Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRR |
Texto Completo: | http://repositorio.ufrr.br:8080/jspui/handle/prefix/254 |
Resumo: | The study of the D-H (diameter-height) relationship in tropical forests improves our understanding of biomass stocks and the role they play in mitigating the effects of climate change in the regional and global context. In this sense, the objective of this study was to adjust D-H allometric models for different types of oligotrophic forests in the center-south of Roraima, northern Brazilian Amazonia. The study was based on measuring the diameter and height of 350 trees on a 2.25 km with 5m wide transect. The transect intersects a hydro-edaphic gradient where three forest types (campinarana, ecotone and ombrófila) are defined by environmental factors (soil class and duration of flooding). The five mathematical models tested were non-linear: Weibull, Michaelis-Menten, Log1, Log2 and Log3. The selection criteria of the models were the standard error of residues (RSE), the adjusted determination coefficient (R²adj) and the Akaike Information Criterion (AIC). The specific allometric models that define the total height of each of the three forest types investigated are asymptotically different (p = <5%). Analysis of the residues of the more parsimonious non-linear models showed a tendency to overestimate the total heights for the three forest types. The best fit model (Michaelis-Menten) indicated that general models previously published for tropical regions using diameter as an independent variable may overestimate heights based on stem diameter. The general Weibull models overestimated the heights in the study area in (17.7-105.8%) in the three forest types (Treed shade-loving, ecotone and ombrófila), except in the diameters > 60 (cm) in the forest type of the ombrophilous where the South American model underestimated the heights (13.2-67.6%), overestimating the highest heights in the campinarana, however, in the ecotone area, it overestimated the heights in the diameters <= 20 (cm) and underestimated them in diameters> 38 (cm), the heights were also overestimated in diameters <= 20 (cm), and underestimated in diameters > 25 (cm). It is concluded that the diameter-height relationship differs between the phytophysiognomy of the campinarana with (3-4 months of flood) in relation to the ecotone area (1-2 months of flooding) and the ombrophilous forest (without flooding) , indicating that more restricted environments (campinaranas established in areas with longer flooding periods and poorer soils) have lower biometric standards than forest types with lower restrictions (ombrophilous and ecotone forest located in free zones or with a shorter time period of flooding). |
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Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileiraDiameter-height allometric models for oligotrophic forests in the Northes Brazilian AmazonAlometriaFlorestas amazônicasEcótonoVariáveis hidro-edáficasAllometryAmazonian forestsEcotoneHydro-edaphic variablesCNPQ::CIENCIAS BIOLOGICAS::BIOLOGIA GERALThe study of the D-H (diameter-height) relationship in tropical forests improves our understanding of biomass stocks and the role they play in mitigating the effects of climate change in the regional and global context. In this sense, the objective of this study was to adjust D-H allometric models for different types of oligotrophic forests in the center-south of Roraima, northern Brazilian Amazonia. The study was based on measuring the diameter and height of 350 trees on a 2.25 km with 5m wide transect. The transect intersects a hydro-edaphic gradient where three forest types (campinarana, ecotone and ombrófila) are defined by environmental factors (soil class and duration of flooding). The five mathematical models tested were non-linear: Weibull, Michaelis-Menten, Log1, Log2 and Log3. The selection criteria of the models were the standard error of residues (RSE), the adjusted determination coefficient (R²adj) and the Akaike Information Criterion (AIC). The specific allometric models that define the total height of each of the three forest types investigated are asymptotically different (p = <5%). Analysis of the residues of the more parsimonious non-linear models showed a tendency to overestimate the total heights for the three forest types. The best fit model (Michaelis-Menten) indicated that general models previously published for tropical regions using diameter as an independent variable may overestimate heights based on stem diameter. The general Weibull models overestimated the heights in the study area in (17.7-105.8%) in the three forest types (Treed shade-loving, ecotone and ombrófila), except in the diameters > 60 (cm) in the forest type of the ombrophilous where the South American model underestimated the heights (13.2-67.6%), overestimating the highest heights in the campinarana, however, in the ecotone area, it overestimated the heights in the diameters <= 20 (cm) and underestimated them in diameters> 38 (cm), the heights were also overestimated in diameters <= 20 (cm), and underestimated in diameters > 25 (cm). It is concluded that the diameter-height relationship differs between the phytophysiognomy of the campinarana with (3-4 