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Climate responses of ring widths and radial growth phenology of Betula ermanii , Fagus crenata and Quercus crispula in a cool temperate forest in central Japan
Trees ( IF 2.3 ) Pub Date : 2020-01-09 , DOI: 10.1007/s00468-019-01948-w
Yudong Shen , Eitaro Fukatsu , Hiroyuki Muraoka , Taku M. Saitoh , Yu Hirano , Koh Yasue

Key message

Climate responses of radial growth of major hardwood species growing in a cool temperate forest in Japan were clarified by dendrochronological analysis combining the phenology observation of radial growth.

Abstract

To better understand which climate factors limit the radial growth of major hardwood species growing in a cool temperate forest in Japan, we clarified the phenology of radial growth and developed ring width residual chronologies for Betula ermanii, Fagus crenata and Quercus crispula at Takayama, an LTER research site located in central Japan. We inspected stem tissue for division of cambial cells in the early stage of wood formation and examined the cumulative radial growth by the wounding method. The onset of cambial cell division in Q. crispula was observed to be about 2 weeks earlier than in the other species. Wood formation in the final part of the tree ring occurred approximately 1 month earlier in B. ermanii than in the other species. The correlation analysis was performed between chronologies and moving averages of 31-day climate data with a 1-day lag. The periods which revealed significant correlations with climate factors were categorized into the previous growing season, previous autumn, just before the current growing season and current growing season according to their characteristic responses and the phenology of wood formation and leaves. The negative correlations between ring width of all the species and mean and minimum temperatures of previous year’s autumn, when the growth ending of ring width and leaf coloring occurred, suggested that temperature may have affected the respiration rate and/or prolonged the start of leaf fall, resulting in variations of radial growth through the consumption of photosynthetic products. On the other hand, different responses to climate were observed among species during the other phenological periods.


中文翻译:

日本中部凉温带森林中桦,桦和栎的圆环宽度和径向生长物候的气候响应。

关键信息

通过树轮年代学分析结合径向生长的物候观测,阐明了日本凉爽温带森林中主要硬木树种径向生长的气候响应。

抽象

为了更好地了解哪些气候因素限制主要阔叶树种的寒温带森林在日本长大的径向生长,我们澄清径向生长和发达的环宽度残留年表的物候岳桦水青冈籽栎crispula在高山,在长期生态研究研究中心位于日本中部。我们在木材形成的早期阶段检查了干细胞中的冈比亚细胞分裂情况,并通过伤口处理方法检查了累积的放射状生长。观察到在Q.crisula中,冈比亚细胞分裂的发生比其他物种早了约2周。在树的最后部分,木材的形成发生在大约1个月之前比其他物种 在时间序列和31天气候数据的移动平均值之间进行了1天滞后的相关性分析。根据气候特征的响应以及木材形成和叶片的物候特征,将与气候因素显着相关的时期分为上一个生长季节,上一个秋季,正好在当前生长季节和当前生长季节之前。当所有物种的环宽度与上一年秋季的平均温度和最低温度之间存在负相关关系时,当环宽度的增长结束和叶片着色发生时,表明温度可能影响了呼吸速率和/或延长了叶片落下的开始时间,通过光合产物的消耗导致径向生长的变化。另一方面,
更新日期:2020-01-09
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