Functional traits of poplar leaves and fine roots responses to ozone pollution under soil nitrogen addition
文献类型：期刊论文
| 作者 | Li, Pin; Yin, Rongbin ; Zhou, Huimin; Xu, Sheng; Feng, Zhaozhong
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| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2022-03 |
| 卷号 | 113期号:0页码:118-131 |
| ISSN号 | 1001-0742 |
| 关键词 | ELEVATED ATMOSPHERIC CO2 LITTER DECOMPOSITION LEAF-LITTER NUTRIENT RESORPTION TROPOSPHERIC O-3 TREMBLING ASPEN PHOSPHORUS RESORPTION ORGANIC-MATTER PLANT LITTER CHINA |
| 英文摘要 | Concurrent ground-level ozone (O 3 ) pollution and anthropogenic nitrogen (N) deposition can markedly influence dynamics and productivity in forests. Most studies evaluating the functional traits responses of rapid-turnover organs to O 3 have specifically examined leaves, despite fine roots are another major source of soil carbon and nutrient input in forest ecosystems. How elevated O 3 levels impact fine root biomass and biochemistry remains to be resolved. This study was to assess poplar leaf and fine root biomass and biochemistry responses to five different levels of O 3 pollution, while additionally examining whether four levels of soil N supplementation were sufficient to alter the impact of O 3 on these two organs. Elevated O 3 resulted in a more substantial reduction in fine root biomass than leaf biomass; relative to leaves, more biochemically-resistant components were present within fine root litter, which contained high concentrations of lignin, condensed tannins, and elevated C:N and lignin: N ratios that were associated with slower rates of litter decomposition. In contrast, leaves contained more labile components, including nonstructural carbohydrates and N, as well as a higher N:P ratio. Elevated O 3 significantly reduced labile components and increased biochemically-resistant components in leaves, whereas they had minimal impact on fine root biochemistry. This suggests that O 3 pollution has the potential to delay leaf litter decomposition and associated nutrient cycling. N addition largely failed to affect the impact of elevated O 3 levels on leaves or fine root chemistry, suggesting that soil N supplementation is not a suitable approach to combating the impact of O 3 pollution on key functional traits of poplars. These results indicate that the significant differences in the responses of leaves and fine roots to O 3 pollution will result in marked changes in the relative belowground roles of these two litter sources within forest ecosystems, and such changes will independently of nitrogen load. (c) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47262]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Li, Pin |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 2.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Inst Ecol, Key Lab Agrometeorol Jiangsu Prov, Nanjing 210044, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang 110016, Peoples R China 4.Beijing Forestry Univ, Res Ctr Urban Forestry,State Forestry Adm, Key Lab Forest Silviculture & Conservat,Minist Ed, Key Lab Silviculture & Forest Ecosyst Res Arid &, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Pin,Yin, Rongbin,Zhou, Huimin,et al. Functional traits of poplar leaves and fine roots responses to ozone pollution under soil nitrogen addition[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,113(0):118-131. |
| APA | Li, Pin,Yin, Rongbin,Zhou, Huimin,Xu, Sheng,&Feng, Zhaozhong.(2022).Functional traits of poplar leaves and fine roots responses to ozone pollution under soil nitrogen addition.JOURNAL OF ENVIRONMENTAL SCIENCES,113(0),118-131. |
| MLA | Li, Pin,et al."Functional traits of poplar leaves and fine roots responses to ozone pollution under soil nitrogen addition".JOURNAL OF ENVIRONMENTAL SCIENCES 113.0(2022):118-131. |
入库方式： OAI收割
来源：生态环境研究中心
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