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对长白落叶松林木生长过程进行了分析,研究表明:人工长白落叶松胸径的连年生长量的峰值出现在16~19a,平均生长量的峰值出现在8~10a,二者在16~18a时相交;树高的连年生长量在14~17a时达到生长高峰,在18~20a时与平均生长量相交;落叶松材积的连年生长量在25~30a时出现其最大值,之后逐年下降,预计与平均生长量在28~33a时相交,可以在18a左右考虑对人工长白落叶松林进行抚育间伐,结合当地的经营目标考虑在28~33a左右进行主伐。同时,研究结果显示:随着径阶的增大,林木胸径、树高和材积的生长规律都基本趋于正常稳定。胸径最优生长方程为:y=1.254 6e0.124 7x;树高最优生长方程:y=1.418 7e0.119 3x;材积最优生长方程:y=0.000 09e0.364 4x。
The growth process of Larix olgensis was analyzed. The results showed that the peak value of annual growth of Larix olgensis appeared from 16 to 19 years, and the peak value of average growth appeared from 8 to 10 years. Both of them peaked at 16-18 years ; The annual growth rate of tree height reached the peak of growth at 14-17a, and it intersected with the average growth rate at 18-20a. The annual growth rate of Larix volume reached its maximum value at 25-30a and then decreased year by year, The average growth rate at 28 ~ 33a intersection, about 18a can be considered artificial deforestation thinning, consider the local business objectives in about 28 ~ 33a for cutting. At the same time, the results showed that with the diameter increasing, the DBH, tree height and volume growth of the trees tended to be normal and stable. The optimum growth equation of DBH was: y = 1.254 6e0.124 7x; tree height optimum growth equation: y = 1.418 7e0.119 3x; volume optimum growth equation: y = 0.0009e0.364 4x.