Productivity of mixed stands of Pinus sylvestris and Picea abies

1994 ◽  
Vol 9 (1-4) ◽  
pp. 143-153 ◽  
Author(s):  
Timo Pukkala ◽  
Jouni Vettenranta ◽  
Taneli Kolström ◽  
Jari Miina
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Mixed Stands

A spatial yield model for optimizing the thinning regime of mixed stands of Pinus sylvestris and Picea abies

1998 ◽  
Vol 13 (1-4) ◽  
pp. 31-42 ◽  
Author(s):  
Timo Pukkala ◽  
Jari Miina ◽  
Mikko Kurttila ◽  
Taneli Kolström
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Yield Model ◽  
Mixed Stands

scholarly journals Nemoralisation of Pinus sylvestris and Picea abies Forest Stands in the Hemi-Boreal Zone: A Case Study from Latvia

2021 ◽  
Vol 75 (4) ◽  
pp. 299-309
Author(s):  
Māris Laiviņš ◽  
Gunta Čekstere ◽  
Dārta Kaupe
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Acer Pseudoplatanus ◽  
Species Trees ◽  
Mixed Stands ◽  
Large Numbers ◽  
Tilia Platyphyllos ◽  
Replacement Process ◽  
Broad Leaved Species

Abstract At the beginning of the 21st century, in extensively managed mature and over-mature conifer stands (Pinus sylvestris and Picea abies) in Latvia, establishment of native deciduous broad-leaved (Acer platanoides, Tilia cordata, Quercus robur and Ulmus laevis), as well as alien broad-leaved species (Acer pseudoplatanus and Tilia platyphyllos) has been observed. The establishment of deciduous broad-leaved species in coniferous stands is a process known as nemoralisation of coniferous stands, which is characterised by a large number of seedlings of broad-leaved species, young trees and the formation of a subcanopy layer in stands. Based on the age measurements of individuals of broad-leaved species trees, the establishment of some individuals into the studied coniferous stands occurred 40–50 years ago — in the 1970s–1980s. However, the predominant age of alien broad-leaved tree species in the study plots was 15–25 years, i.e. the introduction of large numbers of seedlings of these species in the coniferous stands occurred at the end of the 20th century. In this manner, in the final phase of the conifer replacement process, stable, mostly shade tolerant, mixed stands consisting of 3–4 species have formed, in which spruce is often found together with broad-leaved species.

Nutrient fluxes in pure and mixed stands of spruce (Picea abies) and beech (Fagus sylvatica)

2009 ◽  
Vol 322 (1-2) ◽  
pp. 317-342 ◽  
Author(s):  
Torsten W. Berger ◽  
Hubert Untersteiner ◽  
Martin Toplitzer ◽  
Christian Neubauer
Keyword(s):  
Picea Abies ◽  
Fagus Sylvatica ◽  
Nutrient Fluxes ◽  
Mixed Stands
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