Nitrogen competition between three dominant plant species and microbes in a temperate grassland
Ouyang, SN; Tian, YQ; Liu, QY; Zhang, L; Wang, RX; Xu, XL
2016
Source PublicationPLANT AND SOIL
ISSN0032-079X
Volume408Issue:01-02Pages:121-132
AbstractTo test the hypothesis that dominant plant species could acquire different nitrogen (N) forms over a spatial scale and they also have the ability to compete for available N with microbes. A short-term N-15 labeling experiment was conducted in the temperate grassland ecosystem of North China in July of 2013. Three N forms (NO3 (-) (,) NH4 (+) and glycine) labeled with N-15 were injected into the two soil depths (0-5 and 5-15 cm) surrounding each plant to explore N acquisition by plants and microbes. Three dominant plant species (Artemisia frigida, Cleistogenes squarrosa and Artemisia capillaris) were investigated. Two hours after N-15 labeling, all three dominant plant species absorbed both organic and inorganic N, but different patterns were observed at two soil depths. Uptake of NO3 (-) was significantly higher at 0-5 cm than at 5-15 cm soil depth among all the dominant plant species. N-15 recovery by microbes was significantly higher than plants. However, N-15 recovery by plants showed different patterns over soil depths. Dominant plant species in the temperate grassland have different patterns in acquisition of N added to soil in organic form and absorption of inorganic N, and microbes were more effectively than plants at competing for N in a short-term period.
SubtypeJournal
KeywordInorganic N Microbes N-15 Root N uptake Temperate grassland
Subject AreaAgriculture ; Plant Sciences
WOS Subject ExtendedAgronomy ; Plant Sciences ; Soil Science
WOS KeywordAMINO-ACIDS ; SOIL-MICROORGANISMS ; ORGANIC-NITROGEN ; INORGANIC NITROGEN ; ALPINE MEADOW ; N FORMS ; ACQUISITION ; ECOSYSTEM ; TUNDRA ; ROOTS
Indexed BySCI
Language英语
WOS IDWOS:000386787000009
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44165
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
Ouyang, SN,Tian, YQ,Liu, QY,et al. Nitrogen competition between three dominant plant species and microbes in a temperate grassland[J]. PLANT AND SOIL,2016,408(01-02):121-132.
APA Ouyang, SN,Tian, YQ,Liu, QY,Zhang, L,Wang, RX,&Xu, XL.(2016).Nitrogen competition between three dominant plant species and microbes in a temperate grassland.PLANT AND SOIL,408(01-02),121-132.
MLA Ouyang, SN,et al."Nitrogen competition between three dominant plant species and microbes in a temperate grassland".PLANT AND SOIL 408.01-02(2016):121-132.
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