Estimativas das interações biosfera-atmosfera em ecossistema de pastagem natural do biompa Pampa
Ano de defesa: | 2019 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , , , |
Tipo de documento: | Tese |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Ciências Naturais e Exatas |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Meteorologia
|
Departamento: |
Meteorologia
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/20670 |
Resumo: | The Pampa biome and its ecosystems play a significant environmental role by providing services such as climate regulation and carbon sequestration. This research looks at and answers some relevant scientific questions and contributes to the understanding of how this important ecosystem fits into the context of climate system studies. The experimental site of Santa Maria, established by the PELD/CSUL network, brings together the fundamental characteristics for studies of the most diverse areas of knowledge, in what is the main landscape of Pampa, the native pasture. The micrometeorological technique used presented an energy balance closure (LE+H vs FG+RN) of 75%, with r 2 = 0.9. The Net Radiation (RN) has a seasonality that notably follows the incident RG. The use of this energy by the ecosystem differs throughout the year in two phases. One where latent heat flow is dominant over sensitive heat flow, occurs between August and April. Another phase, when RN is smaller (~ 75 W m-2), sensitive heat is dominant, occurs between May and July. Regarding biophysical processes involving carbon exchange between biosphere-atmosphere, the Gross Primary Production (GPP) presented annual variability between 2,285 gC m-2 year -1 and 2,902 gC m-2 year -1 in the photosynthetic process and Ecosystem Respiration (RECO) ranged from 2,124 gC m-2 year -1 to 2,477 gC m-2 year -1 . The average ratio between RECO and GPP for the entire period was 86% and indicates the capacity of the ecosystem to act as a sink in the annual net balance. Annual carbon estimates, or Net Ecosystem Productivity (NEP), in the January-December balance of analysis showed a positive sign. The annual variability showed values ranging between +109.4 gC m-2 year -1 (2014) and +507.2 gC m-2 year -1 (2015), with average annual value for the 5 complete years analyzed, of +349 gC m-2 year -1 . This result implies that the natural grassland ecosystem acts as an atmospheric carbon sink. |
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2021-04-22T17:02:10Z2021-04-22T17:02:10Z2019-09-19http://repositorio.ufsm.br/handle/1/20670The Pampa biome and its ecosystems play a significant environmental role by providing services such as climate regulation and carbon sequestration. This research looks at and answers some relevant scientific questions and contributes to the understanding of how this important ecosystem fits into the context of climate system studies. The experimental site of Santa Maria, established by the PELD/CSUL network, brings together the fundamental characteristics for studies of the most diverse areas of knowledge, in what is the main landscape of Pampa, the native pasture. The micrometeorological technique used presented an energy balance closure (LE+H vs FG+RN) of 75%, with r 2 = 0.9. The Net Radiation (RN) has a seasonality that notably follows the incident RG. The use of this energy by the ecosystem differs throughout the year in two phases. One where latent heat flow is dominant over sensitive heat flow, occurs between August and April. Another phase, when RN is smaller (~ 75 W m-2), sensitive heat is dominant, occurs between May and July. Regarding biophysical processes involving carbon exchange between biosphere-atmosphere, the Gross Primary Production (GPP) presented annual variability between 2,285 gC m-2 year -1 and 2,902 gC m-2 year -1 in the photosynthetic process and Ecosystem Respiration (RECO) ranged from 2,124 gC m-2 year -1 to 2,477 gC m-2 year -1 . The average ratio between RECO and GPP for the entire period was 86% and indicates the capacity of the ecosystem to act as a sink in the annual net balance. Annual carbon estimates, or Net Ecosystem Productivity (NEP), in the January-December balance of analysis showed a positive sign. The annual variability showed values ranging between +109.4 gC m-2 year -1 (2014) and +507.2 gC m-2 year -1 (2015), with average annual value for the 5 complete years analyzed, of +349 gC m-2 year -1 . This result implies that the natural grassland ecosystem acts as an atmospheric carbon sink.O bioma Pampa e seus ecossistemas prestam relevante papel ambiental, fornecendo serviços como a regulação climática e sequestro de carbono. Este trabalho observamos e respondemos algumas questões científicas relevantes e contribuir no entendimento de como este importante ecossistema se inseri no contexto dos estudos sobre sistema climático. O sítio