Observation-based assessment of secondary water effects on seasonal vegetation decay across Africa

Detalhes bibliográficos
Autor(a) principal: Küçük, Çağlar
Data de Publicação: 2022
Outros Autores: Koirala, Sujan, Carvalhais, Nuno, Miralles, Diego G., Reichstein, Markus, Jung, Martin
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: http://hdl.handle.net/10362/150707
Resumo: Funding Information: ÇK acknowledges funding from the International Max Planck Research School for Global Biogeochemical Cycles. SK acknowledges the support of the Erdsystemforschung: Afrikanische Grundwasserressourcen im Zuge des globalen Wandels (Earth System Research: Groundwater Resources in Africa under Global Change) project of the Max Planck Society. Publisher Copyright: Copyright © 2022 Küçük, Koirala, Carvalhais, Miralles, Reichstein and Jung.
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spelling Observation-based assessment of secondary water effects on seasonal vegetation decay across AfricaAfricadrylandsecohydrologygroundwatersecondary water resourcestopographyvegetation decay ratewater limitationComputer Science (miscellaneous)Information SystemsArtificial IntelligenceFunding Information: ÇK acknowledges funding from the International Max Planck Research School for Global Biogeochemical Cycles. SK acknowledges the support of the Erdsystemforschung: Afrikanische Grundwasserressourcen im Zuge des globalen Wandels (Earth System Research: Groundwater Resources in Africa under Global Change) project of the Max Planck Society. Publisher Copyright: Copyright © 2022 Küçük, Koirala, Carvalhais, Miralles, Reichstein and Jung.Local studies and modeling experiments suggest that shallow groundwater and lateral redistribution of soil moisture, together with soil properties, can be highly important secondary water sources for vegetation in water-limited ecosystems. However, there is a lack of observation-based studies of these terrain-associated secondary water effects on vegetation over large spatial domains. Here, we quantify the role of terrain properties on the spatial variations of dry season vegetation decay rate across Africa obtained from geostationary satellite acquisitions to assess the large-scale relevance of secondary water effects. We use machine learning based attribution to identify where and under which conditions terrain properties related to topography, water table depth, and soil hydraulic properties influence the rate of vegetation decay. Over the study domain, the machine learning model attributes about one-third of the spatial variations of vegetation decay rates to terrain properties, which is roughly equally split between direct terrain effects and interaction effects with climate and vegetation variables. The importance of secondary water effects increases with increasing topographic variability, shallower groundwater levels, and the propensity to capillary rise given by soil properties. In regions with favorable terrain properties, more than 60% of the variations in the decay rate of vegetation are attributed to terrain properties, highlighting the importance of secondary water effects on vegetation in Africa. Our findings provide an empirical assessment of the importance of local-scale secondary water effects on vegetation over Africa and help to improve hydrological and vegetation models for the challenge of bridging processes across spatial scales.CENSE - Centro de Investigação em Ambiente e SustentabilidadeDCEA - Departamento de Ciências e Engenharia do AmbienteRUNKüçük, ÇağlarKoirala, SujanCarvalhais, NunoMiralles, Diego G.Reichstein, MarkusJung, Martin2023-03-16T22:36:12Z2022-09-092022-09-09T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article11application/pdfhttp://hdl.handle.net/10362/150707eng2624-909XPURE: 56032866https://doi.org/10.3389/fdata.2022.967477info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-05-22T18:10:10Zoai:run.unl.pt:10362/150707Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T17:40:43.415067Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Observation-based assessment of secondary water effects on seasonal vegetation decay across Africa
title Observation-based assessment of secondary water effects on seasonal vegetation decay across Africa
spellingShingle Observation-based assessment of secondary water effects on seasonal vegetation decay across Africa
Küçük, Çağlar
Africa
drylands
ecohydrology
groundwater
secondary water resources
topography
vegetation decay rate
water limitation
Computer Science (miscellaneous)
Information Systems
Artificial Intelligence
title_short Observation-based assessment of secondary water effects on seasonal vegetation decay across Africa
title_full Observation-based assessment of secondary water effects on seasonal vegetation decay across Africa
title_fullStr Observation-based assessment of secondary water effects on seasonal vegetation decay across Africa
title_full_unstemmed Observation-based assessment of secondary water effects on seasonal vegetation decay across Africa
title_sort Observation-based assessment of secondary water effects on seasonal vegetation decay across Africa
author Küçük, Çağlar
author_facet Küçük, Çağlar
Koirala, Sujan
Carvalhais, Nuno
Miralles, Diego G.
Reichstein, Markus
Jung, Martin
author_role author
author2 Koirala, Sujan
Carvalhais, Nuno
Miralles, Diego G.
Reichstein, Markus
Jung, Martin
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv CENSE - Centro de Investigação em Ambiente e Sustentabilidade
DCEA - Departamento de Ciências e Engenharia do Ambiente
RUN
dc.contributor.author.fl_str_mv Küçük, Çağlar
Koirala, Sujan
Carvalhais, Nuno
Miralles, Diego G.
Reichstein, Markus
Jung, Martin
dc.subject.por.fl_str_mv Africa
drylands
ecohydrology
groundwater
secondary water resources
topography
vegetation decay rate
water limitation
Computer Science (miscellaneous)
Information Systems
Artificial Intelligence
topic Africa
drylands
ecohydrology
groundwater
secondary water resources
topography
vegetation decay rate
water limitation
Computer Science (miscellaneous)
Information Systems
Artificial Intelligence
description Funding Information: ÇK acknowledges funding from the International Max Planck Research School for Global Biogeochemical Cycles. SK acknowledges the support of the Erdsystemforschung: Afrikanische Grundwasserressourcen im Zuge des globalen Wandels (Earth System Research: Groundwater Resources in Africa under Global Change) project of the Max Planck Society. Publisher Copyright: Copyright © 2022 Küçük, Koirala, Carvalhais, Miralles, Reichstein and Jung.
publishDate 2022
dc.date.none.fl_str_mv 2022-09-09
2022-09-09T00:00:00Z
2023-03-16T22:36:12Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10362/150707
url http://hdl.handle.net/10362/150707
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2624-909X
PURE: 56032866
https://doi.org/10.3389/fdata.2022.967477
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 11
application/pdf
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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