A tentative model for describing the effects of some regenerative process on the properties of natural seedling stands.

Kellomäki, Seppo; Hänninen, Heikki; Kolström, Taneli; Kotisaari, Ahti; Pukkala, Timo

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Silva Fennica vol. 21 no. 1 article id 5302 | 1987 | Article

Seppo Kellomäki , Heikki Hänninen, Taneli Kolström, Ahti Kotisaari, Timo Pukkala

A tentative model for describing the effects of some regenerative process on the properties of natural seedling stands.

Kellomäki S., Hänninen H., Kolström T., Kotisaari A., Pukkala T. (1987). A tentative model for describing the effects of some regenerative process on the properties of natural seedling stands. Silva Fennica vol. 21 no. 1 article id 5302. https://doi.org/10.14214/sf.a15459

Abstract

The effect of the size of seed crop, dispersal of seeds and the early development of seedlings on the density and spatial distribution of young Scots pine (Pinus sylvestris L.) stands are evaluated on the basis of theoretical models. The models include (i) number and spatial distribution of parent trees on the regeneration area, (ii) size of annual seed crop, (iii) seed dispersal from a particular parent tree, (iv) germination of the seeds (germination percentage), (v) death of ageing seedlings after the establishment process, and (vi) height growth of the seedlings.

As expected, stand density and spatial distribution varied within a large range in relation to the density of the parent trees and the distance from them. The simulations also showed that natural seedling stands can be expected to be heterogenous due to the geometry of seed dispersal, emphasizing the frequency of young and small trees. The properties of the seedling stands were, however, greatly dependent on the density of the parent trees and the length of the regeneration period.

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Keywords
Pinus sylvestris; natural regeneration; Scots pine; modelling; stand density; seed crop; seed dispersal; parent tree

Published in 1987

Available at https://doi.org/10.14214/sf.a15459 | Download PDF

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