experimental de Santa Maria, estabelecido junto a rede PELD/CSUL, reúne as características fundamentais para estudos das mais diversas áreas do conhecimento nesta que é fisionomia natural do Pampa, os campos nativos. A técnica micrometeorológica utilizada apresentou um fechamento do balanço energético (LE +H vs FG+RN) de 75%, com r 2 = 0,9. Observou-se que a radiação disponível (RN) apresenta uma sazonalidade que notavelmente acompanha a RG incidente. O uso desta energia pelo ecossistema se diferencia ao longo do ano em duas fases. Uma delas onde o fluxo de calor latente é dominante sobre o fluxo de calor sensível, perdurando por 10 meses. E outra fase, quando RN é menor (~ 75 W m-2), o calor sensível é dominante, ocorre entre os meses de maio e julho. Quanto aos processos biofísicos que envolvem troca de carbono entre biosfera-atmosfera, a Produção Primária Bruta (GPP) apresentou variabilidade anual entre 2.285 gC m-2 ano-1 e 2.902 gC m-2 ano-1 no processo fotossintético e a Respiração do Ecossistema (RECO) variou entre 2.124 gC m-2 ano-1 e 2.477 gC m-2 ano-1 . A razão média entre RECO e GPP para todo período foi de 86% e indica a capacidade do ecossistema em atuar como sumidouro no saldo líquido anual. As estimativas anuais de carbono, ou a Produtividade Líquida do Ecossistema (NEP), no balanço de janeiro a dezembro, para todos anos de análise, apresentou sinal positivo. A variabilidade anual mostrou valores variando entre +109,4 gC m-2 ano-1 (2014) e +507,2 gC m-2 ano-1 (2015), com valor médio anual, para os 5 anos completos analisados, de +349 gC m-2 ano-1 . Este resultado implica que o ecossistema de pastagem natural atua como um sequestrador de carbono atmosférico.porUniversidade Federal de Santa MariaCentro de Ciências Naturais e ExatasPrograma de Pós-Graduação em MeteorologiaUFSMBrasilMeteorologiaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessBioma PampaFluxo de CO2 e energiaInteração biosfera-atmosferaPampa biomeCO2 fluxEnergy fluxesInteractions biosphere-atmosphereCNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::METEOROLOGIAEstimativas das interações biosfera-atmosfera em ecossistema de pastagem natural do biompa PampaEvaluations of among interactions biosphere-atmosphere in Pampa biome ecosystemsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisMoraes, Osvaldo Luiz Leal dehttp://lattes.cnpq.br/0593135962205202Roberti, Débora ReginaTeichrieb, Cláudio AlbertoQuadros, Fernando Luiz Ferreira deAcevedo, Otávio CostaKuplich, Tatiana Morahttp://lattes.cnpq.br/0445900691203447Acosta, Ricardo100700300004600890f38b3-51f1-4071-8146-2205917ead151530e43e-94cc-418f-b4f6-7d8819c9ad20ef714b31-d11b-4f02-9edd-52a194544612316c7ef0-e547-41ac-8757-a031896517e7108064ed-80df-4ecf-9af7-76fa38ca3c7563f19660-29dc-422e-990c-8461e608c11a6146f712-4bf8-4f7d-805c-3ce15a71abf8reponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGMETEOROLOGIA_2019_ACOSTA_RICARDO.pdfTES_PPGMETEOROLOGIA_2019_ACOSTA_RICARDO.pdfTese de Doutoradoapplication/pdf15885220http://repositorio.ufsm.br/bitstream/1/20670/1/TES_PPGMETEOROLOGIA_2019_ACOSTA_RICARDO.pdf342e7701e81c08c4a9cc0bd1b046061fMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805http://repositorio.ufsm.br/bitstream/1/20670/2/license_rdf4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-816http://repositorio.ufsm.br/bitstream/1/20670/3/license.txt6eeec7985884eb94336b41cc5308bf0fMD53TEXTTES_PPGMETEOROLOGIA_2019_ACOSTA_RICARDO.pdf.txtTES_PPGMETEOROLOGIA_2019_ACOSTA_RICARDO.pdf.txtExtracted texttext/plain167198http://repositorio.ufsm.br/bitstream/1/20670/4/TES_PPGMETEOROLOGIA_2019_ACOSTA_RICARDO.pdf.txt329c809e0bf4accb76bd9e983a7fedefMD54THUMBNAILTES_PPGMETEOROLOGIA_2019_ACOSTA_RICARDO.pdf.jpgTES_PPGMETEOROLOGIA_2019_ACOSTA_RICARDO.pdf.jpgIM Thumbnailimage/jpeg4049http://repositorio.ufsm.br/bitstream/1/20670/5/TES_PPGMETEOROLOGIA_2019_ACOSTA_RICARDO.pdf.jpg274616ebba1e04c81d00660d65b3ec79MD551/206702022-06-02 10:32:28.306oai:repositorio.ufsm.br:1/20670Q3JlYXRpdmUgQ29tbXVucw==Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-06-02T13:32:28Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Estimativas das interações biosfera-atmosfera em ecossistema de pastagem natural do biompa Pampa |
dc.title.alternative.eng.fl_str_mv |
Evaluations of among interactions biosphere-atmosphere in Pampa biome ecosystems |
title |
Estimativas das interações biosfera-atmosfera em ecossistema de pastagem natural do biompa Pampa |
spellingShingle |
Estimativas das interações biosfera-atmosfera em ecossistema de pastagem natural do biompa Pampa Acosta, Ricardo Bioma Pampa Fluxo de CO2 e energia Interação biosfera-atmosfera Pampa biome CO2 flux Energy fluxes Interactions biosphere-atmosphere CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::METEOROLOGIA |
title_short |
Estimativas das interações biosfera-atmosfera em ecossistema de pastagem natural do biompa Pampa |
