Long-term Growth Effects Following Forest Nitrogen Fertilization in Pinus sylvestris and Picea abies Stands in Sweden

2004 ◽  
Vol 19 (4) ◽  
pp. 339-347 ◽  
Author(s):  
Folke Pettersson ◽  
Lars Högbom
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Nitrogen Fertilization ◽  
Growth Effects

Stem-growth response of Pinus sylvestris and Picea abies to nitrogen fertilization as related to needle nitrogen concentration

Trees ◽  
1998 ◽  
Vol 12 (4) ◽  
pp. 208-214 ◽  
Author(s):  
U. Sikström ◽  
Hans-Örjan Nohrstedt ◽  
Folke Pettersson ◽  
Staffan Jacobson
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Nitrogen Fertilization ◽  
Growth Response ◽  
Nitrogen Concentration ◽  
Stem Growth

The Major Results of the Silvicultural Heritage of the Forester K.F. Turmer

2020 ◽  
pp. 201-210
Author(s):  
M.D. Merzlenko ◽  
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Russian Plain ◽  
Forest Site ◽  
Site Conditions ◽  
European Larch ◽  
Term Study ◽  
Long Term Study ◽  
Coniferous Wood

Bibliography of academic papers on forestry activities of the well-known forester K.F. Turmer has more than 150 titles, including papers by the author of this article (more than 20). Today, almost 2,000 ha of his plantings have been preserved in the center of the Russian Plain. The purpose of the article is to summarize the silvicultural heritage of K.F. Turmer. The results of this study indicate the compliance with the conformity principle of conifers with forest site conditions along with optimal patterns of their mixing and placement of planting points. The results of a long-term study of the K.F. Turmer’s forest crops showed that in rich forest site conditions of indigenous spruce forests the creation of pine-spruce plantations is the most promising. The plantations in composition of 7 Scots pines (Pinus sylvestris) and 3 Norway spruces (Picea abies) in 100 years produce 800 m3 of trunk wood per 1 ha. The introduction of European larch has shown very good results. In forest crops it is capable to produce 1,000 or more m3 of trunk wood per 1 ha in combination with ripe spruce. Indeed K.F. Turmer implemented the principle of plantation forestry, which allows significantly increasing the silvicultural effect and reducing the age of felling in order to obtain commercial coniferous wood.

Initial rates and limit values for decomposition of Scots pine and Norway spruce needle litter: a synthesis for N-fertilized forest stands

2000 ◽  
Vol 30 (1) ◽  
pp. 122-135 ◽  
Author(s):  
Björn Berg
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Norway Spruce ◽  
Scots Pine ◽  
Nitrogen Fertilization ◽  
N Fertilization ◽  
Simple Equation ◽  
Forest Stands ◽  
Limit Values ◽  
Needle Litter

Nitrogen fertilization increased concentrations of N, P, S, and K in Scots pine (Pinus sylvestris L.) needle litter, and in those of N, S, and Ca in Norway spruce (Picea abies (L.) Karst.). Lignin concentrations increased for both species. Initial rates and limit values for decomposition were estimated using a simple equation. For Scots pine litter, initial rates ranged between 0.0618 and 0.2986%/day with P, K, N, and Mg being positively related, but lignin and Ca negatively related. For Norway spruce, initial rates were low (0.0455-0.1007%/day) and positively related with initial concentrations of water solubles, K, and P but negatively with N, Ca, and lignin. Limit values for Scots pine litter ranged from 53.1 to 94.3% decomposition in fertilized plots and from 71.5 to 93.2% in controls. They were negatively related to N concentrations and positively to Mn and Ca. Limit values for Norway spruce litter ranged from 53.8 to 74.3% in controls and from 48 to 71.3% in fertilized plots and were positively correlated to Mn and Ca but not to N. The paper concludes that N fertilization will increase the fraction of Scots pine litter that accumulates as humus but not for Norway spruce.

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