侯琳, 唐德瑞, 王谊, 李骁. 美国黄松个体高生长过程研究[J]. 西南林业大学学报, 2003, 23(1): 10-12,20. DOI: 10.11929/j.issn.2095-1914.2003.01.003
引用本文: 侯琳, 唐德瑞, 王谊, 李骁. 美国黄松个体高生长过程研究[J]. 西南林业大学学报, 2003, 23(1): 10-12,20. DOI: 10.11929/j.issn.2095-1914.2003.01.003
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HOU Lin, TANG De-rui, WANG Yi, LI Xiao. A Study on Height Growth Process of Pinus ponderosa[J]. Journal of Southwest Forestry University, 2003, 23(1): 10-12,20. DOI: 10.11929/j.issn.2095-1914.2003.01.003
Citation: HOU Lin, TANG De-rui, WANG Yi, LI Xiao. A Study on Height Growth Process of Pinus ponderosa[J]. Journal of Southwest Forestry University, 2003, 23(1): 10-12,20. DOI: 10.11929/j.issn.2095-1914.2003.01.003
shu

美国黄松个体高生长过程研究

A Study on Height Growth Process of Pinus ponderosa

    摘要
  • 摘要: 运用SAS软件,建立美国黄松树高生长量与树龄的间的回归方程.生长模型分析表明:14龄前美国黄松高生长缓慢;14~18龄,高生长最快;18龄后高生长速率变慢.据此,可将美国黄松的生长过程划分为"慢-快-慢"3个生长阶段。在此3阶段中,树高平均生长速度分别为0.31m/a,0.75m/a和0.56m/a。对应于不同的生长阶段,应采取相应的经营措施。

     

    Abstract: Regression function of height-age of Pinus ponderosa was established by SAS software.Height growth model analysis indicates that before 14,between 14 to 18 and after 18,velocity of height growth of Pinus ponderosa has been lowest,fastest and decreasing,respectively.Based on the above,process of growth of Pinus ponderosa has been divided into three stages as "slow-fast-slow".In the three stages,the average velocity of height growth of Pinus ponderosa is 0.31 m/a,0.75 m/a and 0.56 m/a,respectively.Connected with different stages,measures of management have been proposed.

     

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