農村工学研究所

水環境

担当分野概要

農村地域の水環境を保全するため,農地と農業水利システムにおける微量物質の移動過程の解明,水質保全機能を持続的に発揮させる汚濁負荷削減技術の開発を行っています。

mizukankyo1

 

 

農地における微量物質の動態解明

 

 

 

 

mizukankyo2

 

 

クリーク地帯における水質浄化技術の開発

 

 

 

 

スタッフ

上席研究員 久保田富次郎
Tel:029-838-7545

水環境のモデリング,農業用水の水質管理基準.
主任研究員 濵田 康治 Tel:029-838-7546 微生物の水質浄化への利用技術.再生水の農業利用技術.
研究員 人見 忠良 Tel:029-838-7546 農業地帯における重金属の動態解明.

 

研究課題名

1) 水田の営農活動に伴う重金属の流出特性の解明 平成21~23年度
2) 気候変動に対応した水利システムの水温及び水質の評価管理手法の開発 平成21~23年度
3) 地区内排水の循環利用による農業用水の水質管理手法の開発 (平成22~24年度)
4) 農業水利システム内での指標微生物の挙動と影響因子の解明 (平成23~25年度)
5) 水位変動の大きい農業用貯水池の3次元生態系モデルの開発 (平成23~25年度)
6) 代掻き後の強制落水による表層土除去と土砂の捕捉 (科学技術戦略推進費:平成23年度)

 

研究成果 (2001年以降)

