Tree-ring widths are good proxies of annual variation in forest productivity in temperate forests

Abstract Tree rings have long been used to calibrate the net primary production (NPP) time-series predicted by process-based models, based on an implicit assumption that ring-width indices (RWI) can well reflect temporal NPP change. However, this assumption has seldom been tested systematically. In...

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Autores principales:	Kai Xu, Xiangping Wang, Penghong Liang, Hailong An, Han Sun, Wei Han, Qiaoyan Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e792fc5f5e7148078d9fc7c4e827f9f7
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spelling	oai:doaj.org-article:e792fc5f5e7148078d9fc7c4e827f9f72021-12-02T12:31:51ZTree-ring widths are good proxies of annual variation in forest productivity in temperate forests10.1038/s41598-017-02022-62045-2322https://doaj.org/article/e792fc5f5e7148078d9fc7c4e827f9f72017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02022-6https://doaj.org/toc/2045-2322Abstract Tree rings have long been used to calibrate the net primary production (NPP) time-series predicted by process-based models, based on an implicit assumption that ring-width indices (RWI) can well reflect temporal NPP change. However, this assumption has seldom been tested systematically. In this study, 36 plots were set in three forest types from four sites along a latitudinal gradient in northeast China. For each plot, we constructed chronologies and stand NPP of the past 20 years to examine: is RWI a good proxy of inter-annual variation of forest NPP for different forest types under different climate? If it is, why? Our results indicate that RWI was closely related to stand NPP in most cases, and could be used as a good proxy of NPP in temperate forests. Standard and arstan chronologies were better related to NPP series than residual chronology. Stand NPP time-series were mainly determined by large trees, and the correlation between RWI and NPP was also higher for larger trees. We suggest that large trees and dominant species of canopy layer should be sampled for chronology construction. Large trees are major contributors of forest biomass and productivity, and should have priority in forest conservation in a rapid-warming world.Kai XuXiangping WangPenghong LiangHailong AnHan SunWei HanQiaoyan LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kai Xu Xiangping Wang Penghong Liang Hailong An Han Sun Wei Han Qiaoyan Li Tree-ring widths are good proxies of annual variation in forest productivity in temperate forests
description	Abstract Tree rings have long been used to calibrate the net primary production (NPP) time-series predicted by process-based models, based on an implicit assumption that ring-width indices (RWI) can well reflect temporal NPP change. However, this assumption has seldom been tested systematically. In this study, 36 plots were set in three forest types from four sites along a latitudinal gradient in northeast China. For each plot, we constructed chronologies and stand NPP of the past 20 years to examine: is RWI a good proxy of inter-annual variation of forest NPP for different forest types under different climate? If it is, why? Our results indicate that RWI was closely related to stand NPP in most cases, and could be used as a good proxy of NPP in temperate forests. Standard and arstan chronologies were better related to NPP series than residual chronology. Stand NPP time-series were mainly determined by large trees, and the correlation between RWI and NPP was also higher for larger trees. We suggest that large trees and dominant species of canopy layer should be sampled for chronology construction. Large trees are major contributors of forest biomass and productivity, and should have priority in forest conservation in a rapid-warming world.
format	article
author	Kai Xu Xiangping Wang Penghong Liang Hailong An Han Sun Wei Han Qiaoyan Li
author_facet	Kai Xu Xiangping Wang Penghong Liang Hailong An Han Sun Wei Han Qiaoyan Li
author_sort	Kai Xu
title	Tree-ring widths are good proxies of annual variation in forest productivity in temperate forests
title_short	Tree-ring widths are good proxies of annual variation in forest productivity in temperate forests
title_full	Tree-ring widths are good proxies of annual variation in forest productivity in temperate forests
title_fullStr	Tree-ring widths are good proxies of annual variation in forest productivity in temperate forests
title_full_unstemmed	Tree-ring widths are good proxies of annual variation in forest productivity in temperate forests
title_sort	tree-ring widths are good proxies of annual variation in forest productivity in temperate forests
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e792fc5f5e7148078d9fc7c4e827f9f7
work_keys_str_mv	AT kaixu treeringwidthsaregoodproxiesofannualvariationinforestproductivityintemperateforests AT xiangpingwang treeringwidthsaregoodproxiesofannualvariationinforestproductivityintemperateforests AT penghongliang treeringwidthsaregoodproxiesofannualvariationinforestproductivityintemperateforests AT hailongan treeringwidthsaregoodproxiesofannualvariationinforestproductivityintemperateforests AT hansun treeringwidthsaregoodproxiesofannualvariationinforestproductivityintemperateforests AT weihan treeringwidthsaregoodproxiesofannualvariationinforestproductivityintemperateforests AT qiaoyanli treeringwidthsaregoodproxiesofannualvariationinforestproductivityintemperateforests
_version_	1718394250381492224

Tree-ring widths are good proxies of annual variation in forest productivity in temperate forests

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