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Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
18/02/2016 |
Data da última atualização: |
02/03/2016 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
CAMPOS, M.; SILVA, K. S. G.; HIGUTI, V. A. H.; VILLAS-BOAS, P. R.; ARCHILA, J. F.; BECKER, M.; MILORI, D. M. B. P. |
Afiliação: |
PAULINO RIBEIRO VILLAS BOAS, CNPDIA; DEBORA MARCONDES BASTOS P MILORI, CNPDIA. |
Título: |
Protótipo de um sistema LIBS embarcado em um robô. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: WORKSHOP SOBRE LASER EM QUÍMICA ANALÍTICA, 2., 2015, São Carlos. Livro de resumos... São Carlos: UFSCar; Embrapa Instrumentação, 2015. p. 35. |
Idioma: |
Português |
Palavras-Chave: |
Análise elementar; Análise in situ; LIBS; Portabilidade; Sistema embarcado. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00754naa a2200241 a 4500 001 2037485 005 2016-03-02 008 2015 bl --- 0-- u #d 100 1 $aCAMPOS, M. 245 $aProtótipo de um sistema LIBS embarcado em um robô. 260 $c2015 653 $aAnálise elementar 653 $aAnálise in situ 653 $aLIBS 653 $aPortabilidade 653 $aSistema embarcado 700 1 $aSILVA, K. S. G. 700 1 $aHIGUTI, V. A. H. 700 1 $aVILLAS-BOAS, P. R. 700 1 $aARCHILA, J. F. 700 1 $aBECKER, M. 700 1 $aMILORI, D. M. B. P. 773 $tIn: WORKSHOP SOBRE LASER EM QUÍMICA ANALÍTICA, 2., 2015, São Carlos. Livro de resumos... São Carlos: UFSCar; Embrapa Instrumentação, 2015. p. 35.
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Embrapa Instrumentação (CNPDIA) |
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Registro Completo
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
24/10/2023 |
Data da última atualização: |
24/10/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
IBARR, M. A.; ZANATTA, J. A.; DIECKOW, J.; RIBEIRO, R. H.; SCHIRMANN, J.; RACHWAL, M. F. G.; STAHL, J.; SIMON, P. L. |
Afiliação: |
MARIANA ALVES IBARR, UNIVERSIDADE FEDERAL DO PARANÁ; JOSILEIA ACORDI ZANATTA, CNPF; JEFERSON DIECKOW, UNIVERSIDADE FEDERAL DO PARANÁ; RICARDO HENRIQUE RIBEIRO, UNIVERSIDADE FEDERAL DO PARANÁ; JANQUIELI SCHIRMANN, BOLSISTA DA EMBRAPA FLORESTAS; MARCOS FERNANDO GLUCK RACHWAL, CNPF; JAMES STAHL, KLABIN; PRISCILA LUZIA SIMON, AGRESEARCH INVERMAY. |
Título: |
Nitrous oxide and methane emissions from a Ferralsol as affected by loblolly pine cultivation time in subtropical Brazil. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Science of the Total Environment, v. 903, 166471, 2023. |
DOI: |
https://doi.org/10.1016/j.scitotenv.2023.166471 |
Idioma: |
Português |
Conteúdo: |
Abstract. We hypothesized that the age of loblolly pine stands influences soil methane (CH4) and nitrous oxide (N2O) emissions. This is a relevant topic to be studied in subtropical Brazil, where the pine plantation area is increasing considerably. We evaluated N2O and CH4 emissions for two years in a Ferralsol under loblolly pine (Pinus taeda L.) stands of 1, 9 and 18 year-olds and a native forest (NF). We calculated the net CO2eq emission by considering the N2O and CH4 emissions from soil and the carbon (C) accumulation as litter in the forest floor. The soil N2O emission reduced gradually over the loblolly pine cultivation years, whereas CH4 uptake rates showed no clear pattern. Soil N2O emission showed a positive relationship with soil temperature in NF, and with soil ammonium and nitrate intensities in the pine stands. Soil CH4 uptake was inversely related to water-filled pore space in the pine stands, but this relationship was not observed in NF. The soil CH4 uptake rate was 4.6 times higher (p < 0.10) in NF than the average uptake in loblolly pine stands. On the other hand, soil N2O emissions in 9 and 18- year-old stands were similar (p > 0.10) to those in NF (1.3 kg N ha 1 yr 1). Our results suggest that cultivation with loblolly pine for 18 years can reduce soil N2O emission, and the uptake of CH4 in this system offsets 17 % of N2O emissions. Furthermore, the C accumulation as litter in the forest floor of the mature pine stands (9- and 18- year-old) generated a net emission of 1.6 Mg CO2eq ha 1 yr 1, showing to be an expressive offsetting mech- anism. Therefore, we conclude that aged loblolly forests can reach N2O emissions levels comparable to those of NF, and the C sequestration in these forests floor can significantly contribute to offset N2O emissions and act as sink for net atmospheric CO2eq. MenosAbstract. We