestry and Agroforestry 5, no. 1 (2022): 269–85. http://dx.doi.org/10.37284/eajfa.5.1.939.

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Commercial Forestry sector contributes more than $600 billion to the global economy each year. Farm forestry is expected to contribute immensely to meeting materials needs for this sector and also provide ecosystem services. To support the tree growing by farmers, it is essential to understand the factors that influence commercial tree growing. The findings of a study to assess the current state of on-farm tree planting and the key variables influencing adoption of commercial tree growing on farms are reported in this paper. Cross sectional data on commercial tree growing was collected from tw

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Lewis, Jeffrey C. "Creating Snags and Wildlife Trees in Commercial Forest Landscapes." Western Journal of Applied Forestry 13, no. 3 (1998): 97–101. http://dx.doi.org/10.1093/wjaf/13.3.97.

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Abstract Conversion of original older forests to second-growth stands has resulted in the loss of snag and wildlife tree habitat in the Pacific Northwest. Because many species require these habitat features, habitat managers have attempted to create snags and wildlife trees. From written contracts and contractor interviews, I summarized information about currently used snag and wildlife tree creation techniques including operation specifications, cost-effectiveness, safety considerations, and numbers of trees created. Removing the top of a tree with a chainsaw (~$35 per tree) or explosives (~$

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SHI, JIANGTAO, JUNYI PENG, CHONGYANG XIA, and JIAN LI. "A COMPARISON OF METABOLITES IN WOOD-FORMING TISSUES FROM EIGHT COMMERCIAL TIMBER TREE SPECIES OF HEILONGJIANG PROVINCE IN CHINA." WOOD RESEARCH 66(5) 2021 66, no. 5 (2021): 746–61. http://dx.doi.org/10.37763/wr.1336-4561/66.5.746761.

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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

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Santos, Misael Freitas dos, Afonso Figueiredo Filho, Allan Libanio Pelissari, Rodrigo Geroni Mendes Nascimento, and Daniele Lima da Costa. "Can tree hollow diameter be predicted? A study of native commercial trees in the eastern brazilian Amazon." DELOS Desarrollo Local Sostenible 17, no. 59 (2024): e1928. http://dx.doi.org/10.55905/rdelosv17.n59-013.

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The objective of this research was to test selected and validated generic and species-specific equations to estimate three different hollow diameter measurements in native commercial trees from a managed forest in the state of Pará, Brazil. A sample of 4,912 hollow trees, involving 29 species, was used to model the mean hollow diameter at tree level, and another composed of 3,867 hollow trees, belonging to 28 species, was used to model the mean hollow diameter of the first log of the commercial stem and the hollow diameter at the base of the tree. 30% of the two samples were previously randoml

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Sharma, Mahadev. "Total and Merchantable Volume Equations for 25 Commercial Tree Species Grown in Canada and the Northeastern United States." Forests 12, no. 9 (2021): 1270. http://dx.doi.org/10.3390/f12091270.

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Accurate estimates of tree bole volume are fundamental to sustainable forest management. Total inside and outside bark and merchantable volume equations were developed for 25 major commercial tree species grown in natural stands in eastern and central Canada and the northeastern United States. Data used to develop these equations was collected from 9647 trees sampled from natural stands across the study area. The number of trees sampled varied among species. Jack pine (Pinus banksiana Lamb.) had the most observations (1648 trees) and American basswood (Tilia americana) and red oak (Quercus rub

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9

Lewis, Jeffrey C. "Creating Snags and Wildlife Trees in Commercial Forest Landscapes." Western Journal of Applied Forestry 13, no. 3 (1998): 97–101. https://doi.org/10.5281/zenodo.14818094.

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(Uploaded by Plazi for the Bat Literature Project) Abstract Conversion of original older forests to second-growth stands has resulted in the loss of snag and wildlife tree habitat in the Pacific Northwest. Because many species require these habitat features, habitat managers have attempted to create snags and wildlife trees. From written contracts and contractor interviews, I summarized information about currently used snag and wildlife tree creation techniques including operation specifications, cost-effectiveness, safety considerations, and numbers of trees created. Removing the top of a tre

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10

Pandey, Tirtha Raj. "Tree Diversity in Nepal: An updated list." Journal of Plant Resources 22, no. 1 (2024): 43–63. http://dx.doi.org/10.3126/bdpr.v22i1.68293.

