Pub Date : 2021-01-01DOI: 10.4067/s0717-92002021000300365
Roberto Contreras Díaz, Liesbeth van den Brink, María José Navarrete Fuentes, Mariana Arias Aburto
{"title":"Characterization of the complete chloroplast genome of Prosopis tamarugo (Prosopis, Leguminosae), an endangered endemic tree species from the Atacama Desert","authors":"Roberto Contreras Díaz, Liesbeth van den Brink, María José Navarrete Fuentes, Mariana Arias Aburto","doi":"10.4067/s0717-92002021000300365","DOIUrl":"https://doi.org/10.4067/s0717-92002021000300365","url":null,"abstract":"","PeriodicalId":55338,"journal":{"name":"BOSQUE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70491697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4067/s0717-92002021000300295
Ariel Isaías Ayma Romay, Horacio E. Bown
*Autor de correspondencia: a Universidad de Chile, Programa de Doctorado en Ciencias Silvoagropecuarias y Veterinarias, Campus Sur, Santa Rosa 11315, Santiago, Chile, tel: 56-29785762, ariel.isaias.aymar@gmail.com b Universidad Católica Boliviana San Pablo, Departamento de Ciencias Exactas e Ingeniería, Centro de Investigación en Ciencias e Ingeniería (CICEI), M. Márquez esq. Plaza Trigo, Cochabamba, Bolivia. tel: 591 – 4 4291145, aayma@ucb.edu.bo c Universidad de Chile, Facultad de Ciencias Forestales y Conservación de la Naturaleza, Santiago, Chile, hbown@uchile.cl
*书信的作者:智利大学博士生Silvoagropecuarias科学项目、南校区、兽医和Santa Rosa 11315,智利圣地亚哥,tel: 56-29785762 ariel.isaias.aymar@gmail.com b部玻利维亚圣保罗天主教大学自然科学和工程科学和工程研究中心(CICEI), m . marquez广场小麦,玻利维亚科恰班巴,。电话:591 - 4 4291145,aayma@ucb.edu.bo c智利大学森林科学与自然保护学院，智利圣地亚哥，hbown@uchile.cl
{"title":"Coordinación de estrategias de uso de los recursos de especies leñosas del matorral de Chile: Relaciones entre rasgos funcionales de copa, hoja, tallo, raíz y fenología","authors":"Ariel Isaías Ayma Romay, Horacio E. Bown","doi":"10.4067/s0717-92002021000300295","DOIUrl":"https://doi.org/10.4067/s0717-92002021000300295","url":null,"abstract":"*Autor de correspondencia: a Universidad de Chile, Programa de Doctorado en Ciencias Silvoagropecuarias y Veterinarias, Campus Sur, Santa Rosa 11315, Santiago, Chile, tel: 56-29785762, ariel.isaias.aymar@gmail.com b Universidad Católica Boliviana San Pablo, Departamento de Ciencias Exactas e Ingeniería, Centro de Investigación en Ciencias e Ingeniería (CICEI), M. Márquez esq. Plaza Trigo, Cochabamba, Bolivia. tel: 591 – 4 4291145, aayma@ucb.edu.bo c Universidad de Chile, Facultad de Ciencias Forestales y Conservación de la Naturaleza, Santiago, Chile, hbown@uchile.cl","PeriodicalId":55338,"journal":{"name":"BOSQUE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70491519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
variation was found among individuals (90.78 %, P = 0.0001) rather than among populations of P. chilensis (0.16 %, P = 1.000). The level of genetic differentiation of P. chilensis was very low (FST = 0.0015) among the four populations (LAPO, HUPE, ANDE and ENDO). The STRUCTURE analysis, the Mantel test and the EMD analysis indicate that all individuals are part of a single structure, there being no evidence of barriers that generate isolation. Therefore, in the future it will be necessary to carry out more population studies of this species, in such a way to detect variation and expand the genetic groups to maintain genetic richness and biodiversity of the ecosystems. microsatellite
