Table 9 The role of planted stands in increasing actual mean stock increment of Scots pine. (Source: state forest inventory materials of forests)
Forest name | Location | Mean annual increment of standing volume (m3 ha−1 year−1) | |||||||
|---|---|---|---|---|---|---|---|---|---|
All stands | Stands <70 years old | ||||||||
Natural | Planted | Difference | Natural | Planted | Difference | ||||
Absolute | Percentage | Absolute | Percentage | ||||||
Voskresenskoe | Nizhny Novgorod oblast | 3.20 | 3.49 | 0.29 | 8.9 | 3.41 | 3.49 | 0.08 | 2.1 |
Staroustinskoe | Nizhny Novgorod oblast | 3.42 | 5.59 | 2.17 | 63.3 | 4.53 | 5.62 | 1.08 | 23.9 |
Agryzskoe | Republic of Tatarstan | 3.92 | 5.09 | 1.17 | 29.8 | 4.43 | 5.16 | 0.73 | 16.6 |
Scientific and experimental | Republic of Mari El | 3.10 | 3.40 | 0.30 | 9.7 | 3.31 | 3.47 | 0.16 | 4.7 |
Kokshayskoe | Republic of Mari El | 3.11 | 3.57 | 0.46 | 14.8 | 3.58 | 5.04 | 1.46 | 40.9 |
Kuyarskoe | Republic of Mari El | 3.06 | 3.67 | 0.62 | 20.2 | 3.54 | 3.67 | 0.13 | 3.7 |
Kadadinskoe | Penzenskaya oblast | 3.53 | 4.41 | 0.88 | 24.84 | 4.37 | 4.46 | 0.09 | 2.12 |