6533b858fe1ef96bd12b59d6
RESEARCH PRODUCT
δ13C variations in tree rings as an indication of severe changes in the urban air quality
Gaetano DongarraDaniela Varricasubject
Atmospheric ScienceAir pollutionMineralogyUrban environmentAtmospheric sciencesmedicine.disease_causeAtmospherechemistry.chemical_compoundmedicineDendrochronologyEnvironmental geochemistryAir quality indexGeneral Environmental Scienceδ13Cbiologybiology.organism_classificationStable carbon isotopeSettore GEO/08 - Geochimica E VulcanologiaPlatanuschemistryCarbon dioxideIsotopes of carbonCarbon dioxideEnvironmental scienceDendrochemistryTree ringdescription
Abstract Annual growth rings sampled from three free-standing trees (Platanus hybrida sp.), grew in the metropolitan area of Palermo (Italy) and covering a 118 years time span (1880–1998), have been studied for their 13C/12C carbon isotope ratios. It has been found that the 13C/12C tree ring record, during the study time interval, decreased of −3.6‰, from −26.4‰ in 1880 to −30‰ in 1998. Such a progressive depletion has been attributed to the addition of anthropogenic 13C depleted carbon dioxide to the local atmosphere. The observed 13C/12C decrease has been used to infer some possible pathways of atmospheric CO2 change in the study urban area.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-12-01 |