Application of Water Quality Tank Model Classified by Land Use to Nitrogen Load Reduction Plans
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Accession number;03A0395297
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| Title;Application of Water Quality Tank Model Classified by Land Use to Nitrogen Load Reduction Plans |
| Author;
KATO TASUKU
(Ibaraki Univ., School of Agricuture, JPN)
KURODA HISAO
(Ibaraki Univ., School of Agricuture, JPN)
NAKASONE HIDEO
(Ibaraki Univ., School of Agricuture, JPN)
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Journal Title;Transactions of the Japanese Society of Irrigation, Drainage and Reclamation Engineering
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Journal Code:S0345A
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ISSN:0387-2335
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VOL.;NO.224;PAGE.237-243(2003)
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| Figure&Table&Reference;FIG.7, TBL.6, REF.10 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;In Kasumigaura basin, the reduction of nitrogen load has been one of important water quality conservation plans. In this paper, the authors focused on the Yamada River basin, one of Kasumigaura basin, which main land use is for agriculture as upland fields and stockbreeding. We developed a water quality tank model classified by land use for long-term simulation of the nitrogen effluent load, and compared the effect of nitrogen load reduction plan scenarios. The model included the database such as population, land use area, rain, fertilizer and stockbreeding, and represented the outflow process of nitrogen elution load and nitrogen storage load. Then the authors set out five nitrogen reduction scenarios; such as soils washing, use of slow effect fertilizer, fertilizer reduction, cleaning crop and stock waste reduction scenario, and considered the effect of each scenario. The model developed could compare and quantitatively show the effect of each nitrogen reduction plan scenarios for watershed management. (author abst.) |
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