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Water Environment Engineering Lab
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The lab manages the flow of water and fertilizer in farmland to balance crop production with the regional environment.
AboutAbout the lab
Water management for a healthy regional environment.
The lab studies how to manage the water, material and temperature environment of a region through irrigation and drainage.
Rural areas face a variety of environmental problems, including turbid water runoff from paddy fields, nitrate nitrogen contamination of groundwater under upland fields, and greenhouse gas emissions from farmland.
The lab aims to develop methods of managing water and chemical substances that help solve these problems while maintaining crop productivity and quality.
Undergraduate students are assigned to the lab in their fourth year (graduate students belong to the Division of Environmental Science and Technology, Graduate School of Agriculture).
Key terms
- Irrigation
- Bringing water to farmland and supplying it to crops
- Andosol (kuroboku soil)
- A black soil formed from volcanic ash. It is common in Japanese upland fields and adsorbs phosphorus strongly
NewsLab news
A master's student received the Annual Meeting Excellent Presentation Award (Kurita Award) at the 60th Annual Meeting of the Japan Society on Water Environment
A master's student received the Young Researcher Excellent Poster Presentation Award at the 2025 Niigata Meeting of the Japanese Society of Soil Science and Plant Nutrition
A fourth-year undergraduate student received the Excellent Poster Award (Lion Award) at the Annual Meeting of the Japan Society on Water Environment
ResearchResearch themes
A region is formed by the interplay of the hydrosphere, pedosphere, atmosphere and biosphere. The lab scientifically describes, one by one, the complex movements of water and chemical substances within it, and proposes management methods that people can put into practice from an engineering perspective.
*Illustrative imageManaging the flow of water and chemical substances
For rural environmental problems such as turbid water, groundwater contamination, greenhouse gases, and contamination by heavy metals and radioactive substances, the lab studies methods of managing water and chemical substances through irrigation and drainage that help solve them while maintaining crop productivity and quality.
*Illustrative imageMovement of phosphorus in soil
The adsorption of chemical substances onto soil governs the movement of water and materials. In master's theses and other work, the lab investigates topics such as phosphorus adsorption on Andosols (kuroboku soil), the evaluation of fertilizers made from sewage sludge, and the phosphorus supply-demand balance of farmland.
MembersFaculty
The lab's members consist of faculty, administrative assistants, and students in the doctoral, master's and undergraduate programs.
- ProfessorKimihito Nakamura
- Associate ProfessorTakehide Hama
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Creek in wheat fields in Honjo, Saga” Peka / CC BY-SA 4.0 (cropped)
- Managing the flow of water and chemical substances: “Pumping the water from creek to field, Honjo, Saga” Peka / CC BY-SA 4.0 (cropped)
- Movement of phosphorus in soil: “Geopark Vulkaneifel Goßberg Lava Ascheablagerungen 2” © / [https://creativecommons.org/licenses/by-sa/4.0/deed.de Cc-by-sa-4.0] / CC BY-SA 4.0 (cropped)
- Related lab (Water Resources Utilization Engineering Lab): “Heiwa Irrigation 1910 B” 作者不詳 / Public domain (cropped)
- Related lab (Bio-Sensing Engineering Lab): “Spectrometer” Jooja / CC BY-SA 4.0 (cropped)
- Related lab (Rural Planning Lab): “Kyoto Toin Koshihata Rice Fields 2013-09” At by At / CC BY-SA 3.0 (cropped)
- Related lab (Field Robotics Lab): “John Deere Combine Harvester Ebing 1799” Ermell / CC BY-SA 4.0 (cropped)
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