Estimativa de biomassa utilizando dados lidar em floresta tropical
Ano de defesa: | 2018 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Ciências Rurais |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Engenharia Florestal
|
Departamento: |
Recursos Florestais e Engenharia Florestal
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/14069 |
Resumo: | The Brazilian rainforests, mainly the Amazon, store in their biomass a large part of the global carbon stock, as a result of deforestation and degradation there has already been a considerable commitment, catalyzing the release of greenhouse gases into the atmosphere, aggravating the effects of global warming. In this context, the objective of this work was to estimate the above - ground biomass from data from airborne laser in Amazon rainforest. We used inventory data to calculate the biomass above the soil, values calculated through the model adjusted by Chave et al. (2015) adapted for tropical regions. Subsequently, the variables from the FUSION 3.6 software, derived from the airborne laser survey, were pre-selected using the Stepwise method. In the modeling, six models were tested: Linear, multiplication, exponential, parabola, polynomial of degree three and polynomial of degree four, where the variables Elev.CV, Elev.P99, Elev.MAD.mode and Elev.L3 from the laser composed the final model The best model was the polynomial of degree four, without intercept, which obtained coefficient of determination (R²) 0.76, standard error of estimate (Syx) 26.99, coefficient of variation (CV) 36,29, efficiency (E) 0.99, and absolute trend index (BIAS) -0.00005, and was therefore selected by the statistical criteria, later validated by the student's t-test. Thus, modeling with the inventory data related to LiDAR metrics proved to be efficient in the characterization of the tropical forest, showing that it is possible to use this technology to obtain estimates of above-ground biomass in tropical forests. |
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2018-08-17T20:50:19Z2018-08-17T20:50:19Z2018-02-27http://repositorio.ufsm.br/handle/1/14069The Brazilian rainforests, mainly the Amazon, store in their biomass a large part of the global carbon stock, as a result of deforestation and degradation there has already been a considerable commitment, catalyzing the release of greenhouse gases into the atmosphere, aggravating the effects of global warming. In this context, the objective of this work was to estimate the above - ground biomass from data from airborne laser in Amazon rainforest. We used inventory data to calculate the biomass above the soil, values calculated through the model adjusted by Chave et al. (2015) adapted for tropical regions. Subsequently, the variables from the FUSION 3.6 software, derived from the airborne laser survey, were pre-selected using the Stepwise method. In the modeling, six models were tested: Linear, multiplication, exponential, parabola, polynomial of degree three and polynomial of degree four, where the variables Elev.CV, Elev.P99, Elev.MAD.mode and Elev.L3 from the laser composed the final model The best model was the polynomial of degree four, without intercept, which obtained coefficient of determination (R²) 0.76, standard error of estimate (Syx) 26.99, coefficient of variation (CV) 36,29, efficiency (E) 0.99, and absolute trend index (BIAS) -0.00005, and was therefore selected by the statistical criteria, later validated by the student's t-test. Thus, modeling with the inventory data related to LiDAR metrics proved to be efficient in the characterization of the tropical forest, showing that it is possible to use this technology to obtain estimates of above-ground biomass in tropical forests.As florestas tropicais brasileiras, principalmente a Amazônia, armazenam na sua biomassa grande parte do estoque global de carbono, em virtude do desmatamento e degradação já houve um comprometimento considerável, catalisando a liberação de gases efeito estufa na atmosfera agravando os efeitos do aquecimento global. Neste contexto, o objetivo deste trabalho foi estimar a biomassa acima do solo a partir de dados provenientes de laser aerotransportado em floresta tropical amazônica. Utilizou-se dados de inventário para calcular a biomassa acima do solo, valores calculados por intermédio do modelo ajustado por Chave et al. (2015) adaptado para regiões tropicais. Posteriormente, as variáveis oriundas do software FUSION 3.6, provenientes do levantamento a laser aerotransportado, foram pré-selecionadas utilizando o método Stepwise. Na modelagem foram testados seis modelos: Linear, multiplicação, exponencial, parábola, polinômio de grau três e polinômio de grau quatro, onde as variáveis Elev.CV, Elev.P99, Elev.MAD.mode e Elev.L3 oriundas do laser compuseram o modelo final. O melhor modelo foi o polinomial de grau quatro, sem intercepto, que obteve coeficiente de determinação (R²) 0,76, erro padrão da estimativa (Syx) 26,99, coeficiente de variação (CV) 36,29, eficiência (E) 0,99, e índice de tendência absoluta (BIAS) -0,00005, e, portanto, foi selecionado pelos critérios estatísticos, posteriormente validado pelo teste t de student. Com isso, a modelagem com os dados do inventário relacionados a métricas LiDAR mostraram-se eficientes na caracterização da floresta tropical mostrando que é possível utilizar essa tecnologia para obter estimativas da biomassa