【学術論文】

1) Hamada K, Miura A., Fujita M., Hitomi T. and Shiratani E. (2010): Evaluation of the characteristics of microorganisms that contribute to denitrification in the paddy drainage treatment apparatus by quinone composition measurement. Journal of Water Environmental Technology, 8(4): 421-427.
2) 白谷栄作(2010):干拓の意義と水環境に関する課題.水環境学会誌,33(9):282-286.
3) 3) Shiratani E., Munakata Y., Yoshinaga I., Kubota T., Hamada K. and Hitomi T. (2010): Scenario analysis for reduction of pollutant load discharged from a watershed by recycling of treated water for irrigation. Journal of Environmental Sciences, 22(6): 878-884.
4) Hitomi T., Iwamoto Y., Miura A., Hamada K., Takaki K. and Shiratani E. (2010): Water-saving irrigation of paddy field to reduce nutrient runoff. Journal of Environmental Sciences, 22(6): 885-891.
5) Miura A., Shiratani E., Hamada K., Hitomi T. and Kubota T. (2010): Control of cadmium accumulation in topsoil and crops from contaminated farmland. Desalination and Water Treatment, 19: 226-231.
6) 白谷栄作・久保田富次郎(2010):農業用水の水質管理に関する問題点と課題.農業農村工学会誌,78(2):31-34
7) 久保田富次郎・人見忠良・濵田康治・白谷栄作・三重野俊彦・塩濵圭治(2009):水田土壌を対象とした動電学的手法による重金属除去試験.農村工学研究所技報,210:83-99.
8) 濵田康治・藤田昌史・人見忠良・久保田富次郎・白谷栄作(2009):農業排水を対象とした水質浄化装置内での脱窒反応とキノン組成の関係.農村工学研究所技報,210:101-109.
9) 人見忠良・久保田富次郎・三重野俊彦・塩濵圭治・濵田康治・白谷栄作(2009):簡易室内試験による汚染農地土壌への動電学的手法の適用性評価法.農業農村工学会論文集,263,119-120.
10) 人見忠良・三浦麻・濵田康治・吉永育生・久保田富次郎・白谷栄作(2009):水田排水中のTOC濃度とCODMnの関係について.農業農村工学会論文集,261,95-96.
11) 濵田康治・小松一弘・久保田富次郎・人見忠良・白谷栄作・髙木強治(2009):湛水開始時における水田土壌浸透水中の溶存態有機物の挙動.農業農村工学会論文集,260,121-122.
12) Miura A., Shiratani E., Hamada K., Hitomi T., Yoshinaga I. and Kubota T. (2009): Removal of nutrients, organic matter and heavy metals from paddy field drainage by charcoal. Journal of Water and Environment Technology, 7(1), 9-17.
13) 濱田浩正・吉永育生・濵田康治(2009):東北タイにおけるため池の水位と電気伝導度の期別変化.農業農村工学会誌,77(1),25-28.
14) 井上敬資・中里裕臣・久保田富次郎・竹内睦雄・古江広司(2008):複数測線データの2次元差トモグラフィ解析による土壌水動態の準3次元的モニタリング.物理探査,61(4),313-321.
15) 山岡 賢・柚山義人・中村真人・人見忠良(2008):消化液脱水ろ液の蒸留液中のアンモニアの固定化.農業農村工学論文集,256,63-64.
16) Shiratani E., Kiri H., Shimokawa H., Yokoyama Y. and Nakashima T. (2008): Estimation of the impact of particulate organic matter drained from a freshwater reservoir on the sea using diatom tracking. Water Science and Technology, 58(11), 109-115.
17) 桐 博英・白谷栄作・丹治 肇(2008):気泡関数要素を用いた有明海潮流の有限要素解析.海岸工学論文集,55,376-380.
18) Hamada K., Yoshinaga I., Hitomi T., Miura A. and Takaki K. (2008): Heavy metal loads accompanying rainfall runoff on low farmland around Ariake Bay, Japan. Japan Agricultural Research Quarterly, 42(4), 275-283.
19) Shiratani E., Kiri H. and Tanji H. (2008): Economic valuation of the agricultural impact on nitrogen in the water environment by a newly proposed replacement cost method. Japan Agricultural Research Quarterly, 42(4), 285-289.
20) Yoshida T., Masumoto T., Kubota T. and Matsuda S. (2008): Water balance characteristics of Kashima plateau basins assuming variable areas of underground catchments. Paddy and Water Environment, 6(2), 189-198.
21) 久保田富次郎・三浦 理・髙木強治・松森堅治(2008):井戸調査と地質資料からみた恋瀬川流域の水理地質と地下水環境.農村工学研究所技報,207,35-52.
22) 人見忠良・吉永育生・三浦麻・濵田康治・髙木強治(2008):小流域の水田灌漑ブロックにおける農業排水路中のZn濃度の変化.農村工学研究所技報,207,53-62.
