Full text of this article is only available in PDF format.

Paavo Yli-Vakkuri (email)

Emergence and initial development of tree seedlings on burnt-over forest land

Yli-Vakkuri P. (1961). Emergence and initial development of tree seedlings on burnt-over forest land. Acta Forestalia Fennica vol. 74 no. 1 article id 7128. https://doi.org/10.14214/aff.7128

Abstract

Prescribed burning has been used in regeneration areas in Finland as a method to treat the humus layer and creating more favourable chemical, physical and biological conditions for the seedlings. At the same time, fire clears away seedlings and shoots of unwanted trees and other vegetation. Direct sowing or planting, mostly Scots pine (Pinus sylvestris L.), seldom natural regeneration, is used. In this paper, the initial stages of the formation of a new tree generation of Scots pine and Norway spruce (Picea abies (L.) Karst.) on prescribed burned areas is studied in Central Finland in 1956–1960.

The burned area remains almost without vegetation for about two growing seasons. Conditions on a burned area which has not been tiled are very unfavourable for germination of seeds of coniferous and deciduous trees. On the other hand, shoots of deciduous trees occur soon after burning. Conditions for regeneration were found to be better 3–5 years after burning. Removal of humus layer in spots improved regeneration. However, the patches facilitated also natural regeneration of Norway spruce and especially birch (Betula sp.), which compete with Scots pine seedlings.

Continuous rainy periods improved the germination of Scots pine and Norway spruce seeds sown on the humus layer. Pine and spruce developed more rapidly on the exposed soil, however, young seedlings were easily destroyed. Seed eaters destroyed the pine and spruce seeds sown on the humus layer of newly burned areas completely or almost completely. The viability of pine seeds sown on the burned humus layer did not decrease for three weeks, but the viability greatly weakened after six or more weeks. Spruce seeds lost their viability faster than pine seeds.

The PDF includes a summary in Finnish.

Keywords
Pinus sylvestris; Norway spruce; Picea abies; germination; regeneration; Scots pine; seeds; prescribed burning; sowing; seeding

Published in 1961

Views 1289

Available at https://doi.org/10.14214/aff.7128 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Your search results
Yli-Vakkuri P., Pelkonen P. (1976) Rooting of Scots pine needle fascicles with diff.. Silva Fennica vol. 10 no. 4 article id 4956
Luukkanen O., Räsänen P. K. et al. (1971) The use of needle colour in predicting growth an.. Silva Fennica vol. 5 no. 4 article id 4853
Yli-Vakkuri P., (1971) Winter frost damages to the leaders of Norway sp.. Silva Fennica vol. 5 no. 2 article id 4840
Yli-Vakkuri P., Räsänen P. K. (1971) The influence of covering and tramping the seeds.. Silva Fennica vol. 5 no. 1 article id 4832
Räsänen P. K., Koukkula A. et al. (1970) The effect of packing, storing and heeling-in on.. Silva Fennica vol. 4 no. 1 article id 4812
Yli-Vakkuri P., (1968) Book review: Produksjon av skogspanter Silva Fennica vol. 2 no. 4 article id 4781
Yli-Vakkuri P., Autio A. et al. (1968) Time lag between final cutting and regeneration Silva Fennica vol. 2 no. 3 article id 4769
Yli-Vakkuri P., (1955) Elk damage in seedling stands of Scots pine in O.. Silva Fennica vol. no. 88 article id 4648
Yli-Vakkuri P., (1955) Studies on crop marking of District Forestry Boa.. Silva Fennica vol. no. 87 article id 4646
Yli-Vakkuri P., (1954) Time studies on stone work done in forest drainage Silva Fennica vol. no. 84 article id 4643
Yli-Vakkuri P., (1961) Experimental studies on the emergence and develo.. Acta Forestalia Fennica vol. 75 no. 1 article id 7135
Yli-Vakkuri P., (1961) Studies on the development of young sown pine st.. Acta Forestalia Fennica vol. 74 no. 3 article id 7130
Yli-Vakkuri P., (1961) Emergence and initial development of tree seedli.. Acta Forestalia Fennica vol. 74 no. 1 article id 7128
Yli-Vakkuri P., (1960) Snow cover and ground frost in Finnish forests Acta Forestalia Fennica vol. 71 no. 5 article id 7114
Yli-Vakkuri P., (1959) On machines for abrading seed wings and their in.. Acta Forestalia Fennica vol. 68 no. 4 article id 7486
Yli-Vakkuri P., (1959) A method for establishing small permanent sample.. Acta Forestalia Fennica vol. 68 no. 3 article id 7485
Yli-Vakkuri P., (1958) Studies on prescribed burning of drained peatlands Acta Forestalia Fennica vol. 67 no. 4 article id 7478
Yli-Vakkuri P., (1954) Marking trees for cutting by professionals of ad.. Acta Forestalia Fennica vol. 61 no. 6 article id 7418
Yli-Vakkuri P., (1953) Studies on physical root connections between the.. Acta Forestalia Fennica vol. 60 no. 3 article id 7410
Yli-Vakkuri P., Räsänen P. K. et al. (1968) Cold-storage and its effects on the field surviv.. Acta Forestalia Fennica vol. 0 no. 88 article id 7188