TreeDimensional最新文献

Models for estimating the diameter at breast height as a function of the diameter of the stump Pinus taeda L. 估算胸径与树桩直径函数关系的模型台松

TreeDimensional Pub Date : 2024-07-01 DOI: 10.55746/treed.2024.06.041

Guilherme Fortkamp, T. F. Stepka, Marcos Filipe Nicoletti, Leandro de Oliveira Wolff, D. L. C. D. Miranda, G. Lisboa

{"title":"Models for estimating the diameter at breast height as a function of the diameter of the stump Pinus taeda L.","authors":"Guilherme Fortkamp, T. F. Stepka, Marcos Filipe Nicoletti, Leandro de Oliveira Wolff, D. L. C. D. Miranda, G. Lisboa","doi":"10.55746/treed.2024.06.041","DOIUrl":"https://doi.org/10.55746/treed.2024.06.041","url":null,"abstract":"The study addressed the use of models to estimate dendrometric variables in a commercial plantation of Pinus taeda L. Allometric relationships were applied to estimate diameter at breast height (DBH) based on stump diameter (SD), providing a mathematical approach to relate these two variables. Additionally, a \"conventional\" measurement exclusively of DBH was conducted to compare the values obtained with traditional approach to the results of the proposed modeling. The study also explored hypsometric relationships to estimate tree height as a function of DBH, enabling an efficient and economical assessment of tree characteristics in the forest stand. Furthermore, a forest census was conducted in the area, allowing a comprehensive comparison between the methods used and the actual data from the forest stand, reinforcing the importance of these approaches for effective forest resource management. The results showed that the models were effective in estimating volume, basal area, and the number of trees per hectare, with consistent results compared to the forest census. Therefore, the study concludes that stump inventory methods are effective in estimating dendrometric data in Pinus taeda L. plantations, even after forest cutting events, thereby supporting forestry experts in conducting precise assessments in areas with completed timber harvesting and in making informed decisions. This contributes to the effective and sustainable management of forest resources and the enforcement of laws in cases of environmental or economic damage.","PeriodicalId":507308,"journal":{"name":"TreeDimensional","volume":"11 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141698141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable forest management for timber and non-timber resources in the Amazon forest under concession 特许亚马逊森林木材和非木材资源的可持续森林管理

TreeDimensional Pub Date : 2024-07-01 DOI: 10.55746/treed.2024.06.050

Rayane Andrade Moraes, X. M. D. Oliveira, R. C. Mayrinck, S. V. Kohler, Selma Lopes Goulart

{"title":"Sustainable forest management for timber and non-timber resources in the Amazon forest under concession","authors":"Rayane Andrade Moraes, X. M. D. Oliveira, R. C. Mayrinck, S. V. Kohler, Selma Lopes Goulart","doi":"10.55746/treed.2024.06.050","DOIUrl":"https://doi.org/10.55746/treed.2024.06.050","url":null,"abstract":"The Amazon biome is one of the largest in terms of area and biodiversity. It provides impressive ecosystem services that are crucial to planetary functions, for example global precipitation patterns. Besides, it provides important timber and non-timber products that are crucial for local communities and even international markets. The aim of this study was to conduct a phytosociological analysis to select the species with important ecological functions and with commercial interest for timber and non-timber forest products (NTFP). Forest inventory data were collected were collected from 4 Annual Production Units (APUs) at the Paru State Forest. The 5 species with highest Importance Value Index (IVI) were: Chrysophyllum lucentifolium, Micropholis venulosa, Handroanthus serratifolius, Handroanthus impetiginosus and Manilkara huberi. These species presented commercial volume in the diameter classes of 40 to ≥ 170 cm. The species providing NTFP (Carapa guianensis, Bertholletia excelsa and Copaifera guianensis) presented IVI in the 1, 9, and 34 positions, respectively. The species Carapa guianensis presented more individuals in the 40 and 80 DBH classes. Bertholletia excelsa was the only one presenting individuals with DBHs exceeding 140 cm. Copaifera guianensis was the less common species. We concluded that all the 5 species producing timber are viable for sustainable forest management. Regarding the non-timber forest species, forest management need to be focused in Carapa guianensis and Bertholletia excelsa.","PeriodicalId":507308,"journal":{"name":"TreeDimensional","volume":"20 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141704806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Longitudinal and Radial Variation in Aspidosperma pyrifolium Wood Density Aspidosperma pyrifolium 木材密度的纵向和径向变化