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Trees are one of the dominant life forms in plant world. They have important ecological and commercial roles in society. Nepal is also rich in terms of tree species diversity; however, a comprehensive country-wide inventory is still in need. This paper aims to document the occurrence of native and naturalized tree species of the country with updated information on their identification and nomenclatural issues. Extensive database searches including the ‘Global Tree Search’ and consultation of many publications has revealed the occurrence of 700 taxa of trees belonging to 90 families, 300 genera

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Dzulhajjah, Rahmah, Ikraeni Safitri, and Arif Budiman Ashadi. "INVENTARISASI POTENSI TEGAKAN POHON PADA HUTAN HAK DI DESA LATOMA JAYA KABUPATEN KONAWE." JURNAL AGRIMENT 8, no. 1 (2023): 65–73. http://dx.doi.org/10.51967/jurnalagriment.v8i1.2545.

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The aim of this research is to find out the potential of tree stands in the private forest of Latoma Village. Research using quantitative, descriptive methods in this study is intended to obtain an overview and information regarding data on the potential of tree stands in private forest areas. From the results of data collection, it was found that the number of trees successfully recorded was a total of 25 tree species, all of which were woody plants in the form of trees (trees) with a diameter class of 20-60 cm. There are 3 types of trees in the private forest, so the dominant trees are in th

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12

Vauhkonen, Jari, Timo Tokola, Petteri Packalén, and Matti Maltamo. "Identification of Scandinavian Commercial Species of Individual Trees from Airborne Laser Scanning Data Using Alpha Shape Metrics." Forest Science 55, no. 1 (2009): 37–47. http://dx.doi.org/10.1093/forestscience/55.1.37.

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Abstract Airborne laser scanning (ALS) data are not usually considered to be very informative with respect to tree species, and this information is often obtained by combining such data with spectral image material. The aim here was to test the ability of variables derived solely from ALS data to describe the crown shape and structure characteristics required for tree species discrimination. For that purpose, we constructed tree crown approximations from the three-dimensional return data by applying a computational geometry approach, the alpha shape concept, and developed metrics for describin

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Lotfiomran, Neda, and Michael Köhl. "Retrospective analysis of growth A contribution to sustainable forest management in the tropics." IAWA Journal 38, no. 3 (2017): 297—S21. http://dx.doi.org/10.1163/22941932-20170173.

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Reliable information on tree growth is a prerequisite for sustainable forest management (SFM). However, in tropical forests its implementation is often hampered by insufficient knowledge of the growth dynamics of trees. Although tree ring analysis of tropical trees has a long history, its application for SFM has only recently been considered. In the current study, we illustrate both the potentials and limitations of a retrospective growth assessment by tree ring analysis under the prevailing tropical conditions in a Surinamese rain forest. For this purpose, 38 commercial tree species were scre

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14

Ouellet, D. "Biomass Equations for Six Commercial Tree Species in Quebec." Forestry Chronicle 61, no. 3 (1985): 218–22. http://dx.doi.org/10.5558/tfc61218-3.

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Six commercial species were sampled throughout Quebec and prediction equations of ovendry masses for the total above-ground tree and its components white cedar (Thuya occidentalis L.) and eastern hemlock(Tsuga canadensis (L.) Carr.). The deciduous species are: red maple (Acer rubrum L.), white ash (Fraxinus americana L.), black ash (Fraxinus nigra Marsh.), and beech (Fagus grandifolia Ehrh.). The components expressed in ovendry masses are: the total tree, the stem, the merchantable stem, the wood and bark of the merchantable stem, and the crown. A nonlinear model is used with the diameter at b

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Ortega-Álvarez, Rubén, Hernando A. Rodríguez-Correa, and Ian MacGregor-Fors. "Trees and the City: Diversity and Composition along a Neotropical Gradient of Urbanization." International Journal of Ecology 2011 (2011): 1–8. http://dx.doi.org/10.1155/2011/704084.

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In this study we assessed tree species richness, density, and composition patterns along a gradient of urbanization of a megacity. Our results show that total, native, and exotic tree densities were highest in green areas where larger spaces are considered for greening purposes. Conversely, total, native, and exotic tree species richness were highest in land uses with intermediate levels of urban development (residential, residential-commercial areas). Not finding highest tree species richness in less developed urban areas suggests that cultural factors may shape the array of species that are

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Biazatti, Scheila Cristina, Rômulo Môra, Marta Silvana Volpato Sccoti, João Fideles de Brito Júnior, Nayara Dos Santos Queiroz, and Rafaella De Angeli Curto. "Criterion Dendrometer as a non-destructive method for dendrometric estimations of native species in Western Amazon." Revista Ibero-Americana de Ciências Ambientais 11, no. 6 (2020): 59–70. http://dx.doi.org/10.6008/cbpc2179-6858.2020.006.0006.

