scholarly journals Climate risks and age-related damage probabilities – effects on the economically optimal rotation length for forest stand management in Japan

Silva Fennica ◽  
2000 ◽  
Vol 34 (2) ◽  
Author(s):  
Hirofumi Kuboyama ◽  
Hiroyasu Oka
Keyword(s):  
Forest Stand ◽  
Rotation Length ◽  
Stand Management ◽  
Climate Risks ◽  
Age Related ◽  
Optimal Rotation

Optimal management of Pinus pinaster in Galicia (Spain) under risk of fire

2010 ◽  
Vol 19 (7) ◽  
pp. 937 ◽  
Author(s):  
María Pasalodos-Tato ◽  
Timo Pukkala ◽  
Alberto Rojo Alboreca
Keyword(s):  
Forest Fires ◽  
Pinus Pinaster ◽  
Fire Risk ◽  
Growth And Yield ◽  
Fire Occurrence ◽  
Rotation Length ◽  
Stand Management ◽  
Optimal Rotation ◽  
Soil Expectation Value ◽  
Growth And Yield Models

Pinus pinaster is the most important conifer in Galicia in terms of volume and production, occurs mainly in plantations. Forest fires are the main threat to forest plantations, affecting optimal stand management. The aim of this study was to develop management prescriptions for P. pinaster based on growth and yield models and optimisations. The objective function was soil expectation value, calculated taking the expected fire losses into account. Fire risk was assumed to consist of two components, probability of occurrence and damage. As the main cause of forest fires in Galicia is arson, the manager cannot significantly influence fire occurrence, which was assumed to be exogenous. Salvage was treated as an endogenous factor depending on the management schedule followed in the stand. Optimisations were done for different initial stands, timber assortments, discount rates and probabilities of fire occurrence. Based on the optimisation results, regression models were developed for the optimal rotation length as well as the timing and intensity of thinnings. The results show that when fire risk is partly endogenous, optimal rotation lengths become shorter with increasing probability of fire occurrence, and optimal thinning becomes heavier and earlier. However, without a price reduction for burned timber, the optimal rotation length increases with increasing probability of fire.

The optimal rotation of a flammable forest stand

1980 ◽  
Vol 10 (1) ◽  
pp. 30-34 ◽  
Author(s):  
D. L. Martell
Keyword(s):  
Stochastic Model ◽  
Fire Management ◽  
Jack Pine ◽  
Forest Stand ◽  
Timber Production ◽  
Forest Stands ◽  
Rotation Interval ◽  
Optimal Rotation

The author describes a stochastic model of forest stand rotation which can be used to determine the optimal planned rotation interval for flammable forest stands. The model can also be used to estimate the value of fire management activities in terms of the potential enhanced value of timber production. The use of the model is illustrated by applying it to a simplified case of jack pine (Pinusbanksiana, Lamb.) management.

scholarly journals Application of Mg-fertilizers to prevent and to decrease Norway spruce yellowing

2019 ◽  
Vol 51 (Special Issue) ◽  
pp. 43-48 ◽  
Author(s):  
V.V. Podrázský ◽  
S. Vacek ◽  
J. Remeš ◽  
I. Ulbrichová
Keyword(s):  
Czech Republic ◽  
Norway Spruce ◽  
Forest Decline ◽  
Forest Stand ◽  
Considerable Improvement ◽  
Air Pollutant ◽  
Ecological Analysis ◽  
The Czech Republic ◽  
Stand Management ◽  
Areas Of Interest

Yellowing of the Norway spruce is a relatively common problem in many areas of the Czech Republic. In some of them, it is also connected with forest decline; it was studied in the Šumava (Bohemian Forest) Mts. and in the western part of the Krušné hory Mts. This unfavourable phenomenon is initiated by several ecological as well as anthropic processes, one of the most important being the imbalance of forest stand nutrition. Particular reasons lead to the deficiency of nutrients, especially of magnesium. Solution of this undesirable trend is the profound ecological analysis and cause-oriented treatments. Besides lowering the air pollutant input, fertilization with deficient nutrients is a successful treatment in the forest stand management in affected areas. In the areas of interest, the application of a relatively small amount of appropriate fertilizer (SILVAMIX Mg) led to considerable improvement in the defoliation dynamics and yellowing progress since the first years after use.

scholarly journals Männi-, kuuse- ja kasepuistute majandamise tasuvus lühikese raieringi korral / Profitability analysis of short rotations in Scots pine, Norway spruce and silver birch stands

2011 ◽  
Vol 54 (1) ◽  
pp. 28-36 ◽  
Author(s):  
Henn Korjus ◽  
Priit Põllumäe ◽  
Siim Rool
Keyword(s):  
Forest Management ◽  
Norway Spruce ◽  
Scots Pine ◽  
Simulation Software ◽  
Forest Growth ◽  
Silver Birch ◽  
Growth And Yield ◽  
Rotation Length ◽  
Profitability Analysis ◽  
Optimal Rotation

Abstract. Estonian forest management is based traditionally on long rotations. Recent trends in wood industry and wood consumption promote also production of small-size timber for bioenergy and timber products. This opens a discussion about shorter rotations and intensive forest management again in Estonia. In current study, profitability of Scots pine, Norway spruce and silver birch stand management on fertile soils was analyzed according to three different rotation lengths: traditional long rotation, short rotation and economically optimal rotation according Finnish TAPIO rules. Stand simulation software MOTTI was used to simulate and optimize forest growth and management. Simulation results were compared with actual data on forest growth and yield in Estonia. Economically optimal rotations were for Scots pine stand 58 years, Norway spruce stand 53 years and silver birch stand 41 years. Short and optimal rotation length enable 5.9-6.5% profitability for forest owner, traditional long rotation length enables 4.8-5.4% profitability. Rotation forestry is challenging task. Based on our analysis, it is likely that applied practices can intensify wood production and reduce forest management risks. However, theoretical approach is not enough for assessing practical feasibility of short rotations. Thus further studies and experiments are needed for careful analysis and recommendations

scholarly journals The influences of forest stand management on biotic and abiotic risks of damage

2009 ◽  
Vol 66 (7) ◽  
pp. 701-701 ◽  
Author(s):  
Hervé Jactel ◽  
Bruce C. Nicoll ◽  
Manuela Branco ◽  
José Ramon Gonzalez-Olabarria ◽  
Wojciech Grodzki ◽  
...  
Keyword(s):  
Forest Stand ◽  
Stand Management

OPTIMAL FOREST STAND MANAGEMENT WHEN BENEFITS ARE DERIVED FROM CARBON

1994 ◽  
Vol 8 (4) ◽  
pp. 373-387 ◽  
Author(s):  
Andrew J. Plantinga ◽  
Richard A. Birdsey
Keyword(s):  
Forest Stand ◽  
Stand Management
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