{"title":"Análisis de diversidad y estructura genética de poblaciones de Prosopis chilensis entre las provincias de Chacabuco y San Felipe de Aconcagua, usando marcadores moleculares microsatélites","authors":"Roberto César Contreras Diaz, Marlene Verónica González González, Fernanda Aguayo Cruces, Sandra Elizabeth Gacitúa Arias, Vincenzo Porcile Saavedra","doi":"10.4067/s0717-92002021000300371","DOIUrl":"https://doi.org/10.4067/s0717-92002021000300371","url":null,"abstract":"variation was found among individuals (90.78 %, P = 0.0001) rather than among populations of P. chilensis (0.16 %, P = 1.000). The level of genetic differentiation of P. chilensis was very low (FST = 0.0015) among the four populations (LAPO, HUPE, ANDE and ENDO). The STRUCTURE analysis, the Mantel test and the EMD analysis indicate that all individuals are part of a single structure, there being no evidence of barriers that generate isolation. Therefore, in the future it will be necessary to carry out more population studies of this species, in such a way to detect variation and expand the genetic groups to maintain genetic richness and biodiversity of the ecosystems. microsatellite","PeriodicalId":55338,"journal":{"name":"BOSQUE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70491909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4067/s0717-92002021000300353
Edilaine Duarte, P. Higuchi, A. C. da Silva, Marcos Eduardo Lopes da Costa Guerra Sobral, R. Bortoluzzi, Jaime Antonio de Almeida, J. G. Larsen, Juliana Pizutti Dallabrida, Luran Monteiro Muzeka, Jéssica Thalheimer de Aguiar, Tarik Cuchi
{"title":"Key factors affecting succession in upper montane forest areas of \"Planalto Sul Catarinense\" Region, Brazil","authors":"Edilaine Duarte, P. Higuchi, A. C. da Silva, Marcos Eduardo Lopes da Costa Guerra Sobral, R. Bortoluzzi, Jaime Antonio de Almeida, J. G. Larsen, Juliana Pizutti Dallabrida, Luran Monteiro Muzeka, Jéssica Thalheimer de Aguiar, Tarik Cuchi","doi":"10.4067/s0717-92002021000300353","DOIUrl":"https://doi.org/10.4067/s0717-92002021000300353","url":null,"abstract":"","PeriodicalId":55338,"journal":{"name":"BOSQUE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70492080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4067/s0717-92002021000300383
Shayeste Salimi, Javad Eshaghi Rad, M. Erfanian, A. Alijanpour
One of the most important issues in forest management is preservation and development of biodiversity. This study aims at estimating richness, evenness and species diversity of woody plants in Arasbaran Protected Area (East Azerbaijan Province, Iran) using Landsat 8 OLI satellite images based on Multiple Linear Regression (MLR) and Classification and Regression Trees (CART) models. This study was performed in an elevation range of 1,000 1,850 m. A total of 130 samples were selected based on physiographic factors. In each sampling plot, number and type of dominant tree species in the canopy were recorded. Statistical modeling was carried out by calibrating MLR and CART models. The R-squared values of MLR models were in the range of 0.10 0.24 for predicting richness, evenness and Shannon and Simpson’s species diversity indices based on greenness as the only predictor variable (other variables were excluded from MLR models). The R-squared values of CART models were equal to 0.21, 0.42, 0.41 and 0.42, respectively. Validation of the results indicated that the CART model had a relatively better performance compared to MLR model. Overall, both methods could not estimate species richness and diversity very precisely based on Landsat 8 OLI Satellite data in the region suggesting the necessity to use high-resolution satellite data for the best evaluation of forests diversity indices in mountainous forests.