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The use of non-destructive approach for measurement in native environments is still a challenge given the ecology of natural forests. In this sense, the present study aimed to verify the accuracy of the Criterion RD1000® optical dendrometer in the diametric and volumetric estimates of native species in a forest concession area, in Western Amazon. A total of 41 trees were measured at the FMU (Forest Management Unit) III, Flona (National Forest) of Jamari, Rondônia, Brazil, by non-destructive approach (standing tree), using Criterion RD1000® optical dendrometers (indirect measurements), and by d

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Eleuterio, Ana Alice, Maria Aparecida de Jesus, and Francis E. Putz. "Stem Decay in Live Trees: Heartwood Hollows and Termites in Five Timber Species in Eastern Amazonia." Forests 11, no. 10 (2020): 1087. http://dx.doi.org/10.3390/f11101087.

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Research Highlights: Tree size and wood characteristics influenced the susceptibility of five Amazonian timber tree species to heartwood decay and colonization by termites. Termites occurred in the heartwoods of 43% of the trees, with Coptotermes testaceus the most abundant species. Background and Objectives: Hollows and rotten cores in the stems of living trees have ecological and economic impacts in forests managed for timber. The decision on whether to cut or maintain hollow trees in such forests must account for the susceptibility of different tree species to decay. We investigated tree an

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Das, Annapurna N. "Perception and attitude towards tree growing in east Nepal." Banko Janakari 9, no. 2 (2017): 3–9. http://dx.doi.org/10.3126/banko.v9i2.17658.

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Information on existing tree growing practices were collected from seven villages of Morang District and six that of Dhankuta through Rural Appraisals. The tree species that the rural households were willing to introduce into their farmland have been listed. Results indicated that there is a common interest among rural households of both the Terai and Middle Hills towards growing bamboo in private farmlands. Rural households in the Terai preferred timber species such as sissoo (Dalbergia sissoo) and fruit trees which have high commercial values, whereas Middle Hills households preferred fodder

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Kardiman, Reki, and Irma Leilani. "Structure of Tree Community on Agroforestry Parak in Peri-Urban Areas District of Lubuk Alung Padang Pariaman." Bioscience 7, no. 1 (2023): 14. http://dx.doi.org/10.24036/0202371122621-0-00.

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Agroforestry or tree crops in West Sumatra is called parak, it mostly related to rural and farmers but at some developing areas the parak is still existed with a high potential changes in structure and floristic composition due to commercial orientation. To explore the possible changes of tree community in such developing areas, 11 of 20x20 meter plots were established across parak areas in peri-urban site in Lubuk Alung district, Padang Pariaman Regency, West Sumatra Indonesia, aimed to specifically investigate tree density, stand basal area, spesies distribution and other ecological atribute

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20

Hendromono, Hendromono. "POTENCY OF RAMIN (Gonystylus bancanus Kurtz.) AND OTHER COMMERCIAL SPECIES IN PEAT SWAMP FOREST MANAGED WITH TPTI SILVICULTURAL SYSTEM IN BAGAN, RIAU." Journal of Forestry Research 2, no. 2 (2005): 89–98. https://doi.org/10.20886/ijfr.2005.2.2.89-98.

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Ramin  <em>(</em><em>Gonystylus bancanus </em>Kurtz.)  is one  of  the  tree  species in  peat-swamp  forest  that  is endangered due to excessive exploitation. The objective of this research was to assess the potency of rarnin and other commercial tree species in primary and logged over peat-swamp forests at Bagan, Riau. The tree stands were inventoried in primary forest of the 2004 and 2006 Annual Work Plan (RKTs) and in  the  1997  and  2001  RKTs  managed  with  Indonesian  Selective Cutting &nbs

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Jat, Sugma, and P. Thakur. "Growth and physiological responses of Matricaria chamomilla to different doses of organic manures under poplar based agroforestry systems." Journal of Non-Timber Forest Products 19, no. 2 (2012): 81–88. http://dx.doi.org/10.54207/bsmps2000-2012-b2dh0b.

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The investigation was aimed to explore the possibilities. of successful cultivation of Matricaria chamomilla as an intercrop with Poplar trees along with standardizing the doses of organic manures used. Theexperiment comprised eighteen treatments, which included four different doses, each of vermicompost and FYM @ 1 t/ha, 2t/ha, 3t/ha and 4t/ha in combination with and without Poplar trees. The observations were taken attwo distances, i.e. D₁ (up to 80 cm) and D₂ (81 to 160 cm) from the tree line. The results revealed that Matricaria chamomilla can be grown successfully under Agroforestry Syste

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MUHINDO KIMINYA, Jean Baptiste, Jean NDAMIYEHE N CUTIRAKIZA, Jean Claude RIZINDE HAKIZIMANA, Faustin BONYOMA BASSOY, and Leon KASAKA DINGBO. "Assessment of the woody potential of commercial tree species in the Yangambi Biosphere Reserve – Tshopo/R province of Congo." Cahiers du cedimes 19, no. 3 (2024): 14–26. https://doi.org/10.69611/cahiers19-3-01.

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This study was to contribute on the knowledge of the floristic composition of commercial tree species of the Yangambi Biosphere Reserve and quantify their timber potential. For achieving this, a tree inventory was conducted on a sample of 2.5 hectares divided into 5 plots of 200 x 25 m each one placed on a track of 1000 meters. The inventory model used in this study is that proposed by the Ministry of Environment of the Democratic Republic of Congo. Thus, 166 trees belonging to 24 commercial species grouped into 11 families were identified. In terms of density, the individuals surveyed are dis

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Ekpo Abraham Salamatu, Salamatu, Haruna Kuje Ayuba, Danjuma N. Marcus, and Adamu Tanko Ogah. "Analysis of Tree Species Preference and Reasons among Commercial Charcoal Producers in Nasarawa State, Nigeria." European Journal of Environment and Earth Sciences 2, no. 2 (2021): 24–29. http://dx.doi.org/10.24018/ejgeo.2021.2.2.124.

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Commercial charcoal production has over time become an indispensable means of livelihood among rural settlers in Nasarawa State. However, charcoal production involves woodland exploitation which contributes to deforestation. Considering the growing significance of charcoal in rural and urban livelihoods in Nasarawa State, this paper analysed the preference of tree species and reasons among commercial charcoal producers in Nasarawa State in view of identifying endangered species and suggesting measures to ensure sustainability of the business. The study employed descriptive survey using both qu

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LEONOVICH, I. S., N. H. KAPICHNIKOVA, and K. A. BUDILOVICH. "INFLUENCE OF FOLIAR APPLICATION OF PREPARATIONS OF DIFFERENT SPECTRUM OF ACTION ON THE COMMERCIAL QUALITY OF APPLE-TREE FRUITS SPECIES OF THE EARLY RIPENING PERIOD." Fruit-Growing 33 (August 16, 2021): 18–24. http://dx.doi.org/10.47612/0134-9759-2021-33-18-24.

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In 2018–2020 in the department of fruit-growing technology of RUE “Institute of Fruit-growing”, the effect of foliar application of preparations of different spectrum of action (growth regulator “Epinˮ, organomineral fertilizer “Megafolˮ and complex fertilizer “KompleMet COˮ) on the yield and commercial quality of apple-tree fruits of early ripening period species Mechta and Kovalenkovskoye on a semi-dwarf rootstock 54-118. As a result of the investigations, it was found that the use of complex preparations of various effects on average over three years of researc

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Ramdial, Donna, Artie Sewdien, Jerry Rasdan, et al. "Stump Sprout Characteristics of Three Commercial Tree Species in Suriname." Forests 11, no. 11 (2020): 1130. http://dx.doi.org/10.3390/f11111130.

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We compared stump sprouting by three common timber species in Suriname on the basis of sprout origins on stumps, sprout densities, and sprout height:diameter ratios. We then compared some leaf and stem functional traits of 15–18-month-old resprouts and nearby conspecific saplings of the same height (0.5–3.5 m) but unknown age. Stumps of Dicorynia guianensis Amsh. (29–103 cm in diameter) produced the most sprouts (x = 9.2/stump), followed by the 50–71 cm diameter stumps of Eperua falcata Amsh. (10.6/stump), and the 30–78 cm diameter Qualea rosea Amsh. (5.9/stump); sprout density did not vary wi

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Anubha, Srivastav, and Om Shukla Hari. "Assessment of Trees Outside Forests in Rural Region of Varanasi District in U.P." International Journal of Environmental & Agriculture Research 7, no. 10 (2021): 32–38. https://doi.org/10.5281/zenodo.5624523.

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<strong>Abstract</strong><strong>—</strong> A study has been undertaken to assess the number of important tree species outside forests in rural areas of district Varanasi. Varanasi is a commercial center and a consumption center for the tree based needs. The species selected were Teak, Mango, Shisham, Mahua, Neem, Aonla and Eucalyptus. These species are very common species as Trees outside Forests (ToF) in rural area of the district. Mango, Neem and Shisham are most demanded species of the region. The district Varanasi has 1277 villages, out of which 12 villages (1 %) were taken for the

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Romero, Flora Magdaline Benitez, Laércio Antônio Gonçalves Jacovine, Angélica de Cássia Oliveira Carneiro, et al. "Carbon Content of Amazonian Commercial Tree Boles: Implications for Forest Management." Sustainability 17, no. 7 (2025): 2960. https://doi.org/10.3390/su17072960.