TreeDimensional Pub Date : 2024-04-19 DOI: 10.55746/treed.2024.04.015

Ramona Rodrigues Amaro de Oliveira, Joana Alice Galdino de Souza, Ana Karla Vieira da Silva, Márcia Ellen Chagas dos Santos, Edgley Alves de Oliveira Paula, Rafael Rodolfo de Melo

{"title":"Longitudinal and Radial Variation in Aspidosperma pyrifolium Wood Density","authors":"Ramona Rodrigues Amaro de Oliveira, Joana Alice Galdino de Souza, Ana Karla Vieira da Silva, Márcia Ellen Chagas dos Santos, Edgley Alves de Oliveira Paula, Rafael Rodolfo de Melo","doi":"10.55746/treed.2024.04.015","DOIUrl":"https://doi.org/10.55746/treed.2024.04.015","url":null,"abstract":"The Caatinga is a biodiversity biome. However, it lacks information about the timber potential of native vegetation. Aspidosperma pyrifolium Mart. is a native species with diverse qualities and uses for wood. Can assess the quality of wood based on its technological properties. Therefore, to determine the variability of the main physical parameters of A. pyrifolium wood contributes to the diagnosis of its correct use, in addition to expanding knowledge about plant species from the Caatinga. This research aims to evaluate the physical parameters of A. pyrifolium wood, and the variation in basic density in the longitudinal and radial directions. Collected material in the Governador Dix-Sept Rosado, Rio Grande do Norte State. Three trees without apparent defects and DBH between 8 cm and 12 cm were felled. Removed five 10cm thick discs and positioned along the shaft at 0% (base), 25%, 50%, 75%, and 100% of the total height. In the laboratory, the specimens were prepared and divided in the radial direction (pith, intermediate, and bark) to characterize the basic density, moisture content, and porosity. The average density was 0.68 g/cm³, classified as moderately heavy wood, varying in both directions, with no interaction between the factors. A decreasing behavior of basic density was observed in the base-top and pith-to-bark direction. The average results for equilibrium moisture content and porosity were 8.46% and 55.58%, respectively.","PeriodicalId":507308,"journal":{"name":"TreeDimensional","volume":" 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140684536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the Energy Use of Pruning Dipteryx alata Trees 评估修剪珙桐树的能耗

TreeDimensional Pub Date : 2024-03-14 DOI: 10.55746/treed.2024.03.013

Rebeca Silva Lisboa, Carlos Roberto Sette Jr., Mariana Pires Franco

{"title":"Evaluation of the Energy Use of Pruning Dipteryx alata Trees","authors":"Rebeca Silva Lisboa, Carlos Roberto Sette Jr., Mariana Pires Franco","doi":"10.55746/treed.2024.03.013","DOIUrl":"https://doi.org/10.55746/treed.2024.03.013","url":null,"abstract":"Pruning is equivalent to the removal of whole branches or parts, living or dead, of a plant, to promote balance in the development of the species, therefore, the generation of waste portrays an indispensable and ever-present consequence. The residues derived from pruning come from silvicultural treatments and evidently have great potential to be used in energy generation. Briquetting, in addition to its energy advantage and practicality, collaborates with the mitigation of environmental impacts from encouraging the use of renewable energies to reducing the emission of greenhouse gases, as they are strongly recommended for replacing fossil coal. The main objective of this work was to evaluate the possibility, related to quality and productivity, of the energy use of residual biomass from urban pruning of Dipteryx alata, focusing on the production of briquettes, thus encouraging further studies related to native species of the Cerrado and the use of renewable energy. The contents of volatile materials, ash and fixed carbon, higher calorific value, basic and energetic density were determined, and briquettes were produced in a laboratory briquetting machine. The quality of the briquettes was determined through physical-mechanical analyses: apparent density, durability, tensile strength by diametral compression and expansion. The energy density of the biomass had a considerable increase after briquetting, confirming the increase in energy concentration per unit volume in densified materials. Therefore, it was concluded that the use of urban pruning residues of Dipteryx alata proved to be suitable for making briquettes to produce renewable and sustainable energy.","PeriodicalId":507308,"journal":{"name":"TreeDimensional","volume":"5 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140244303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0