RIVER WATER QUALITY ANALYSIS ON CHANGES IN DAIRY FARMING CONDITIONS AND ITS SURROUNDING ENVIRONMENT USING SWAT
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- TANAKA Kenji
- 土木研究所寒地土木研究所
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- UNOKI Keiji
- 土木研究所寒地土木研究所
Bibliographic Information
- Other Title
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- SWATによる酪農営農状況および周辺環境の変化に対する河川水質解析
Abstract
<p> The farming conditions in the large-scale dairy area of eastern Hokkaido are changing due to the implementation of an environmental conservation-type irrigation and drainage project and crop conversion following climate changes. Changes in the outflow routes of water pollutants and subsequent changes in nitrogen cycle are consequently predicted, and it is necessary to quantify the impact on the water quality environment in the entire basin scale. In this study, we applied SWAT, a semi-distributed model, to small-scale watershed, and analyzed river water quality assuming farming conditions in three periods, namely, the past, present, and near future. The results showed an increased nitrogen load of the surface flow due to the conversion from pasture to silage corn, but surface, lateral and groundwater flow could all be reduced by arranging project facilities in and around the converted farmland.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research)
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Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 78 (5), I_271-I_278, 2022
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390013397233629824
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- ISSN
- 21856648
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed