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| Short-term Nitrogen (N)-Retranslocation within Larix olgensis Seedlings is Driven to Increase by N-deposition: Evidence from a Simulated N-15 Experiment in Northeast China | |
| Wei, HX; Xu, CY; Ma, LY; Wang, WJ; Duan, J; Jiang, LN | |
| 2014 | |
| Source Publication | INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY
 |
| ISSN | 1560-8530 |
| Volume | 16Issue:6Pages:1031-1040 |
| Abstract | Urban areas are key sources of reactive atmospheric nitrogen (N). Urban forests are moving towards a state of "N-saturation" due to N-deposition. However, the possible future-trend of inherent N-cycling in trees in response to urbanization-related N-deposition is not well known. With regard to the contradiction of current studies on the exogenous N-addition on endogenous N-retranslocation (NR) in the month-or season-long term, we treated 15-month old Changbai larch (Larixo lgensis Henry.) seedlings with N-15-labeled ammonium sulfate supplied at rates of 0 (control), 30 (F30), 105 (F105), and 315 (F315) mg N-15 seedling(-1) to simulate N-deposition at the accumulatively future amounts driven by urbanization. Seedlings were harvested nine days after treatment to determine their response of NR. Results revealed that N-deposition had a significant short-term effect on N-derived from plant (NDFP) in needles, wherein NDFP rose with the increase of 15 N-deposition intensity. In fine root (in diameter of 0-1 mm) NDFP in the F315 treatment was statistically higher than that in other treatments. There was a mean amount of 1.26 mg of N-retranslocated into needles, which accounted for 19% of total N-content. Results in the present study, together with the other ones we summarized, could be concluded that short-term NR in Changbai larch tended to increase in response to urbanization-related N-deposition. (C) 2014 Friends Science Publishers |
| Keyword | Picea-mariana Seedlings Nutrient Retranslocation Temperate Forest Seasonal Growth Apple-trees Fine Roots Remobilization Storage Soil Decomposition |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/9117 |
| Collection | 文献共享 |
| Recommended Citation GB/T 7714 | Wei, HX,Xu, CY,Ma, LY,et al. Short-term Nitrogen (N)-Retranslocation within Larix olgensis Seedlings is Driven to Increase by N-deposition: Evidence from a Simulated N-15 Experiment in Northeast China[J]. INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY,2014,16(6):1031-1040. |
| APA | Wei, HX,Xu, CY,Ma, LY,Wang, WJ,Duan, J,&Jiang, LN.(2014).Short-term Nitrogen (N)-Retranslocation within Larix olgensis Seedlings is Driven to Increase by N-deposition: Evidence from a Simulated N-15 Experiment in Northeast China.INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY,16(6),1031-1040. |
| MLA | Wei, HX,et al."Short-term Nitrogen (N)-Retranslocation within Larix olgensis Seedlings is Driven to Increase by N-deposition: Evidence from a Simulated N-15 Experiment in Northeast China".INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY 16.6(2014):1031-1040. |
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