王朗自然保护区岷江冷杉(Abies faxoniana)树干解析研究

采集王朗自然保护区内一株树龄为293a生岷江冷杉,按照树干解析的步骤,截取圆盘获得数据,研究结果表明:在整个生长期内,岷江冷杉的总生长量始终保持较快的增长,平均生长量较平稳,但是连年生长量表现出参差不齐的状况;胸径连年生长量几乎全部高于树高连年生长量,说明岷江冷杉的胸径的生长快于树高的生长,生长过程中以树干的增粗为主;材积生长量还未出现峰值,平均生长量和连年生长量还没有相交,还未达到数量成熟龄。说明岷江冷杉生长状况良好,其环境适合其生长。

Stem Analysis of Abies faxoniana from Wanglang Nature Reserve

A 293-year old Abies faxoniana from Wanglang National Nature Reserve,Sichuan Province China was collected to carry out stem analysis according to the standard procedure.Discs were cut correctly and the rings of each disc were identified and counted.It was found that in the whole growth period,the total growth increment always maintained rapid growth,average increment was quite stable,but the current annual increment was uneven.Almost all the current annual increment of DBH was higher than that of the tree height indicating that the A.faxoniana thickening growth was faster than its height growth.The volume growth did not reach the maximum.The curve of average increment and the curve of current annual increment did not intersect,which showed the A.faxoniana did not reach the quantity maturity.This study indicated that A.faxoniana grew in good condition and the environment was appropriate for its growth.