DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 7-10/1975 str. 88     <-- 88 -->        PDF

LITERATURA


1.
J o van o v ić, B.: Dendrologija sa osnovima fitocenologije — Beograd 1967. godine.
2.
Klepac , D.: Rast i prirast šumskih vrsta drveća i sastojina — Zagreb 1963.
godine.
3.
Mil o j ko v ić, D.: Glasnik Šumarskog fakulteta broj 15, Beograd 1958.
4.
Miščević, V., Stamenković, V.: Proizvodnost sastojina hrasta kitnjaka
na Oglednom dobru »Debeli Lug«, Šumarstvo 11—12, Beograd 1969. godine.
5.
Panić , Đ.: Neke biološke i morfološke odlike Quercus robur var. Tardissima
mat. Šumarstvo 9—10, Beograd 1971. godine.
6.
Samardžija , R.: Uticaj proreda na tok i veličinu debljinskog prirasta u
»Dobanovačkom zabranu«, Beograd 1970. godine.
7.
Šumsko privredna osnova »Rogot« (revizija) 1966. godine.
Summary


INCREMENT AND PRODUCTIVITY OF TREES AND STANDS
OF EARLY- AND LATE-FLUSHING PEDUNCULATE OAK (Quercus robur L.)
IN THE MANAGEMENT UNIT »ROGOT«


The authors investigated the increment and development of trees and stands
of the two forms of ePdunculate Oak viz. the late-flushing form (Qu. robur var.
tardiflora Čern.) and early-flushing form (Qu. robur var. praecox) in the management
unit »Rogot« within the Forest Enterprise Kragujevac. For these investigations
were laid out in 1972 (spring) three experimental plots, i. e.: one in early-flushing
Oak (plots II and III) after thinnings in this Ooak were carried out (in 1969, and
early in 1972, so that there were included the stands of the first- and second-named
thinnings). All Pedunculate Oak stands of the mentioned area were established by
sowing in plough furrovs. In 1974 the age of the stands was 48 years.


At the beginning of the growing period of 1972 were measured diameters b. h.,
heights (total and up to the crown beginning) and horizontal crown projections;
also two stems of each plot were felled and analysed. During the 1972 growing
period was also followed up on 7 stems of each plot the rhythm of diameter increment
by means of a tapelike dendrometer.


At the end of 1974 ere taken measurements of diameter b. h. and total tree
heights. On the basis of all these data this paper was prepared.


The basic data of experimental plots demonstrated a distinct difference in all
elements between the early-flushing and latelflushing forms. The late-flushing form
is superior in all respects (s. Tab. 1). Although the early-flushing form at the end
of 1974 exhibited the highest number of stems per ha, it lags behind in relation to
the late-flushing form (plots II and III) as follows: in the basal area by ca. 20°/»,
in the volume by ca. 60n/», and in the current annual volume increment by ca. 70 °/o.
The late-flushing form is particularly superior in respect of the achieved sizes of
the mean diameters and mean heights. At the end of 1974 the early-flushing form
achieved ds = 18.9 cm and hs = 17.6 m, while the late-flushing form achieved
ds = 22.4 and 22.5 cm, and hs = 23.3 m and 22.2 m.


Although the stand structural characteristics (distribution of stem numbers
over diameter and height sub-classes) are similar in both forms, nevertheless they
differ slightly from one another. First of all, it vas noticed that in the late-flushing
form there occurs a quicker differentiation of stems both in diameter and in
height. A difference was also noticed in the height curves. In the late-flushing form
there occurs in the beginning a sudden rise, and in the second part a slower rise,
while in the early-flushing form the rise is in the whole course relatively small and
even. This is also a proof for a stronger differentiation of stems by height in the
late-flushing form.