{"title":"Estimation of woody species richness and diversity using Landsat 8 OLI Satellite images","authors":"Shayeste Salimi, Javad Eshaghi Rad, M. Erfanian, A. Alijanpour","doi":"10.4067/s0717-92002021000300383","DOIUrl":"https://doi.org/10.4067/s0717-92002021000300383","url":null,"abstract":"One of the most important issues in forest management is preservation and development of biodiversity. This study aims at estimating richness, evenness and species diversity of woody plants in Arasbaran Protected Area (East Azerbaijan Province, Iran) using Landsat 8 OLI satellite images based on Multiple Linear Regression (MLR) and Classification and Regression Trees (CART) models. This study was performed in an elevation range of 1,000 1,850 m. A total of 130 samples were selected based on physiographic factors. In each sampling plot, number and type of dominant tree species in the canopy were recorded. Statistical modeling was carried out by calibrating MLR and CART models. The R-squared values of MLR models were in the range of 0.10 0.24 for predicting richness, evenness and Shannon and Simpson’s species diversity indices based on greenness as the only predictor variable (other variables were excluded from MLR models). The R-squared values of CART models were equal to 0.21, 0.42, 0.41 and 0.42, respectively. Validation of the results indicated that the CART model had a relatively better performance compared to MLR model. Overall, both methods could not estimate species richness and diversity very precisely based on Landsat 8 OLI Satellite data in the region suggesting the necessity to use high-resolution satellite data for the best evaluation of forests diversity indices in mountainous forests.","PeriodicalId":55338,"journal":{"name":"BOSQUE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70491667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4067/s0717-92002021000300333
M. Silveira, A. C. da Silva, Edilaine Duarte, Luran Monteiro Muzeka, J. G. Larsen, Vanderlei dos Santos, Queli Cristina Lovatel, P. Higuchi
Ecological succession is one of the most important processes in forest ecosystems, still poorly understood in the highland Araucaria forests of Southern Brazil. Here we investigated this process by describing functional composition changes in response to a vegetation successional mosaic in four forest fragments in the municipality of Urubici, State of Santa Catarina, Brazil. Two fragments were classified as in advanced stage of succession and two were classified in early stage. The following functional traits were determined: wood density, leaf area, specific leaf area, dispersal syndrome and leaf phenology. For each fragment, we determined the community weighted mean (CWM) and the functional diversity (RaoQ). Data were analyzed by descriptive statistics, t and Mann-Whitney tests and Principal Components Analysis. We found that the successional stage is a relevant source of functional heterogeneity. At the advanced-successional stage, tree communities have harder woods, more membranous and semi-deciduous leaves and higher functional diversity. Conversely, at the early successional stages, forests have softer wood, more coriaceous leaves and lower functional diversity. We concluded that the studied forests showed a high functional composition heterogeneity, partially determined by a successional mosaic. While perennial species with lower values of specific leaf area and wood density predominated in the early successional areas, semi-deciduous species with higher values of specific leaf area and wood density prevailed in the late successional ones.
