Physicochemical Soil Properties Following Selective Cutting of Large-Diameter Trees in a Lowland Dry Evergreen Forest in Cambodia
JARQ : Japan Agricultural Research Quarterly
ISSN | 00213551 |
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書誌レコードID(総合目録DB) | AA0068709X |

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jarq58-4_215-232.pdf23.05 MB
Forest degradation often leads to soil degradation. To clarify the impacts of large-diameter tree cutting and in situ sawing operations on forest site characteristics, we investigated forest floor characteristics and soil physicochemical properties at sites where logging had already been performed of a lowland dry evergreen forest on sandy acrisol soil in central Cambodia. Transects were staked along the direction where individual trees had fallen after being felled approximately 10 years prior, and each transect was divided into five subplots (control, stump, timber, unused trunk, and crown) representing different sections of the fallen tree. A temporary supply of organic matter associated with cutting activity mitigated soil degradation; however, this effect was limited. Differences in soil physicochemical properties between the control subplots and the logging-affected subplots were particularly pronounced in the reduction of the concentrations of exchangeable bases (Ex·Ca2+ and Ex·Mg2+) and corresponding pH(H2O), although some soil properties were conserved (Ex·K+ and total N stock). These results suggested that a continuous supply of litter from standing trees was effective in mitigating soil degradation and that the preservation of pre-existing juvenile trees at cutting was essential for sustainable forest use. Our findings also indicated that sandy acrisol soils are vulnerable to disturbance from logging. Future research on forest restoration in degraded soils is needed.
刊行年月日 | |
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作成者 | Eriko ITO Bora TITH Borin TO Junko NAGAKURA |
著者キーワード | Acrisols Anisoptera costata Dipterocarpus costatus forest degradation soil degradation |
公開者 | Japan International Research Center for Agricultural Sciences |
受付日 | 2023-11-30 |
受理日 | 2024-02-07 |
オンライン掲載日 | |
巻 | 58 |
号 | 4 |
開始ページ | 215 |
終了ページ | 232 |
DOI | 10.6090/jarq.58.215 |
言語 | eng |