Influence of nitrogen fertilization on soil ammonia oxidizer and denitrifier abundance, microbial biomass, and enzyme activities in an alpine meadow
Tian, XF; Hu, HW; Ding, Q; Song, MH; Xu, XL; Zheng, Y; Guo, LD
2014
Source PublicationBIOLOGY AND FERTILITY OF SOILS
ISSN0178-2762
Volume50Issue:4Pages:703-713
AbstractTerrestrial ecosystems are predicted to experience an increasing level of atmospheric nitrogen (N) deposition, which may cause significant shifts in plant community composition and concomitantly stimulate soil acidification. However, little is known concerning the effects of N deposition on belowground microbial communities in alpine grassland ecosystems such as on the Tibetan Plateau. This study examined the responses of soil N-transforming microbes (measured after DNA extraction and quantitative PCR), soil microbial biomass C (SMBC) and N (SMBN), and soil enzyme activities to different forms (NH4 (+)-N, NO3 (-)-N, and NH4NO3-N) and rates (1.5 and 7.5 g N m(-2) year(-1), denoted as low and high N, respectively) of N fertilization (addition) in two successive plant growing seasons. The N rate, not N form, influenced the abundance of ammonia-oxidizing archaea (AOA). High N addition significantly increased ammonia-oxidizing bacteria (AOB) abundance which differed across different N form treatments. Nitrogen addition had no significant impact on the abundance of soil denitrifiers. The SMBC and SMBN were significantly decreased by high N additions, but no difference was found among different N forms. Despite higher urease activities being detected in the late plant growing season, the activities of invertase and alkaline phosphomonoesterase stayed unchanged irrespective of the different N amendments and plant growing season. Significant positive correlations were found between potential nitrification rates and AOB abundances. These results highlight that AOB seemed to respond more sensitively to different N fertilization and might have prominent roles in soil N cycling processes in this Tibetan Plateau alpine meadow than AOA.
SubtypeJournal
KeywordAmmonia-oxidizing microorganism Denitrifying bacteria Nitrogen deposition Quantitative PCR Soil enzyme activity Soil microbial biomass
Subject AreaAgriculture
WOS Subject ExtendedSoil Science
WOS KeywordLONG-TERM FERTILIZATION ; FOREST SOILS ; ORGANIC-MATTER ; COMMUNITY STRUCTURE ; BACTERIA ; ARCHAEA ; RESPONSES ; NITRIFICATION ; CYCLE ; DEPOSITION
Indexed BySCI
Language英语
WOS IDWOS:000334935000015
PublisherSPRINGER
Citation statistics
Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44551
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Tian, XF,Hu, HW,Ding, Q,et al. Influence of nitrogen fertilization on soil ammonia oxidizer and denitrifier abundance, microbial biomass, and enzyme activities in an alpine meadow[J]. BIOLOGY AND FERTILITY OF SOILS,2014,50(4):703-713.
APA Tian, XF.,Hu, HW.,Ding, Q.,Song, MH.,Xu, XL.,...&Guo, LD.(2014).Influence of nitrogen fertilization on soil ammonia oxidizer and denitrifier abundance, microbial biomass, and enzyme activities in an alpine meadow.BIOLOGY AND FERTILITY OF SOILS,50(4),703-713.
MLA Tian, XF,et al."Influence of nitrogen fertilization on soil ammonia oxidizer and denitrifier abundance, microbial biomass, and enzyme activities in an alpine meadow".BIOLOGY AND FERTILITY OF SOILS 50.4(2014):703-713.
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