23) 濵田康治・皆川明子・髙木強治・中 達雄(2008):有明海沿岸クリーク地帯でのクリーク水質の年間変動および年次変動の解明.農村工学研究所技報,207,63-80.
24) Fukuyama T., Kihou N., Fujiwara H., Nakashima M. and Shiratani E. (2008): Sedimentation process in Ariake Bay using NAA and gamma-spectrometry. Radioanalytical and Nuclear Chemistry, 278(2), 327-330.
25) Miura A., Shiratani E., Yoshinaga I., Hitomi T., Hamada K. and Takaki K. (2008): Evaluation of quantitative determination of dissolved organic matter adsorption process using charcoals and activated carbon. Japan Agricultural Research Quarterly, 42(1), 49-56.
26) 濵田康治・吉永育生・人見忠良・三浦 麻・髙木強治(2007):有明海沿岸クリーク地帯に位置する農地ブロックからの重金属負荷.環境工学研究論文集,44,391-396.
27) 白谷栄作・髙木強治・桐博英・濱田康治・丹治肇・中田喜三郎(2007):有明海の潮汐および潮流の変化とその要因に関する考察.農業土木学会論文集,252,145-156.
28) 吉永育生・濱田浩正(2007):東北タイの塩類集積地帯における表層水と地下水の水質環境.水環境学会誌,30(11),637-642.
29) 人見忠良・吉永育生・三浦麻・濵田康治・白谷栄作・髙木強治(2007):水田におけるDOMおよび疎水性酸画分の流出実態.農業農村工学会論文集,250,73-81.
30) 三浦麻・白谷栄作・人見忠良・吉永育生・髙木強治・濵田康治(2007):スギ再資源炭による難分解性有機物除去特性.水環境学会誌,30(1),39-44.
31) Shiratani E., Takaki K., Kiri H., Hamada K., Tanji H., Nakata K., Kaneko T. and Muraoka Y. (2007): Effects of current meter tilting on current observation. Advanced Marine Science and Technology, 31(1), 13-20.
32) Hamada K., Yoshinaga I., Hitomi T., Miura A., Shiratani E. and Takaki K. (2007): Surface discharge of heavy metals from low farmland. Water Science and Technology, 56(1), 99-104.
33) Miura A., Shiratani E., Yoshinaga I., Hitomi T., Hamada K. and Takaki K. (2007): Characteristics of the adsorption of dissolved organic matter by charcoals carbonized at different temperatures. Japan Agricultural Research Quarterly, 41(3), 211-217.
34) Shiratani E., Yoshinaga I. and Miura A. (2006): Economic valuation of cultivated lands as nitrogen removal/effusion sites by newly proposed replacement cost method. Paddy & Water Environment, 4(4), 211-215.
35) 宗像義之・白谷栄作・高橋順二・長谷部均・吉永育生・三浦麻・人見忠良(2006):農業水利の影響解析のための分布定数型水文水質モデルの開発.水環境学会誌,29(12),815-822.
36) Yoshinaga I., Hitomi T., Miura A., Shiratani E. and Miyazaki T. (2006): Cyanobacterium Microcystis bloom in a eutrophicated regulating reservoir. Japan Agricultural Research Quarterly, 40(3), 283-289.
37) Hamada K., Kuba T., Torrico V., Okazaki M. and Kusuda T. (2006): Comparison of nutrient removal efficiency between pre- and post-denitrification wastewater treatment. Water Science and Technology, 53(9), 169-175.
38) Yoshinaga I., Miura A., Hitomi T., Hamada K. and Shiratani E. (2006): Runoff nitrogen from a large sized paddy field during a crop period. Agricultural Water Management, 87(2), 217-222.
39) Takaki K., Shioda K., Arulvijitskul P., Koontannakulvong S., Horikawa N., Punyachom A. and Buddhapalit A. (2006): Towards Modernization of Water Management System in Upper East Bank of Chao Phraya Delta. Technical Report of the National Institute for Rural Engineering, 204, 233-252.
40) Hitomi T., Yoshinaga I., Feng Y. W. and Shiratani E. (2006): Nitrogen Removal Function of Recycling Irrigation System. Water Science and Technology, 53(2), 101-109.
41) Feng Y. W., Shiratani E., Yoshinaga I. and Hitomi T. (2006): Economic Valuation of Reduction in Nitrogen Outflow from a Paddy Field Area Equipped with a Recycling Irrigation Facility. Water Science and Technology, 53(2), 147-153.
