Floresta最新文献_第6页

COLORED AREA, GROWTH-RING WIDTH, AND LATEWOOD PERCENTAGE IN HYBRID PINE F1 INTA-PINDO 杂交松F1叶片的着色面积、生长宽度和晚材率

Floresta Pub Date : 2023-03-31 DOI: 10.5380/rf.v53i2.84675

Rosa Angela Winck, Lucía Raquel Winck, Ector C. Belaber, Diego Rolando Aquino, M. C. Area, M. E. Gauchat

引用次数: 1

PHYSICAL-MECHANICAL WOOD PROPERTIES FROM INVASIVE EXOTIC SPECIES OF ATLANTIC FOREST 大西洋森林外来入侵物种木材的物理力学特性

Floresta Pub Date : 2023-03-31 DOI: 10.5380/rf.v53i2.75914

Carolina Nogueira Xavier, Raphaelly De Oliveira Ferreira, P.H.P.R. De silva, José Reinaldo Moreira da Silva, Andrea Vanini, A. M. Carvalho

{"title":"PHYSICAL-MECHANICAL WOOD PROPERTIES FROM INVASIVE EXOTIC SPECIES OF ATLANTIC FOREST","authors":"Carolina Nogueira Xavier, Raphaelly De Oliveira Ferreira, P.H.P.R. De silva, José Reinaldo Moreira da Silva, Andrea Vanini, A. M. Carvalho","doi":"10.5380/rf.v53i2.75914","DOIUrl":"https://doi.org/10.5380/rf.v53i2.75914","url":null,"abstract":"Invasive exotic tree species cause several problems to the world biota. Removing these trees is important for restoring ecosystem balance. However, after the removal, there is a concern regarding the proper destination of the generated materials. The lack of knowledge about the wood characteristics makes it difficult to recommend for the most appropriate uses, which leads to a low added value of the product. The aim of the study was to assess the physical and mechanical wood properties and indicate the alternatives for using wood from exotic invasive species at the Fiocruz Mata Atlântica Biological Station, Rio de Janeiro - RJ. The three species studied were Artocarpus heterophyllus Lamarck (Jackfruit), Syzygium cumini (L.) Skeels (Java plum) and Clitoria fairchildiana R.A. Howard (Sombreiro). The physical and mechanical wood properties were determined in three distinct regions, denominated central, intermediate and external, ranging from pith-bark direction. The wood of Artocarpus heterophyllus had low basic density, retractions were lower in the central region, and the intermediate region had the highest mechanical resistance. The Syzygium cumini wood had medium density, the mechanical properties increased in the pith-bark direction, and the radial and volumetric retractions were lower in the central region. Clitoria fairchildiana wood had medium density and had the lowest mechanical resistance from the species evaluated. The three species have appropriate physical properties for the furniture sector, and the Syzygium cumini wood presented adequate mechanical resistance for civil construction.","PeriodicalId":53573,"journal":{"name":"Floresta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44440083","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

COMPATIBILITY BETWEEN FOREST SPECIES, SOIL AREA, AND ACCESSIBILITY ON SIDEWALKS 森林种类、土壤面积和人行道可达性之间的兼容性

Floresta Pub Date : 2023-03-31 DOI: 10.5380/rf.v53i2.84028

Elisiane Vendruscolo, M. Zanon, R. Bobrowski

{"title":"COMPATIBILITY BETWEEN FOREST SPECIES, SOIL AREA, AND ACCESSIBILITY ON SIDEWALKS","authors":"Elisiane Vendruscolo, M. Zanon, R. Bobrowski","doi":"10.5380/rf.v53i2.84028","DOIUrl":"https://doi.org/10.5380/rf.v53i2.84028","url":null,"abstract":"The compatibility between the built environment and trees is also a challenge for urban planning. However, there are few guidelines related to the space for tree growth on sidewalks. This research aimed to analyze the space occupied by trees on sidewalks in the city of Frederico Westphalen, RS, Brazil. We used data from 400 trees of 10 species (dendrometric and qualitative variables) and from the urban structure (width of sidewalks and tree bed area) to analyze the relationship between the species according to the soil capacity and pedestrian’s accessibility. It was found that 90.25% of the trees are in places where the sidewalks promote accessibility to pedestrians and that 60.25% of them tree bed areas with adequate capacity, being possible to increase their size to improve the development of the trees in 39.75% of the cases. Regarding the amount of soil required for each tree, it was found that most species (72.25%) would not have an adequate amount of soil, (Situation 1 – sidewalk width x 4). For Situation 2 (tree bed width x 1), 100% of the individuals would not have an adequate amount of soil. We concluded that the method to evaluate the compatibility between soil area and sidewalk accessibility is easy to replicate and helpful for studies on urban trees and urban planning.","PeriodicalId":53573,"journal":{"name":"Floresta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47633630","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

