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Relationships between ammonia-oxidizing communities, soil methane uptake and nitrous oxide fluxes in a subtropical plantation soil with nitrogen enrichment
Wang Y. S.; Cheng, S. L.; Fang, H. J.; Yu, G. R.; Yang, X. M.; Xu, M. J.; Dang, X. S.; Li, L. S.; Wang, L.
Source PublicationEuropean Journal of Soil Biology
2016
Volume73
Pages84-92
KeywordN fertilization Soil CH4 uptake Soil N2O emission Ammonia-oxidizers Subtropical plantation nitrosomonas-europaea nitrification inhibitor methanotrophic bacteria southern china forest soils archaea oxidation abundance n2o fertilization
AbstractAmmonia-oxidizers play an essential role in nitrogen (N) transformation and nitrous oxide (N2O) emission in forest soils. It remains unclear if ammonia-oxidizers affect interaction between methane (CH4) uptake and N2O emission. Our specific goal was to test the impacts of changes in ammonia oxidizing communities elicited by N enrichment on soil CH4 uptake and N2O emission. Based on a field experiment, two-forms (NH4CI and NaNO3) and two levels (40 and 120 kg N ha(-1) yr(-1)) of N were applied in the subtropical plantation forest of southern China. Soil CH4 and N2O fluxes, the abundance and structure of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) communities were measured using static chamber-gas chromatography, quantitative PCR (qPCR), and terminal restriction fragment length polymorphism (T-RFLP). Nitrogen addition tended to inhibit soil CH4 uptake, but significantly promoted soil N2O emission; moreover, these impacts were more significant with NH4+ N than with NO3- - N addition. NH4CI addition significantly changed ammonia-oxidizer abundance with an increase in AOA and a decrease in AOB. Nitrogen additions significantly decreased the relative abundance of 329 bp and 421 bp of archaeal amoA gene. Negative relationships occurred between soil CH4 uptake and AOA abundance and between soil CH4 uptake and AOA/AOB ratio; however, a positive relationship was found between soil N2O emission and AOA abundance. These results indicate that a shift in abundance and composition of ammonia-oxidizing communities is closely linked to changes in soil CH4 Uptake and N2O emission under N enrichment. Furthermore, AOA communities play a contrasting role from AOB communities for regulating the fluctuation between soil CH4 and N2O fluxes. (C) 2016 Elsevier Masson SAS. All rights reserved.
Indexed BySCI
Language英语
ISSN1164-5563
DOI10.1016/j.ejsobi.2016.01.008
Citation statistics
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43281
Collection历年回溯文献
Recommended Citation
GB/T 7714
Wang Y. S.,Cheng, S. L.,Fang, H. J.,et al. Relationships between ammonia-oxidizing communities, soil methane uptake and nitrous oxide fluxes in a subtropical plantation soil with nitrogen enrichment. 2016.
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