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＜departmental bulletin paper＞
Water Quality Conservation in an Agricultural Pond using an Ecosystem Model and Scenario Analysis

Creator
Creator Name
Ix, Hour
Affiliation
Affiliation Name
Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
Author PID
K001582
Creator Name
Hiramatsu, Kazuaki
平松, 和昭
Affiliation
Affiliation Name
Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院
Author PID
K002875
Creator Name
Harada, Masayoshi
原田, 昌佳
Affiliation
Affiliation Name
Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院
Author PID
K001643
Creator Name
Mori, Makito
森, 牧人
Affiliation
Affiliation Name
Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院
Language
English
Publisher
Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院
Date
2007-10-29
Source Title
Journal of the Faculty of Agriculture, Kyushu University
Vol
52
Issue
2
First Page
423
Last Page
429
Publication Type
Version of Record
Access Rights
open access
Crossref DOI
https://doi.org/10.5109/9332
Related DOI
Journal of the Faculty of Agriculture, Kyushu University || 52(2) || p423-429
九州大学大学院農学研究院紀要 || 52(2) || p423-429
http://www.agr.kyushu-u.ac.jp/index.html
Related URI
Journal of the Faculty of Agriculture, Kyushu University || 52(2) || p423-429
九州大学大学院農学研究院紀要 || 52(2) || p423-429
http://www.agr.kyushu-u.ac.jp/index.html
Relation
Journal of the Faculty of Agriculture, Kyushu University || 52(2) || p423-429
九州大学大学院農学研究院紀要 || 52(2) || p423-429
http://www.agr.kyushu-u.ac.jp/index.html

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Details

PISSN
0023-6152
NCID
AA00697606
Record ID
9332
Peer-Reviewed
Unrefereed
Subject Terms
Geo-Environment Science
地水環境学
ISSN
0023-6152
NCID
AA00697606
Notes
To explicate the dynamics of nitrogen and phosphorus in an agricultural pond, numerical simulations were conducted for their temporal fluctuation in pond water by using an ecosystem model, and the developed model was applied to a scenario analysis for the improvement and preservation of water environment by the reduction of nitrogen and phosphorus. In this study, the model was composed of 5 water quality indices-nitrogen oxides, ammonia-nitrogen, organic nitrogen, phosphate-phosphorus and organic phosphorus- and was adapted to the Toishigawara agricultural pond in Fukuoka Prefecture, Japan, where concentrations of total nitrogen and total phosphorous were extraordinarily high. A comparison between the calculated results and the observed data showed that the ecosystem model used in this study could reproduce the dynamics of nitrogen and phosphorus in Toishigawara pond. According to the scenario analysis, 80% reduction of current nutrient inflow load resulted in the remarkable decrease of total nitrogen and total phosphorous concentrations. As a result, total nitrogen fulfilled the water quality standard of irrigation water in Japan.
Created Date 2009.04.22
Modified Date 2022.11.11

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