DETERMINATION OF E. benthamii PROPERTIES BY INFRARED SPECTROSCOPY AND PLS 红外光谱和PLS法测定苯并咪的性质

Floresta Pub Date : 2023-03-31 DOI: 10.5380/rf.v53i2.84750

Cristiane Carla Benin, L. F. Watzlawick, V. A. de Lima

{"title":"DETERMINATION OF E. benthamii PROPERTIES BY INFRARED SPECTROSCOPY AND PLS","authors":"Cristiane Carla Benin, L. F. Watzlawick, V. A. de Lima","doi":"10.5380/rf.v53i2.84750","DOIUrl":"https://doi.org/10.5380/rf.v53i2.84750","url":null,"abstract":"Considering the interest in the Eucalyptus benthamii species and the search for alternatives to determine some physical properties in a fast and reliable way, the objective of this study was to build multivariate calibration models through the near infrared spectroscopy (NIR) technique and partial least squares regression (PLS) for wood basic density (BD) and chip moisture (U). Trees were sampled in five diametric classes and used to evaluate DB, as a function of 3 ages and 3 production regions of E. benthamii. We considered only plantations at 7 years of age in the harvest phase and chip samples considering pre-defined intervals of ten days, from the date of tree harvest to 90 days, in two seasons of the year (winter and spring) for moisture analysis. For DB and U, NIR models were calibrated and validated using partial least squares (PLS) regression. Calibration models were evaluated by correlation coefficients (R²), root mean square error (RMSE), and variance performance ratio (RPD). The models for near infrared (NIR) spectroscopy showed R² values ranging from 0.60 to 0.68 for basic density and 0.72 for moisture. The best model for DB observed was the one that considered only the DAP samples. It was concluded that the NIR technique was suitable for estimating the properties of moisture and wood density in this evaluated species, E. benthamii. ","PeriodicalId":53573,"journal":{"name":"Floresta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48777921","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

GEOSPATIAL DISTRIBUTION OF FOREST SPECIES IN THE BOTANICAL GARDEN OF RECIFE, PERNAMBUCO, BRAZIL 巴西伯南布哥省累西腓植物园森林物种的地理空间分布

Floresta Pub Date : 2023-03-31 DOI: 10.5380/rf.v53i2.79426

Débora de Melo Almeida, F. J. Freire, Marcos Vinícius da Silva, Uilian do Nascimento Barbosa, D. M. Cavalcante, E. A. Silva

{"title":"GEOSPATIAL DISTRIBUTION OF FOREST SPECIES IN THE BOTANICAL GARDEN OF RECIFE, PERNAMBUCO, BRAZIL","authors":"Débora de Melo Almeida, F. J. Freire, Marcos Vinícius da Silva, Uilian do Nascimento Barbosa, D. M. Cavalcante, E. A. Silva","doi":"10.5380/rf.v53i2.79426","DOIUrl":"https://doi.org/10.5380/rf.v53i2.79426","url":null,"abstract":"The adoption of appropriate strategies for the conservation and management of forest ecosystems associated with the Atlantic Forest depends on understanding the pattern of spatial distribution of forest species, mainly in protected areas. Thus, this study aimed to evaluate the geospatial distribution of forest species in a fragment of Atlantic Forest (Lowland Dense Ombrophilous Forest) in the Botanical Garden of Recife, Pernambuco, Brazil. The phytosociological study was carried out by the plot method, with 40 plots of 10 m x 25 m, systematically distributed, where all living individuals that showed circumference at 1.3 m above the ground ≥ 15 cm were identified and georeferenced. To identify the existence of floristic similarity between the plots, the obtained data were subjected to hierarchical cluster analysis. The spatial variability of forest species was characterized using geostatistical analysis. The data were interpolated by kriging, followed by the construction of thematic maps of spatial distribution. Hierarchical cluster analysis revealed the formation of two groups of plots. The forest species Artocarpus heterophyllus, Dialium guianense, Helicostylis tomentosa, Hevea brasiliensis, Pouteria durlandii and Thyrsordium spruceanum showed spatial dependence. The use of geostatistics allowed visualizing the spatial distribution arrangements and identifying the concentration sites of these species. Information on the geospatial distribution of forest species can be used for the preservation, conservation and management of forest remnants.","PeriodicalId":53573,"journal":{"name":"Floresta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44421519","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

