Cargando…

Distinguishing Stoichiometric Homeostasis of Soil Microbial Biomass in Alpine Grassland Ecosystems: Evidence From 5,000 km Belt Transect Across Qinghai–Tibet Plateau

The biogeographic characteristics of soil microbial biomass stoichiometry homeostasis and also its mechanisms are commonly thought to be key factors for the survival strategies and resource utilization of soil microbes under extreme habitat. In this work, we conducted a 5,000-km transect filed surve...

Descripción completa

Detalles Bibliográficos
Autores principales: Fan, Jihui, Liu, Tianyuan, Liao, Ying, Li, Yiying, Yan, Yan, Lu, Xuyang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8675581/
https://www.ncbi.nlm.nih.gov/pubmed/34925425
http://dx.doi.org/10.3389/fpls.2021.781695
_version_ 1784615898606206976
author Fan, Jihui
Liu, Tianyuan
Liao, Ying
Li, Yiying
Yan, Yan
Lu, Xuyang
author_facet Fan, Jihui
Liu, Tianyuan
Liao, Ying
Li, Yiying
Yan, Yan
Lu, Xuyang
author_sort Fan, Jihui
collection PubMed
description The biogeographic characteristics of soil microbial biomass stoichiometry homeostasis and also its mechanisms are commonly thought to be key factors for the survival strategies and resource utilization of soil microbes under extreme habitat. In this work, we conducted a 5,000-km transect filed survey in alpine grassland across Qinghai–Tibet Plateau in 2015 to measure soil microbial biomass carbon (MBC) and nitrogen (MBN) across alpine steppe and meadow. Based on the differences of climate and soil conditions between alpine steppe and meadow, the variation coefficient was calculated to investigate the homeostatic degree of MBC to MBN. Furthermore, the “trade-off” model was utilized to deeply distinguish the homeostasis degree of MBC/MBN between alpine steppe and meadow, and the regression analysis was used to explore the variability of trade-off in response to environmental factors in the alpine grassland. The results showed that the coefficient of variation (CV) of MBC/MBN in alpine meadow (CV = 0.4) was lower than alpine steppe (CV = 0.7). According to the trade-off model, microbial turnover activity of soil N relative to soil C increased rapidly and then decreased slightly with soil organic carbon (SOC), soil total nitrogen (STN), and soil water content across alpine meadow. Nevertheless, in alpine steppe, SOC/STN had a positive effect on microbial turnover of soil N. These results suggested that water, heat, and soil nutrients availability were the key factors affecting the C:N stoichiometry homeostasis of soil microbial biomass in Qinghai–Tibet Plateau (QTP)’s alpine grassland. Since the difference of survival strategy of the trade-off demands between soil C and N resulting in different patterns and mechanism, the stoichiometry homeostasis of soil microbial biomass was more stable in alpine meadow than in alpine steppe.
format Online
Article
Text
id pubmed-8675581
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-86755812021-12-17 Distinguishing Stoichiometric Homeostasis of Soil Microbial Biomass in Alpine Grassland Ecosystems: Evidence From 5,000 km Belt Transect Across Qinghai–Tibet Plateau Fan, Jihui Liu, Tianyuan Liao, Ying Li, Yiying Yan, Yan Lu, Xuyang Front Plant Sci Plant Science The biogeographic characteristics of soil microbial biomass stoichiometry homeostasis and also its mechanisms are commonly thought to be key factors for the survival strategies and resource utilization of soil microbes under extreme habitat. In this work, we conducted a 5,000-km transect filed survey in alpine grassland across Qinghai–Tibet Plateau in 2015 to measure soil microbial biomass carbon (MBC) and nitrogen (MBN) across alpine steppe and meadow. Based on the differences of climate and soil conditions between alpine steppe and meadow, the variation coefficient was calculated to investigate the homeostatic degree of MBC to MBN. Furthermore, the “trade-off” model was utilized to deeply distinguish the homeostasis degree of MBC/MBN between alpine steppe and meadow, and the regression analysis was used to explore the variability of trade-off in response to environmental factors in the alpine grassland. The results showed that the coefficient of variation (CV) of MBC/MBN in alpine meadow (CV = 0.4) was lower than alpine steppe (CV = 0.7). According to the trade-off model, microbial turnover activity of soil N relative to soil C increased rapidly and then decreased slightly with soil organic carbon (SOC), soil total nitrogen (STN), and soil water content across alpine meadow. Nevertheless, in alpine steppe, SOC/STN had a positive effect on microbial turnover of soil N. These results suggested that water, heat, and soil nutrients availability were the key factors affecting the C:N stoichiometry homeostasis of soil microbial biomass in Qinghai–Tibet Plateau (QTP)’s alpine grassland. Since the difference of survival strategy of the trade-off demands between soil C and N resulting in different patterns and mechanism, the stoichiometry homeostasis of soil microbial biomass was more stable in alpine meadow than in alpine steppe. Frontiers Media S.A. 2021-12-02 /pmc/articles/PMC8675581/ /pubmed/34925425 http://dx.doi.org/10.3389/fpls.2021.781695 Text en Copyright © 2021 Fan, Liu, Liao, Li, Yan and Lu. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Fan, Jihui
Liu, Tianyuan
Liao, Ying
Li, Yiying
Yan, Yan
Lu, Xuyang
Distinguishing Stoichiometric Homeostasis of Soil Microbial Biomass in Alpine Grassland Ecosystems: Evidence From 5,000 km Belt Transect Across Qinghai–Tibet Plateau
title Distinguishing Stoichiometric Homeostasis of Soil Microbial Biomass in Alpine Grassland Ecosystems: Evidence From 5,000 km Belt Transect Across Qinghai–Tibet Plateau
title_full Distinguishing Stoichiometric Homeostasis of Soil Microbial Biomass in Alpine Grassland Ecosystems: Evidence From 5,000 km Belt Transect Across Qinghai–Tibet Plateau
title_fullStr Distinguishing Stoichiometric Homeostasis of Soil Microbial Biomass in Alpine Grassland Ecosystems: Evidence From 5,000 km Belt Transect Across Qinghai–Tibet Plateau
title_full_unstemmed Distinguishing Stoichiometric Homeostasis of Soil Microbial Biomass in Alpine Grassland Ecosystems: Evidence From 5,000 km Belt Transect Across Qinghai–Tibet Plateau
title_short Distinguishing Stoichiometric Homeostasis of Soil Microbial Biomass in Alpine Grassland Ecosystems: Evidence From 5,000 km Belt Transect Across Qinghai–Tibet Plateau
title_sort distinguishing stoichiometric homeostasis of soil microbial biomass in alpine grassland ecosystems: evidence from 5,000 km belt transect across qinghai–tibet plateau
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8675581/
https://www.ncbi.nlm.nih.gov/pubmed/34925425
http://dx.doi.org/10.3389/fpls.2021.781695
work_keys_str_mv AT fanjihui distinguishingstoichiometrichomeostasisofsoilmicrobialbiomassinalpinegrasslandecosystemsevidencefrom5000kmbelttransectacrossqinghaitibetplateau
AT liutianyuan distinguishingstoichiometrichomeostasisofsoilmicrobialbiomassinalpinegrasslandecosystemsevidencefrom5000kmbelttransectacrossqinghaitibetplateau
AT liaoying distinguishingstoichiometrichomeostasisofsoilmicrobialbiomassinalpinegrasslandecosystemsevidencefrom5000kmbelttransectacrossqinghaitibetplateau
AT liyiying distinguishingstoichiometrichomeostasisofsoilmicrobialbiomassinalpinegrasslandecosystemsevidencefrom5000kmbelttransectacrossqinghaitibetplateau
AT yanyan distinguishingstoichiometrichomeostasisofsoilmicrobialbiomassinalpinegrasslandecosystemsevidencefrom5000kmbelttransectacrossqinghaitibetplateau
AT luxuyang distinguishingstoichiometrichomeostasisofsoilmicrobialbiomassinalpinegrasslandecosystemsevidencefrom5000kmbelttransectacrossqinghaitibetplateau