Exogenous N addition enhances the responses of gross primary productivity to individual precipitation events in a temperate grassland
Guo, Q; Hu, ZM; Li, SG; Yu, GR; Sun, XM; Li, LH; Liang, NS; Bai, WM
2016
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume6Pages:-
AbstractPredicted future shifts in the magnitude and frequency (larger but fewer) of precipitation events and enhanced nitrogen (N) deposition may interact to affect grassland productivity, but the effects of N enrichment on the productivity response to individual precipitation events remain unclear. In this study, we quantified the effects of N addition on the response patterns of gross primary productivity (GPP) to individual precipitation events of different sizes (P-size) in a temperate grassland in China. The results showed that N enrichment significantly increased the time-integrated amount of GPP in response to an individual precipitation event (GPP(total)), and the N-induced stimulation of GPP increased with increasing Psize. N enrichment rarely affected the duration of the GPP response, but it significantly stimulated the maximum absolute GPP response. Higher foliar N content might play an important role in the N-induced stimulation of GPP. GPPtotal in both the N-addition and control treatments increased linearly with Psize with similar Psize intercepts (approximately 5 mm, indicating a similar lower Psize threshold to stimulate the GPP response) but had a steeper slope under N addition. Our work indicates that the projected larger precipitation events will stimulate grassland productivity, and this stimulation might be amplified by increasing N deposition.
SubtypeJournal
Subject AreaScience & Technology - Other Topics
WOS Subject ExtendedMultidisciplinary Sciences
WOS KeywordRAIN-USE EFFICIENCY ; NITROGEN ADDITION ; INNER-MONGOLIA ; SOIL RESPIRATION ; PLANT-RESPONSES ; ECOSYSTEM ; WATER ; PULSES ; CLIMATE ; CARBON
Indexed BySCI
Language英语
WOS IDWOS:000377071800001
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44226
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
Guo, Q,Hu, ZM,Li, SG,et al. Exogenous N addition enhances the responses of gross primary productivity to individual precipitation events in a temperate grassland[J]. SCIENTIFIC REPORTS,2016,6:-.
APA Guo, Q.,Hu, ZM.,Li, SG.,Yu, GR.,Sun, XM.,...&Bai, WM.(2016).Exogenous N addition enhances the responses of gross primary productivity to individual precipitation events in a temperate grassland.SCIENTIFIC REPORTS,6,-.
MLA Guo, Q,et al."Exogenous N addition enhances the responses of gross primary productivity to individual precipitation events in a temperate grassland".SCIENTIFIC REPORTS 6(2016):-.
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