Cellular phenology of annual ring formation of Abies balsamea in the Quebec boreal forest (Canada)
Cellular phenology of annual ring formation of Abies balsamea in the Quebec boreal forest (Canada)
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DOI：
10.1139/x02-178
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发表时间：
2003-02-01
影响因子：
2.2
通讯作者：
Begin, Y
中科院分区：
文献类型：
--
作者：
Deslauriers, A;Morin, H;Begin, Y
研究了北方森林中香脂冷杉（Abies balsamea (L.) Mill）生长年轮的细胞形成，以描述年轮形成的时间以及早材和晚材的发育模式。提取1998年至2000年生长季的木材微核，用甲酚固紫对微核进行染色，以便于计数径向膨大期、壁增厚期和成熟细胞期的细胞数。然后估计完成这些不同阶段所需的时间。观察到生长季节开始（5月7日至6月7日）、早材-晚材过渡（7月2日至7月19日）和生长季节结束（8月20日至9月20日）的变化。观察到早材的细胞增大持续时间短，不到一周，晚材为 5-10 天。细胞壁增厚所需时间，早材约20天，晚材长于10-15天。在年轮形成模式和细胞发育速率中观察到一定的灵活性，这在最佳生长条件每年都在变化的北方森林中提供了优势。这些关于年轮发育的空间和时间模式的发现可能有助于理解树木与气候或其他环境参数的关系。
Cell formation in growth rings of balsam fir (Abies balsamea (L.) Mill) in the boreal forest was studied to describe the timing of ring formation and the development patterns of earlywood and latewood. Wood micro-cores were extracted during the growing season from 1998 to 2000. The micro-cores were stained with cresyl fast violet to facilitate counting the number of cells in the radial enlargement, wall thickening phases, and mature cell phases. The periods required to complete these various phases were then estimated. Variations in the beginning of the growing season (May 7 - June 7), the earlywood-latewood transition (July 2 - July 19), and the end of the growing season (August 20 - September 20) were observed. Short cell enlargement durations of less than a week for earlywood and 5-10 days for latewood were observed. Time required for cell wall thickening was about 20 days for earlywood and longer than 10-15 days for latewood. A certain flexibility was observed in the ring formation patterns and in the cell development rate, providing an advantage in the boreal forest where optimal growth conditions change from year to year. These findings on the spatial and temporal patterns of ring development may be useful for understanding tree relationships with climate or other environmental parameters.