Table 2 Characteristics of the nine theoretical harvests simulated. This table presents mean value (first line) and standard deviation (second line, in italics) obtained for the total number of trees (t/ha) and volume (m3/ha) removed by each of the nine theoretical harvests simulated, as well as for Dq ratio (DqCut/DqBefore). The three thinning methods are based on the same target volume (100 m3/ha) but differs in the percentage of total number of trees to be removed (15, 25 or 45% of Ntot)
From: Reconstructing harvesting diameter distribution from aggregate data
Thinning method | Selection thinning | Mechanical thinning | Low thinning | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
N target (% Ntot) | 15% Ntot | 25% Ntot | 45% Ntot | |||||||
Variable | Ncut (t/ha) | Vcut (m3/ha) | Dq ratio | Ncut (t/ha) | Vcut (m3/ha) | Dq ratio | Ncut (t/ha) | Vcut (m3/ha) | Dq ratio | |
DBH distribution of initial stand | Even-aged | 60.00 | 99.44 | 1.24 | 100.00 | 100.03 | 1.00 | 180.00 | 100.72 | 0.79 |
0.00 | 0.42 | 0.00 | 0.00 | 0.62 | 0.00 | 0.00 | 0.28 | 0.00 | ||
Two-layer | 78.00 | 99.81 | 1.26 | 130.00 | 100.00 | 1.00 | 234.00 | 100.20 | 0.77 | |
0.00 | 0.57 | 0.00 | 0.00 | 0.60 | 0.00 | 0.00 | 0.58 | 0.00 | ||
Uneven-aged | 158.00 | 99.71 | 1.25 | 262.00 | 99.99 | 1.00 | 472.00 | 100.35 | 0.77 | |
0.00 | 0.60 | 0.01 | 0.00 | 0.66 | 0.01 | 0.00 | 0.59 | 0.00 | ||