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Reliable values for carbon content in trees are essential for quantifying forest carbon stocks and estimating carbon dioxide emissions. This study analyzed the carbon content in the boles of commercial tree species in the Brazilian state of Acre, in the southwestern Amazon. Composite samples were prepared from wood wedges obtained along each individual’s commercial bole (the trunk from the point of cut to the first significant branch). Fifty-seven trees were analyzed, spanning nine families, seventeen genera, and nineteen species in the Amazon forest. The results revealed a variation in carbon

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Cleary, Michelle, Funda Oskay, Hatice Tugba Doğmuş, Asko Lehtijärvi, Stephen Woodward, and Anna Maria Vettraino. "Cryptic Risks to Forest Biosecurity Associated with the Global Movement of Commercial Seed." Forests 10, no. 5 (2019): 459. http://dx.doi.org/10.3390/f10050459.

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The import and export of tree seed carries with it risks of inadvertent introduction of pests and pathogens to hitherto unaffected regions. Although trade in seed of specified trees is regulated, phytosanitary requirements for most tree species are minimal, even those related to the most important forest tree species in a given region. A better understanding of the microbiome associated with seed intended for commercial production or ornamental use, and their potential risk with the transport from the source origin of distributors, will help regulatory agencies implement measures to safeguard

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Felton, Adam, Jeff T. Wood, Annika M. Felton, David B. Lindenmayer, and Bennett A. Hennessey. "A comparison of bird communities in the anthropogenic and natural-tree fall gaps of a reduced-impact logged subtropical forest in Bolivia." Bird Conservation International 18, no. 2 (2008): 129–43. http://dx.doi.org/10.1017/s0959270908000117.

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AbstractWe studied bird community composition and abundance within four vegetation and disturbance categories located within selectively logged and unlogged forest in a Bolivian subtropical lowland forestry concession. The logged forest was subject to reduced-impact logging between 1 and 4 years prior to our study. The four categories were: 1) ‘gap’ points possessing natural or anthropogenic tree-fall gaps; 2) ‘target’ points with one of five commercial tree species of harvestable size; 3) ‘future’ points possessing a commercial tree below harvestable size and 4) ‘non-target’ points not posses

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Scaria, Francis, and Bradley D. Pinno. "Pre-Commercial Thinning Increases Tree Size and Reduces Western Gall Rust Infections in Lodgepole Pine." Forests 15, no. 5 (2024): 808. http://dx.doi.org/10.3390/f15050808.

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Alberta’s forest industry is predicted to be impacted by a medium-term decline in timber supply. Intensive silviculture tools, such as pre-commercial thinning, have been shown to increase individual tree growth, shorten rotation lengths, and improve stand merchantability in important commercial species such as lodgepole pine. However, lodgepole pine stands are susceptible to western gall rust infections, and thinning at an early stage may increase infection rates. This study collected tree and stand level data from 33 operational harvest origin lodgepole pine stands consisting of 11 stands thi

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Assmuth, Aino, Janne Rämö, and Olli Tahvonen. "Optimal Carbon Storage in Mixed-Species Size-Structured Forests." Environmental and Resource Economics 79, no. 2 (2021): 249–75. http://dx.doi.org/10.1007/s10640-021-00559-9.

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AbstractWe extend the study of economically optimal carbon storage to a previously unexplored forest type, mixed-species size-structured stands. The ecological model applied in the study is a transition matrix model with growth functions for boreal Norway spruce (Picea abies (L.) Karst.), birch (Betula pendula Roth and B. pubescens Ehrh.), and other broadleaves. The other broadleaved trees are assumed to have no commercial value. We maximize the sum of timber revenues and the value of carbon storage by optimizing the timing and intensity of thinnings and the potentially infinite rotation age.

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Celestian, Sarah, and Chris Martin. "Effects of Parking Lot Location on Size and Physiology of Four Southwestern U.S. Landscape Trees." Arboriculture & Urban Forestry 31, no. 4 (2005): 191–97. http://dx.doi.org/10.48044/jauf.2005.024.

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This study evaluated effects of two parking lot landscape locations on size and physiology of four regionally common landscape tree species. Tree size measurements were made during August 2001 and 2002 and tree gas exchange and leaf chlorophyll concentrations were measured during April and August 2002. Trees were mostly smaller and leaf gas exchange fluxes were lower for Australian bottle tree (Brachychiton populenus Schott & Endl.), Arizona ash (Fraxinus velutina Torr.), and Chinese elm (Ulmus parvifolia Jacq.) located within narrow landscaped medians surrounded by asphalt compared with s

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Joshi*, Ambika, Anudnya Kalgutkar, and Nitesh Joshi. "Value of floral diversity of the Sanjay Gandhi National Park (SGNP)." Annals of Plant Sciences 5, no. 02 (2016): 1276. http://dx.doi.org/10.21746/aps.2016.02.004.