acima do solo em florestas tropicais.porUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em Engenharia FlorestalUFSMBrasilRecursos Florestais e Engenharia FlorestalAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessAmazôniaLaser aerotransportadoModelagemRegressão linearAGBAirborne laserModelingLinear regressionAGBCNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTALEstimativa de biomassa utilizando dados lidar em floresta tropicalBiomass using lidar data in tropical forestinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisPereira, Rudiney Soareshttp://lattes.cnpq.br/9479801378014588Silva, Emanuel Araújohttp://lattes.cnpq.br/2765651276275384Pegoraro, Antoninho Joãohttp://lattes.cnpq.br/7214337305907407http://lattes.cnpq.br/1698124445731124Badin, Tiago Luis500200000003600a7274a7d-8dcd-466b-9a0d-c2b629e2ca887bbc05d5-156d-4a7d-bde8-e0cf07fc476ae6d1c135-94cf-4a16-b760-f232683b9690ed6fa356-fdde-4154-8bdc-62e1d483229creponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Estimativa de biomassa utilizando dados lidar em floresta tropical |
dc.title.alternative.eng.fl_str_mv |
Biomass using lidar data in tropical forest |
title |
Estimativa de biomassa utilizando dados lidar em floresta tropical |
spellingShingle |
Estimativa de biomassa utilizando dados lidar em floresta tropical Badin, Tiago Luis Amazônia Laser aerotransportado Modelagem Regressão linear AGB Airborne laser Modeling Linear regression AGB CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
title_short |
Estimativa de biomassa utilizando dados lidar em floresta tropical |
title_full |
Estimativa de biomassa utilizando dados lidar em floresta tropical |
title_fullStr |
Estimativa de biomassa utilizando dados lidar em floresta tropical |
title_full_unstemmed |
Estimativa de biomassa utilizando dados lidar em floresta tropical |
title_sort |
Estimativa de biomassa utilizando dados lidar em floresta tropical |
author |
Badin, Tiago Luis |
author_facet |
Badin, Tiago Luis |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Pereira, Rudiney Soares |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9479801378014588 |
dc.contributor.referee1.fl_str_mv |
Silva, Emanuel Araújo |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/2765651276275384 |
dc.contributor.referee2.fl_str_mv |
Pegoraro, Antoninho João |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/7214337305907407 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/1698124445731124 |
dc.contributor.author.fl_str_mv |
Badin, Tiago Luis |
contributor_str_mv |
Pereira, Rudiney Soares Silva, Emanuel Araújo Pegoraro, Antoninho João |
dc.subject.por.fl_str_mv |
Amazônia Laser aerotransportado Modelagem Regressão linear AGB |
topic |
Amazônia Laser aerotransportado Modelagem Regressão linear AGB Airborne laser Modeling Linear regression AGB CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
dc.subject.eng.fl_str_mv |
Airborne laser Modeling Linear regression AGB |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
description |
The Brazilian rainforests, mainly the Amazon, store in their biomass a large part of the global carbon stock, as a result of deforestation and degradation there has already been a considerable commitment, catalyzing the release of greenhouse gases into the atmosphere, aggravating the effects of global warming. In this context, the objective of this work was to estimate the above - ground biomass from data from airborne laser in Amazon rainforest. We used inventory data to calculate the biomass above the soil, values calculated through the model adjusted by Chave et al. (2015) adapted for tropical regions. Subsequently, the variables from the FUSION 3.6 software, derived from the airborne laser survey, were pre-selected using the Stepwise method. In the modeling, six models were tested: Linear, multiplication, exponential, parabola, polynomial of degree three and polynomial of degree four, where the variables Elev.CV, Elev.P99, Elev.MAD.mode and Elev.L3 from the laser composed the final model The best model was the polynomial of degree four, without intercept, which obtained coefficient of determination (R²) 0.76, standard error of estimate (Syx) 26.99, coefficient of variation (CV) 36,29, efficiency (E) 0.99, and absolute trend index (BIAS) -0.00005, and was therefore selected by the statistical criteria, later validated by the student's t-test. Thus, modeling with the inventory data related to LiDAR metrics proved to be efficient in the characterization of the tropical forest, showing that it is possible to use this technology to obtain estimates of above-ground biomass in tropical forests. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-08-17T20:50:19Z |
dc.date.available.fl_str_mv |
2018-08-17T20:50:19Z |
dc.date.issued.fl_str_mv |
2018-02-27 |
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 |
http://repositorio.ufsm.br/handle/1/14069 |
url |
http://repositorio.ufsm.br/handle/1/14069 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
500200000003 |
dc.relation.confidence.fl_str_mv |
600 |
dc.relation.authority.fl_str_mv |
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dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Florestal |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Recursos Florestais e Engenharia Florestal |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
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