Assessing CO2 sink/source strength of a degraded temperate peatland: atmospheric and hydrological drivers and responses to extreme events

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dc.authorid0000-0003-1099-4363en_US
dc.contributor.authorEvrendilek, Fatih
dc.date.accessioned2021-06-23T19:37:12Z
dc.date.available2021-06-23T19:37:12Z
dc.date.issued2015
dc.departmentBAİBÜ, Mühendislik Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractMonthly mean sink/source strength pattern of a degraded temperate peatland in northwestern Turkey was quantified using the eddy covariance technique between July 2010 and February 2014. Atmospheric and hydrological drivers and responses to extreme events of sink/source strength were analysed using multiple linear regression models, support vector machine, multilayer perceptron with principal component analysis and multiple comparisons following general linear models. On the basis of the three full-year measurements, mean annual, growing season and maximum estimates of net ecosystem CO2 exchange (NEE) were -0.22mg CO2 m(-2)s(-1), -0.28mg CO2 m(-2)s(-1) and -0.11mg CO2 m(-2)s(-1) in July, respectively. The main driver of changes in monthly mean NEE pattern was found to be latent heat flux. Independent validation results showed a similar predictive performance (r(2)=74%) of multiple linear regression and support vector machine models as a function of month, total rainfall, water table depth, relative humidity, latent heat, atmospheric water vapour, wind direction and downwelling shortwave radiation. A shift in NEE from a net sink to a net source was observed in response to the deepest and shallowest water table depths due to drought and flooding, respectively. Copyright (c) 2014 John Wiley & Sons, Ltd.en_US
dc.identifier.doi10.1002/eco.1592
dc.identifier.endpage1445en_US
dc.identifier.issn1936-0584
dc.identifier.issn1936-0592
dc.identifier.issue8en_US
dc.identifier.scopus2-s2.0-84955594423en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1429en_US
dc.identifier.urihttps://doi.org/10.1002/eco.1592
dc.identifier.urihttps://hdl.handle.net/20.500.12491/8123
dc.identifier.volume8en_US
dc.identifier.wosWOS:000368705800004en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorEvrendilek, Fatih
dc.language.isoenen_US
dc.publisherWileyen_US
dc.relation.ispartofEcohydrologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectData-Driven Modellingen_US
dc.subjectEnvironmental Perturbationsen_US
dc.subjectNet Ecosystem Exchangeen_US
dc.subjectSink Efficiencyen_US
dc.titleAssessing CO2 sink/source strength of a degraded temperate peatland: atmospheric and hydrological drivers and responses to extreme eventsen_US
dc.typeArticleen_US

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