title_full |
Estimativas das interações biosfera-atmosfera em ecossistema de pastagem natural do biompa Pampa |
title_fullStr |
Estimativas das interações biosfera-atmosfera em ecossistema de pastagem natural do biompa Pampa |
title_full_unstemmed |
Estimativas das interações biosfera-atmosfera em ecossistema de pastagem natural do biompa Pampa |
title_sort |
Estimativas das interações biosfera-atmosfera em ecossistema de pastagem natural do biompa Pampa |
author |
Acosta, Ricardo |
author_facet |
Acosta, Ricardo |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Moraes, Osvaldo Luiz Leal de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/0593135962205202 |
dc.contributor.advisor-co1.fl_str_mv |
Roberti, Débora Regina |
dc.contributor.referee1.fl_str_mv |
Teichrieb, Cláudio Alberto |
dc.contributor.referee2.fl_str_mv |
Quadros, Fernando Luiz Ferreira de |
dc.contributor.referee3.fl_str_mv |
Acevedo, Otávio Costa |
dc.contributor.referee4.fl_str_mv |
Kuplich, Tatiana Mora |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0445900691203447 |
dc.contributor.author.fl_str_mv |
Acosta, Ricardo |
contributor_str_mv |
Moraes, Osvaldo Luiz Leal de Roberti, Débora Regina Teichrieb, Cláudio Alberto Quadros, Fernando Luiz Ferreira de Acevedo, Otávio Costa Kuplich, Tatiana Mora |
dc.subject.por.fl_str_mv |
Bioma Pampa Fluxo de CO2 e energia Interação biosfera-atmosfera |
topic |
Bioma Pampa Fluxo de CO2 e energia Interação biosfera-atmosfera Pampa biome CO2 flux Energy fluxes Interactions biosphere-atmosphere CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::METEOROLOGIA |
dc.subject.eng.fl_str_mv |
Pampa biome CO2 flux Energy fluxes Interactions biosphere-atmosphere |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::METEOROLOGIA |
description |
The Pampa biome and its ecosystems play a significant environmental role by providing services such as climate regulation and carbon sequestration. This research looks at and answers some relevant scientific questions and contributes to the understanding of how this important ecosystem fits into the context of climate system studies. The experimental site of Santa Maria, established by the PELD/CSUL network, brings together the fundamental characteristics for studies of the most diverse areas of knowledge, in what is the main landscape of Pampa, the native pasture. The micrometeorological technique used presented an energy balance closure (LE+H vs FG+RN) of 75%, with r 2 = 0.9. The Net Radiation (RN) has a seasonality that notably follows the incident RG. The use of this energy by the ecosystem differs throughout the year in two phases. One where latent heat flow is dominant over sensitive heat flow, occurs between August and April. Another phase, when RN is smaller (~ 75 W m-2), sensitive heat is dominant, occurs between May and July. Regarding biophysical processes involving carbon exchange between biosphere-atmosphere, the Gross Primary Production (GPP) presented annual variability between 2,285 gC m-2 year -1 and 2,902 gC m-2 year -1 in the photosynthetic process and Ecosystem Respiration (RECO) ranged from 2,124 gC m-2 year -1 to 2,477 gC m-2 year -1 . The average ratio between RECO and GPP for the entire period was 86% and indicates the capacity of the ecosystem to act as a sink in the annual net balance. Annual carbon estimates, or Net Ecosystem Productivity (NEP), in the January-December balance of analysis showed a positive sign. The annual variability showed values ranging between +109.4 gC m-2 year -1 (2014) and +507.2 gC m-2 year -1 (2015), with average annual value for the 5 complete years analyzed, of +349 gC m-2 year -1 . This result implies that the natural grassland ecosystem acts as an atmospheric carbon sink. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019-09-19 |
dc.date.accessioned.fl_str_mv |
2021-04-22T17:02:10Z |
dc.date.available.fl_str_mv |
2021-04-22T17:02:10Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/20670 |
url |
http://repositorio.ufsm.br/handle/1/20670 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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100700300004 |
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600 |
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890f38b3-51f1-4071-8146-2205917ead15 1530e43e-94cc-418f-b4f6-7d8819c9ad20 ef714b31-d11b-4f02-9edd-52a194544612 316c7ef0-e547-41ac-8757-a031896517e7 108064ed-80df-4ecf-9af7-76fa38ca3c75 63f19660-29dc-422e-990c-8461e608c11a 6146f712-4bf8-4f7d-805c-3ce15a71abf8 |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Naturais e Exatas |
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Programa de Pós-Graduação em Meteorologia |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Meteorologia |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Naturais e Exatas |
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