FIELD OBSERVATION AND NUMERICAL SIMULATION FOR SEDIMENT RUNOFF DUE TO LAND DEVELOPMENT IN NGERIKIIL WATERSHED, REPUBLIC OF PALAU
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- KUDO Masashi
- Graduate school of Agriculture, Utsunomiya University
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- OSAWA Kazutoshi
- Faculty of Agriculture, Utsunomiya University
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- KAN Kazutoshi
- Faculty of Engineering, Shibaura Institute of Technology
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- SATO Kotaro
- Graduate school of Engineering, Shibaura Institute of Technology
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- IKEDA Syunsuke
- CTI Engineering Co., Ltd.
Bibliographic Information
- Other Title
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- パラオ共和国ガリキル川流域での土地開発に伴う土砂流出の現地観測および解析
Abstract
Soil erosion and runoff have led to environmental problems in Babeldaob Island, Republic of Palau, and effective measures which can reduce sediment yield in the developing bare land are necessary. This paper aims to quantify the sediment runoff from land development zone in Ngerikiil watershed at southern part of Babeldaob Island. The following three points were clarified. First, field observed results showed that severe soil erosion at the land development zone affects the behavior of sediment movement in the watershed. Second, 556 t/ha/y of soil erosion at the developing bare land was estimated by using observed data. Third, the Water Erosion Prediction Project (WEPP) model was tested to verify their applicability in predicting sediment yield at a land development zone. The sediment yield which was calculated under various landform and landuse conditions was reasonable.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 69 (4), I_937-I_942, 2013
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390001205352160640
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- NII Article ID
- 130004558089
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- ISSN
- 2185467X
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed