Variation in fine root traits with thinning intensity in a Chinese fir plantation insights from branching order and functional groups

Abstract Thinning is a widely used practice in forest management, but the acclimation mechanisms of fine roots to forest thinning are still unclear. We examined the variations in fine root traits of different branching orders and functional groups along a thinning intensity gradient in a 26-year-old...

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Autores principales:	Zuhua Wang, Min Liu, Fen Chen, Haibo Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b5408eccd8af4110a50340ac86fa3739
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spelling	oai:doaj.org-article:b5408eccd8af4110a50340ac86fa37392021-11-28T12:18:14ZVariation in fine root traits with thinning intensity in a Chinese fir plantation insights from branching order and functional groups10.1038/s41598-021-02206-12045-2322https://doaj.org/article/b5408eccd8af4110a50340ac86fa37392021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02206-1https://doaj.org/toc/2045-2322Abstract Thinning is a widely used practice in forest management, but the acclimation mechanisms of fine roots to forest thinning are still unclear. We examined the variations in fine root traits of different branching orders and functional groups along a thinning intensity gradient in a 26-year-old Chinese fir (Cunninghamia lanceolata) plantation. With increasing thinning intensity, the root C concentration (RCC), root N concentration (RNC), specific root area (SRA), and specific root length (SRL) of the absorptive roots (the first two orders) significantly decreased, while root abundance (root biomass and root length density) and root tissue density (RTD) significantly increased. Fifty-four percent of the variation in the absorptive root traits could be explained by the soil N concentration and the biomass and diversity of the understorey vegetation. Conversely, transport root (third- and higher-order) traits did not vary significantly among different thinning intensities. The covariation of absorptive root traits across thinning intensities regarding two dimensions was as follows: the first dimension (46% of the total variation) represented changes in root abundance and chemical traits (related to RCC, RNC), belonging to an extensive foraging strategy; the second dimension (41% of the total variation) represented variations in root morphological traits (related to RTD, SRL and SRA), which is an intensive foraging strategy (i.e., root economic spectrum). These results suggested that the absorptive roots of Chinese fir adopt two-dimensional strategies to acclimate to the altered surroundings after thinning.Zuhua WangMin LiuFen ChenHaibo LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zuhua Wang Min Liu Fen Chen Haibo Li Variation in fine root traits with thinning intensity in a Chinese fir plantation insights from branching order and functional groups
description	Abstract Thinning is a widely used practice in forest management, but the acclimation mechanisms of fine roots to forest thinning are still unclear. We examined the variations in fine root traits of different branching orders and functional groups along a thinning intensity gradient in a 26-year-old Chinese fir (Cunninghamia lanceolata) plantation. With increasing thinning intensity, the root C concentration (RCC), root N concentration (RNC), specific root area (SRA), and specific root length (SRL) of the absorptive roots (the first two orders) significantly decreased, while root abundance (root biomass and root length density) and root tissue density (RTD) significantly increased. Fifty-four percent of the variation in the absorptive root traits could be explained by the soil N concentration and the biomass and diversity of the understorey vegetation. Conversely, transport root (third- and higher-order) traits did not vary significantly among different thinning intensities. The covariation of absorptive root traits across thinning intensities regarding two dimensions was as follows: the first dimension (46% of the total variation) represented changes in root abundance and chemical traits (related to RCC, RNC), belonging to an extensive foraging strategy; the second dimension (41% of the total variation) represented variations in root morphological traits (related to RTD, SRL and SRA), which is an intensive foraging strategy (i.e., root economic spectrum). These results suggested that the absorptive roots of Chinese fir adopt two-dimensional strategies to acclimate to the altered surroundings after thinning.
format	article
author	Zuhua Wang Min Liu Fen Chen Haibo Li
author_facet	Zuhua Wang Min Liu Fen Chen Haibo Li
author_sort	Zuhua Wang
title	Variation in fine root traits with thinning intensity in a Chinese fir plantation insights from branching order and functional groups
title_short	Variation in fine root traits with thinning intensity in a Chinese fir plantation insights from branching order and functional groups
title_full	Variation in fine root traits with thinning intensity in a Chinese fir plantation insights from branching order and functional groups
title_fullStr	Variation in fine root traits with thinning intensity in a Chinese fir plantation insights from branching order and functional groups
title_full_unstemmed	Variation in fine root traits with thinning intensity in a Chinese fir plantation insights from branching order and functional groups
title_sort	variation in fine root traits with thinning intensity in a chinese fir plantation insights from branching order and functional groups
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b5408eccd8af4110a50340ac86fa3739
work_keys_str_mv	AT zuhuawang variationinfineroottraitswiththinningintensityinachinesefirplantationinsightsfrombranchingorderandfunctionalgroups AT minliu variationinfineroottraitswiththinningintensityinachinesefirplantationinsightsfrombranchingorderandfunctionalgroups AT fenchen variationinfineroottraitswiththinningintensityinachinesefirplantationinsightsfrombranchingorderandfunctionalgroups AT haiboli variationinfineroottraitswiththinningintensityinachinesefirplantationinsightsfrombranchingorderandfunctionalgroups
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Variation in fine root traits with thinning intensity in a Chinese fir plantation insights from branching order and functional groups

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