Kazuhito Sakai

サカイカズヒト | Kazuhito Sakai

Affiliation and department：
Job title： Professor

Research field (1)： Rural environmental engineering and planning

Research keywords (6)：農業水文学 , 地球温暖化 , 土壌呼吸 , 水文モデル , 土壌侵食 , Hydrology

Research theme for competitive and other funds (20)：

2021 - 2024 量産型NDIRガス分析機器の開発と熱帯・亜熱帯地域におけるN2O排出係数の決定
2019 - 2023 Implementation of a dynamic erosion model in Japan to predict climate change impacts and rainfall event-based erosion
2018 - 2021 Development of a soil gas analysis device using IR for a profile method
2009 - 2011 Development of Red Soil Runoff Preventive Measure
2005 - 2009 Study on sediment and nutrients transport in watershed and their management -targeting subtropical area-

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Papers (38)：

P. P. Ruwanpathirana, Kazuhito Sakai, G. Y. Jayasinghe, Tamotsu Nakandakari, Kozue Yuge, W. M. C. J. Wijekoon, A. C. P. Priyankara, M. D. S. Samaraweera, P. L. A. Madushanka. Evaluation of Sugarcane Crop Growth Monitoring Using Vegetation Indices Derived from RGB-Based UAV Images and Machine Learning Models. Agronomy. 2024. 14. 9. 2059-2059
OKAMOTO Ken, ANZAI Toshihiko, SAKAI Kazuhito, SAITO Tadaomi, INOSAKO Koji. Evaluation of soil water dynamics in the subsurface irrigation system OPSIS using lysimeter experiments. Journal of Arid Land Studies. 2024. 34. S. 69-73
M. H. J. P. Gunarathna, Kazuhito Sakai, M. K. N. Kumari. Emulator-based optimization of APSIM-Sugar using the results of sensitivity analysis performed with the software GEM-SA. Frontiers in Sustainable Food Systems. 2023. 7
Himasha Rathnappriya, kazuhito sakai, Ken Okamoto, Sho Kimura, Tomokazu Haraguchi, Tamotsu Nakandakari, Hideki Setouchi, W.B.M.A.C. Bandara. Global Sensitivity Analysis of Key Parameters in the APSIMX-Sugarcane Model to Evaluate Nitrate Balance via Treed Gaussian Process. Agronomy. 2022
Thusitha Saman Bandara, kazuhito sakai, Tamotsu Nakandakari, Kozue Yuge. A Gas Diffusion Analysis Method for Simulating Surface Nitrous Oxide Emissions in Soil Gas Concentrations Measurement. Agriculture. 2022

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MISC (52)：

安西俊彦, 岡本健, 大西純也, 識名安輝, 新盛敬也, 若杉晃介, 藤田理子, 猪迫耕二, 齊藤忠臣, 酒井一人, et al. 節水・安価・強靱かつ灌漑労力の省力化に貢献する畑地用地下灌漑システムOPSIS. 月刊畑地農業. 2024. 784
岡本健, 安西俊彦, 酒井一人, 藤田理子, 大西純也, 猪迫耕二, 齊藤忠臣, 識名安輝, 前津雅英. Effect on water-saving of subsurface irrigation system (OPSIS), a case study in Ishigaki Island. 農業農村工学会大会講演会講演要旨集(CD-ROM). 2023. 2023
安西俊彦, 若杉晃介, 岡本健, 酒井一人, 藤田理子, 大西純也, 猪迫耕二, 齊藤忠臣, 識名安輝, 前津雅英. OPtimum Subsurface Irrigation System “OPSIS” for contributing several issues on upland. 農業農村工学会大会講演会講演要旨集(CD-ROM). 2023. 2023
岡本健, 安西俊彦, 酒井一人. 地下灌漑システムOPSIS設置圃場における土壌水分・EC動態の観測. 日本雨水資源化システム学会研究発表会講演要旨集. 2022. 30th
岡本健, 酒井一人, 中村真也, 仲村渠将, 長裕幸. 熱帯土壌のPTFsを用いた島尻マージの水分特性曲線の推定. 農業農村工学会九州沖縄支部大会講演要旨集. 2015. 96th

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Lectures and oral presentations (76)：

SIMULATION OF N2O EMISSIONS FROM A SUGARCANE FIELD IN OKINAWA, JAPAN
(2015)
SIMULATION OF N2O EMISSIONS FROM A SUGARCANE FIELD IN OKINAWA, JAPAN
(2015)
N2O EMISSIONS FROM SHIMAJIRI-MAJI (CALCARIC DARK RED SOIL) AFTER APPLYING TWO CHEMICAL FERTILIZERS
(2014)
APSIM による地下灌漑システム OPSIS のモデル化
(日本雨水資源化システム学会要旨集 2014)
N2O EMISSIONS FROM SHIMAJIRI-MAJI (CALCARIC DARK RED SOIL) AFTER APPLYING TWO CHEMICAL FERTILIZERS
(2014)

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Professional career (1)：

Work history (2)：

2009/04/01 - - , 琉球大学農学部地域農業工学科農村環境・基盤環境学, 教授
2009/04/01 - - , University of the Ryukyus, Faculty of Agriculture, Department of Regional Agricultural Engineering, Research Associate

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