Analysis of changes in particular tree species volume in forests of Świętokrzyski National Park
Łukasz Grzeszczyk, Franciszek Woch
This paper contains estimation of changes in tree species volume in forests of Świętokrzyski National Park, in the period of last 25 years.
For good comparison of results and estimation of trends, the investigations in 2010 have
been made on the same areas as in 1985. The whole investigated area has been divided into 20 m x 20 m squares. Each square has been then divided into four 10 m x 10 m squares – for better work performance.
On the areas, detailed measurements of tree parameters – girth and height of trunk, for all standing trees (alive and dead ones) have been made and the volume of trunk has been calculated. The measurements and calculation have been made for year 2010 and 1985.
The results of investigations shows, that volume of particular species in forests of Świętokrzyski National Park have changed. Loss of fir is greater than loss of beech. The renewal of fir is decreasing, but the renewal of beech is increasing.