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Fine root dynamics and partitioning of root respiration into growth and maintenance components in cool temperate deciduous and evergreen forests
| Title: | Fine root dynamics and partitioning of root respiration into growth and maintenance components in cool temperate deciduous and evergreen forests |
| Authors: | Sun, Lifei Browse this author | | Hirano, Takashi Browse this author →KAKEN DB | | Yazaki, Tomotsugu Browse this author →KAKEN DB | | Teramoto, Munemasa Browse this author | | Liang, Naishen Browse this author |
| Keywords: | Biomass | | Chamber | | Ingrowth core | | Production | | Soil respiration | | Trenching |
| Issue Date: | Jan-2020 |
| Publisher: | Springer |
| Journal Title: | Plant and soil |
| Volume: | 446 |
| Issue: | 1-2 |
| Start Page: | 471 |
| End Page: | 486 |
| Publisher DOI: | 10.1007/s11104-019-04343-z |
| Abstract: | Aims: We aim to show the seasonality of fine root dynamics and examine the relationship between root respiration (Rr) and fine root dynamics. In addition, we try partitioning Rr into growth (Rg) and maintenance (Rm) components. Methods: Soil respiration (Rs), fine root biomass (B), and fine root production (P) were measured simultaneously over a growing season in adjoining deciduous (DF) and evergreen (EF) forests. The Rr was separated from Rs by the trenching method, and Rr was partitioned into Rg and Rm using an empirical model. Results: The seasonality of P was almost the same in both forests, though that of B was different. The Rr showed a positive correlation with P in both sites. Annual Rr was estimated to be 610 (DF) and 393 (EF) g C m⁻² year-¹. Annual Rg and Rm were 121 and 166 (DF), and 86 and 182 (EF) g C m⁻² year-¹, respectively. Conclusions We found a clear seasonal pattern in P and a positive linearity between Rr and P. Despite considerable uncertainty due to the small sample size, presence of larger roots, and measurement uncertainty, the results suggest that our approach is capable of partitioning Rr. |
| Rights: | This is a post-peer-review, pre-copyedit version of an article published in Plant and Soil. The final authenticated version is available online at: http://dx.doi.org/10.1007/s11104-019-04343-z |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/80115 |
| Appears in Collections: | 農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 平野 高司
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