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SGNP embraces floral species possessing medicinal, food and commercial values. Owing to over–collection, they have been listed as either being endemic, rare or endangered in Red Data Book. For complete representation of floristic components, seasonal floristic surveys were conducted every fortnight and to understand their value as medicine, food and commercial, information was gained from the local communities and resources from Nature Information Center of the SGNP. The survey identified 84 tree species from 28 families, 17 species of Shrubs from 8 families, 37 species of Herbs from 19 famili

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Kennard, Deborah. "Commercial tree regeneration 6 years after high-intensity burns in a seasonally dry forest in Bolivia." Canadian Journal of Forest Research 34, no. 11 (2004): 2199–207. http://dx.doi.org/10.1139/x04-100.

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The effects of three site-preparation treatments (high-intensity burn, low-intensity burn, and mechanical cleaning with machetes and chainsaws) on the regeneration of commercial tree species, composition and structure of competing vegetation, and soil chemical and structural properties were evaluated in a seasonally dry forest in southeast Bolivia. Six years after controlled burns, the high-intensity burn treatment had the both the highest density and the tallest individuals of shade-intolerant commercial tree species. Competing vegetation was also less dominant in the high-intensity burn trea

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Huang, Yuanyuan, Yuxin Chen, Nadia Castro-Izaguirre, et al. "Impacts of species richness on productivity in a large-scale subtropical forest experiment." Science 362, no. 6410 (2018): 80–83. http://dx.doi.org/10.1126/science.aat6405.

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Biodiversity experiments have shown that species loss reduces ecosystem functioning in grassland. To test whether this result can be extrapolated to forests, the main contributors to terrestrial primary productivity, requires large-scale experiments. We manipulated tree species richness by planting more than 150,000 trees in plots with 1 to 16 species. Simulating multiple extinction scenarios, we found that richness strongly increased stand-level productivity. After 8 years, 16-species mixtures had accumulated over twice the amount of carbon found in average monocultures and similar amounts as

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le Roux, P. J. "The Need for Selection and Breeding of Non-commercial Tree Species." South African Forestry Journal 135, no. 1 (1985): 81–85. http://dx.doi.org/10.1080/00382167.1985.9629615.

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Klos, Ryan J., G. Geoff Wang, Qing-Lai Dang, and Ed W. East. "Taper Equations for Five Major Commercial Tree Species in Manitoba, Canada." Western Journal of Applied Forestry 22, no. 3 (2007): 163–70. http://dx.doi.org/10.1093/wjaf/22.3.163.

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Abstract Kozak's variable exponent taper equation was fitted for balsam poplar (Populus balsamifera L.), trembling aspen (Populus tremuloides Michx.), white spruce (Picea glauca [Moench] Voss), black spruce (Picea mariana [Mill.] B.S.P.), and jack pine (Pinus banksiana Lamb.) in Manitoba. Stem taper variability between two ecozones (i.e., Boreal Shield and Boreal Plains) were tested using the F-test. Regional differences were observed for trembling aspen, white spruce, and jack pine, and for those species, separate ecozone-specific taper equations were developed. However, the gross total volum

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Lacerda, Talles Hudson Souza, Christian Dias Cabacinha, Carlos Alberto Araújo Júnior, Renato Dourado Maia, and Klaus Wesley de Souza Lacerda. "ARTIFICIAL NEURAL NETWORKS FOR ESTIMATING TREE VOLUME IN THE BRAZILIAN SAVANNA." CERNE 23, no. 4 (2017): 483–91. http://dx.doi.org/10.1590/01047760201723042347.

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ABSTRACT This paper seeks to estimate tree volumes of different species from the Brazilian savanna by using artificial neural networks and by making comparisons of results with estimates obtained from traditional volumetric equations. Data was obtained from 15 squared samples of 400 m² in an area of 29.6 ha. In each plot, breast height diameter (D) (diameter at 1.30 m from soil), total height (Ht) and commercial height (Hc) of all individuals with D equals or higher than 3.0 cm were measured. Afterwards, each tree was felled for volume measurement. Huber method was used considering measurement

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Herrick, Owen W., and David A. Gansner. "Forest-Tree Value Growth Rates." Northern Journal of Applied Forestry 2, no. 1 (1985): 11–13. http://dx.doi.org/10.1093/njaf/2.1.11.

