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ŠUMARSKI LIST 7-10/1975 str. 72     <-- 72 -->        PDF

13.
ORR-Ewing , A. L. (1957): A cytological study of the effects os self — pollination
on Pseudotsuga menziesii (Mirb.) Franco. Silvae genetica, 6 : 179—185.
14.
Pelcer, Z. Ces t a r, D. i dr. (1964): Veljun, Tržiška šikara i Zalije — Ekološko
gospodarski tipovi d meliorativni zahvati — Institut za šumarska istraživanja,
Zagreb.
15.
Ply m-For shell, C. (1953): Kottens och fröets utbildning efter själv — och
korsbefruktning hos tali (Pinus silvestris L.) [Development of cones and seeds
in the case of self — and cross — pollination in Pinus silvestris L:] Medd.
Skogsforskninst. Stockh., 43 (10): 1—42.
16.
Ruth, R. H. (1958): Silvical characteristics of Sitka spruce — Sil v. series No
8, Pacific North-West For. and Range Exp. Sta, Portland, Oregon, USA.
17.
V i d a k o v i ć, M. (1957): Oblici crnog bora u Jugoslaviji na temelju anatomije
iglica — Glasnik za šumske pokuse br. 13, Zagreb.
18.
Wood, R. F. (1955): Studies of North-West American Forests in relation to
Silviculture in Great Britain, For. Comm. Bull. No 25, London.
19.
Wright , J. W. (1962): Genetics of Forest Tree Improvement. FAO 1962. 142—
149.
Summary


A CONTRIBUTION TO THE SOLUTION OF CERTAIN SILVICULTURAL AND
SELECTION PROBLEMS ON THE BASIS OF SITE CONDITIONS IN
THE MANAGEMENT UNIT »BOSILJEVO«


This paper includes a joint approach of silvicultural, genetic and soil researches
to the management unit »Bosiljevo« in Croatia on the heath and bracken lands
of the Kordun region (between the Korana and Mrežnica Rivers) in order to try
on the basis of climatic data, soil investigations and estimate of stand conditions
to give adequate recommendations for tending and selection operations as a basis
for a long-term management of the mentioned forest.


This management unit is within the framework of the regular management of
the forest Enterprise Karlovac, and it covers a total area of 532,49 ha, of which


458.71 ha belong to the wooded area, 5.81 ha to sterile soil, and 67.97 ha to clearings.
Coniferous species are represented with 426.31 ha (93D/o), and broadleaved species
with 32.40 ha (7%>). Scots Pine (Pinus silvestris L.) is commercially the most
significant species covering an area of 306.96 ha or 72 % of conifers. The rest of
conifers is represented by Norway Spruce (Picea abies ILJ Karst.), European Larch
(Larix decidua Mill.), and Black Pine, which is assumed to represent the Illyrian
Black Pine (Pinus nigra Arn. ssp. gočensis Đorđ. var. illyrica n. var. — according to
Vidaković). The most numerous among the broadleaved species is Sessile Oak
(Quercus petraea /Mattuscka/ Liebl.), covering an area of 23.93 ha or 73 °/o of all the
broadleaved species. After which there follow: Hornbeam, Black Locust, Birch,
Poplar and other hard and soft broadleaved species.
In this low subalpine karst area was established through soil investigations
a large spread of deep acid brown soils on relict terra rossa (acric luvisols) of high
forest-productive value. The outcropping of limestone-dolomite parent rock is below
2%> or completely absent, while its underground relief descends deeply below the
relict terra rossa; sinkholes are less frequently roundsided. We are concerned with
a pedocartographic unit represented fairly well in the described region which is
suitable for the development of an intensive forest production.


Scots Pine at Bosiljevo occurs in populations of various different ages, of
artificial origin, but of unknown seed source. However, on the basis of the knowledge
of its variability both in Yugoslavia and elsewhere, as well as on the basis
of its phenotypic qualification, its approximate belonging to a low-subalpine or
montane variety was determined. Stem form, occurence of narrow-crowned and
slender-branched types, of relatively short needles and good resistance to snow
breakage are the essential characteristics of this population. Bacause of the expo