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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Agriculture / Faculty of Agriculture >
Peer-reviewed Journal Articles, etc >
Source and Accumulation of Soil Carbon along Catena Toposequences over 12,000 Years in Three Semi-Natural Miscanthus sinensis Grasslands in Japan
| Title: | Source and Accumulation of Soil Carbon along Catena Toposequences over 12,000 Years in Three Semi-Natural Miscanthus sinensis Grasslands in Japan |
| Authors: | Howlett, David S. Browse this author | | Stewart, J. Ryan Browse this author | | Inoue, Jun Browse this author | | Saito, Masanori Browse this author | | Lee, DoKyoung Browse this author | | Wang, Hong Browse this author | | Yamada, Toshihiko Browse this author | | Nishiwaki, Aya Browse this author | | Fernandez, Fabian G. Browse this author | | Toma, Yo Browse this author →KAKEN DB |
| Keywords: | Miscanthus sinensis | | soil carbon | | catena | | radiocarbon dating | | C-4 grasses |
| Issue Date: | Jan-2022 |
| Publisher: | MDPI |
| Journal Title: | Agriculture |
| Volume: | 12 |
| Issue: | 1 |
| Start Page: | 88 |
| Publisher DOI: | 10.3390/agriculture12010088 |
| Abstract: | Miscanthus-dominated semi-natural grasslands in Japan appear to store considerable amounts of soil C. To estimate the long-term effect of Miscanthus vegetation on the accumulation of soil carbon by soil biota degradation in its native range, we measured total soil C from the surface to a 1.2 m depth along a catena toposequence in three annually burned grasslands in Japan: Kawatabi, Soni, and Aso. Soil C stock was estimated using a radiocarbon age and depth model, resulting in a net soil C accumulation rate in the soil. C-4-plant contribution to soil C accumulation was further estimated by delta C-13 of soil C. The range of total soil C varied among the sites (i.e., Kawatabi: 379-638 Mg, Soni: 249-484, and Aso: 372-408 Mg C ha(-1)). Catena position was a significant factor at Kawatabi and Soni, where the toe slope soil C accumulation exceeded that of the summit. The soil C accumulation rate of the whole horizon in the grasslands, derived C mainly from C-4 plant species, was 0.05 +/- 0.02 (Average +/- SE), 0.04 +/- 0.00, and 0.24 +/- 0.04 Mg C ha(-1) yr(-1) in Kawatabi, Soni, and Aso, respectively. Potential exists for long-term sequestration of C under M. sinensis, but the difference in the C accumulation rate can be influenced by the catena position and the amount of vegetation. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/84459 |
| 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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