Table 8.
Component wise net primary productivity (t ha–1 year–1) in trees, shrubs and herbs of Shisham forests in central Himalaya
| Age of Shisham forests (years) | |||
| Vegetation | 5 | 10 | 15 |
| Tree layer | 9·1 ± 1·25 | 12·5 ± 1·76 | 16·7 ± 2·02 |
| % Allocation in | |||
| bole* | 61·5 | 63·2 | 60·4 |
| branch† | 11·1 | 11·2 | 11·4 |
| leaf | 6·6 | 4·8 | 4·8 |
| reproductive part | 1·0 | 1·6 | 1·8 |
| coarse roots‡ | 14·3 | 12·8 | 15·6 |
| fine roots | 5·5 | 6·4 | 6·0 |
| Shrub layer | 0·7 ± 0·74 | 1·2 ± 0·85 | 1·3 ± 0·98 |
| % Allocation | |||
| above‐ground§ | 71·4 | 75·0 | 69·2 |
| below‐ground | 28·6 | 25·0 | 30·8 |
| Herb layer | 2·8 ± 1·42 | 2·6 ± 1·68 | 2·4 ± 1·92 |
| % Allocation | |||
| above‐ground | 78·9 | 78·1 | 75·8 |
| below‐ground | 21·1 | 21·9 | 24·2 |
| Total vegetation | 12·6 ± 1·14 | 16·3 ± 1·43 | 20·3 ± 1·64 |
* Bole wood + bark, which accounted for 8·9–10·4 % of the values. † Branch + twigs (current shoots bearing leaves), which accounted for 3·3–4·0 % of the values. ‡ Stump root (main root) + lateral roots (lateral branches of main root), which accounted for 3·2–7·2 % of the values. § Stem + foliage, which accounted for 14·3–16·7 % of the values.