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首页> 外文期刊>IAWA Journal >Cambial phenology in Abies pindrow (Pinaceae) along an altitudinal gradient in northwestern Himalaya
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Cambial phenology in Abies pindrow (Pinaceae) along an altitudinal gradient in northwestern Himalaya

机译：在喜马拉雅西北部的一直梯度沿着海滩Pindrow（Pinaceae）的Cambial候选

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Climate change is expected to be heterogeneous across the world, with high impacts on the Himalayan ecosystems. There is a need to precisely document cambial phonology and wood formation in these regions to better understand climate-growth relationships and how trees face a warming climate. This study describes the dynamics of cambial phonology in pindrow fir (Abies pinthrnv) along its altitudinal gradient in the Himalaya. The stages of xylem phonology, and the duration and rate of wood formation were assessed from anatomical observations during the growing season from samples collected weekly from three sites at various altitudes (2392-2965 m a.s.l.) over two years. There were significant differences in the duration and rate of cell formation along the altitudinal gradient, which decreased at increasing altitudes. The growing season duration decreased by 5.2 and 3.7 days every 100 m of increase in altitude in 2014 and 2015, respectively, while the rate of cell formation decreased from 0.38 and 0.44 cells /day to 0.29 and 0.34 cells/day in 2014 and 2015, respectively. Cell production decreased from 63.3 and 67.0 cells to 38.3 and 45.2 cells with a decrease of 4.3 and 3.8 cells per 100 m increase in altitude in 2014 and 2015, respectively. The higher precipitation in 2015 increased the growth rate and resulted in a higher xylem production. Our findings give new insights into the dynamics of cambial phonology and help in better understanding of the potential impacts of climate change on tree growth and forest productivity of Himalayan forests.
机译：气候变化预计将在全球范围内是异质的，对喜马拉雅生态系统的影响很高。需要精确地记录这些地区的喇叭音韵和木材形成，以更好地了解气候增长关系以及树木如何面对温暖的气候。本研究描述了沿着喜马拉雅山脉沿着它的PINDROF FIR（Abies Pinthrnv）的喇叭音韵的动态。从两年内从三个位点收集的样品（2392-2965 M A.L.）中，在种植季节中，评估了木质语音学的阶段和木材形成的持续时间和木材形成率和木材形成的持续时间和速率。沿着高度梯度的细胞形成持续时间和速率存在显着差异，从而在增加海拔地区下降。日益增长的季节持续时间分别下降了5.2和3.7天，分别在2014年和2015年每100米增加了100米，而细胞形成率从0.38和0.44个细胞/日减少到2014年和2015年的0.29和0.34个细胞/天。分别。细胞产量从63.3和67.0细胞减少到38.3和45.2细胞，减少4.3和3.8细胞每100米的高度，2014年和2015年的高度增加。 2015年的较高降水量增加了增长率并导致了更高的木糖生产。我们的调查结果为爪语音学的动态提供了新的见解，并有助于更好地了解气候变化对喜马拉雅森林树的生长和森林生产力的潜在影响。

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