DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 5-6/1964 str. 62     <-- 62 -->        PDF

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AFFORESTATION OF DEGRADED KARST AREAS BY SOWING


Summary


In the introduction the author deals with the question of economy of work in
the afforestation of degraded Karst region and states that sowing would be by far
cheaper than planting. Into consideration is taken natural afforestation through
seedling; pointed out are the conditions under which this occurs in nature. Reference
is imade to factors under which naturali regeneriatjion through seeding is possible, and
emphasis is laid on the ecological conditions under which it comes into being. The
large quantities of seed and the long time intervals in which natural seeding occurs
are pointed out.


Conditions are ditfcussed for the establishment of forest in degraded Karst areas
and especially conditions which are unfavourable as regards the soil characteristic
and fructification. The unfavourable climatic factors during the germination of seed
are likewise mentioned. There is scarcity of water during the drought periods which
causes the dying away of new growth because of the dessication of the soil or
inefficient protection against the insolation and because of the action of other factors.


The author also discusses the history of sowing on the degraded Karst region
as well as the opinions of specialists concerning these activities. It is stated that sowing
was successful only__with a few Pine species. Mention is made of species with which
most of the sowing trials were made, and he estimates the results to have been
poor.


Then the author reports on the method of afforestation such as: sawing with
dibble, sowing in prepared patches and braadcast sowing. He explains the .successful
broadcast sowing of P. Halepensis and of P. nigra ssp. austriaca in