{"title":"Functional composition of subtropical highland forests in different successional stages in southern Brazil","authors":"M. Silveira, A. C. da Silva, Edilaine Duarte, Luran Monteiro Muzeka, J. G. Larsen, Vanderlei dos Santos, Queli Cristina Lovatel, P. Higuchi","doi":"10.4067/s0717-92002021000300333","DOIUrl":"https://doi.org/10.4067/s0717-92002021000300333","url":null,"abstract":"Ecological succession is one of the most important processes in forest ecosystems, still poorly understood in the highland Araucaria forests of Southern Brazil. Here we investigated this process by describing functional composition changes in response to a vegetation successional mosaic in four forest fragments in the municipality of Urubici, State of Santa Catarina, Brazil. Two fragments were classified as in advanced stage of succession and two were classified in early stage. The following functional traits were determined: wood density, leaf area, specific leaf area, dispersal syndrome and leaf phenology. For each fragment, we determined the community weighted mean (CWM) and the functional diversity (RaoQ). Data were analyzed by descriptive statistics, t and Mann-Whitney tests and Principal Components Analysis. We found that the successional stage is a relevant source of functional heterogeneity. At the advanced-successional stage, tree communities have harder woods, more membranous and semi-deciduous leaves and higher functional diversity. Conversely, at the early successional stages, forests have softer wood, more coriaceous leaves and lower functional diversity. We concluded that the studied forests showed a high functional composition heterogeneity, partially determined by a successional mosaic. While perennial species with lower values of specific leaf area and wood density predominated in the early successional areas, semi-deciduous species with higher values of specific leaf area and wood density prevailed in the late successional ones.","PeriodicalId":55338,"journal":{"name":"BOSQUE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70491399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-01DOI: 10.4067/s0717-92002021000200217
Nicole Galindo, Jan R. Bannister, Katharina Laage
Long-term monitoring is essential to understand responses to restoration actions in slow-growing species such as the native conifer Pilgerodendron uviferum. After catastrophic fires, most trees and seeds of this conifer were eliminated, limiting its natural recovery. The objective of this study was to analyze the implications of short-term and long-term monitoring on the interpretation of results in passive and active restoration experiments with Pilgerodendron uviferum in Chiloé Island. For 10 years, the processes of seed production and natural plant recruitment, and assisted regeneration through plantations of P. uviferum were evaluated in different microsite conditions in bogs, and light availability in sites with better drainage. The production of P. uviferum seeds was irregular and abundant every seven years (~200 seeds m-2). The natural regeneration after eight years increased by 80 %, especially in substrates with mosses and in association with Donatia fascicularis and Astelia pumilia. The abundance of natural regeneration was positively associated with older trees, the height and diameter of plants was favored by the protection of shrubs. In bogs, plants established on mounds reached higher levels of survival (78 %) and in sites with better drainage, survival was higher under canopy protection (100 %). Our results suggests that slow-growing species, such as P. uviferum, require long periods of monitoring to adequately interpret the results of restoration experiments in burned forests.
{"title":"Monitoreo a corto y largo plazo en ensayos de restauración de la conífera longeva y de lento crecimiento Pilgerodendron uviferum","authors":"Nicole Galindo, Jan R. Bannister, Katharina Laage","doi":"10.4067/s0717-92002021000200217","DOIUrl":"https://doi.org/10.4067/s0717-92002021000200217","url":null,"abstract":"Long-term monitoring is essential to understand responses to restoration actions in slow-growing species such as the native conifer Pilgerodendron uviferum. After catastrophic fires, most trees and seeds of this conifer were eliminated, limiting its natural recovery. The objective of this study was to analyze the implications of short-term and long-term monitoring on the interpretation of results in passive and active restoration experiments with Pilgerodendron uviferum in Chiloé Island. For 10 years, the processes of seed production and natural plant recruitment, and assisted regeneration through plantations of P. uviferum were evaluated in different microsite conditions in bogs, and light availability in sites with better drainage. The production of P. uviferum seeds was irregular and abundant every seven years (~200 seeds m-2). The natural regeneration after eight years increased by 80 %, especially in substrates with mosses and in association with Donatia fascicularis and Astelia pumilia. The abundance of natural regeneration was positively associated with older trees, the height and diameter of plants was favored by the protection of shrubs. In bogs, plants established on mounds reached higher levels of survival (78 %) and in sites with better drainage, survival was higher under canopy protection (100 %). Our results suggests that slow-growing species, such as P. uviferum, require long periods of monitoring to adequately interpret the results of restoration experiments in burned forests.","PeriodicalId":55338,"journal":{"name":"BOSQUE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70491157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-01DOI: 10.4067/s0717-92002020000300261
Gabriela Gomes Pires Paula, C. Souza, V. A. Maia, Natalia de Aguiar Campos, N. C. A. Fagundes, F. M. Gianasi, Diego Teixeira Girardelli, A. Pais, W. B. Silva, R. M. Santos
Discrete thresholds of structural or functional decline of a vegetation type are not readily apparent, as a vegetation type can slowly decline leading to transformations in its species composition and weakened or altered functions. However, forest monitoring can be used to assess changes in ecological functions in community structure and functional and phylogenetic composition of species. This study evaluated the existence of temporal variations in the functional and phylogenetic composition of a tree community, the occurrence of heterogeneity in the behavior of phylogenetic and functional variations, and how this possible heterogeneity influences the functional and phylogenetic variations under the aspect of environmental variations and by demographic ecological processes. Results detected quantitative and qualitative changes throughout the community, such as colonization, local extinctions, in demography and biomass, and increased evolutionary distinction, lower wood density species and phylogenetic clustering. These results have shown us that the natural changes of a community should not be underestimated, because the disappearance of a community can not only occur by the direct elimination of vegetation, but can be incremental with gradual changes in its functional characteristics and species composition, transforming itself into a new community with a new combination of species and new functions.
