Scientia Silvae Sinicae ›› 2020, Vol. 56 ›› Issue (1): 65-73.doi: 10.11707/j.1001-7488.20200107
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Baoguo Yang,Hongyan Jia,Jian Hao,Yunxing Li,Shengjiang Pang,Shiling Liu,Pei Zhang,Changhai Niu,Daoxiong Cai*
Received:
2019-01-18
Online:
2020-01-25
Published:
2020-02-24
Contact:
Daoxiong Cai
Supported by:
CLC Number:
Baoguo Yang, Hongyan Jia, Jian Hao, Yunxing Li, Shengjiang Pang, Shiling Liu, Pei Zhang, Changhai Niu, Daoxiong Cai. Growth Variation of Heartwood and Sapwood of Teak (Tectona grandis) Plantations at Different Ages[J]. Scientia Silvae Sinicae, 2020, 56(1): 65-73.
Table 1
Information of T. grandis plots"
样地 Plot | 海拔 Altitude/m | 坡度 Slope/(°) | 坡位 Slope position | 坡向 Slope aspect | 造林年份 Planting year | 调查年份 Survey year | 林龄 Stand age/a | 造林密度 Planting density/ (tree ·hm-2) |
QSHL1 | 150 | 5 | 下Down | 东北Northeast | 2008 | 2017 | 10 | 2 500 |
QSHL2 | 150 | 5 | 下Down | 东北Northeast | 2008 | 2017 | 10 | 2 500 |
QSHL3 | 150 | 5 | 下Down | 东北Northeast | 2008 | 2017 | 10 | 2 500 |
QSHL4 | 150 | 5 | 下Down | 东北Northeast | 2008 | 2017 | 10 | 2 500 |
QSPJ1 | 175 | 25 | 下Down | 东East | 1995 | 2012 | 18 | 2 500 |
QSPJ2 | 175 | 27 | 下Down | 东East | 1995 | 2012 | 18 | 2 500 |
BY1 | 232 | 30 | 下Down | 东南Southeast | 1982 | 2012 | 31 | 2 500 |
BY2 | 230 | 35 | 下Down | 东南Southeast | 1982 | 2012 | 31 | 2 500 |
BY3 | 350 | 40 | 下Down | 西北Northwest | 1982 | 2012 | 31 | 2 500 |
QS1 | 199 | 0 | 下Down | 西北Northwest | 1983 | 2013 | 31 | 2 500 |
QS3 | 153 | 16 | 下Down | 北North | 1983 | 2013 | 31 | 2 500 |
QS4 | 164 | 18 | 下Down | 北North | 1983 | 2013 | 31 | 2 500 |
SPXS1 | 199 | 11 | 下Down | 东East | 1973 | 2013 | 41 | 2 500 |
SPXS2 | 195 | 8 | 下Down | 东北Northeast | 1995 | 2012 | 18 | 2 500 |
SPXS3 | 190 | 10 | 下Down | 东East | 1973 | 2013 | 41 | 2 500 |
Table 2
Basic characteristics of different aged T. grandis stand"
林龄 Stand age/a | 样地数量 Plot number | 样木数量 Sample tree number | 胸径 DBH/cm | 树高 Tree height/m | 枝下高 Height to crown base/m | 冠幅 Crown width/m |
10 | 4 | 10 | 15.8±3.9 | 15.7±2.4 | 5.5±1.7 | 6.9±1.4 |
18 | 3 | 9 | 12.1±3.2 | 12.4±1.4 | 5.8±1.9 | 3.2±1.2 |
31 | 6 | 17 | 27.4±6.3 | 21.4±2.6 | 11.6±2.6 | 6.0±1.5 |
41 | 2 | 6 | 37.2±7.2 | 24.9±1.1 | 11.3±1.6 | 6.4±1.2 |
Table 3
Between-trees variations in sapwood and heartwood amount and maximum height of heartwood disappearance"
林龄 Stand age/a | 变异系数Coefficient of variation (%) | ||||
心材半径 Heartwood radius | 心材面积 Heartwood area | 边材宽度 Sapwood width | 边材面积 Sapwood area | 心材消失最大高度 Maximum height of heartwood disappearance | |
10 | 29.70 | 53.56 | 24.72 | 34.48 | 18.85 |
18 | 31.45 | 62.70 | 25.97 | 40.25 | 27.28 |
31 | 23.99 | 45.34 | 18.59 | 29.43 | 15.80 |
41 | 27.32 | 53.64 | 23.75 | 46.03 | 7.98 |
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