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Non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in Northern Tibet
Chen Y. C.; Sun, J.; Xie, F. T.; Yan, Y.; Wang, X. D.; Cheng, G. W.; Lu, X. Y.
Source PublicationScientific Reports
2015
Volume5
Keywordspecies-diversity plant diversity leaf-litter n2o fluxes decomposition dynamics ecosystem function patagonian monte nitrous-oxide quality carbon
AbstractWhile 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 CO2 and N2O emissions, as they were found to occur in 70.5% and 47.1% of total cases, respectively; antagonistic effects on CH4 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 CO2 and N2O emissions while inhibiting CH4 uptake; meanwhile, the direction and strength of nonadditive effects appear to be related to litter chemical traits.
Indexed BySCI
Language英语
ISSN2045-2322
DOI10.1038/srep17664
Citation statistics
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43470
Collection历年回溯文献
Recommended Citation
GB/T 7714
Chen Y. C.,Sun, J.,Xie, F. T.,et al. Non-additive effects of litter diversity on greenhouse gas emissions from alpine steppe soil in Northern Tibet. 2015.
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