{"title":"Study of the floristic, functional and phylogenetic composition of trees in a short time in a forest fragment of the Atlantic Forest, Brazil","authors":"Gabriela Gomes Pires Paula, C. Souza, V. A. Maia, Natalia de Aguiar Campos, N. C. A. Fagundes, F. M. Gianasi, Diego Teixeira Girardelli, A. Pais, W. B. Silva, R. M. Santos","doi":"10.4067/s0717-92002020000300261","DOIUrl":"https://doi.org/10.4067/s0717-92002020000300261","url":null,"abstract":"Discrete thresholds of structural or functional decline of a vegetation type are not readily apparent, as a vegetation type can slowly decline leading to transformations in its species composition and weakened or altered functions. However, forest monitoring can be used to assess changes in ecological functions in community structure and functional and phylogenetic composition of species. This study evaluated the existence of temporal variations in the functional and phylogenetic composition of a tree community, the occurrence of heterogeneity in the behavior of phylogenetic and functional variations, and how this possible heterogeneity influences the functional and phylogenetic variations under the aspect of environmental variations and by demographic ecological processes. Results detected quantitative and qualitative changes throughout the community, such as colonization, local extinctions, in demography and biomass, and increased evolutionary distinction, lower wood density species and phylogenetic clustering. These results have shown us that the natural changes of a community should not be underestimated, because the disappearance of a community can not only occur by the direct elimination of vegetation, but can be incremental with gradual changes in its functional characteristics and species composition, transforming itself into a new community with a new combination of species and new functions.","PeriodicalId":55338,"journal":{"name":"BOSQUE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47892711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-01DOI: 10.4067/s0717-92002020000300353
D. Dantas, L. R. M. Pinto, M. Terra, N. Calegário, M. Oliveira
This study aimed at evaluating the performance of different models based on Artificial neural networks (ANN) to estimate the total height of eucalyptus trees ( Eucalyptus spp.), reducing the number of measurements in the field. Forty-eight ANN were tested, different from each other by the number of trees used as training sample, number of trees used to calculate the dominant height and use of variables (a) categorical, (b) categorical and continuous and (c) continuous, except for the diameter at 1.30 meters above the ground (DBH), used in all combinations. Estimates of height obtained by ANN were compared with values observed and estimates obtained by a hypsometric model. The ANN that showed the best results were used for the height estimation in forest inventory data for further application in the Schumacher and Hall volumetric model. The proposed models were efficient to estimate the total height of eucalyptus trees and allowed the expressive reduction of the number of trees to be measured in forest inventory. The best model found is composed of five trees as training sample, one as test sample and one as validation sample; dominant height coming from the height of the tallest tree in the plot; categorical variable Clone and continuous variables DBH, DBH dominant and basal area of the plot.