42) Yoshinaga I., Kiri H., Hitomi T. and Shiratani E. (2005): Three-dimensional Numerical Simulation for Phytoplankton Blooms in a Eutrophicated Irrigation Reservoir. Journal of Agricultural Meteorology, 60(5), 365-370.
43) Shiratani E., Kubota T., Yoshinaga I. and Hitomi T. (2005): Effect of Agriculture on Nitrogen Flow in the Coastal Water Environment at the Ariake Bay, Japan. Ecology & Civil Engineering, 8(1), 73-81.
44) 安岡澄人・畑恭子・芳川忍・中野拓治・白谷栄作・中田喜三郎(2005):有明海の泥質干潟・浅海域での窒素循環の定量化-泥質干潟域の浮遊系-底生系結合生態系モデルの開発-.海洋理工学会誌,11(1),19-31.
45) 安岡澄人・石川知樹・中野拓治・白谷栄作・中田喜三郎(2005):有明海の泥質干潟・浅海域での窒素循環の定量化-泥質干潟域の浮遊系-塩田川・鹿島川河口域における現地調査及び室内試験結果-.海洋理工学会誌,11(1),54-61.
46) Shiratani E., Yoshinaga I. and Singh R. K. (2005): Model Analysis for Nitrogen Effluent from Upland Field Constructed with Under-drain. Water Science and Technology, 51(3-4), 91-98.
47) Feng Y. W., Yoshinaga I., Shiratani E., Hitomi T. and Hasebe T. (2005): Nutrient Balance in a Paddy Field with a Recycling Irrigation System. Water Science and Technology, 51(3-4), 151-157.
48) 白谷栄作・吉永育生・人見忠良・三浦麻(2005):農地排出負荷削減のモデル分析.土壌物理学会誌,99,13-20.
49) Yoshinaga I., Feng Y. W., Singh R. K. and Shiratani E. (2004): Dissolved Nitrogen Model for Paddy Field Ponded Water during Irrigation Period. Paddy & Water Environment, 2(3), 145-152.
50) 長谷部均・吉永育生・仲平四郎・十河潔司(2004):農業用ため池のアオコ抑制システムの開発.農業土木学会誌,72(7),587-591.
51) 白谷栄作・吉永育生・馮 延文・人見忠良(2004):代替法による農地の窒素除去/汚濁機能の経済評価の試み.水環境学会誌,27(7),491-494.
52) 石岡義則・吉野邦彦・白谷栄作・石川雅也(2004):土地利用別メッシュタンクモデルを用いた湿原流域降雨流出解析.水文・水資源学会誌,17(3),233-240.
53) Shiratani E., Yoshinaga I., Feng Y. W. and Hasebe H. (2004): Scenario Analysis for Reduction of Effluent Load from an Agricultural Area by Recycling the Run-off Water. Water Science and Technology, 49(3), 55-62.
54) 吉永育生・白谷栄作・長谷部均・馮延文・人見忠良(2004):農業用調整池のクロロフィルa,CODMn及び栄養塩類濃度の季節変動特性.水環境学会誌,27(2),137-142.
55) 平松和昭・白谷栄作・四ヶ所四男美(2004):生態系モデルによる低平地水田地帯のクリーク水質解析.九州大学大学院農学研究院学芸雑誌,59(2),153-164.
56) Feng Y. W., Yoshinaga I., Shiratani E., Hitomi T. and Hasebe H. (2004): Characteristics and Behavior of nutrients in a Paddy Field Area Equipped with a Recycling Irrigation System. Agricultural Water Management, 68(1), 47-60.
57) 長谷部均・吉永育生・馮延文・小山純(2003):ヘチマの植栽水路における水質浄化機能について.農業工学研究所技報,201,157-163.
58) Shiratani E., Shiofuku T., Kubota T., Yoshinaga I. and Hasebe H. (2002): Estimation of Nutrient Elution and Removal on Sediment Surface of Clayey Canal Based on Hydraulic Model Experiments. Japan Agricultural Research Quarterly, 36(4), 195-200.
59) 吉永育生・白谷栄作・長谷部均(2002):調整池の水質環境の季節変化.農業工学研究所技報,200,53-62.
60) 長谷部均・白谷栄作・吉永育生(2002):広域的な水田地帯の水質浄化機能について.農業工学研究所技報,200,97-105.
61) 長谷部均・白谷栄作・吉永育生(2002):水田主体の農村地域における水質変動について.農業土木学会誌,70(2),141-146.
62) Takahashi J., Yoshinaga I., Hasebe H. and Shiratani E. (2002): Effect of Hydrological Factors on the Estimation of Storm Runoff Loading in a Large River Watershed. Japan Agricultural Research Quarterly, 36(1). 37-44.
63) 白谷栄作・久保田富次郎・吉永育生・長谷部均(2001):農業用ため池の灌漑期の窒素濃度予測モデルと水質保全対策の効果評価.水環境学会誌,24(8),527-533.
64) 白谷栄作・高橋順二・小川吉雄・浅井 誠(2001):スロヴァキア国ザーホラスカ低地の土地改良の現状と課題.農業土木学会誌,69(6),627-631.
65) 白谷栄作・吉永育生・長谷部均(2001):Vollenweider型モデルによる農業用ため池の窒素濃度予測手法の開発.農業工学研究所技報,199,49-59.
66) 吉永育生・白谷栄作・桐博英・長谷部均 (2001):ダム湖を対象とした水温による密度流を考慮した三次元流れ解析.農業工学研究所技報,199,71-82.

