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首页> 外文期刊>Lesnicky casopis >Growth variability of European beech (Fagus sylvatica L.) natural forests: Dendroclimatic study from Krkono??e National Park
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Growth variability of European beech (Fagus sylvatica L.) natural forests: Dendroclimatic study from Krkono??e National Park

机译：欧洲山毛榉（Fagus Sylvatica L.）天然森林的成长变异性：来自Krkono的Dendroclimatic研究E国家公园

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Long-term temporal development of beech stands in relation to climatic conditions is well documented by dendrochronological analyses. The study aims to identify and describe growth factors affecting natural European beech stands (Fagus sylvatica L.) on permanent research plots in the eastern Krkono??e Mountains, the Czech Republic. The paper focus on radial growth dynamics, frequency and cyclicity, and the effect of climatic factors on diameter increment of beech stands since 1850. The growth development of beech stands was significantly affected by air pollution load in 1977a??1989, and increasingly frequent climate extremes in recent years (since 2010). Periodic increment events recurred in approximately 10a??18 yearsa?? periods. Stands on research plots responded differently to climatic factors, the main limiting factor being low temperatures during the growing season, frost damages and extreme droughts. The positive influence of temperatures on beech increments was recorded in winter, early spring, and especially in July and August of the current year. Conversely, precipitation in the previous year had higher impact on radial increment, with prevailing negative correlation. The plots were negatively affected by the decrease in sum of precipitation in February and March, but it was the temperature that influenced the beech increment most significantly. Dendrochronological analysis of close-to-nature beech stands provides valuable information on radial forest growth in response to changing climatic conditions.
机译：山毛榉的长期时间开发与气候条件相关的是通过树突论分析良好的记录。该研究旨在识别和描述影响自然欧洲山毛榉的生长因素（Fagus Sylvatica L.）在捷克共和国东部的永久性研究地块上。本文重点关注径向生长动力学，频率和循环，自1850年以来山毛榉山坡直径增量的影响。1977年的空气污染负荷山脉的增长显着影响了1989年，越来越频繁的气候近年来极端（自2010年以来）。定期增量事件在大约10A的情况下重复18岁？期间。在研究情节上响应不同的气候因素，主要限制因素在生长季节期间的低温，霜冻损伤和极端干旱。冬季，早春，特别是在本年度的冬季，尤其是7月和8月的冬季，温度对山毛榉体增量的积极影响。相反，前一年的降水对径向增量的影响较高，具有普遍的负相关。这些地块对2月和3月的降水量减少的减少受到负面影响，但它是最大程度地影响了山毛榉增量的温度。近乎自然山毛榉木的树状结构分析提供了有关径向森林增长的有价值的信息，以应对变化的气候条件。

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