Nitrogen competition between three dominant plant species and microbes in a temperate grassland
文献类型：SCI/SSCI论文
| 作者 | Ouyang S. N.; Tian, Y. Q.; Liu, Q. Y.; Zhang, L.; Wang, R. X.; Xu, X. L. |
| 发表日期 | 2016 |
| 关键词 | Inorganic N Microbes N-15 Root N uptake Temperate grassland amino-acids soil-microorganisms organic-nitrogen inorganic nitrogen alpine meadow n forms acquisition ecosystem tundra roots |
| 英文摘要 | To 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. |
| 出处 | Plant and Soil |
| 卷 | 408 |
| 期 | 1-2 |
| 页 | 121-132 |
| 语种 | 英语 |
| ISSN号 | 0032-079X |
| DOI标识 | 10.1007/s11104-016-2904-3 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43155]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Ouyang S. N.,Tian, Y. Q.,Liu, Q. Y.,et al. Nitrogen competition between three dominant plant species and microbes in a temperate grassland. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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