Macronutrient and heavy metal accumulation in a Greek fir ecosystem of Taygetos mountain in Peloponnese

Macronutrient and heavy metals accumulation in the forest floor and soil were investigated in three undisturbed natural forest sites of Greek fir ecosystem of Taygetos mountain in Peloponnese. Dry weight and organic matter of the forest floor ranged greatly, from a high of about 67 and 57 t/ha under to a low of 27 and 14 t/ha respectively.

At the high elevation site, litter mass was enhanced due to lower litter decomposition rates indicated by the relatively higher C:N ratios and to favourable climatic conditions. Carbon:nitrogen ratio at the Ao horizon were close to critical C:N ratio where net mineralization begins while the C:P ratios were well above the critical values. Litter quality was important for the establishment of soil C stock. There was a lack of consistent differences in nutrient concentration between the Aoo and Ao horizons with the exception of N where generally increased with increasing decomposition stage. Differences among sites in soil N, Ca, K levels were mainly ascribed to decomposition rate, soil pH, and clay content respectively. High levels of Mn, Ni, and Cd in inorganic soil indicated pollution problems in the fir ecosystem of Taygetos mountain.



Copyright: © Aristotle University of Thessaloniki
Quelle: 2nd International Conference 2009 (Juni 2009)
Seiten: 7
Preis inkl. MwSt.: € 5,00
Autor: V. Kavvadias
Dr. Christos Paschalidis
Dimitris Velissariou
P. Mavroudis
A. Koriki

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