Variation in biomass and nutrients allocation of Corydalis hendersonii on the Tibetan Plateau with increasing rainfall continentality and altitude

The Tibetan Plateau is considered as one of most sensitive region to global change. Nutrient (N and P) availability is an important limiting ecological factor in cold terrestrial ecosystems such as the alpine belt of the Tibetan Plateau. We focused on Corydallis hendersonii, an endemic alpine specie...

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Autores principales:	Qien Li, Richard Michalet, Xiao Guo, Huichun Xie, Mingzhu He
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Biomass Nutrients N:P Tibetan Plateaus Corydallis hendersonii Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/b2fab68febf14f908e171e4251ac378e
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spelling	oai:doaj.org-article:b2fab68febf14f908e171e4251ac378e2021-12-01T05:01:12ZVariation in biomass and nutrients allocation of Corydalis hendersonii on the Tibetan Plateau with increasing rainfall continentality and altitude1470-160X10.1016/j.ecolind.2021.108244https://doaj.org/article/b2fab68febf14f908e171e4251ac378e2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21009092https://doaj.org/toc/1470-160XThe Tibetan Plateau is considered as one of most sensitive region to global change. Nutrient (N and P) availability is an important limiting ecological factor in cold terrestrial ecosystems such as the alpine belt of the Tibetan Plateau. We focused on Corydallis hendersonii, an endemic alpine species of the Tibetan Plateau. Exploring the N and P below- and above-ground responses of C. hendersonii to climatic factors is crucial for biodiversity conservation of the alpine Tibetan plateau under global change. We used the Outlying Mean Index and regression analyses to assess N and P stoichiometry and biomass responses in leaves and roots of C. hendersonii along climatic gradients. We found that investment and allocation of nutrient and biomass in C. hendersonii were mainly driven by rainfall continentality. In the eastern less-continental wet area of the Tibetan plateau, C. hendersonii had higher biomass in leaf, and lower N and P investment in roots than in the western more continental dry part. Specifically, 300 mm year−1 Mean annual precipitation (MAP) and ca. 80° Rainfall continentality index (GAMS) were threshold values of climate stress inducing strong nutrient limitation for C. hendersonii across the Tibetan Plateau. Our results suggest that rainfall continentality is the primary climatic driver of variation in biomass and nutrients allocation of C. hendersonii on the Tibetan Plateau. Thus, global warming and drying should induce a decrease in total biomass, a reduction in leaf N and P concentrations and an increase in root/shoot ratio in the alpine region of the Tibetan Plateau.Qien LiRichard MichaletXiao GuoHuichun XieMingzhu HeElsevierarticleBiomassNutrientsN:PTibetan PlateausCorydallis hendersoniiEcologyQH540-549.5ENEcological Indicators, Vol 132, Iss , Pp 108244- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biomass Nutrients N:P Tibetan Plateaus Corydallis hendersonii Ecology QH540-549.5
spellingShingle	Biomass Nutrients N:P Tibetan Plateaus Corydallis hendersonii Ecology QH540-549.5 Qien Li Richard Michalet Xiao Guo Huichun Xie Mingzhu He Variation in biomass and nutrients allocation of Corydalis hendersonii on the Tibetan Plateau with increasing rainfall continentality and altitude
description	The Tibetan Plateau is considered as one of most sensitive region to global change. Nutrient (N and P) availability is an important limiting ecological factor in cold terrestrial ecosystems such as the alpine belt of the Tibetan Plateau. We focused on Corydallis hendersonii, an endemic alpine species of the Tibetan Plateau. Exploring the N and P below- and above-ground responses of C. hendersonii to climatic factors is crucial for biodiversity conservation of the alpine Tibetan plateau under global change. We used the Outlying Mean Index and regression analyses to assess N and P stoichiometry and biomass responses in leaves and roots of C. hendersonii along climatic gradients. We found that investment and allocation of nutrient and biomass in C. hendersonii were mainly driven by rainfall continentality. In the eastern less-continental wet area of the Tibetan plateau, C. hendersonii had higher biomass in leaf, and lower N and P investment in roots than in the western more continental dry part. Specifically, 300 mm year−1 Mean annual precipitation (MAP) and ca. 80° Rainfall continentality index (GAMS) were threshold values of climate stress inducing strong nutrient limitation for C. hendersonii across the Tibetan Plateau. Our results suggest that rainfall continentality is the primary climatic driver of variation in biomass and nutrients allocation of C. hendersonii on the Tibetan Plateau. Thus, global warming and drying should induce a decrease in total biomass, a reduction in leaf N and P concentrations and an increase in root/shoot ratio in the alpine region of the Tibetan Plateau.
format	article
author	Qien Li Richard Michalet Xiao Guo Huichun Xie Mingzhu He
author_facet	Qien Li Richard Michalet Xiao Guo Huichun Xie Mingzhu He
author_sort	Qien Li
title	Variation in biomass and nutrients allocation of Corydalis hendersonii on the Tibetan Plateau with increasing rainfall continentality and altitude
title_short	Variation in biomass and nutrients allocation of Corydalis hendersonii on the Tibetan Plateau with increasing rainfall continentality and altitude
title_full	Variation in biomass and nutrients allocation of Corydalis hendersonii on the Tibetan Plateau with increasing rainfall continentality and altitude
title_fullStr	Variation in biomass and nutrients allocation of Corydalis hendersonii on the Tibetan Plateau with increasing rainfall continentality and altitude
title_full_unstemmed	Variation in biomass and nutrients allocation of Corydalis hendersonii on the Tibetan Plateau with increasing rainfall continentality and altitude
title_sort	variation in biomass and nutrients allocation of corydalis hendersonii on the tibetan plateau with increasing rainfall continentality and altitude
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/b2fab68febf14f908e171e4251ac378e
work_keys_str_mv	AT qienli variationinbiomassandnutrientsallocationofcorydalishendersoniionthetibetanplateauwithincreasingrainfallcontinentalityandaltitude AT richardmichalet variationinbiomassandnutrientsallocationofcorydalishendersoniionthetibetanplateauwithincreasingrainfallcontinentalityandaltitude AT xiaoguo variationinbiomassandnutrientsallocationofcorydalishendersoniionthetibetanplateauwithincreasingrainfallcontinentalityandaltitude AT huichunxie variationinbiomassandnutrientsallocationofcorydalishendersoniionthetibetanplateauwithincreasingrainfallcontinentalityandaltitude AT mingzhuhe variationinbiomassandnutrientsallocationofcorydalishendersoniionthetibetanplateauwithincreasingrainfallcontinentalityandaltitude
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Variation in biomass and nutrients allocation of Corydalis hendersonii on the Tibetan Plateau with increasing rainfall continentality and altitude

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