DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 3-4/1970 str. 45     <-- 45 -->        PDF

LITERATURA


1.
A s s m a n n, E.: Waldcrtragskunde, München—Bonn—Wien 1961.
2.
E 1 lenb er g, H.: Bd. IV Grundlagen der Vegetationsgliedrung 1. Teil Aufgaben
und Methoden der Vegetationskunde, Stuttgart 1956.
3.
E 11 c n b e r g, H.: Vegetation Mitteleuropas mit den Alpen, Stuttgart 1963.
4.
Ellenberg , H.: Grundlagenforschung zur Landschaftsökologie im Internanationalen
Biologischen Programm, Pflanzensociologie und Landschaftsökologie,
Bericht über das internationale Symposium in Stolzenau Weser 1963, Haag
1968.
5.
Fi lipa n, T. i P r p i ć, B.: Prilog poznavanju penetracije fosfora (P:!-) u nekim
tlima Hrvatske u kojima se osnivaju plantaže i intenzivne kulture šumskog
drveća, Šum. list 9—10/1969, str. 309—319.
6.
K ö s 11 e r, J. N., Brückner, E., B i b e 1 r i e t h e r, H.: Die Wurzeln der
Waldbäume, Hamburg—Berlin 1968.
7.
K r a m e r, P. J. i Kozlowski, T. T.: Physiology of Trees, New York—Toronto—
London 1960.
8.
P o d z o r o v, N. V.: O srastanii kornej v gnezdovyh kulturah sosny v uslovijah
lesnoj zony, Lesn. Hoz., 6, 1962, str. 54—56.
9.
Prpić , B.: Prilog srašćivaniu korijenja i akumulacije radioaktivnog izotooa
fosfora (P3-) u lišću, deblu i korijenu poljskog jasena (Fraxinus ansmstifolia
Vahl) u stadiiu mladika, šum. list 11—12 1967, str. 482—491.
10.
P r p i ć, B. i F i 1 i p a n, T.: Učinak dodavanja radioaktivnog fosfora (P32) kod
nekih četinjača i kod robusne topole (u štampi).
11.
Od u m, E. P.: Ecology, New York 1963. (prijevod na njemački, BLV, München—
Basel—Wien, 1967).
12.
Zyrjaev , A. G.: Izučenie vzaimoo´tnošenij porod v smešanvh nasaždenijah
s pomošč´ju mecenyh atomov, Lesn. Hoz. 8, 1963, str. 24—26.
APPLICATION OF RADIOACTIVE ISOTOPES IN SILVICULTURE


Summary


Application of radioactive isotopes in silvicultural experiments and especially
in experimental ecology represents a method by means of which we obtain exact
results rapidly. The author believes that experiments with radioactive isotopes
ought to be focused on the following:


1.
Inwestigation on the respouse of individual varieties of forest tree species
to the adding of radioactive biogenic elements to the soil, their effect on the
assimilatory ared and the respouse when added directly to the conducting
elements of the stem.
Such investigations are of interest to the silvicultural technique, which for the
purpose of increasing the yield uses mineral fertilizers. As this country´s forest and
other soils lack mainly in phosphorus, there would come into consideration primarily
the application of the radioactive isotope of phosphorus (P32) which is added
in the form of superphosphate or other phosphatic fertilizer.


2.
Investigation on the biochemical influence among individual varieties of
forest tree species having in view primarily the inhibitors of physiological
processes which in their structure contain chemical elements whose existing
radioactive isotopes are suitable for biological experiments.
3.
Investigation into the natural root-grafting of neighbouring stems oT forest
tree species by applying a suitabla radioactive isotope to the conducting
tissues of the tree.
4.
Establishing the affinity of individual members of a biocenosis to main
varieties of forest tree species by applying pairs of radioactive isotopes.
5.
Establishing the movement of carbon dioxide within the relation atmosphere
— forest tree and soil — atmosphere — forest tree by applying radioactive
carbon dioxide (C14).
The experiments mentioned under 2—5 are of special value in understanding
the forest ecosystem and the competition among forest tree species as well as the
interrelationships of individual members of a biocoenosis.


At the end is given an account of some foreign and the author´s own investigations,
in which radioactive isotopes were used.