391 Bulletin UASVM, Horticulture 65(1)/2008 pISSN 1843-5254; eISSN 1843-5394 CONSIDERATION THROUGH REGENERATION OF FOREST FROM NORTH-WEST OF TRANSILVANIAN PLAIN Liviu HOLONEC, Horea VLASIN, I. COVRIG, George MAZARE, Vasile CEUCA University of Agricultural Science and Veterinary Medicine, Faculty of Horticulture, 3-5 Mănătur Street, 400372 Cluj. Napoca, Tel. +40.264.596.384, lholonec@usamvcluj.ro Keywords: natural regeneration, afforestation, saplings, resinous, manyplies Abstract: In forests from north-west of Transilvanian plain the tendencies to obtain regeneration of rammels naturally through specifically treatments applies of this purpose. Owing to rammels un-evenly and of stationary conditions, executions of regeneration cuts under economical pressure except the fructify of basic species, this thing could be practically impossible happen upon all three regeneration types (natural, artificial or mixed). The idea is to use in regeneration process, rammel with natural origin by seed, regardless of high, conditioned by apart to the valuable species and do not present injuries. Perfectly could be to harvest wooden mass according to fruition of principal’s species trough extraction of trees wealthy mature, when is the maximal growth and to realize natural regeneration of resulted surfaces without the necessity of afforestation intervention. This thing could be possible especially according to regeneration spruce firs and beech’s situated in stationary favorable conditions. In studied period (1997-2001), in these rammels succeed natural regeneration percentages around 70 %, and even more, but not in all situations cause also in stationary conditions when the cuts where executed after the fruition of principal species. This paper work propose to analyze the meted situations on Forest Department from Cluj-Napoca according to rammel regeneration establish the necessary measures through vitalize this activity. INTRODUCTION In special literature, through regeneration is presented the installation process of new forest in the position of the exploited one or in progress of exploitation, or to create new forest on lands suitable to this purpose. The regeneration of forests consists in renewing naturally, by dropped seeds from the old generation trees or by sprouts and copse. The artificial regeneration of rammels means the renewing of it or to create one through afforestation using direct sowings, plantation and seedlings. If on the same surface are regeneration process naturally and artificially, regeneration is mixed or combined. The natural regeneration is considered succeeded if is realized minimum one sapling on square meter or 10 000 saplings of desired species in new rammel, viable unharmed and uniform spreads. (Florescu, 1981). MATERIALS AND METHODS The used materials, where data of rammels regeneration, from Forestry Department of Cluj-Napoca and neighbourhood departments. Where centralize data referring to natural regeneration and especially to artificially and mixed regeneration methods. The big accent was on regenerated surfaces with principal used species in regeneration composition and on the number of sapling origin. On the field where noticed observations through the quality of the regeneration works and of their results (under the succeed percentage and the maintenance of sapling). The data was centralize in tables and graphic represented.