Microbial resource limitation and regulation of soil carbon cycle in Zoige Plateau peatland soils

Ling Luo; Lingyao Zhu; Wen Hong; Ji Dong Gu; Dezhi Shi; Yan He; Yinlong Xiao; Dong Tian; Shirong Zhang; Shihuai Deng; Ting Lan; Ouping Deng

doi:10.1016/j.catena.2021.105478

Microbial resource limitation and regulation of soil carbon cycle in Zoige Plateau peatland soils

Ling Luo^*, Lingyao Zhu, Wen Hong, Ji Dong Gu, Dezhi Shi, Yan He, Yinlong Xiao, Dong Tian, Shirong Zhang, Shihuai Deng, Ting Lan, Ouping Deng

^*Corresponding author for this work

Environmental Science and Engineering

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

16 Scopus citations

Abstract

A large quantity of carbon (C) storage in peatland soils plays an important role in global C cycling. Microbial resource limitation and environmental factors can drive C cycling. However, the microbial resource limitation and regulator of C cycling in such an ecosystem are debated and still unclear. Therefore, this study chose Zoige, the largest peatland in the Qinghai-Tibet Plateau of China, to identify microbial resource limitation by analyzing ecoenzymatic stoichiometry and the regulation of soil organic C (SOC) through the interrelationships correlating SOC to abiotic (soil properties) and biotic factors (ecoenzyme activities, microbial communities, and abundance). The results demonstrated that soil microbial resource limitation varied in different seasons, across peatland types, and with depths; SOC content was more affected by abiotic factors (total nitrogen, total phosphorus, Olsen-phosphorus, moisture content) than biotic factors at the regional scale, and the factors driving C cycling differed among peatland types at the subregional scale. The path analysis further emphasized the importance of abiotic factors in C cycling, especially total nitrogen. This study provides important information for the understanding regulator of C cycling in peatland soils, which may help mitigate global climate change.

Original language	English
Article number	105478
Journal	Catena
Volume	205
DOIs	https://doi.org/10.1016/j.catena.2021.105478
State	Published - Oct 2021

Keywords

Ecoenzymatic stoichiometry
Ecoenzyme activity
Microbial resource limitation
Qinghai-Tibet Plateau
Soil organic carbon

UN SDGs

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

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title = "Microbial resource limitation and regulation of soil carbon cycle in Zoige Plateau peatland soils",

abstract = "A large quantity of carbon (C) storage in peatland soils plays an important role in global C cycling. Microbial resource limitation and environmental factors can drive C cycling. However, the microbial resource limitation and regulator of C cycling in such an ecosystem are debated and still unclear. Therefore, this study chose Zoige, the largest peatland in the Qinghai-Tibet Plateau of China, to identify microbial resource limitation by analyzing ecoenzymatic stoichiometry and the regulation of soil organic C (SOC) through the interrelationships correlating SOC to abiotic (soil properties) and biotic factors (ecoenzyme activities, microbial communities, and abundance). The results demonstrated that soil microbial resource limitation varied in different seasons, across peatland types, and with depths; SOC content was more affected by abiotic factors (total nitrogen, total phosphorus, Olsen-phosphorus, moisture content) than biotic factors at the regional scale, and the factors driving C cycling differed among peatland types at the subregional scale. The path analysis further emphasized the importance of abiotic factors in C cycling, especially total nitrogen. This study provides important information for the understanding regulator of C cycling in peatland soils, which may help mitigate global climate change.",

keywords = "Ecoenzymatic stoichiometry, Ecoenzyme activity, Microbial resource limitation, Qinghai-Tibet Plateau, Soil organic carbon",

author = "Ling Luo and Lingyao Zhu and Wen Hong and Gu, {Ji Dong} and Dezhi Shi and Yan He and Yinlong Xiao and Dong Tian and Shirong Zhang and Shihuai Deng and Ting Lan and Ouping Deng",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = oct,

doi = "10.1016/j.catena.2021.105478",

language = "英语",

volume = "205",

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T1 - Microbial resource limitation and regulation of soil carbon cycle in Zoige Plateau peatland soils

AU - Luo, Ling

AU - Zhu, Lingyao

AU - Hong, Wen

AU - Gu, Ji Dong

AU - Shi, Dezhi

AU - He, Yan

AU - Xiao, Yinlong

AU - Tian, Dong

AU - Zhang, Shirong

AU - Deng, Shihuai

AU - Lan, Ting

AU - Deng, Ouping

PY - 2021/10

Y1 - 2021/10

N2 - A large quantity of carbon (C) storage in peatland soils plays an important role in global C cycling. Microbial resource limitation and environmental factors can drive C cycling. However, the microbial resource limitation and regulator of C cycling in such an ecosystem are debated and still unclear. Therefore, this study chose Zoige, the largest peatland in the Qinghai-Tibet Plateau of China, to identify microbial resource limitation by analyzing ecoenzymatic stoichiometry and the regulation of soil organic C (SOC) through the interrelationships correlating SOC to abiotic (soil properties) and biotic factors (ecoenzyme activities, microbial communities, and abundance). The results demonstrated that soil microbial resource limitation varied in different seasons, across peatland types, and with depths; SOC content was more affected by abiotic factors (total nitrogen, total phosphorus, Olsen-phosphorus, moisture content) than biotic factors at the regional scale, and the factors driving C cycling differed among peatland types at the subregional scale. The path analysis further emphasized the importance of abiotic factors in C cycling, especially total nitrogen. This study provides important information for the understanding regulator of C cycling in peatland soils, which may help mitigate global climate change.

AB - A large quantity of carbon (C) storage in peatland soils plays an important role in global C cycling. Microbial resource limitation and environmental factors can drive C cycling. However, the microbial resource limitation and regulator of C cycling in such an ecosystem are debated and still unclear. Therefore, this study chose Zoige, the largest peatland in the Qinghai-Tibet Plateau of China, to identify microbial resource limitation by analyzing ecoenzymatic stoichiometry and the regulation of soil organic C (SOC) through the interrelationships correlating SOC to abiotic (soil properties) and biotic factors (ecoenzyme activities, microbial communities, and abundance). The results demonstrated that soil microbial resource limitation varied in different seasons, across peatland types, and with depths; SOC content was more affected by abiotic factors (total nitrogen, total phosphorus, Olsen-phosphorus, moisture content) than biotic factors at the regional scale, and the factors driving C cycling differed among peatland types at the subregional scale. The path analysis further emphasized the importance of abiotic factors in C cycling, especially total nitrogen. This study provides important information for the understanding regulator of C cycling in peatland soils, which may help mitigate global climate change.

KW - Ecoenzymatic stoichiometry

KW - Ecoenzyme activity

KW - Microbial resource limitation

KW - Qinghai-Tibet Plateau

KW - Soil organic carbon

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VL - 205

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Microbial resource limitation and regulation of soil carbon cycle in Zoige Plateau peatland soils

Abstract

Keywords

UN SDGs

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