 

【国際会議】

1) Shiratani E. (2010): Sustainable agriculture to conserve water environment in Japan. Proc. of 1st Thailand INWEPF Symposium, 17 June 2010, Bangkok
2) Miura A., Shiratani E., Hamada K., Hitomi T. and Kubota T. (2009): Cadmium Accumulation Control in Topsoil and Crops in Contaminated Farmland. Proc. of 13th International Specialized Conference on Diffuse Pollution and Integrated Watershed.
3) Hamada K., Miura A., Fujita M., Hitomi T., Kubota T. and Shiratani E. (2009): Comparison between Denitrification and Periphyton on the Surface of Charcoal Utilizing for Water Treatment. Proc. of 13th International Specialized Conference on Diffuse Pollution and Integrated Watershed.
4) Hitomi T., Iwamoto Y., Miura A., Hamada K., Takaki K. and Shiratani E. (2009): Water-Saving Irrigation of Paddy Field to Reduce Nutrient Runoff. Proc. of 13th International Specialized Conference on Diffuse Pollution and Integrated Watershed.
5) Shiratani E., Munakata Y., Yoshinaga I., Kubota T., Hamada K. and Hitomi T. (2009): Scenario Analysis for Reduction of Pollutant Load Discharged from a Watershed by Recycling of Treated Water for Irrigation. Proc. of 12th International Conference on Integrated Diffuse Pollution Management.
6) Kubota T., Miura H., Takaki K. and Matsumori K. (2008): Nitrogen Contamination and its Movement in the Koise river basin, Ibaraki, Japan. Proc. of 36th Integrating Groundwater Science and Human Well-being Congress.
7) Shiratani E., Kiri H., Shimokawa H., Yokoyama Y. and Nakashima M. (2008): Estimation of the Impact of Particulate Organic Matter Drained from a Freshwater Reservoir on the Sea Using Diatom Tracking. Proc. of 12th International Conference on Integrated Diffuse Pollution Management.
8) Hamada K., Yoshinaga I., Hitomi T., Kubota T. and Takaki K. (2008): Effect of Rainfall on Nutrient Loads from Low-lying Farmland. Proc. of 12th International Conference on Integrated Diffuse Pollution Management.
9) Yoshinaga I., Sumi H., Kubota T., Haraguchi N. and Ikoma H. (2008): Water Quality Environment of Ponds and Groundwater in Subtropical Island. Proc. of 12th International Conference on Integrated Diffuse Pollution Management.
10) Miura A., Shiratani E., Yoshinaga I., Hitomi T., Hamada K. and Takaki K. (2007): Application of Charcoal as a Water Treatment Material into Paddy Field Drainage Water. 11th International Conference on Diffuse Pollution & the 1st Joint Meeting of the IWA Diffuse Pollution and Urban Drainage Specialist of the IWA Diffuse Groups.
11) Shiratani E. (2007): Environmentally-sound agriculture to supply safe foods. Proc. of INWEPF and ICID WG-SDTA Joint Workshop, 1-3 July 2010, Ansan, Korea.
12) Hamada K., Yoshinaga I., Takaki K., Hitomi T. and Miura A. (2007): Effect of draining a pond dry on oxygen consumption rate at the surface of pond sediment. Proc. of 2nd IWA Asia-Pacific Regional Group Conference & Exhibition, P122.
13) Yoshinaga I., Hamada K., Hitomi T., Miura A. and Takaki K. (2007): Effects of Bottom Soil Management on Phosphorus Release Rate in a Eutrophicated Irrigation Reservoir. Proc. of 2nd IWA Asia-Pacific Regional Group Conference & Exhibition.
14) Shiratani E., Yoshinaga I. and Hitomi T. (2006): Economic Valuation of the Agricultural Impact on Nitrogen in the Water Environment by a Newly Proposed Replacement Cost Method. IWA World Water Congress and Exhibition.
15) Yoshinaga I., Hamada K., Hitomi T., Miura A., Shiratani E. and Takaki K. (2006): Runoff of Nutrients and Organic Matter from a Rice-soybean Field in Summer. Proc. of 10th International Specialized Conference on Diffuse Pollution and Sustainable Basin Management, C-172.
16) Miura A., Shiratani E., Hitomi T., Yoshinaga I. and Feng Y.W. (2005): Dissolved Organic Matter Adsorption Characteristics of Charcoals. The 3rd IWA Leading Edge Conference and Exhibition on Water and Wastewater Treatment.
17) Hitomi T., Yoshinaga I., Feng Y. W. and Shiratani E. (2004): Nitrogen Removal Function of Recycling Irrigation System. Proc. of 8th International Conference on Diffuse/Nonpoint Pollution, 793-800.
18) Feng Y.W., Shiratani E., Yoshinaga I. and Hitomi T. (2004): Economic Valuation of Reductions in Nitrogen Outflow from a Paddy Field Area Equipped with a Recycling Irrigation Facility. Proc. of 8th International Conference on Diffuse/Nonpoint Pollution, 837-843.
19) Shiratani E. (2004): Agricultural Technology and Policy for Sustainable Agriculture in Japan. International Workshop on Eco-friendly Agricultural Technology and Policy, 8th ICDP Proc. of 8th International Conference on Diffuse/Nonpoint Pollution.
20) Singh R.K., Shiratani E., Yoshinaga I. and Mukai A. (2004): Optimum Land Use with Respect to Multifunctional Roles and Nutrient Export of Irrigation Ponds Catchment in Japan. Proc. of International Conference on Construction Environment & Manufacturing Systems, 127-135.
21) Feng, Y.W., Yoshinaga I., Shiratani E., Hitomi T. and Hasebe H. (2003): Nutrient Balance in a Paddy Field with a Recycling Irrigation System. Proc. of 7th International Conference on Diffuse Pollution & Basin Management, 4, 34-39.
22) Yoshinaga I., Feng Y. W., Hitomi T., Shiratani E. and Hasebe H. (2003): Nitrogen Removal Function of a Paddy Field in a Circular Irrigation System. Proc. of 7th International Conference on Diffuse Pollution & Basin Management, 4, 43-48.
23) Shiratani E., Yoshinaga I. and Singh R. K. (2003): Model Analysis for Nitrogen Effluent from Upland Field Constructed with Under-drain. Proc. of 7th International Conference on Diffuse Pollution & Basin Management, 3, 100-106.
24) Singh R. K., Shiratani E., Yoshinaga I. and Hasebe H. (2003): Optimisation Models for Reduction of Effluent Load from Paddy Field by Recycling Use of Water. Proc. of 7th International Conference on Diffuse Pollution & Basin Management, 3, 119-124.
25) Yoshinaga I., Shiratani E., Feng Y. W., Hasebe H. and Miyazaki T. (2002): Modeling of Vertical Transport and Mixing of Phytoplankton in the Diurnal Surface Layer. Proc. of 5th International Conference on Hydro-Science & Engineering, CD-ROM.
26) Shiratani E., Yoshinaga I., Feng Y. W. and Hasebe H. (2002): Water-Environmentally Conservational Agriculture in Reclaimed Land. Proc. of International Workshop on Sustainable Development of Tidal Areas, 18th ICID, 1-8.
27) Shiratani E., Yoshinaga I., Feng Y. W. and Hasebe H. (2002): Scenario Analysis for Reduction of Effluent Load from Agricultural Area by Recycling Use of the Drained Water. Proc. of 6th International Conference on Diffuse Pollution, 331-338.
28) Yoshinaga I., Shiratani E., Hasebe H. and Miyazaki T. (2001): A Three-dimensional Model for Flow, Water Temperature and Chlorophyll in a Temperate Eutrophic Irrigation Reservoir in Japan. Proc. of 3rd International Symposium an Environmental Hydraulics, CD-ROM.

