辽宁冰砬山地区蒙古栎生长过程研究

在辽宁冰砬山地区不同立地条件的蒙古栎林分中设置5块样地进行各项因子调查,在每个样地内伐取1株蒙古栎平均木进行树干解析,解析木年龄为50～63 a,树干解析数据表明:胸径连年生长量高峰值出现在15 a,平均生长量高峰值出现在20 a;树高连年生长量高峰值出现在15 a,平均生长量高峰值出现在15～20 a;材积连年生长量和平均生长量在35 a前增长较快,45 a后有所减缓,从生长量变化趋势来看,数量成熟龄应在60 a左右。选用5个生长模型对胸径、树高、材积的总生长过程进行了拟合,结果表明Richards曲线拟合效果最好,可以用其作为胸径、树高、材积的生长预估模型。

Studies on the growth process of Quercus mongolica in Binglashan Mountain areas in Liaoning

5 sample plots were established in Quercus mongoliea forests under different site conditions to investigate related factors in Binglashan Mountain areas in Liaoning, and one average free in each plot was cut for stem analysis and the ages of analytic trees were from 50 to 63 years. Stem analysis data showed that the peak value for DBH current annual increment （CAI） and average increment （AI） was at 15 and 20 years respectively. The peak value for height CAI andAI was at 15 and from 15 to 20 years respectively. The volume CAI and AI increased faster before 45 years and increased slower alter 45 years. The quantitative maturity should be around 60 years in line with growth variation lrends. 5 growth models were chosen to fit the general growth process of DBH, height and volume, the results showed the Richards curve fitted the best, which could be used as growth forecasting model for DBH, height and volume.