PRINCIPLES OF SCALAR ECOLOGY REGARDING THE DEGRADATION OF THE MEADOW FOREST ECOSYSTEMS

The researches made by several ecologists demonstrated that the evolutionary processes in the ecosystems have developed in a continuous alternation between stability and change. The present study proposes an analysis of the degrading factors accumulated with time in the degraded forest ecosystem of the Mures meadow - Arad town, Romania. There are seven factors that contribute to the degradation of some forest ecosystems (the area is mainly composed of the oak tree created artificially). The factors have contributed (interacting each other) to this process, probably with the exception of the edaphic factor, which even if it acts by itself, it remains only a natural limiting factor. The sub-productive ecological unbalanced tree was the object of this research. Following a previous stratification related to the main decomposing factors and with the structural features of the tree, an emplacement test was set according to the systematic quartation, which was enriched later wherever necessary with new surfaces for some study details. In the paper are presented the results of some scalar ecology researches regarding the degradation of the meadow forest ecosystems. According to a scalar analysis, there have been identified 7 factors: biotic, non-biotic and atrophic. These factors, accumulated in time, breaks out periodically the phenomenon of degradation.