months of flood) in relation to the ecotone area (1-2 months of flooding) and the ombrophilous forest (without flooding) , indicating that more restricted environments (campinaranas established in areas with longer flooding periods and poorer soils) have lower biometric standards than forest types with lower restrictions (ombrophilous and ecotone forest located in free zones or with a shorter time period of flooding).O estudo da relação do D~H (diâmetro-altura) em florestas tropicais melhora nosso entendimento sobre os estoques de biomassa e o papel que desempenham em relação à mitigação dos efeitos das mudanças climáticas no contexto regional e global. Nesse sentido, o objetivo deste estudo foi ajustar modelos alométricos D~H para diferentes tipos de florestas oligotróficas do centro-sul de Roraima, norte da Amazônia brasileira. O estudo tomou como base a medição do diâmetro e da altura de 350 árvores em um transecto permanente de 2.25 km com 5m de largura. O transecto corta um gradiente hidro-edáfico onde ocorrem três tipos florestais (campinarana, ecótono e ombrófila) definidos por condicionantes ambientais (classe de solo e duração da inundação). Os cinco modelos matemáticos testados foram não-lineares: Weibull, Michaelis-Menten, Log1, Log2 e Log3. Os critérios de seleção dos modelos foram o erro padrão dos resíduos (RSE), o coeficiente de determinação ajustado (R²adj) e o Critério de Informação Akaike (AIC). Os modelos alométricos específicos que definem a altura total de cada um dos três tipos florestais investigados são assintoticamente distintos entre si (p = <5%). Análise dos resíduos dos modelos não-lineares mais parcimoniosos mostraram uma tendência de superestimar as alturas totais para os três tipos florestais. O modelo melhor ajustado (Michaelis-Menten) indicou que os modelos gerais publicados previamente para as regiões tropicais usando o diâmetro como variável independente podem superestimar as alturas com base no diâmetro do caule. Os modelos gerais de Weibull superestimaram as alturas na área de estudo em (17.7-105.8%) nos três tipos florestais (campinaranas, ecótono e ombrófila), com exceção nos diâmetros >60cm no tipo florestal da ombrófila onde o modelo Sul Americano subestimou as alturas, porém, o modelo baseado no clima apresentou valores de (13.2-67.6%) superestimando as alturas com maior dimensão na campinarana, entretanto, na área de ecótono superestimou as alturas nos diâmetros <= 20 (cm) e as subestimou nos diâmetros > 38 (cm), na fitofisionomia da ombrófila as alturas foram superestimadas também nos diâmetros <= 20 (cm), e subestimadas nos diâmetros > 25 (cm). Conclui-se que a relação de diâmetro-altura difere entre a fitofisionomia da campinarana com (3-4 meses de inundação) em relação com a área de ecótono (1-2 meses de alagamento) e a floresta ombrófila (sem presença de inundação), indicando que ambientes mais restritos (campinaranas estabelecidas em zonas com maior período de inundação e solos mais pobres) possuem padrões biométricos menores em relação aos tipos florestais com menores restrições (floretas ombrófilas e ecótonos situados em zonas isentas ou com menor período de alagamento temporal).Universidade Federal de RoraimaBrasilPRPPG - Pró-Reitoria de Pesquisa e Pós-GraduaçãoPRONAT - Programa de Pós-Graduação em Recursos NaturaisUFRRBarbosa, Reinaldo Imbroziohttp://lattes.cnpq.br/2040628785093158Oliveira, Rodrigo Leonardo Costa dehttp://lattes.cnpq.br/0907853997154492Alemán, Luis Antonio Beltrán2019-12-30T12:33:05Z2019-12-30T12:33:05Z2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisALEMÁN, Luis Antonio Beltrán. Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira. 2019. 63f. Dissertação (Mestrado em Ciências Ambientais) - Programa de Pós-Graduação em Recursos Naturais, Universidade Federal de Roraima, Boa Vista, 2019.http://repositorio.ufrr.br:8080/jspui/handle/prefix/254porAttribution-NonCommercial-ShareAlike 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-sa/3.0/br/info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRRinstname:Universidade Federal de Roraima (UFRR)instacron:UFRR2023-11-10T18:04:50Zoai:repositorio.ufrr.br:prefix/254Repositório InstitucionalPUBhttp://repositorio.ufrr.br:8080/oai/requestangelsenhora@gmail.comopendoar:2023-11-10T18:04:50Repositório Institucional da UFRR - Universidade Federal de Roraima (UFRR)false |
dc.title.none.fl_str_mv |
Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira Diameter-height allometric models for oligotrophic forests in the Northes Brazilian Amazon |
title |
Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira |
spellingShingle |
Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira Alemán, Luis Antonio Beltrán Alometria Florestas amazônicas Ecótono Variáveis hidro-edáficas Allometry Amazonian forests Ecotone Hydro-edaphic variables CNPQ::CIENCIAS BIOLOGICAS::BIOLOGIA GERAL |
title_short |
Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira |
title_full |
Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira |
title_fullStr |
Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira |
title_full_unstemmed |
Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira |
title_sort |
Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira |
author |
Alemán, Luis Antonio Beltrán |
