THE INFLUENCE OF SOME STAGNOLUVOSOLS CHARACTERISTICS ON THE PRODUCTIVITY OF QUERCUS CERRIS AND QUERCUS FRAINETTO STANDS FROM O.S. FĂGET, D.S. TIMIŞ PUBLISHEDI. CHISĂLIȚĂ1, L. C. DINCĂ1, Gh. SPÂRCHEZ2, A. CRĂCIUNESCU3, Dagmar VIȘOIU4
Abstract. It is a well-known fact that the West part of Romania presents good climatic-edaphic conditions for the ecological requests of Turkey oak (Quercus cerris) and Hungarian oak (Quercus frainetto). As such, the two species offer large productions and good quality of wood. The present paper intends to analyze only the forests that belong to the hill Turkey oak - Hungarian oak stands of superior productivity types, namely 7 forest management units from 3 production units from the forest district. The main purpose of this paper is to prepare stational datasheets for these forests with a focus on the characteristics of stagnoluvosols on which these species grow in correlation with their requests. After a presentation of the climatic conditions, the edaphic conditions were studied and soil profiles were situated in each forest management plan. Samples were then gathered and analyzed. Further analyses were realized for 4 forest management plans in order to establish the potential trophicity. Ecological factors and determiners were also analyzed and were then framed on size and species favorability categories. The ecological datasheet contains the size categories and favorability categories for all the ecological factors. Their synergetic effects have as result a superior quality type of station. Even though the luvosols are considered soils with a lower trophicity, some qualities of the studied soils (such as the large physiological thickness, the very large edaphic volume, the humus percentage and distribution on horizons, the high content of total nitrogen) lead to a potentially high trophicity.
Key words: luvosols, trophicity, edaphic volume