Annals of Forest Science

, 74:44

Beech coppice conversion to high forest: results from a 31-year experiment in Eastern Pre-Alps

  • Barbara Mariotti
  • Giorgio Alberti
  • Alberto Maltoni
  • Andrea Tani
  • Pietro Piussi
Original Paper

Abstract

Keymessage

Selective thinning is a more viable method for beech coppice conversion to high forest when compared with thinning from below as it enhances tree growth, reduces mortality of the remaining trees, and allows to obtain stands with a higher mechanical stability and larger crowns.

Context

Beech forests in North-East Italy have been largely managed as coppice. Due to socio-economic changes, a large conversion to high forests program started in the second half of the past century.

Aims

A long-term experiment testing the effects on tree growth and stability of two different conversion methods (thinning from below—method A; selective thinning—method B) was implemented.

Methods

Both silvicultural treatments started in 1979 with a first thinning followed by a second one in 1997. All trees were periodically measured in order to assess mortality, stability, and growth during the period 1979–2010. In 2010, an assessment of stem quality and crown size was also performed.

Results

Both methods were economically viable, but method B acted with a higher intensity both in 1979 and in 1997, thus making the harvest more profitable for the owners. Moreover, method B enhanced tree growth, especially in the period after the first thinning, reduced mortality, and allowed to obtain stands with a higher mechanical stability and with larger crowns.

Conclusion

It would be possible to adopt some of the criteria prescribed with method B in future thinnings over the large areas actually managed with method A, as prescribed by the law.

Keywords

Coppice conversion Beech Thinning Fagus sylvatica 

Copyright information

© INRA and Springer-Verlag France 2017

Authors and Affiliations

  1. 1.Dipartimento di Gestione Sistemi Agrari, Alimentari e ForestaliUniversità di FirenzeFlorenceItaly
  2. 2.Dipartimento di Scienze Agroalimentari, Ambientali ed AnimaliUniversità di UdineUdineItaly
  3. 3.CNR-IBIMETFlorenceItaly

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