摘要
探讨广西高峰林场46年生灰木莲人工林生长规律和林分分布规律,为合理保护和培育灰木莲人工林提供参考。以灰木莲解析木为基础,运用软件进行回归分析,建立灰木莲树高、胸径、材积数学模型,用实测值验证方程的精确性,并绘制生长曲线,对其生长规律进行分析;通过计算灰木莲人工林的径阶频率分布来分析林分的径阶分布。结果表明,建立的生长模型拟合效果好、精度高,可用于南宁地区灰木莲人工林生长过程的预测;灰木莲是早期速生、持续生长较长的树种,在0~14 a为其树高生长的速生期,14 a后生长趋慢。0~8 a为胸径生长的速生期,8 a后胸径生长减缓。材积生长到46 a仍未达到最大值,说明其成熟期在46 a后;灰木莲人工林林木株数呈正态分布,说明林分生长正常,稳定性较大。
Growth regularities of growing in Nanning were examined to find the reference for reasonable protecting and nurturing of the plant.Related data were acquired from analytical woods.Regression analysis was carried out by software to establish growth models of tree height,diameter and volume.Accuracy of the models were checked by actual measurement.Growth curves were drawn to analyze the growth regularities.The result showed that the growth models had high precision,which could be used to predict the growth regularities of Manglietia glauce in Nanning region.M.glauce grew quickly in its early stage,0-14 years were its fast growing period for tree height,and 0-8 years were its fast growing period for DBH.The mean growth of volume didn＇t meet the maximum value at the age of 46 years,indicating that its mature stage was after 46 years.The stand structure of M.glauce exhibited normal distribution,demonstrating its normal growth and high stability.
出处
《西北林学院学报》
CSCD
北大核心
2011年第5期174-178,共5页
Journal of Northwest Forestry University
基金
高峰林场珍贵及乡土树种研究项目
