Naslov
Evaluation of Forest Ecosystem Stress in Croatia as a Function of Regional Atmospheric Lead Pollution

Autori
Bukovec, Dragan ; Miko, Slobodan ; Kušan, Valdo ; Antonić, Oleg ; Peh, Zoran ; Pernar, Renata ; Mesić, Saša

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
1. hrvatski botanički simpozij 2004 : knjiga sažetaka / Mitić, Božena ; Šoštarić, Renata - Zagreb, 2004

Skup
1. hrvatski botanički simpozij 2004

Mjesto i datum
Zagreb, Hrvatska, 30.09.2004. - 02.10.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Lead; Pb/Sc ratio; lithogenic lead; correlation model; karst; soil

Sažetak
It is well known that soil pollution are directly linked to the amount of precipitation. Atmospherically introduced high lead concentrations in soils of Croatian karst occur along the sharp geomorphological boundary along which the Mediterranean climate abruptly changes into a cold continental climate and at altitudes above 900 m. Detailed studies of Pb distribution in soil profiles showed concentrations of lead in remote regions up to 200 mgkg-1 in the upper 4 cm of the soil profiles. With the application of the Pb/Sc ratio obtained during the geochemical baseline mapping of the topsoil cover in the Croatian at 1088 sampling sites, the spatial risk of acid deposition in areas of high geomorphic variability was evaluated. The empirical model built on the neural networks related the amount of atmospherically introduced Pb (calculated from the Pb/Sc normalization variable which separates the anthropogenically introduced Pb from lithogenic lead), extent and type of forest cover, digital elevation model with its variations as well as the mean annual precipitation. The correlation model was very high (R>0.85). The presented model, which links soil geochemistry with precipitation and degree of forest damage, was found to be a suitable tool for evaluation of the spatial acidification risk.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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