{"title":"Reduction of sampling intensity in forest inventories to estimate the total height of eucalyptus trees","authors":"D. Dantas, L. R. M. Pinto, M. Terra, N. Calegário, M. Oliveira","doi":"10.4067/s0717-92002020000300353","DOIUrl":"https://doi.org/10.4067/s0717-92002020000300353","url":null,"abstract":"This study aimed at evaluating the performance of different models based on Artificial neural networks (ANN) to estimate the total height of eucalyptus trees ( Eucalyptus spp.), reducing the number of measurements in the field. Forty-eight ANN were tested, different from each other by the number of trees used as training sample, number of trees used to calculate the dominant height and use of variables (a) categorical, (b) categorical and continuous and (c) continuous, except for the diameter at 1.30 meters above the ground (DBH), used in all combinations. Estimates of height obtained by ANN were compared with values observed and estimates obtained by a hypsometric model. The ANN that showed the best results were used for the height estimation in forest inventory data for further application in the Schumacher and Hall volumetric model. The proposed models were efficient to estimate the total height of eucalyptus trees and allowed the expressive reduction of the number of trees to be measured in forest inventory. The best model found is composed of five trees as training sample, one as test sample and one as validation sample; dominant height coming from the height of the tallest tree in the plot; categorical variable Clone and continuous variables DBH, DBH dominant and basal area of the plot.","PeriodicalId":55338,"journal":{"name":"BOSQUE","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42678945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-01DOI: 10.4067/s0717-92002020000300321
D. D. S. Vieira, M. Oliveira, J. Gama, E. Machado, Bruno Lafetá Oliveira, Axa Figueiredo
methods M 2 and M 3 The in contiguous of m², installed in Alluvial The assumption of the method M 1 was analyzed adjusting a Normal Probabilistic Density Function, evaluated by the K-S test. The methods evaluated using discriminant analyses, structural analyses and three-dimensional vertical profiles. the assumption was not met. The discriminant analyses showed that the classification was 100 % correct in methods M 1 and M 3 . The 13 most important species, in descending order, were the same in all three methods. However, from the 13 th , the differences were more remarkable in the method M 1 . Firstly, it is recommended to use the method M 3 , as it is more practical and provides results that are equal to those obtained using the method M 2 . However, if the objective is to obtain a higher level of detail, the option is the method M 2 since it allows obtaining up to five strata with 100 % correct classification. del día 13, las diferencias fueron más notables en el método M1. Primero, se recomienda el uso del método M3, ya que es más práctico y proporciona los mismos resultados que los obtenidos por el método M2. Sin embargo, si el objetivo es obtener un mayor nivel de detalle, la opción es el método M2, ya que permite obtener hasta cinco estratos con una clasificación 100 % correcta. Palabras clave: altura total, estratos verticales, estructura vertical, métodos de estratificación.
方法M 2和M 3在冲积层中安装M²的连续区域，调整正态概率密度函数对方法M 1的假设进行了分析，并通过K-S检验进行了评价。评价方法采用判别分析，结构分析和三维垂直剖面。这个假设没有得到满足。判别分析表明，m1和m3方法的分类正确率为100%。在三种方法中，最重要的13种按降序排列是相同的。但从第13个开始，m1方法的差异更为显著。首先，建议使用m3方法，因为它更实用，并且可以提供与m2方法相同的结果。然而，如果目标是获得更高层次的细节，则可以选择m2方法，因为它可以获得多达5个地层，并且分类100%正确。del día 13，不同的fueron más值得注意的是，msamudodo M1。首先，我们建议使用3个模数作为模数，然后用1个模数作为模数，再用1个模数作为模数，再用1个模数作为模数，再用1个模数作为模数。在禁运期间，我们的目标是获得市长nivel de detalle, la opción获得了el mmacetdo M2，并获得了许可获取者已经获得了cmacetos conuna clasificación 100%正确。Palabras clave: altura total, eststratos verticales, structura vertical, m todos de estratificación。
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