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应用30年生格木人工林树干解析资料,对珍稀濒危树种格木人工林的生长规律进行研究,结果表明:(1)林分中等木胸径生长量的速生期在7~25年,连年生长量最高峰值在第15年,连年生长量与平均生长量曲线在20~26年相交;林分优势木径向生长的速生期在5~28年,连年生长量的最高峰值在第11年,平均生长量的峰值在18~19年。(2)林分中等木树高生长的速生期在第4~21年,连年生长量的最高峰值在第7年,平均生长量的峰值在第8年,平均生长量与连年生长量曲线在8~21年多次相交;林分优势木树高生长的速生期在4~20年,连年生长量的最高峰值在第4年,平均生长量的峰值在第9年,平均生长量与连年生长量在9~16年多次相交。(3)中等木与优势木的材积速生期持续时间长,生长潜力大,直至第30年时仍未达数量成熟。(4)心材形成的起始树龄和起始树干去皮直径分别为12.2年、7.73 cm。(5)林分中等木胸径、树高和材积的最优拟合方程分别为Gompertz、Richards、Richards方程,其调整后的拟合优度均≥0.978 691,拟合效果显著;林分优势木胸径、树高、材积的最优拟合模型分别为Schumacher、Richards、Richards方程。(6)利用Adobe Acrobat软件距离工具进行树干解析测定,具有测量结果精准、效率高、成本低及复测易于实现等优点,相对于传统手工测量方式是一种较好的新途径。
The results showed that: (1) The rapid growth period of DBH growth in stands was between 7 and 25 years, with annual growth rate The highest peak in the 15th year, annual growth and average growth curve in 20 to 26 years intersect; dominant tree radial growth of fast growing period of 5 to 28 years, annual growth peak in the first 11 years, the average The peak growth in 18 to 19 years. (2) Fast growing stage of medium woody tree height in stands In the 4th ~ 21st year, the highest peak value of annual growth was in the 7th year, and the peak value of average growth was in the 8th year. The average growth and the annual growth curve were in the 8 to 21 years, many times intersect; tree superiority Wood tree height growth in the 4 to 20 years, the annual peak growth in the fourth year, the average peak growth in the ninth year, the average annual growth and successive years Growth in the 9-16 years many times intersect. (3) The rapid growth of wood volume of medium and superior woods lasted for a long time, with great potential for growth until the 30th year. (4) The starting age of the heartwood and the diameter of the starting trunk peeled were 12.2 years and 7.73 cm, respectively. (5) The optimal fitting equations of medium DBH, tree height and volume were Gompertz, Richards and Richards equations respectively, the adjusted goodness of fit was ≥0.978 691, and the fitting effect was significant. The optimal fitting models of DBH, tree height and volume were Schumacher, Richards and Richards equations, respectively. (6) The use of Adobe Acrobat software tools for trunk analysis, with the measurement accuracy, high efficiency, low cost and easy to implement retest and so on, compared to the traditional manual measurement is a better new way.