author_facet |
Alemán, Luis Antonio Beltrán |
author_role |
author |
dc.contributor.none.fl_str_mv |
Barbosa, Reinaldo Imbrozio http://lattes.cnpq.br/2040628785093158 Oliveira, Rodrigo Leonardo Costa de http://lattes.cnpq.br/0907853997154492 |
dc.contributor.author.fl_str_mv |
Alemán, Luis Antonio Beltrán |
dc.subject.por.fl_str_mv |
Alometria Florestas amazônicas Ecótono Variáveis hidro-edáficas Allometry Amazonian forests Ecotone Hydro-edaphic variables CNPQ::CIENCIAS BIOLOGICAS::BIOLOGIA GERAL |
topic |
Alometria Florestas amazônicas Ecótono Variáveis hidro-edáficas Allometry Amazonian forests Ecotone Hydro-edaphic variables CNPQ::CIENCIAS BIOLOGICAS::BIOLOGIA GERAL |
description |
The study of the D-H (diameter-height) relationship in tropical forests improves our understanding of biomass stocks and the role they play in mitigating the effects of climate change in the regional and global context. In this sense, the objective of this study was to adjust D-H allometric models for different types of oligotrophic forests in the center-south of Roraima, northern Brazilian Amazonia. The study was based on measuring the diameter and height of 350 trees on a 2.25 km with 5m wide transect. The transect intersects a hydro-edaphic gradient where three forest types (campinarana, ecotone and ombrófila) are defined by environmental factors (soil class and duration of flooding). The five mathematical models tested were non-linear: Weibull, Michaelis-Menten, Log1, Log2 and Log3. The selection criteria of the models were the standard error of residues (RSE), the adjusted determination coefficient (R²adj) and the Akaike Information Criterion (AIC). The specific allometric models that define the total height of each of the three forest types investigated are asymptotically different (p = <5%). Analysis of the residues of the more parsimonious non-linear models showed a tendency to overestimate the total heights for the three forest types. The best fit model (Michaelis-Menten) indicated that general models previously published for tropical regions using diameter as an independent variable may overestimate heights based on stem diameter. The general Weibull models overestimated the heights in the study area in (17.7-105.8%) in the three forest types (Treed shade-loving, ecotone and ombrófila), except in the diameters > 60 (cm) in the forest type of the ombrophilous where the South American model underestimated the heights (13.2-67.6%), overestimating the highest heights in the campinarana, however, in the ecotone area, it overestimated the heights in the diameters <= 20 (cm) and underestimated them in diameters> 38 (cm), the heights were also overestimated in diameters <= 20 (cm), and underestimated in diameters > 25 (cm). It is concluded that the diameter-height relationship differs between the phytophysiognomy of the campinarana with (3-4 months of flood) in relation to the ecotone area (1-2 months of flooding) and the ombrophilous forest (without flooding) , indicating that more restricted environments (campinaranas established in areas with longer flooding periods and poorer soils) have lower biometric standards than forest types with lower restrictions (ombrophilous and ecotone forest located in free zones or with a shorter time period of flooding). |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12-30T12:33:05Z 2019-12-30T12:33:05Z 2019 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
ALEMÁN, Luis Antonio Beltrán. Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira. 2019. 63f. Dissertação (Mestrado em Ciências Ambientais) - Programa de Pós-Graduação em Recursos Naturais, Universidade Federal de Roraima, Boa Vista, 2019. http://repositorio.ufrr.br:8080/jspui/handle/prefix/254 |
identifier_str_mv |
ALEMÁN, Luis Antonio Beltrán. Modelos alométricos diâmetro-altura para florestas oligotróficas do Norte da Amazônia brasileira. 2019. 63f. Dissertação (Mestrado em Ciências Ambientais) - Programa de Pós-Graduação em Recursos Naturais, Universidade Federal de Roraima, Boa Vista, 2019. |
url |
http://repositorio.ufrr.br:8080/jspui/handle/prefix/254 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-ShareAlike 3.0 Brazil http://creativecommons.org/licenses/by-nc-sa/3.0/br/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-ShareAlike 3.0 Brazil http://creativecommons.org/licenses/by-nc-sa/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Roraima Brasil PRPPG - Pró-Reitoria de Pesquisa e Pós-Graduação PRONAT - Programa de Pós-Graduação em Recursos Naturais UFRR |
publisher.none.fl_str_mv |
Universidade Federal de Roraima Brasil PRPPG - Pró-Reitoria de Pesquisa e Pós-Graduação PRONAT - Programa de Pós-Graduação em Recursos Naturais UFRR |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRR instname:Universidade Federal de Roraima (UFRR) instacron:UFRR |
instname_str |
Universidade Federal de Roraima (UFRR) |
instacron_str |
UFRR |
institution |
UFRR |
reponame_str |
Repositório Institucional da UFRR |
collection |
Repositório Institucional da UFRR |
repository.name.fl_str_mv |
Repositório Institucional da UFRR - Universidade Federal de Roraima (UFRR) |
repository.mail.fl_str_mv |
angelsenhora@gmail.com |
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1802112036547592192 |