蒙古栎材积生长的变异性研究

目的]研究蒙古栎材积生长的变异性。方法]对7株蒙古栎材积生长的株内和株间变异性进行分析,拟合经验生长方程和理论生长方程。结果]蒙古栎材积生长株间变异在幼龄期不明显,随时间增加而增大,生长速率稳定后,差异性存在且稳定增加。蒙古栎材积生长在株内的变异性较小,幼龄期至生长期生长速率加快,变异性有所增加,生长稳定后,差异性存在且稳定。结论]蒙古栎在生长过程中材积变化受外界因素的干扰较小,可较准确预测未来几年的材积生长状况。

Study on Variability of Volume Growth of Quercus mongolica

Objective]To study the variability of volume growth in Quercus mongolica.Method]The intra-and inter plant variability of the volume growth of 7 Quercus mongolica trees was analyzed, and the empirical growth equation and the theoretical growth equation were fitted.Result]The variation of tree volume growth in Quercus mongolica was not obvious in young period, and increased with time.After the growth rate was stable, the difference existed and increased steadily.The variation of Quercus mongolica volume growth within the plant was small, and the growth rate increased from the young to the growth stage, and the variability was increased.After the growth was stable, the difference existed and stabilized.Conclusion]The growth of Quercus mongolica is less disturbed by external factors during its growth, so it can predict the volume growth of trees in the next few years.