Abstract
A computer simulation program (STAOET) was used to evaluate various thinning treatments for Picea abies. Treatment varied in: initial number of trees/ha (2500 vs. 5000); thinning intensity (weak, very strong, or graduated, i.e. early thinning strong, later weak); age (from 15 to 50 years) at first thinning; and age and number of later thinnings. Preliminary, final and total harvests were evaluated in terms of: volume (total, small timber, and log timber), mean diameter b.h., average volume/tree, and net value. Effects of varying site class index, rotation time, and timber cost/price structures (of small timber vs. log timber) were also studied. Low initial number of trees/ha and/or early reduction in tree number tended to give markedly higher final log timber volume, average diameter b.h., average volume/tree, and net value; resistance to snow damage also increased due to decrease in height/diameter ratio. (Refs. 2).
Citation Formats
Johann, K, and Pollanschuetz, J.
Profitable thinning: dream or reality. Main conclusions from the FPP-study 'the influences of growing space regulation on the operational success of spruce management units'.
Austria: N. p.,
1980.
Web.
Johann, K, & Pollanschuetz, J.
Profitable thinning: dream or reality. Main conclusions from the FPP-study 'the influences of growing space regulation on the operational success of spruce management units'.
Austria.
Johann, K, and Pollanschuetz, J.
1980.
"Profitable thinning: dream or reality. Main conclusions from the FPP-study 'the influences of growing space regulation on the operational success of spruce management units'."
Austria.
@misc{etde_5439576,
title = {Profitable thinning: dream or reality. Main conclusions from the FPP-study 'the influences of growing space regulation on the operational success of spruce management units'}
author = {Johann, K, and Pollanschuetz, J}
abstractNote = {A computer simulation program (STAOET) was used to evaluate various thinning treatments for Picea abies. Treatment varied in: initial number of trees/ha (2500 vs. 5000); thinning intensity (weak, very strong, or graduated, i.e. early thinning strong, later weak); age (from 15 to 50 years) at first thinning; and age and number of later thinnings. Preliminary, final and total harvests were evaluated in terms of: volume (total, small timber, and log timber), mean diameter b.h., average volume/tree, and net value. Effects of varying site class index, rotation time, and timber cost/price structures (of small timber vs. log timber) were also studied. Low initial number of trees/ha and/or early reduction in tree number tended to give markedly higher final log timber volume, average diameter b.h., average volume/tree, and net value; resistance to snow damage also increased due to decrease in height/diameter ratio. (Refs. 2).}
journal = []
volume = {91:11}
journal type = {AC}
place = {Austria}
year = {1980}
month = {Jan}
}
title = {Profitable thinning: dream or reality. Main conclusions from the FPP-study 'the influences of growing space regulation on the operational success of spruce management units'}
author = {Johann, K, and Pollanschuetz, J}
abstractNote = {A computer simulation program (STAOET) was used to evaluate various thinning treatments for Picea abies. Treatment varied in: initial number of trees/ha (2500 vs. 5000); thinning intensity (weak, very strong, or graduated, i.e. early thinning strong, later weak); age (from 15 to 50 years) at first thinning; and age and number of later thinnings. Preliminary, final and total harvests were evaluated in terms of: volume (total, small timber, and log timber), mean diameter b.h., average volume/tree, and net value. Effects of varying site class index, rotation time, and timber cost/price structures (of small timber vs. log timber) were also studied. Low initial number of trees/ha and/or early reduction in tree number tended to give markedly higher final log timber volume, average diameter b.h., average volume/tree, and net value; resistance to snow damage also increased due to decrease in height/diameter ratio. (Refs. 2).}
journal = []
volume = {91:11}
journal type = {AC}
place = {Austria}
year = {1980}
month = {Jan}
}