Impact of drought on terrestrial ecosystem C-N-P stoichiometry and microbial nutrient limitation

Hongwei Xu; Qing Qu; Jiaping Yang; Zhen Wang; Minggang Wang; Rentao Liu; Sha Xue

doi:10.1016/j.still.2023.105951

Impact of drought on terrestrial ecosystem C-N-P stoichiometry and microbial nutrient limitation

Hongwei Xu
, Qing Qu
, Jiaping Yang
, Zhen Wang
, Minggang Wang
, Rentao Liu
, Sha Xue

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Carbon (C), nitrogen (N), and phosphorus (P) stoichiometric traits are of critical importance to ecosystem functioning. Exploring the effects of drought on the C-N-P stoichiometric is of great significance for understanding element cycling and nutrient limitation in terrestrial ecosystems; however, it has not been uniformly and reliably concluded on a global scale. Here, based on 505 paired observational statistics, we systematically analyzed the effect of drought on terrestrial ecosystem C-N-P stoichiometry on the global scale. Drought greatly decreased the C:N ratio in soil (9.9%), enzymes (13.9%), shoots (7.9%), and roots (8.1%). Furthermore, soil microbes were limited by N, whereas plants were restricted by P under drought stress. Drought intensity and duration were significantly negatively correlated with shoot N:P and vector angle. Mean annual temperature (MAT) was negatively correlated with enzyme N:P and vector angle but had less effect on plant C:N:P stoichiometry. In conclusion, heavy drought intensity and long duration attenuated the P limitation in the shoot but enhanced the microbial N limitation.

Original language	English
Article number	105951
Journal	Soil and Tillage Research
Volume	236
DOIs	https://doi.org/10.1016/j.still.2023.105951
State	Published - Feb 2024
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Funding

This work was supported by the National Natural Science Foundation of China ( 42307571 ), Forestry Ecological Engineering in Upper Reaches of Yangtze River Key Laboratory of Sichuan Province of Sichuan Agricultural University ( 202301 ), Open Fund of Ecological Security and Protection Key Laboratory of Sichuan Province of Mianyang Normal University ( ESP202302 ), and Open Fund for Key Lab. of Land Degradation and Ecological Restoration in northwestern China of Ningxia University ( LDER2023Z02 ). This work was supported by the National Natural Science Foundation of China (42307571), Forestry Ecological Engineering in Upper Reaches of Yangtze River Key Laboratory of Sichuan Province of Sichuan Agricultural University (202301), Open Fund of Ecological Security and Protection Key Laboratory of Sichuan Province of Mianyang Normal University (ESP202302), and Open Fund for Key Lab. of Land Degradation and Ecological Restoration in northwestern China of Ningxia University (LDER2023Z02).

Funders	Funder number
Open Fund of Ecological Security and Protection Key Laboratory of Sichuan Province of Mianyang Normal University	ESP202302
Sichuan Province of Sichuan Agricultural University	202301
Ningxia University	LDER2023Z02
National Natural Science Foundation of China	42307571

Keywords

Climate change
Drought
Ecological stoichiometry
Ecosystem function
Meta-analysis
Plant-soil-microbes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.still.2023.105951

Cite this

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title = "Impact of drought on terrestrial ecosystem C-N-P stoichiometry and microbial nutrient limitation",

abstract = "Carbon (C), nitrogen (N), and phosphorus (P) stoichiometric traits are of critical importance to ecosystem functioning. Exploring the effects of drought on the C-N-P stoichiometric is of great significance for understanding element cycling and nutrient limitation in terrestrial ecosystems; however, it has not been uniformly and reliably concluded on a global scale. Here, based on 505 paired observational statistics, we systematically analyzed the effect of drought on terrestrial ecosystem C-N-P stoichiometry on the global scale. Drought greatly decreased the C:N ratio in soil (9.9\%), enzymes (13.9\%), shoots (7.9\%), and roots (8.1\%). Furthermore, soil microbes were limited by N, whereas plants were restricted by P under drought stress. Drought intensity and duration were significantly negatively correlated with shoot N:P and vector angle. Mean annual temperature (MAT) was negatively correlated with enzyme N:P and vector angle but had less effect on plant C:N:P stoichiometry. In conclusion, heavy drought intensity and long duration attenuated the P limitation in the shoot but enhanced the microbial N limitation.",

keywords = "Climate change, Drought, Ecological stoichiometry, Ecosystem function, Meta-analysis, Plant-soil-microbes",

author = "Hongwei Xu and Qing Qu and Jiaping Yang and Zhen Wang and Minggang Wang and Rentao Liu and Sha Xue",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2024",

month = feb,

doi = "10.1016/j.still.2023.105951",

language = "אנגלית",

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AU - Xu, Hongwei

AU - Qu, Qing

AU - Yang, Jiaping

AU - Wang, Zhen

AU - Wang, Minggang

AU - Liu, Rentao

AU - Xue, Sha

PY - 2024/2

Y1 - 2024/2

N2 - Carbon (C), nitrogen (N), and phosphorus (P) stoichiometric traits are of critical importance to ecosystem functioning. Exploring the effects of drought on the C-N-P stoichiometric is of great significance for understanding element cycling and nutrient limitation in terrestrial ecosystems; however, it has not been uniformly and reliably concluded on a global scale. Here, based on 505 paired observational statistics, we systematically analyzed the effect of drought on terrestrial ecosystem C-N-P stoichiometry on the global scale. Drought greatly decreased the C:N ratio in soil (9.9%), enzymes (13.9%), shoots (7.9%), and roots (8.1%). Furthermore, soil microbes were limited by N, whereas plants were restricted by P under drought stress. Drought intensity and duration were significantly negatively correlated with shoot N:P and vector angle. Mean annual temperature (MAT) was negatively correlated with enzyme N:P and vector angle but had less effect on plant C:N:P stoichiometry. In conclusion, heavy drought intensity and long duration attenuated the P limitation in the shoot but enhanced the microbial N limitation.

AB - Carbon (C), nitrogen (N), and phosphorus (P) stoichiometric traits are of critical importance to ecosystem functioning. Exploring the effects of drought on the C-N-P stoichiometric is of great significance for understanding element cycling and nutrient limitation in terrestrial ecosystems; however, it has not been uniformly and reliably concluded on a global scale. Here, based on 505 paired observational statistics, we systematically analyzed the effect of drought on terrestrial ecosystem C-N-P stoichiometry on the global scale. Drought greatly decreased the C:N ratio in soil (9.9%), enzymes (13.9%), shoots (7.9%), and roots (8.1%). Furthermore, soil microbes were limited by N, whereas plants were restricted by P under drought stress. Drought intensity and duration were significantly negatively correlated with shoot N:P and vector angle. Mean annual temperature (MAT) was negatively correlated with enzyme N:P and vector angle but had less effect on plant C:N:P stoichiometry. In conclusion, heavy drought intensity and long duration attenuated the P limitation in the shoot but enhanced the microbial N limitation.

KW - Climate change

KW - Drought

KW - Ecological stoichiometry

KW - Ecosystem function

KW - Meta-analysis

KW - Plant-soil-microbes

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SN - 0167-1987

VL - 236

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Impact of drought on terrestrial ecosystem C-N-P stoichiometry and microbial nutrient limitation

Abstract

Bibliographical note

Funding

Keywords

UN SDGs

Access to Document

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