Short-term effects of different thinning methods on surface soil erosion of a hinoki (<i>Chamaecyparis obtusa</i>) plantation.
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- Mizokuchi Takuro
- Graduate School of Agriculture, University of Miyazaki
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- Ito Satoshi
- Faculty of Agriculture, University of Miyazaki
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- Yamagishi Kiwamu
- Faculty of Agriculture, University of Miyazaki
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- Hirata Ryoko
- Faculty of Agriculture, University of Miyazaki
Bibliographic Information
- Other Title
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- 間伐方法の違いが表土流出に及ぼす短期的影響
- カンバツ ホウホウ ノ チガイ ガ ヒョウド リュウシュツ ニ オヨボス タンキテキ エイキョウ
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Abstract
We investigated sediment transport rates during 9 months after line and ordinary thinning (scattered tree selection) of 49 years old hinoki (Chamaecyparis obtusa) plantation in order to examine the effects of different thinning practices on surface soil erosion. In the line-thinning site, drastic increase of sediment transport rates was observed immediately after thinning practices at skidding traces, probably due to the low infiltration rate of the surface soil disturbed by repeated skidding. However, the sediment transport rate at skidding traces decreased three months after thinning practices. This might be because unstable sediments were run off by heavy precipitation during the first summer. In the ordinary thinning site, sediment transport rates did not increase significantly after thinning practices, showing lower values compared to those at the logged lines and the skidding traces in the line-thinning site. These results suggested that the ordinary thinning has lower impacts on surface soils, and that the line thinning which promotes aggregated soil erosion should be avoided at the sites of high erosion risks such as steep slopes or volcanic ash deposits for surface soil conservation.
Journal
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- Japanese Journal of Forest Environment
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Japanese Journal of Forest Environment 60 (1), 23-29, 2018-06-25
The Japanese Society of Forest Environment
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Details 詳細情報について
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- CRID
- 1390001288044769664
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- NII Article ID
- 130007402299
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- NII Book ID
- AN00124077
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- ISSN
- 21896275
- 03888673
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- NDL BIB ID
- 029198897
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- Text Lang
- ja
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed