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Snow-cover loss attenuates the effects of N addition on desert nutrient cycling and microbial community

Desert ecosystems are sensitive to nitrogen (N) deposition. Considering snow is an important source of soil water, which is vital for plant growth and the biogeochemical cycle in desert areas. The effects of N deposition on biological soil crusts (BSCs) could be impacted by the removal of snow-cover...

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Autores principales: Yang, Yaru, Liu, Weiguo, Adams, Jonathan M., Song, Bin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10400093/
https://www.ncbi.nlm.nih.gov/pubmed/37546244
http://dx.doi.org/10.3389/fpls.2023.1166897
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author Yang, Yaru
Liu, Weiguo
Adams, Jonathan M.
Song, Bin
author_facet Yang, Yaru
Liu, Weiguo
Adams, Jonathan M.
Song, Bin
author_sort Yang, Yaru
collection PubMed
description Desert ecosystems are sensitive to nitrogen (N) deposition. Considering snow is an important source of soil water, which is vital for plant growth and the biogeochemical cycle in desert areas. The effects of N deposition on biological soil crusts (BSCs) could be impacted by the removal of snow-cover. Here, we established a split-plot experiment in the Gurbantunggut Desert to examine the effects of snow-cover treatments on soil nutrients, enzyme activities, and the bacterial community under various N addition. The removal of snow-cover reduced the soil nutrients with light and moderate N addition, it also reduced the activities of urease (URE) and alkaline phosphatase (PHOS). The structural equation model (SEM) result indicated that low soil moisture (SMO) under snow-uncover inhibited the bacterial community, particularly suppressed bacterial diversity. Additionally, N addition indirectly affected the bacterial community via modifications to soil nutrients, and soil organic matter (SOM) (P < 0.001) was the crucial factor. Snow-uncover weakened soil nutrient and enzyme responses to N addition, indicating that snow-cover removal reduced the sensitivity of the desert ecosystem to N deposition. The study highlights the critical role of snow-cover in the desert ecosystem, raising our awareness of the ecological risks of BSCs in future global change.
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spelling pubmed-104000932023-08-04 Snow-cover loss attenuates the effects of N addition on desert nutrient cycling and microbial community Yang, Yaru Liu, Weiguo Adams, Jonathan M. Song, Bin Front Plant Sci Plant Science Desert ecosystems are sensitive to nitrogen (N) deposition. Considering snow is an important source of soil water, which is vital for plant growth and the biogeochemical cycle in desert areas. The effects of N deposition on biological soil crusts (BSCs) could be impacted by the removal of snow-cover. Here, we established a split-plot experiment in the Gurbantunggut Desert to examine the effects of snow-cover treatments on soil nutrients, enzyme activities, and the bacterial community under various N addition. The removal of snow-cover reduced the soil nutrients with light and moderate N addition, it also reduced the activities of urease (URE) and alkaline phosphatase (PHOS). The structural equation model (SEM) result indicated that low soil moisture (SMO) under snow-uncover inhibited the bacterial community, particularly suppressed bacterial diversity. Additionally, N addition indirectly affected the bacterial community via modifications to soil nutrients, and soil organic matter (SOM) (P < 0.001) was the crucial factor. Snow-uncover weakened soil nutrient and enzyme responses to N addition, indicating that snow-cover removal reduced the sensitivity of the desert ecosystem to N deposition. The study highlights the critical role of snow-cover in the desert ecosystem, raising our awareness of the ecological risks of BSCs in future global change. Frontiers Media S.A. 2023-07-20 /pmc/articles/PMC10400093/ /pubmed/37546244 http://dx.doi.org/10.3389/fpls.2023.1166897 Text en Copyright © 2023 Yang, Liu, Adams and Song 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
Yang, Yaru
Liu, Weiguo
Adams, Jonathan M.
Song, Bin
Snow-cover loss attenuates the effects of N addition on desert nutrient cycling and microbial community
title Snow-cover loss attenuates the effects of N addition on desert nutrient cycling and microbial community
title_full Snow-cover loss attenuates the effects of N addition on desert nutrient cycling and microbial community
title_fullStr Snow-cover loss attenuates the effects of N addition on desert nutrient cycling and microbial community
title_full_unstemmed Snow-cover loss attenuates the effects of N addition on desert nutrient cycling and microbial community
title_short Snow-cover loss attenuates the effects of N addition on desert nutrient cycling and microbial community
title_sort snow-cover loss attenuates the effects of n addition on desert nutrient cycling and microbial community
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10400093/
https://www.ncbi.nlm.nih.gov/pubmed/37546244
http://dx.doi.org/10.3389/fpls.2023.1166897
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