Cargando…
Effects of Long-Term (17 Years) Nitrogen Input on Soil Bacterial Community in Sanjiang Plain: The Largest Marsh Wetland in China
Increased nitrogen (N) input from natural factors and human activities may negatively impact the health of marsh wetlands. However, the understanding of how exogenous N affects the ecosystem remains limited. We selected the soil bacterial community as the index of ecosystem health and performed a lo...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10300847/ https://www.ncbi.nlm.nih.gov/pubmed/37375054 http://dx.doi.org/10.3390/microorganisms11061552 |
_version_ | 1785064672818364416 |
---|---|
author | Chen, Zhenbo Zhang, Chi Liu, Zhihong Song, Changchun Xin, Shuai |
author_facet | Chen, Zhenbo Zhang, Chi Liu, Zhihong Song, Changchun Xin, Shuai |
author_sort | Chen, Zhenbo |
collection | PubMed |
description | Increased nitrogen (N) input from natural factors and human activities may negatively impact the health of marsh wetlands. However, the understanding of how exogenous N affects the ecosystem remains limited. We selected the soil bacterial community as the index of ecosystem health and performed a long-term N input experiment, including four N levels of 0, 6, 12, and 24 gN·m(−2)·a(−1) (denoted as CK, C1, C2, and C3, respectively). The results showed that a high-level N (24 gN·m(−2)·a(−1)) input could significantly reduce the Chao index and ACE index for the bacterial community and inhibit some dominant microorganisms. The RDA results indicated that TN and NH(4)(+) were the critical factors influencing the soil microbial community under the long-term N input. Moreover, the long-term N input was found to significantly reduce the abundance of Azospirillum and Desulfovibrio, which were typical N-fixing microorganisms. Conversely, the long-term N input was found to significantly increase the abundance of Nitrosospira and Clostridium_sensu_stricto_1, which were typical nitrifying and denitrifying microorganisms. Increased soil N content has been suggested to inhibit the N fixation function of the wetland and exert a positive effect on the processes of nitrification and denitrification in the wetland ecosystem. Our research can be used to improve strategies to protect wetland health. |
format | Online Article Text |
id | pubmed-10300847 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-103008472023-06-29 Effects of Long-Term (17 Years) Nitrogen Input on Soil Bacterial Community in Sanjiang Plain: The Largest Marsh Wetland in China Chen, Zhenbo Zhang, Chi Liu, Zhihong Song, Changchun Xin, Shuai Microorganisms Article Increased nitrogen (N) input from natural factors and human activities may negatively impact the health of marsh wetlands. However, the understanding of how exogenous N affects the ecosystem remains limited. We selected the soil bacterial community as the index of ecosystem health and performed a long-term N input experiment, including four N levels of 0, 6, 12, and 24 gN·m(−2)·a(−1) (denoted as CK, C1, C2, and C3, respectively). The results showed that a high-level N (24 gN·m(−2)·a(−1)) input could significantly reduce the Chao index and ACE index for the bacterial community and inhibit some dominant microorganisms. The RDA results indicated that TN and NH(4)(+) were the critical factors influencing the soil microbial community under the long-term N input. Moreover, the long-term N input was found to significantly reduce the abundance of Azospirillum and Desulfovibrio, which were typical N-fixing microorganisms. Conversely, the long-term N input was found to significantly increase the abundance of Nitrosospira and Clostridium_sensu_stricto_1, which were typical nitrifying and denitrifying microorganisms. Increased soil N content has been suggested to inhibit the N fixation function of the wetland and exert a positive effect on the processes of nitrification and denitrification in the wetland ecosystem. Our research can be used to improve strategies to protect wetland health. MDPI 2023-06-10 /pmc/articles/PMC10300847/ /pubmed/37375054 http://dx.doi.org/10.3390/microorganisms11061552 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Chen, Zhenbo Zhang, Chi Liu, Zhihong Song, Changchun Xin, Shuai Effects of Long-Term (17 Years) Nitrogen Input on Soil Bacterial Community in Sanjiang Plain: The Largest Marsh Wetland in China |
title | Effects of Long-Term (17 Years) Nitrogen Input on Soil Bacterial Community in Sanjiang Plain: The Largest Marsh Wetland in China |
title_full | Effects of Long-Term (17 Years) Nitrogen Input on Soil Bacterial Community in Sanjiang Plain: The Largest Marsh Wetland in China |
title_fullStr | Effects of Long-Term (17 Years) Nitrogen Input on Soil Bacterial Community in Sanjiang Plain: The Largest Marsh Wetland in China |
title_full_unstemmed | Effects of Long-Term (17 Years) Nitrogen Input on Soil Bacterial Community in Sanjiang Plain: The Largest Marsh Wetland in China |
title_short | Effects of Long-Term (17 Years) Nitrogen Input on Soil Bacterial Community in Sanjiang Plain: The Largest Marsh Wetland in China |
title_sort | effects of long-term (17 years) nitrogen input on soil bacterial community in sanjiang plain: the largest marsh wetland in china |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10300847/ https://www.ncbi.nlm.nih.gov/pubmed/37375054 http://dx.doi.org/10.3390/microorganisms11061552 |
work_keys_str_mv | AT chenzhenbo effectsoflongterm17yearsnitrogeninputonsoilbacterialcommunityinsanjiangplainthelargestmarshwetlandinchina AT zhangchi effectsoflongterm17yearsnitrogeninputonsoilbacterialcommunityinsanjiangplainthelargestmarshwetlandinchina AT liuzhihong effectsoflongterm17yearsnitrogeninputonsoilbacterialcommunityinsanjiangplainthelargestmarshwetlandinchina AT songchangchun effectsoflongterm17yearsnitrogeninputonsoilbacterialcommunityinsanjiangplainthelargestmarshwetlandinchina AT xinshuai effectsoflongterm17yearsnitrogeninputonsoilbacterialcommunityinsanjiangplainthelargestmarshwetlandinchina |