The effects of thinning on distribution of trees in scots pine-oriental spruce-caucasian fir mixed stands in Artvin region

This study was tried on "The effects to the distribution of thinning degree in Scots pine-Oriental spruce-Caucasian fir mixed stands in Artvin''. It was tries to express with scientific findings that the information about application of which intervention severity with thinning method in this mixed stands. The effects of thinning were expressed as differences occurring on tree development in continuation of thinning applications. In generally, the effects of thinning time and density on stand development with stem quality were tried to be identified in researches aimed to determine effects of thinning. Diameter increments and strength of individuals rise after thinning applications. However, biotic and abiotic damages are occurred after intensive thinning applications. Moreover, it is decreased total product amount together a negative impact on stem quality. In generally, the thinning applications can be rised the usable amount of wood, but they are not always affected total increase in unit area. The findings obtained in this study show that thinning cuttings are an important factor affecting the distribution of forest trees. The results showed that the effects of thinning cuttings in the distribution of trees in terms of the number were higher than the changes in the basal area. Although 25.07% - 26.10% of the trees in the moderate high thinning and 35.12-35.68% in the strong high thinning were removed, these rates ranged between 47.92-54.63% in the moderate high thinning and 51.30 - 60.10% in the strong high thinning. In order to ensure the continuity of the mixture in thinning cuttings, it should be paid attention to the proportional protection of the tree numbers of the species in the mixture.