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DOI	10.1016/j.foreco.2020.118653
	Short-term reaction of European beech stem taper due to weather extremes
	Rais A.; Uhl E.; van de Kuilen J.-W.G.; Pretzsch H.
发表日期	2021
ISSN	0378-1127
卷号	480
英文摘要	This study analyses a tree's short-term allocation pattern under varying weather conditions. Based on a sample of 311 stem discs of the stem boles from 92 European beech (Fagus sylvatica L.) trees, the annual stem taper was calculated retrospectively over multiple decades and linked to the annual weather conditions. The bole shape results from long-term local density and stand structure. A general understanding of short-term tree allometry due to weather conditions is even more relevant as future climate developments are assumed to cause drought stress in Central-Europe more frequently. Taper was computed by linear regression analysis and normalized with a medium-stiff spline that considers mid-term impacts of thinning, other disturbances such as insect attacks and age, but neglected short-term impacts of weather conditions. Subtracting the standardized taper by one, the percentage change of taper was confronted with the temperature and precipitation of the vegetation period. Compared to years of normal weather conditions, median taper changed by +0.090% in favorable and −0.080% in unfavorable years. In particular, rainfall influenced significantly annual taper change by +4.15 × 10−4% mm−1, i.e. larger amount of precipitation during the vegetation period accelerated bole taper. Bole taper sums up many past aspects of tree environment like competition situation and growing conditions over time. Even when the annual weather impact on taper demonstrated in this study was small, it relates to tree stability and timber quality, such as fiber deviation in boards. © 2020 Elsevier B.V.
英文关键词	De Martonne index; Fagus sylvatica; Growth allocation; Log taper; Stem discs
语种	英语
scopus关键词	Precipitation (meteorology); Regression analysis; Vegetation; Allocation patterns; European beech (fagus sylvatica l.); Future climate; Growing conditions; Insect attacks; Stand structures; Vegetation periods; Weather extremes; Forestry; allometry; climate conditions; climate effect; deciduous forest; drought stress; extreme event; long-term change; resource allocation; weather; Fagus Sylvatica; Forestry; Plants; Precipitation; Regression Analysis; Trees; Weather; Central Europe; Fagus sylvatica; Hexapoda
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154859
作者单位	TU Munich, Chair of Forest Growth and Yield Science, Hans-Carl-von-Carlowitz-Platz 2, Freising, 85354, Germany; TU Munich, Chair of Wood Technology, Holzforschung München, Winzererstrasse 45, München, 80797, Germany; Bavarian Forest Institute, Hans-Carl-von-Carlowitz-Platz 1, Freising, 85354, Germany; TU Delft, Faculty of Civil Engineering and Geosciences, Biobased Structures and Materials, Delft, Netherlands
推荐引用方式 GB/T 7714	Rais A.,Uhl E.,van de Kuilen J.-W.G.,et al. Short-term reaction of European beech stem taper due to weather extremes[J],2021,480.
APA	Rais A.,Uhl E.,van de Kuilen J.-W.G.,&Pretzsch H..(2021).Short-term reaction of European beech stem taper due to weather extremes.Forest Ecology and Management,480.
MLA	Rais A.,et al."Short-term reaction of European beech stem taper due to weather extremes".Forest Ecology and Management 480(2021).