ANALYSIS OF SEASONAL AND CYCLICAL VARIATION OF THE BRAZILIAN CELLULOSE PRICE IN THE USA MARKET FOR THE PERIOD OF 1997 TO 2018 1997~2018年巴西纤维素在美国市场的季节性和周期性变化分析

Floresta Pub Date : 2023-03-31 DOI: 10.5380/rf.v53i2.67341

Jaqueline De Paula Heimann, Letícia Helena Ribeiro Da Cunha, V. Hoeflich, João Carlos Garzel Leodoro Da Silva, Anadalvo Juazeiro Dos Santos

{"title":"ANALYSIS OF SEASONAL AND CYCLICAL VARIATION OF THE BRAZILIAN CELLULOSE PRICE IN THE USA MARKET FOR THE PERIOD OF 1997 TO 2018","authors":"Jaqueline De Paula Heimann, Letícia Helena Ribeiro Da Cunha, V. Hoeflich, João Carlos Garzel Leodoro Da Silva, Anadalvo Juazeiro Dos Santos","doi":"10.5380/rf.v53i2.67341","DOIUrl":"https://doi.org/10.5380/rf.v53i2.67341","url":null,"abstract":"The aim of this work was to analyse the seasonality in the price of the Brazilian pulp that is exported to the United States of America in order to support setting strategies and on the decision-making processes of the Brazilian companies in the international market framework. Data from the period between 1997 and 2018, related to the quantity and the value of exportation used in this work, was collected from the ALICE-WEB platform and then deflated using the month of April of 2018 as a base period. The results of the study show an instability in the prices of Brazilian pulp in the United States market, presenting four cycles with a non-periodic length and another fifth cycle that begins with a tendency of price recovery. The seasonal price movement tends to be greater during the second semester of each year, increasing mostly in the month of November. Therefore, the exportation of Brazilian pulp to the United States must be carried out, whenever possible, in the second semester, when the prices are higher, and stock the production from other months as well as look for alternative markets, having in mind a higher profitability for the companies.","PeriodicalId":53573,"journal":{"name":"Floresta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43208213","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

NATURAL REGENERATION DYNAMICS IN CAATINGA TREE SUBMITTED TO FOREST MANAGEMENT 卡廷加树的自然更新动态提交给森林管理

Floresta Pub Date : 2023-03-31 DOI: 10.5380/rf.v53i2.85909

Anabela Costa Santos, A. de Paula, Patrícia Anjos Anjos Bittencourt Barreto-Garci, Michele Martins Corrêa, Jennifer Rafaela Bombonatti

引用次数: 0

BIOACTIVE COMPOUNDS IN DIASPORES OF Astronium urundeuva (M.Allemão) Engl. FOR QUALITY MAINTENANCE DURING STORAGE 乌伦杜瓦天文藻（M.Allemão）孢子中的生物活性化合物。用于存储期间的质量维护

Floresta Pub Date : 2023-03-31 DOI: 10.5380/rf.v53i2.84885

Ritielly Laiany Carvalho Senigalia, M. Coelho, D. Kratz, E. C. Camili, É. C. Souza, F. C. Félix