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Abstract Rates of growth in the value of standing timber can vary greatly from stand to stand and from tree to tree. Faced with this variation, forest managers need guidelines to help determine financial rates of return for their woodlots. In Pennsylvania, the average annual tree value growth rate between 1965 and 1978 was 1.6%. From analyses of the State's forest inventory data, we developed a general guide needing only a tree's commercial soundness (tree class), species, and diameter to assign average rates of value change ranging from -8.8 to 9.0%. The guide can be used to get a general ind

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Beltrán-Rodríguez, Leonardo, Juan Ignacio Valdez-Hernández, Alfredo Saynes-Vásquez, et al. "Sustaining Medicinal Barks: Survival and Bark Regeneration of Amphipterygium adstringens (Anacardiaceae), a Tropical Tree under Experimental Debarking." Sustainability 13, no. 5 (2021): 2860. http://dx.doi.org/10.3390/su13052860.

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Commercial harvests can threaten tree species harvested for their bark. Amphipterygium adstringens is a dioecious tree, endemic to the tropical dry forests of Mexico, where it is intensively harvested for its medicinal bark. Limited information hinders developing sustainable management strategies for A. adstringens. We assessed bark regeneration for male and female trees, and evaluated the effect of tree sex and diameter, debarking treatments and cutting seasons on bark regeneration and tree survival rates. Bark regeneration was higher for wet season harvested trees (vs. dry), regardless of th

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Jutras, Pierre, Shiv Prasher, and Guy Mehuys. "Appraisal of Key Abiotic Parameters Affecting Street Tree Growth." Arboriculture & Urban Forestry 36, no. 1 (2010): 1–10. http://dx.doi.org/10.48044/jauf.2010.001.

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Street trees must cope with severe environmental conditions. Identification of factors that modulate their survival and growth is a key process for successful management. To estimate these factors, contingency analyses were carried out using abiotic data collected locally for Norway maple (Acer platanoides L.), silver maple (Acer saccharinum L.), hackberry (Celtis occidentalis L.), green ash (Fraxinus pennsylvanica Marsh.), honeylocust (Gleditsia triacanthos L.), littleleaf linden (Tilia cordata Mill.), and Siberian elm (Ulmus pumila L.) trees. Also, comparable analyses were performed on a mer

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Wardani, M., Denny, and A. Susilo. "A Review: Prospective study of non-timber forest product uses in three Meranti species (Shorea spp.)." IOP Conference Series: Earth and Environmental Science 914, no. 1 (2021): 012053. http://dx.doi.org/10.1088/1755-1315/914/1/012053.

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Abstract Meranti (Shorea spp.) is a commercial timber tree species of Indonesian forest potentially to be developed for Non-Timber Forest Products (NTFPs). We explored the NTFPs perspective of three Meranti species, Shorea hopeifolia (F.Heim) Symington, Shorea ovalis (Korth.) Blume, and Shorea balangeran Burk, by identifying the content of phytochemical compounds. Data collection methods include: exploration, identification to obtain the accuracy of the species scientific name, and analysis the phytochemical content using Gas Chromatographic Mass Spectrometer (GCMS) pyrolysis. We revealed the

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Woodard, P. M., D. Needham, W. E. Phillips, and L. F. Constantino. "A Christmas tree market analysis: implications from Alberta, Canada data." Forestry Chronicle 70, no. 4 (1994): 443–48. http://dx.doi.org/10.5558/tfc70443-4.

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The 1990 Christmas tree market in Alberta, Canada was assessed in an attempt to determine the feasibility of growing such trees for local consumption. Almost 5 500 questionnaires were delivered to households and commercial establishments as part of this survey. In addition, many personal interviews were conducted. The information presented pertains to the wholesale and retail sales volumes and values by tree species. The socio-economic background of tree buying consumers and their traditional celebration and purchasing habits are also included. Our results suggest Albertans spent over $7 milli

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Cavender-Bares, Jeannine M., Erik Nelson, Jose Eduardo Meireles, et al. "The hidden value of trees: Quantifying the ecosystem services of tree lineages and their major threats across the contiguous US." PLOS Sustainability and Transformation 1, no. 4 (2022): e0000010. http://dx.doi.org/10.1371/journal.pstr.0000010.

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Trees provide critical contributions to human well-being. They sequester and store greenhouse gasses, filter air pollutants, provide wood, food, and other products, among other benefits. These benefits are threatened by climate change, fires, pests and pathogens. To quantify the current value of the flow of ecosystem services from U.S. trees, and the threats they face, we combine macroevolutionary and economic valuation approaches using spatially explicit data about tree species and lineages. We find that the value of five key ecosystem services with adequate data generated by US trees is $114

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Kumar, Arvind, Narender Kumar, and Rup Narayan. "A Study on Tree Diversity, Population Structure and Soils in a University Campus in an Indian Dry Tropical Region: Implication for Tree Conservation, Exploitation and Carbon Sequestration." Environment and Ecology 43, no. 2 (2025): 413–24. https://doi.org/10.60151/envec/hxls2598.

