SHEVCHENKO SCIENTIFIC SOCIETY in LVIV
Ecological commission
21, Gen. Chuprynka Str., Lviv, 290013, Ukraine
e-mail:[email protected]STATE AND DYNAMIC TENDENCIES OF PINUS CEMBRA POPULATION IN
GORGANY
(REgion of UKRAINIAN CARPATHIAN
MOUNTAINS)
by Igor Patsura, Platon Tretyak
As a result of
forest harvesting during last centuries the Pinus cembra L. population was
essentially reduced. However, it has restored progressively during last thirty
years. Now it is distributed on the area of 3942,9 he. Pinus cembra is
distributed on slops high mountain ridges in conditions of different expositions
within the height above sea level 1000 - 1700 meters.
It most
frequently forms admixture in a structure of fur-tree forests (2179,2 he). 10 %
of it within general structure of fur-tree forest is distributed on the area
793,6 he, 20 % - on the area of 495,7 he. Its largest areas are in Natural
Reserve "Gorgany" (396 he) and in forest and landscape reserves of Osmoloda
State Forestry Enterprise (3188 he) and Solotvino State Forestry
Enterprise (340 he). Forests with considerate share of Pinus cembra are of great
value. Such forests are in Natural Reserve "Gorgany" on the area 80 he and
in Osmoloda State
Forestry Enterprise on the area of 29 he. This forests are distributed
mainly on poor stony grounds. However, there are moisture and humus in crakes of
stones. It provides good conditions for tree grow.
Senior ageforests with share of Pinus cembra are
of special importance. Locall forests with domination of Pinus cembra with
an impurity of a fur-tree form border with subAlpine bushes of Pinus mugo Turra.
Height of cembra pine trees reach 17 m, and fur-tree - 14 m. The diameter of
adult trees reach one meter. Age such trees are more than 200 years. They have
decays of a wood. Therefore such trees are broken with a wind.
Young plants of
Pinus cembra are not numerous. They are characterised by high viability. Seeds
penetrats into stones crackes where are conditions of high humidity and darkness
sprout. Only in some years the young plants occur on a surface. Its age is more
than five years. They form the different age underwood. Young cembra pine
frequently meet far from senior trees among a fur-tree forest. Locall area of
young cembra pine plants are extending. Its expansion promoted by
birds.
Phytocenosis of a cembra pine is stable in time by systems. It is possible to name them as variant Pinus cembra+ Picea abies— Vaccinium myrtillus. In their structure 5 species of trees, 5 – shrubs, 2 – low shrubs, 25 – herbs, 7 – glues are submitted.
The supervision shows that Pinus cembra at mountains Gorgany obviously was distributed more widely in the past. It formed the most highly located forest climatical level. It is necessary to take into consideration in forestry and nature reserve practice.
This WEB-site is made in 18 April 2002 The scientific adviser and WEB-designer: Doctor of biological sciences, professor Platon Tretyak [email protected]