hypothesized that the age of loblolly pine stands influences soil methane (CH4) and nitrous oxide (N2O) emissions. This is a relevant topic to be studied in subtropical Brazil, where the pine plantation area is increasing considerably. We evaluated N2O and CH4 emissions for two years in a Ferralsol under loblolly pine (Pinus taeda L.) stands of 1, 9 and 18 year-olds and a native forest (NF). We calculated the net CO2eq emission by considering the N2O and CH4 emissions from soil and the carbon (C) accumulation as litter in the forest floor. The soil N2O emission reduced gradually over the loblolly pine cultivation years, whereas CH4 uptake rates showed no clear pattern. Soil N2O emission showed a positive relationship with soil temperature in NF, and with soil ammonium and nitrate intensities in the pine stands. Soil CH4 uptake was inversely related to water-filled pore space in the pine stands, but this relationship was not observed in NF. The soil CH4 uptake rate was 4.6 times higher (p < 0.10) in NF than the average uptake in loblolly pine stands. On the other hand, soil N2O emissions in 9 and 18- year-old stands were similar (p > 0.10) to those in NF (1.3 kg N ha 1 yr 1). Our results suggest that cultivation with loblolly pine for 18 years can reduce soil N2O emission, and the uptake of CH4 in this system offsets 17 % of N2O emissions. Furthermore, the C accumulation as litter in the forest floor of the mature pine stands (9- and 18- year-old) generated a net... Mostrar Tudo |
Palavras-Chave: |
Forest floor; Gases de efeito estufa; Pine; Sequestro de carbono; Stand age. |
Thesagro: |
Floresta; Pinus spp. |
Thesaurus NAL: |
Carbon sequestration; Forests; Greenhouse gases. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 02839naa a2200337 a 4500 001 2157448 005 2023-10-24 008 2023 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.scitotenv.2023.166471$2DOI 100 1 $aIBARR, M. A. 245 $aNitrous oxide and methane emissions from a Ferralsol as affected by loblolly pine cultivation time in subtropical Brazil.$h[electronic resource] 260 $c2023 520 $aAbstract. We hypothesized that the age of loblolly pine stands influences soil methane (CH4) and nitrous oxide (N2O) emissions. This is a relevant topic to be studied in subtropical Brazil, where the pine plantation area is increasing considerably. We evaluated N2O and CH4 emissions for two years in a Ferralsol under loblolly pine (Pinus taeda L.) stands of 1, 9 and 18 year-olds and a native forest (NF). We calculated the net CO2eq emission by considering the N2O and CH4 emissions from soil and the carbon (C) accumulation as litter in the forest floor. The soil N2O emission reduced gradually over the loblolly pine cultivation years, whereas CH4 uptake rates showed no clear pattern. Soil N2O emission showed a positive relationship with soil temperature in NF, and with soil ammonium and nitrate intensities in the pine stands. Soil CH4 uptake was inversely related to water-filled pore space in the pine stands, but this relationship was not observed in NF. The soil CH4 uptake rate was 4.6 times higher (p < 0.10) in NF than the average uptake in loblolly pine stands. On the other hand, soil N2O emissions in 9 and 18- year-old stands were similar (p > 0.10) to those in NF (1.3 kg N ha 1 yr 1). Our results suggest that cultivation with loblolly pine for 18 years can reduce soil N2O emission, and the uptake of CH4 in this system offsets 17 % of N2O emissions. Furthermore, the C accumulation as litter in the forest floor of the mature pine stands (9- and 18- year-old) generated a net emission of 1.6 Mg CO2eq ha 1 yr 1, showing to be an expressive offsetting mech- anism. Therefore, we conclude that aged loblolly forests can reach N2O emissions levels comparable to those of NF, and the C sequestration in these forests floor can significantly contribute to offset N2O emissions and act as sink for net atmospheric CO2eq. 650 $aCarbon sequestration 650 $aForests 650 $aGreenhouse gases 650 $aFloresta 650 $aPinus spp 653 $aForest floor 653 $aGases de efeito estufa 653 $aPine 653 $aSequestro de carbono 653 $aStand age 700 1 $aZANATTA, J. A. 700 1 $aDIECKOW, J. 700 1 $aRIBEIRO, R. H. 700 1 $aSCHIRMANN, J. 700 1 $aRACHWAL, M. F. G. 700 1 $aSTAHL, J. 700 1 $aSIMON, P. L. 773 $tScience of the Total Environment$gv. 903, 166471, 2023.
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