Interannual variation characteristics for stand structures in the early stages of new moso bamboo carbon sink stands
-
摘要: 在新造毛竹Phyllostachys edulis碳汇林内，设置80 m 100 m固定标准地，采用固定样地长期连续观测的调查方法，研究新造毛竹 碳汇林在成林前（第1~5年）林分非空间结构动态变化规律及影响因子。结果表明：①新造毛竹碳汇林成林初期，立竹度、林分平均胸径及林分平均竹高是林分结构变化的主导因子，且随着造林后年限的增加，立竹度、林分平均胸径及林分平均竹高均在不断增加。②新造毛竹碳汇林在成林过程中，立竹度（N）随造林后年限（y）的增加而增加，并满足异速生长方程：N=17.214y2+309.21y－ 217.4, R2=0.981 1。③随着造林后年限的增加，新出毛竹的平均胸径逐年增大，新竹平均胸径（DBH）与造林后年限（y）的异速生长方程为：DBH=0.015 7y2+0.727 9y+1.598 0, R2=0.756 5。④每年新出毛竹的平均竹高（H）随着造林后年限（y）的增加而增高，其拟合方程为：H=0.108 5y2+0.429 9y+2.155 3, R2=0.723 2。图4表8参20Abstract: To determine a rule for interannual variation characteristics in non-spatial, structural stands of new moso bamboo （Phyllostachys edulis） based on carbon sink （1－5 a）. An 80 m 100 m fixed plot was established at a long-term, afforestation, fixed observation research site for carbon sequestration. Linear regression and correlation were used for the analysis. Results showed that 1） stand density, DBH, and culm height were the dominating factors for interannual component changes, and these increased with bamboo age. 2） In the young stand, stand density （N） increased with stand year （y） with a fitted regression equation of: N=17.214y2+309.21y－ 217.4, R2=0.981 1. 3） The allometric equation for mean DBH and stand year （y） fitted with linear regression was DBH=0.015 7y2+0.727 9y+1.598 0, R2=0.756 5 The linear regression for the relationship between culm height （H） and stand year （y） was projected to be H=0.108 5y2+0.429 9y+2.155 3, R2=0.723 2. Therefore, in the young moso bamboo stand, stand density, DBH, and culm height all had a positive relationship with age. ［Ch, 4 fig. 8 tab. 20 ref.］
-
Key words:
- forest mensuration /
- new moso bamboo forest /
- carbon sequestration forest /
- stand density /
- DBH /
- culm height /
- allometric model
-
-
链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.02.003
点击查看大图
计量
- 文章访问数: 2352
- HTML全文浏览量: 312
- PDF下载量: 533
- 被引次数: 0
下载:
