Interactive effects of ozone exposure and nitrogen addition on tree root traits and biomass allocation pattern: An experimental case study and a literature meta-analysis.

Clicks: 290
ID: 79763
2020
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Steady

Ranked #345 of 637 articles by views in The Science of the total environment

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 637 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Ground-level ozone (O) pollution often co-occurs with anthropogenic nitrogen (N) deposition. Many studies have explored how O and soil N affect aboveground structure and function of trees, but it remains unclear how belowground processes change over a spectrum of N addition and O concentrations levels. Here, we explored the interactive impact of O (five levels) and soil N (four levels) on fine and coarse root biomass and biomass allocation pattern in poplar clone 107 (Populus euramericana cv. '74/76'). We then evaluated the modifying effects of N on the responses of tree root biomass to O via a synthesis of published literature. Elevated O inhibited while N addition stimulated root biomass, with more pronounced effects on fine roots than on coarse root. The root:shoot (R:S) ratio was markedly decreased by N addition but remained unaffected by O. No interactive effects between O and N were observed on root biomass and R:S ratio. The slope of log-log linear relationship between shoot and root biomass (i.e. scaling exponent) was increased by N, but not significantly affected by O. The analysis of published literature further revealed that the O-induced reduction in tree root biomass was not modified by soil N. The results suggest that higher N addition levels enhance faster allocation of shoot biomass while shoot biomass scales isometrically with root biomass across multiple O levels. N addition does not markedly alter the sensitivity of root biomass of trees to O. These findings highlight that the biomass allocation exhibits a differential response to environmentally realistic levels of O and N, and provide an important perspective for understanding and predicting net primary productivity and carbon dynamics in O-polluted and N-enriched environments.
Reference Key
li2020interactivethe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Li, Pin;Yin, Rongbin;Shang, Bo;Agathokleous, Evgenios;Zhou, Huimin;Feng, Zhaozhong;
Journal The Science of the total environment
Year 2020
DOI
S0048-9697(19)36375-2
URL
Keywords
ozone root biomass isometric allocation nitrogen addition optimal partitioning root:shoot ratio

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.