DBPapers
DOI: 10.5593/SGEM2014/B32/S13.007

CONSIDERATIONS CONCERNING THE ORGANIC MATTER FROM OAS MOUNTAINS REPRESENTATIVE SOILS (EASTERN CARPHATIANS, ROMANIA)

A. Lupascu, D.Chelariu
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-14-8 / ISSN 1314-2704, June 19-25, 2014, Book 3, Vol. 2, 45-52 pp

ABSTRACT
The humus fractionation analysis was conducted for five soil subtypes, which are representative for the lower altitudinal range of the Oaş Mountains (Eastern Carphatians, Romania). There were analyzed, as follows: one andi-Eutric Cambisol (EC an) (400m alt.), one typical Eutric Cambisol (EC ti) (410m alt.), one andi-meso-skeletic Dystric Cambisol (DC an-qq) (474m alt.), one andi-skeletic-Eutric Cambisol (EC an-qq) (490m alt.) and one typical Eutric Cambisol (EC ti) (650m alt.). The analysed soils lay under a vegetation cover of grasslands in alternation with beech or fir-beech mixed forest, in an environment with moderate rainfall. The chemical reaction varies from strongly acid to moderate and weakly acid. Organic accumulation (highest in the andimeso- skeletic Dystric Cambisol), humification degree (highest in the typical Eutric Cambisol and andi-skeletic-Eutric Cambisol) rank these soils as moderate humic, and the extractable organic material, trough the ratio between fulvic and humic acids ranks the quality of humification.

Keywords: humic fractions, soil subtypes, Oaş Mountains

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