色木槭、拧劲槭生长分析及生长阶段划分初探

Growth analysis and division of growth phase of Acer mono and Acer triflorum

以色木槭、拧劲槭天然林解析木为对象,用Logistic模型对树高、胸径、材积生长进行拟合,研究其生长规律。结果表明：树高、材积生长拟合效果良好。色木槭树高生长9 a前为生长前期,9～31 a为速生期,20 a为生长高峰年,31 a后为生长后期;材积生长25 a前为生长前期,25～38 a为速生期,32 a为生长高峰年,38 a后为生长后期。拧劲槭树高生长9 a前为生长前期,9～40 a为速生期,12 a为生长高峰年,40 a后为生长后期;材积生长28 a前为生长前期,28～43 a为速生期,36 a为生长高峰年,43 a后为生长后期。色木槭、拧劲槭树高、胸径生长在15 a前比较接近,15 a后色木槭明显高于拧劲槭;色木槭、拧劲槭材积生长在18 a前比较接近,18 a后色木槭明显高于拧劲槭。

The Logistic models of tree height, breast - height diameter and volume growth were researched to do growth analyses of Acer mono and Aeer triflorum. The results showed the regressions of height and volume growth were better than those of breast - height. The early, rapid - growth, and later growth stages of height growth of Acer mono were in the first 9 a,9 - 31 a, and after the 31 a, respectively, while the peak height growth appeared in 20a. The early, rapid - growth, and later growth stages of volume growth of Acer mono were in the first 25a, 25 ～ 38a, and after 38a, respectively, while the peak volume growth appeared in the 32a. To Acer triflorum, the early, rapid- growth, and later growth stages of height growth were in the first 9 a, 9 ～ 40 a, and after 40a, respectively, while the peak height growth appeared in 12a. The early, rapid - growth, and later growth stages of volume growth were in the first 28 a, 28 ～ 43 a, and after 43 a, respectively, while the peak volume growth appeared in 36a. The tree height and breast - height diameter of Acer mono were similar to those of Acer triflorura before 15 - year growth, but significantly higher after 15- year growth. The volume growth of Acer morro was similar to those of Aeer triflorum before 18 - year growth, but significantly higher after 18- year growth.