Sensitivity of the sorghum yield to individual changes in climate parameters: modelling based approach
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Bragantia |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300341 |
Resumo: | Based on sensitivity analyses the effect of changing in climate on sorghum has been investigated. This has been achieved by conducting crop modeling experiments carried out with weather observations and output of global climate models. As can be anticipated results demonstrated that the sorghum yield is more sensitive to rainfall, solar radiation and CO2 concentration. However, the increase in CO2 concentration has a positive effect on yield in years that the crop is submitted to water stress. This effect is extremely reduced under well watered conditions and therefore is subject to the climate inter-annual variability. Accumulated solar radiation along the sorghum cycle below 1900 MJ m–2 has also been shown to reduce the yield. Compared to other weather variables the sorghum yield is less sensitive to changes in relative humidity. In this sense, changes in stomatal closure and therefore photosyntesis is not highly dependent on water vapor pressure. These finds can be applied for both climate observations and global models output. |
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Sensitivity of the sorghum yield to individual changes in climate parameters: modelling based approachclimate changecrop modelssensitivity analysesCO2 concentrationproductivityBased on sensitivity analyses the effect of changing in climate on sorghum has been investigated. This has been achieved by conducting crop modeling experiments carried out with weather observations and output of global climate models. As can be anticipated results demonstrated that the sorghum yield is more sensitive to rainfall, solar radiation and CO2 concentration. However, the increase in CO2 concentration has a positive effect on yield in years that the crop is submitted to water stress. This effect is extremely reduced under well watered conditions and therefore is subject to the climate inter-annual variability. Accumulated solar radiation along the sorghum cycle below 1900 MJ m–2 has also been shown to reduce the yield. Compared to other weather variables the sorghum yield is less sensitive to changes in relative humidity. In this sense, changes in stomatal closure and therefore photosyntesis is not highly dependent on water vapor pressure. These finds can be applied for both climate observations and global models output.Instituto Agronômico de Campinas2015-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300341Bragantia v.74 n.3 2015reponame:Bragantiainstname:Instituto Agronômico de Campinas (IAC)instacron:IAC10.1590/1678-4499.0411info:eu-repo/semantics/openAccessGrossi,Marine CirinoJustino,FlávioRodrigues,Rafael de ÁvilaAndrade,Camilo Lelis Teixeiraeng2015-08-31T00:00:00Zoai:scielo:S0006-87052015000300341Revistahttps://www.scielo.br/j/brag/https://old.scielo.br/oai/scielo-oai.phpbragantia@iac.sp.gov.br||bragantia@iac.sp.gov.br1678-44990006-8705opendoar:2015-08-31T00:00Bragantia - Instituto Agronômico de Campinas (IAC)false |
dc.title.none.fl_str_mv |
Sensitivity of the sorghum yield to individual changes in climate parameters: modelling based approach |
title |
Sensitivity of the sorghum yield to individual changes in climate parameters: modelling based approach |
spellingShingle |
Sensitivity of the sorghum yield to individual changes in climate parameters: modelling based approach Grossi,Marine Cirino climate change crop models sensitivity analyses CO2 concentration productivity |
title_short |
Sensitivity of the sorghum yield to individual changes in climate parameters: modelling based approach |
title_full |
Sensitivity of the sorghum yield to individual changes in climate parameters: modelling based approach |
title_fullStr |
Sensitivity of the sorghum yield to individual changes in climate parameters: modelling based approach |
title_full_unstemmed |
Sensitivity of the sorghum yield to individual changes in climate parameters: modelling based approach |
title_sort |
Sensitivity of the sorghum yield to individual changes in climate parameters: modelling based approach |
author |
Grossi,Marine Cirino |
author_facet |
Grossi,Marine Cirino Justino,Flávio Rodrigues,Rafael de Ávila Andrade,Camilo Lelis Teixeira |
author_role |
author |
author2 |
Justino,Flávio Rodrigues,Rafael de Ávila Andrade,Camilo Lelis Teixeira |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Grossi,Marine Cirino Justino,Flávio Rodrigues,Rafael de Ávila Andrade,Camilo Lelis Teixeira |
dc.subject.por.fl_str_mv |
climate change crop models sensitivity analyses CO2 concentration productivity |
topic |
climate change crop models sensitivity analyses CO2 concentration productivity |
description |
Based on sensitivity analyses the effect of changing in climate on sorghum has been investigated. This has been achieved by conducting crop modeling experiments carried out with weather observations and output of global climate models. As can be anticipated results demonstrated that the sorghum yield is more sensitive to rainfall, solar radiation and CO2 concentration. However, the increase in CO2 concentration has a positive effect on yield in years that the crop is submitted to water stress. This effect is extremely reduced under well watered conditions and therefore is subject to the climate inter-annual variability. Accumulated solar radiation along the sorghum cycle below 1900 MJ m–2 has also been shown to reduce the yield. Compared to other weather variables the sorghum yield is less sensitive to changes in relative humidity. In this sense, changes in stomatal closure and therefore photosyntesis is not highly dependent on water vapor pressure. These finds can be applied for both climate observations and global models output. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300341 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300341 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1678-4499.0411 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Agronômico de Campinas |
publisher.none.fl_str_mv |
Instituto Agronômico de Campinas |
dc.source.none.fl_str_mv |
Bragantia v.74 n.3 2015 reponame:Bragantia instname:Instituto Agronômico de Campinas (IAC) instacron:IAC |
instname_str |
Instituto Agronômico de Campinas (IAC) |
instacron_str |
IAC |
institution |
IAC |
reponame_str |
Bragantia |
collection |
Bragantia |
repository.name.fl_str_mv |
Bragantia - Instituto Agronômico de Campinas (IAC) |
repository.mail.fl_str_mv |
bragantia@iac.sp.gov.br||bragantia@iac.sp.gov.br |
_version_ |
1754193304479596544 |