|
Species/groups |
Distribution areas of sample trees for stem analysis |
Equations** |
Sampled trees |
Max. age (yr) |
| Pinus yunnanensis |
Southeastern Tibet, Southwestern Sichuan, Yunnan |
Y = 342.0955X-1.19741 r = 0.9553 |
81 |
149 |
|
Pinus densata, P. griffithii, P. roxburghii |
Southeastern Tibet |
Y = 230.3096X-1.02269 r = 0.9416 |
13 |
170 |
| Pinus tabulaeformis |
Northwestern China |
Y = 166.1814X-0.90213 r = 0.8338 |
53 |
200 |
|
Picea sp. |
Southwestern Sichuan, Southeastern Tibet, Northwestern Yunnan |
Y = 359.2038X-1.12853 r = 0.9321 |
65 |
357 |
|
Abies sp. |
Southwestern Sichuan, Southeastern Tibet, Northwestern Yunnan |
Y = 222.0472X-0.98315 r = 0.8787 |
119 |
355 |
|
Picea sp. |
Northwestern Sichuan, Gansu, Shanxi |
Y = 412.0728X-1.08861 r = 0.8705 |
103 |
250 |
|
Abies sp. |
Northwestern Sichuan, Gansu, Shanxi |
Y = 177.7966X-0.87647 r = 0.7672 |
32 |
178 |
|
Larix sp. |
Southeastern Tibetan Plateau |
Y = 237.6075X-1.01322 r = 0.9573 |
5 |
100 |
|
Betula sp. |
Western China |
Y = 125.0858X-0.82099 r = 0.8832 |
65 |
148 |
| Populus davidiana |
Western China |
Y = 112.7959X-0.79937 r = 0.8637 |
21 |
96 |
|
Populus plantations |
Western China |
Y = 206.0585X-0.96235 r = 0.8577 |
34 |
102 |
|
Other deciduous trees |
Western China |
Y = 157.8460X-0.91578 r = 0.9118 |
62 |
175 |
| Cyclobalanopsis
Evergreen trees |
Southwestern China |
Y = 179.2641X-0.89758 r = 0.8812 |
22 |
130 |
| Machilus
Evergreen trees |
Southwestern China |
Y = 264.1693X-1.05536 r = 0.9254 |
18 |
121 |
| Lithocarpus
Evergreen trees |
Southwestern China |
Y = 374.9153X-1.15552 r = 0.9391 |
11 |
95 |
Notes: X was for tree age (yr.). Data sets were collected in Luo (1996).
**All significance levels at P< 0.001.
Literature cited
Luo, T.-X. 1996. Patterns of net primary productivity for Chinese major forest types and their mathematical models, Ph.D. Dissertation. Commission for Integrated Survey of Natural Resources, Chinese Academy of Sciences, Beijing [in Chinese].