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Forest Hydrology and Erosion Control Lab
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A hydrology and erosion control lab that studies the movement of water and sediment in forests and watersheds.
AboutAbout the lab
Looking at the relationship between people and nature through water and disasters.
The Forest Hydrology and Erosion Control Lab explores the dynamics of the water cycle in forests and other types of land, as well as local communities and their vulnerability to disasters.
It aims to understand and clarify the actual relationship between people and nature, and to make proposals on how that relationship should be, from global to local perspectives.
Focusing on mountainous upper watersheds, the lab studies how water and sediment move within watersheds, through field surveys and modeling using GIS and other tools.
Every Tuesday, the lab holds a seminar, both in person and online, with progress reports on undergraduate, master's, and doctoral theses and presentations of papers. Drop-in participants are also welcome.
Key terms
- Watershed
- The area from which water gathers and flows out into a river. It is considered to include the movement of water within slope soils.
- Debris flow
- A phenomenon in which sediment and rocks mixed with water, for example during heavy rain, rush down a slope or mountain stream all at once.
- Evapotranspiration
- The process by which water returns from soil and plants to the atmosphere. In forests, it also includes transpiration and interception evaporation during and right after rainfall.
ResearchResearch themes
Aiming at resource management at the watershed scale, the lab works on clarifying and modeling the processes by which water and sediment move, focusing on mountainous upper watersheds. It conducts research in cooperation with researchers in Japan and abroad, from small scales such as examining soil properties to sediment movement and water runoff across whole watersheds, including mountain streams.
*Illustrative imageThe Relationship between Natural Disasters and Human Society
Disasters such as earthquakes and floods vary in type and form. Sediment disasters also involve various phenomena: besides cliff failures, debris flows, and landslides, there are shallow landslides, deep-seated landslides, and massive slope failures.
*Illustrative imageCycles of Water, Sediment, and Materials in Watersheds
The lab considers it necessary to understand the movement of water within slope soils and the distribution of evapotranspiration within a watershed. When heavy rain supplies a large amount of water to a slope, sediment movement occurs, and the lab considers the influence of vegetation important in this interaction.
*Illustrative imageWater, Energy, and Carbon Cycles in Forests
Through photosynthesis and transpiration, forests affect atmospheric conditions such as temperature and humidity as well as soil moisture, and are at the same time affected by the atmosphere and the soil environment. The lab considers understanding this interaction necessary for evaluating the influence of forests at scales from local to global.
MembersFaculty
The members of the Forest Hydrology and Erosion Control Lab consist of faculty, researchers, postdoctoral researchers, and doctoral, master's, and undergraduate students.As of 2024
- ProfessorTakashi Gomi
- Assistant ProfessorAyumi Kotani
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: “CSIRO ScienceImage 4458 Forest on mountain slopes in catchment area of Corin Dam ACT Southwest of Canberra 19Kms from turnoff on Paddys River Road along Corin Road” Willem van Aken, CSIRO / CC BY 3.0 (cropped)
- The Relationship between Natural Disasters and Human Society: “Ross Landslide Debris Flow & Dock, Ross Lake NRA - 2010 (f1380e35-d679-4c42-a9f7-e32b5f7e124c)” NPS / Public domain (cropped)
- Cycles of Water, Sediment, and Materials in Watersheds: “Chalakudy River Basin Map” Prajaneeshp (talk) / CC BY-SA 3.0 (cropped)
- Water, Energy, and Carbon Cycles in Forests: “Forest Canopy (56322)” Theactivistuk / CC BY-SA 4.0 (cropped)
- Related lab (森林社会共生学): “Temuan headman in his community forest garden” Pakbelang / CC0 (cropped)
- Related lab (循環資源利用学): “Cross-section of an Oak Log Showing Growth Rings” Rbreidbrown / CC BY-SA 4.0 (cropped)
- Related lab (森林保護学): “Starr- -Sporobolus virginicus-insect survey suckvac with Forest-Kanaha Pond-Maui ( )” Forest and Kim Starr / CC BY 3.0 us (cropped)
- Related lab (土壌圏物質循環学): “Чорнозем типовий” Serhey0211994 / CC BY 4.0 (cropped)
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