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This study assessed the tree species diversity and their population structure in Chaudhary Charan Singh University of Meerut. A total of 19922 tree individuals (>10 cm girth) were measured for their girths at breast height. Girth-size distribution of trees in entire campus and that of dominant tree flora were separately analyzed to understand their growth and regeneration status. Physico-chemical characteristics of soils under dominant tree cover were also estimated. Spread over an area of 222 acres, the campus had 128 tree species distributed over 43 plant families. Leucaena leucocephala a

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Chavan, Sangram Bhanudas, Ravinder Singh Dhillon, Chhavi Sirohi, et al. "Carbon Sequestration Potential of Commercial Agroforestry Systems in Indo-Gangetic Plains of India: Poplar and Eucalyptus-Based Agroforestry Systems." Forests 14, no. 3 (2023): 559. http://dx.doi.org/10.3390/f14030559.

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Climate change, land degradation, and desertification lead to the loss of carbon present in the soil and plants. The carbon dioxide (CO2) concentration in the atmosphere has reached 412 ppm. This is a rise of 47% since the start of the industrial period, when the concentration was close to 280 ppm. Therefore, the sequestration of carbon from the atmosphere to earth is the need of the hour. Many scientists have suggested agroforestry as a potent instrument for climate change mitigation as well as to fetch lucrative benefits. The Indian government is also promulgating tree-based systems for incr

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Fernandes, Paul G. "Classification trees for species identification of fish-school echotraces." ICES Journal of Marine Science 66, no. 6 (2009): 1073–80. http://dx.doi.org/10.1093/icesjms/fsp060.

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Abstract Fernandes, P. G. 2009. Classification trees for species identification of fish-school echotraces. – ICES Journal of Marine Science, 66: 1073–1080. Acoustic surveys provide valuable information on the abundance and distribution of many fish species, but are particularly effective for schooling pelagic fish of commercial importance. However, despite recent advances in multifrequency processing, the technique still requires some subjective judgement when allocating the acoustic data, fish-school echotraces, to particular species—the so-called “scrutiny process”. This is assisted by “grou

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Asanok, Lamthai, Rungrawee Taweesuk, and Torlarp Kamyo. "Teak (Tectona grandis Linn. f) and Edaphic Factors Affecting the Regeneration of Woody Species and Their Functional Traits in Economic Forest Plantation, Northern Thailand." International Journal of Forestry Research 2024 (February 26, 2024): 1–13. http://dx.doi.org/10.1155/2024/2385142.

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Improved understanding of relationships among plant traits, stand characteristics, and soil properties can provide insights into the regenerating tree communities of commercial teak plantations. We investigated whether plant traits could be used to predict the natural regeneration of woody species in teak plantations with different soil and stand conditions. Data were collected in fifty 20 m × 20 m plots that were established in teak plantations of varying ages in northern Thailand. We analyzed differences in stand characteristics, soil properties, and community-level functional traits among s

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Zeidler, Aleš, Vlastimil Borůvka, Jiří Remeš, and Karel Pulkrab. "Heat-Treated Wood from Grand Fir Provides the Same Quality Compared to Silver Fir." Forests 13, no. 10 (2022): 1542. http://dx.doi.org/10.3390/f13101542.

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Grand fir (Abies grandis/Dougl. ex D. Don/Lindl.) represents the North American species that has the potential to replace and complement to some extent several commercial European species, in particular, Norway spruce and silver fir. This is not only due to its high production potential but also because of its favorable effect on the soil compared to spruce or pine. We tested sample trees from these tree species growing in the same location for physical and mechanical wood properties and evaluated the effect of the thermal treatment (180 °C and 200 °C) on their wood. Wood density, swelling, su

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Franklin, Steven E. "Pixel- and object-based multispectral classification of forest tree species from small unmanned aerial vehicles." Journal of Unmanned Vehicle Systems 6, no. 4 (2018): 195–211. http://dx.doi.org/10.1139/juvs-2017-0022.

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Forest inventory, monitoring, and assessment requires accurate tree species identification and mapping. Recent experiences with multispectral data from small fixed-wing and rotary blade unmanned aerial vehicles (UAVs) suggest a role for this technology in the emerging paradigm of enhanced forest inventory (EFI). In this paper, pixel-based and object-based image analysis (OBIA) methods were compared in UAV-based tree species classification of nine commercial tree species in mature eastern Ontario mixedwood forests. Unsupervised clustering and supervised classification of tree crown pixels yield

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