Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica

Xylem anatomy can provide valuable information about tree allometry and ecophysiological performance. It has unique advantages in the study of global climate change and forest adaptation compared to traditional ring-width or density proxy parameters. Developing appropriate detrended sequences of xyl...

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Autores principales:	Liuting Chen, Liangjun Zhu, Shuguang Liu, Pifeng Lei, Danyang Yuan, Zongshan Li, Xiaochun Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Detrending methods Xylem anatomy Earlywood vessels Tree rings Fraxinus mandshurica Northeast China Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/4709ed73853e4852a785fb9b17f769b3
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spelling	oai:doaj.org-article:4709ed73853e4852a785fb9b17f769b32021-12-01T04:58:23ZXylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica1470-160X10.1016/j.ecolind.2021.108041https://doaj.org/article/4709ed73853e4852a785fb9b17f769b32021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21007068https://doaj.org/toc/1470-160XXylem anatomy can provide valuable information about tree allometry and ecophysiological performance. It has unique advantages in the study of global climate change and forest adaptation compared to traditional ring-width or density proxy parameters. Developing appropriate detrended sequences of xylem features is necessary to carry out a series of further studies. However, the differences between detrending methods and their effects for xylem features are still unclear, presenting a challenge to the choice of proper detrending methods. In this study, we used the earlywood vessel features of Fraxinus mandshurica as an example and compared the differences in four common detrending methods (Spline, CSS: cubic smoothing spline, NEP: negative exponential curve, and RCS: regional curve standardization) to highlight the importance of the detrending methods in dendroanatomical studies. The results show that detrending methods significantly affect the long-term growth trends and climate signals recorded in xylem anatomical features. Among them, NEP has good performance in terms of ring width and vessel number, which is not suitable for other vessel features because of its deterministic nature. Spline and CSS are relatively conservative methods, in which are not easy to make mistakes, but the problem of overfitting (lack of climate signals) deserves attention. Multiple RCS may be a promising detrending method with quantitative wood anatomy technology development if sufficient samples are available. Our results highlight the importance of selecting detrending methods for xylem feature identification and emphasize the importance of testing various detrending methods rather than arbitrarily choosing a standard method. The detrending method should be selected based on the purpose, such as the balance between climate signals and thorough detrended effects. We recommend applying multiple methods to test the growth trends in xylem features before selecting a detrending method. More interdisciplinary studies involving ecophysiology, wood anatomy, and dendrochronology will help to distil the valuable information in xylem features accurately.Liuting ChenLiangjun ZhuShuguang LiuPifeng LeiDanyang YuanZongshan LiXiaochun WangElsevierarticleDetrending methodsXylem anatomyEarlywood vesselsTree ringsFraxinus mandshuricaNortheast ChinaEcologyQH540-549.5ENEcological Indicators, Vol 130, Iss , Pp 108041- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Detrending methods Xylem anatomy Earlywood vessels Tree rings Fraxinus mandshurica Northeast China Ecology QH540-549.5
spellingShingle	Detrending methods Xylem anatomy Earlywood vessels Tree rings Fraxinus mandshurica Northeast China Ecology QH540-549.5 Liuting Chen Liangjun Zhu Shuguang Liu Pifeng Lei Danyang Yuan Zongshan Li Xiaochun Wang Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica
description	Xylem anatomy can provide valuable information about tree allometry and ecophysiological performance. It has unique advantages in the study of global climate change and forest adaptation compared to traditional ring-width or density proxy parameters. Developing appropriate detrended sequences of xylem features is necessary to carry out a series of further studies. However, the differences between detrending methods and their effects for xylem features are still unclear, presenting a challenge to the choice of proper detrending methods. In this study, we used the earlywood vessel features of Fraxinus mandshurica as an example and compared the differences in four common detrending methods (Spline, CSS: cubic smoothing spline, NEP: negative exponential curve, and RCS: regional curve standardization) to highlight the importance of the detrending methods in dendroanatomical studies. The results show that detrending methods significantly affect the long-term growth trends and climate signals recorded in xylem anatomical features. Among them, NEP has good performance in terms of ring width and vessel number, which is not suitable for other vessel features because of its deterministic nature. Spline and CSS are relatively conservative methods, in which are not easy to make mistakes, but the problem of overfitting (lack of climate signals) deserves attention. Multiple RCS may be a promising detrending method with quantitative wood anatomy technology development if sufficient samples are available. Our results highlight the importance of selecting detrending methods for xylem feature identification and emphasize the importance of testing various detrending methods rather than arbitrarily choosing a standard method. The detrending method should be selected based on the purpose, such as the balance between climate signals and thorough detrended effects. We recommend applying multiple methods to test the growth trends in xylem features before selecting a detrending method. More interdisciplinary studies involving ecophysiology, wood anatomy, and dendrochronology will help to distil the valuable information in xylem features accurately.
format	article
author	Liuting Chen Liangjun Zhu Shuguang Liu Pifeng Lei Danyang Yuan Zongshan Li Xiaochun Wang
author_facet	Liuting Chen Liangjun Zhu Shuguang Liu Pifeng Lei Danyang Yuan Zongshan Li Xiaochun Wang
author_sort	Liuting Chen
title	Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica
title_short	Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica
title_full	Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica
title_fullStr	Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica
title_full_unstemmed	Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica
title_sort	xylem features detrending methods matter: a case study on earlywood vessels of fraxinus mandshurica
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/4709ed73853e4852a785fb9b17f769b3
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Xylem features detrending methods matter: A case study on earlywood vessels of Fraxinus mandshurica

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