{"title":"BIOACTIVE COMPOUNDS IN DIASPORES OF Astronium urundeuva (M.Allemão) Engl. FOR QUALITY MAINTENANCE DURING STORAGE","authors":"Ritielly Laiany Carvalho Senigalia, M. Coelho, D. Kratz, E. C. Camili, É. C. Souza, F. C. Félix","doi":"10.5380/rf.v53i2.84885","DOIUrl":"https://doi.org/10.5380/rf.v53i2.84885","url":null,"abstract":"The success of seed production and marketing depends on ideal conditions for storage. Some forest species have seed conservation problems due to the high incidence of fungi that reduce physiological quality. Thus, the objective was to evaluate the effectiveness of the application of bioactive compounds in diaspores of Astronium urundeuva (M.Allemão) Engl. (Anacardiaceae) to maintain physiological quality and reduce the incidence of fungi during storage. For this, two factorial trials were set up: (i) application of four essential oils (cinnamon, clove, orange and melaleuca) at five concentrations (0.00, 1.25, 2.50, 3.75 and 5.0 mL.kg-1); and (ii) five plant extracts (clove, cinnamon, quina, garlic and lemongrass) at five concentrations (0%, 25%, 50%, 75% and 100%). Diaspores were evaluated at 0, 30, 60, 90, 120, 150 and 180 days for germination, seed vigor and fungal incidence. The essential oils of clove (4.6 mL.kg-1) and melaleuca (3.7 mL.kg-1) and plant extracts of clove (71%) and lemongrass (73%) can be applied to maintain physiological quality and reduce the incidence of fungi during the storage of A. urundeuva diaspores. In addition to these, the essential oils of cinnamon (3.8 mL.kg-1) and orange (4.0 mL.kg-1) and plant extracts of cinnamon (72%) and quina (74%) can be used as an alternative to synthetic fungicide. Therefore, the application of products based on natural bioactive compounds is an alternative to the use of chemicals in sanitary control during the storage of A. urundeuva seeds.","PeriodicalId":53573,"journal":{"name":"Floresta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44770752","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

GROWTH PROMOTION OF Schizolobium parahyba var. amazonicum SEEDLINGS USING STRAINS OF Trichoderma spp. UNDER PHOSPHORUS RATES 木霉菌株在磷胁迫下对亚马逊Schizolobium parahyba var.amazonicum幼苗生长的促进作用

Floresta Pub Date : 2023-03-31 DOI: 10.5380/rf.v53i2.82498

Luís Augusto Batista De Oliveira, Cecília Leão Pereira Resende, P. H. Cintra, Daniel Diego Costa Carvalho, F. Rodrigues

引用次数: 0

SAMPLING USING THE BITTERLICH METHOD IN Pinus taeda L. PLANTATIONS WITH DISTINCT MANAGEMENT SYSTEMS 不同管理系统下火炬松人工林的BITTERLICH法取样

Floresta Pub Date : 2023-01-18 DOI: 10.5380/rf.v53i1.85482

Norton Machado, T. F. Stepka, Marcos Filipe Nicoletti

{"title":"SAMPLING USING THE BITTERLICH METHOD IN Pinus taeda L. PLANTATIONS WITH DISTINCT MANAGEMENT SYSTEMS","authors":"Norton Machado, T. F. Stepka, Marcos Filipe Nicoletti","doi":"10.5380/rf.v53i1.85482","DOIUrl":"https://doi.org/10.5380/rf.v53i1.85482","url":null,"abstract":"The Bitterlich method was studied with multiple basal area factors (BAF) in 3 Pinus taeda L. plantations located in the Midwest of Santa Catarina, Brazil using different management regimes: without thinning (1344 trees.ha-1), with one thinning (789 trees.ha-1), and with two thinnings (475 trees.ha-1),. Using the parameters obtained from censuses, we sought to verify the data from different sample treatments for the variables V.ha-1, G.ha-1, N.ha-1 and “d” through a completely randomized design for each management regime and observing the precision obtained by the sampling error and the accuracy detected by the real error. It was observed that the variable “d” was less impacted by the change in the basal area factor (BAF), but the estimates of V.ha-1, G.ha-1 and N.ha-1 were more consistent (precision and accuracy) using factors equal to or less than 5, mainly in thinned areas. Even with no significant differences in any BAF in the 3 experiments, the sampling performed with BAF greater than 5 showed contrasting results in the managed areas depending on the BAF used. Sampling precision is influenced by BAFs, decreasing with the reduction in the number of trees counted within the Bitterlich sampling unit, a direct consequence of the BAF increase. Sampling errors were always overestimated, regardless of the dendrometric variable or area management. Even the largest differences between estimates and parameters being identified in BAF greater than or equal to 5, the experiment indicated the use of any BAF, with the largest requiring greater sampling intensity.","PeriodicalId":53573,"journal":{"name":"Floresta","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45910922","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