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Non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in Northern Tibet
While litter decomposition is a fundamental ecological process, previous studies have mainly focused on the decay of single species. In this study, we conducted a litter-mixing experiment to investigate litter diversity effects on greenhouse gas (GHG) emissions from an alpine steppe soil in Northern...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4669496/ https://www.ncbi.nlm.nih.gov/pubmed/26634911 http://dx.doi.org/10.1038/srep17664 |
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author | Chen, Youchao Sun, Jian Xie, Fangting Yan, Yan Wang, Xiaodan Cheng, Genwei Lu, Xuyang |
author_facet | Chen, Youchao Sun, Jian Xie, Fangting Yan, Yan Wang, Xiaodan Cheng, Genwei Lu, Xuyang |
author_sort | Chen, Youchao |
collection | PubMed |
description | While litter decomposition is a fundamental ecological process, previous studies have mainly focused on the decay of single species. In this study, we conducted a litter-mixing experiment to investigate litter diversity effects on greenhouse gas (GHG) emissions from an alpine steppe soil in Northern Tibet. Significant non-additive effects of litter diversity on GHG dynamics can be detected; these non-additive effects were the result of species composition rather than species richness. Synergistic effects were frequent for CO(2) and N(2)O emissions, as they were found to occur in 70.5% and 47.1% of total cases, respectively; antagonistic effects on CH(4) uptake predominated in 60.3% of the cases examined. The degree of synergism and antagonism may be significantly impacted by litter chemical traits, such as lignin and N, lignin:N ratio, and total phenols during decomposition (P < 0.05). In addition, the relationship between chemical traits and litter-mixing effects changed over incubation time. Our study provides an opportunity to gain insight into the relationship between litter diversity and soil ecological processes. The results indicate that higher plant diversity may generally enhance CO(2) and N(2)O emissions while inhibiting CH(4) uptake; meanwhile, the direction and strength of non-additive effects appear to be related to litter chemical traits. |
format | Online Article Text |
id | pubmed-4669496 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-46694962015-12-11 Non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in Northern Tibet Chen, Youchao Sun, Jian Xie, Fangting Yan, Yan Wang, Xiaodan Cheng, Genwei Lu, Xuyang Sci Rep Article While litter decomposition is a fundamental ecological process, previous studies have mainly focused on the decay of single species. In this study, we conducted a litter-mixing experiment to investigate litter diversity effects on greenhouse gas (GHG) emissions from an alpine steppe soil in Northern Tibet. Significant non-additive effects of litter diversity on GHG dynamics can be detected; these non-additive effects were the result of species composition rather than species richness. Synergistic effects were frequent for CO(2) and N(2)O emissions, as they were found to occur in 70.5% and 47.1% of total cases, respectively; antagonistic effects on CH(4) uptake predominated in 60.3% of the cases examined. The degree of synergism and antagonism may be significantly impacted by litter chemical traits, such as lignin and N, lignin:N ratio, and total phenols during decomposition (P < 0.05). In addition, the relationship between chemical traits and litter-mixing effects changed over incubation time. Our study provides an opportunity to gain insight into the relationship between litter diversity and soil ecological processes. The results indicate that higher plant diversity may generally enhance CO(2) and N(2)O emissions while inhibiting CH(4) uptake; meanwhile, the direction and strength of non-additive effects appear to be related to litter chemical traits. Nature Publishing Group 2015-12-04 /pmc/articles/PMC4669496/ /pubmed/26634911 http://dx.doi.org/10.1038/srep17664 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Chen, Youchao Sun, Jian Xie, Fangting Yan, Yan Wang, Xiaodan Cheng, Genwei Lu, Xuyang Non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in Northern Tibet |
title | Non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in Northern Tibet |
title_full | Non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in Northern Tibet |
title_fullStr | Non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in Northern Tibet |
title_full_unstemmed | Non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in Northern Tibet |
title_short | Non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in Northern Tibet |
title_sort | non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in northern tibet |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4669496/ https://www.ncbi.nlm.nih.gov/pubmed/26634911 http://dx.doi.org/10.1038/srep17664 |
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