 

【商業誌】

1) 白谷栄作・桐博英・丹治肇(2007):有明海の潮流の変化はどこまで解明されたのか.海洋と生物,173,537-543.
2) 吉永育生・人見忠良・三浦麻・濵田康治・髙木強治(2007):農業用調整池におけるアオコの発生とその環境条件について.農業技術,62(8),358-361.
3) 人見忠良・吉永育生・三浦麻・濵田康治・白谷栄作・髙木強治(2007):水田における溶存有機物の動態.農業および園芸,82(4),505-508.
4) 吉永育生・濵田康治・三浦麻・人見忠良・髙木強治(2007):遮光フロートによる調整池の藻類対策と水質変化.畑地農業,580,2-14.
5) 白谷栄作(2006):有明海沿岸農地の水質環境と水・物質循環機能.畑地農業,576,2-8.
6) 白谷栄作 (2006) 自然共生型流域圏・都市再生における農業研究分野の取り組み.畑地農業,575,2-12.
7) 白谷栄作(2005)流域における農村の水環境と農地生態系.畑地農業,559,15-25.
8) 端憲二・柚山義人・白谷栄作・山口康晴・吉永育生 (2004) 富栄養化した湖沼水の肥料代替性について.農業及び園芸,79(9),954-960.
9) 白谷栄作(2003)「自然共生型流域圏・都市の再生」における農業分野の役割と取り組み.土木技術資料,45(5),24-27.
10) 白谷栄作(2003)農業用ため池の簡易な窒素濃度予測と水質保全対策効果の評価手法.農業技術,58(4),165-168.
11) 白谷栄作(2002)農業用ため池の水質の簡易な予測手法.SDERD,56,6-9.
12) 長谷部均・白谷栄作・吉永育生(2002)水田を主体とした農村地域の水質管理について.ARIC情報,66,41-45.