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Forest Biogeoscience Lab
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The lab explores how forests and the global environment influence each other.
AboutAbout the lab
Forests: the true leading players in biogeoscience
The Forest Biogeoscience Lab studies the mechanisms by which forests and the global environment influence each other.
Its research spans scales from the cells of organisms to global vegetation zones, and from atmospheric turbulence to vegetation change over hundreds of years.
The lab investigates how forests mitigate floods, how they contribute to the climate system, and how water and materials cycle through forest ecosystems.
It also works to clarify the mechanisms of sediment movement in mountain forests, with the aim of applying the findings to sediment disaster countermeasures.
Key terms
- Biogeoscience
- A field of earth and planetary science that deals with how organisms and the global environment influence each other
- Water conservation function
- The function by which forest soil stores rainwater and releases it into rivers little by little
- Tree ecophysiology
- A field that studies how trees use water and light to live, in relation to their surrounding environment
NewsLab news
Announced research results on carbon dioxide uptake by Japan's forests
As part of an international research group, analyzed the impact of converting tropical forests into plantations
Together with Chiba University and others, proposed a new method for observing tropical rainforests with the Himawari satellite
Theoretically proved that "the water benefits we receive from forests begin with rock"
Together with the University Forests and others, built a new growth model for Japanese cedar (sugi) stands
ResearchResearch themes
The lab conducts environmental research that connects the local to the global. Using theory, experiments, and observation, it addresses the flood mitigation function of forests, their contribution to the climate system, water and material cycles in forest ecosystems, and sediment movement phenomena in mountain forest areas.
*Illustrative imageHow Forests Shape the Climate
The lab studies how forests influence the way the global climate is formed. It investigates the carbon dioxide and water vapor exchanged between forests and the atmosphere through observation and simulation.
*Illustrative imageAssessing the Water Conservation Function of Forests
The lab is developing methods to evaluate numerically how forests store rainwater and release it to rivers. It also builds simulation models of forested watersheds that include the movement of water within bedrock.
*Illustrative imageTree Ecophysiology
This is research in tree ecophysiology related to the mechanisms that form the environment over wide areas and at specific locations. The lab links processes from photosynthesis in a single leaf to carbon dioxide uptake by an entire forest.
*Illustrative imageSediment Movement and Sediment Disaster Countermeasures
This research aims to clarify the mechanisms of sediment movement in mountain forests. Through theory, experiments, and observation, the lab examines topics such as how debris flows travel and deposit, and applies the results to sediment disaster countermeasures.
MembersFaculty
The members of the Forest Biogeoscience Lab consist of faculty, doctoral, master's, and undergraduate students, researchers, and administrative assistants.As of 2026
- ProfessorTomo'Omi KumagaiPublications ↗
- Associate ProfessorNorifumi HottaPublications ↗
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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: “Borndipt” T. R. Shankar Raman / CC BY 3.0 (cropped)
- How Forests Shape the Climate: “Autumn Morning Mist ( )” Western Arctic National Parklands / CC BY 2.0 (cropped)
- Assessing the Water Conservation Function of Forests: “Karpacz Poland 088 a” Krzysztof Popławski / CC BY-SA 4.0 (cropped)
- Tree Ecophysiology: “Leaves-Canopy-6859” Loadmaster (David R. Tribble) / CC BY-SA 3.0 (cropped)
- Sediment Movement and Sediment Disaster Countermeasures: “Erosion control (sabo) dam” Gpwitteveen / CC BY-SA 4.0 (cropped)
- Related lab (森林風致計画学研究室): “Kamikōchi, Hida Mountains range, Nagano Prefecture; September 2007 (03)” skyseeker / CC BY 2.0 (cropped)
- Related lab (林政学研究室): “Hanazawa no Sato, view of a mountain village settlement” Azabujulie / CC BY-SA 4.0 (cropped)
- Related lab (森林経理学研究室): “Aerial view of a forest 1 (Unsplash)” Maria Mekht / CC0 (cropped)
- Related lab (森林利用学研究室): “Timberjack Harvester - geograph.org.uk - 904916” Will Anderson / CC BY-SA 2.0 (cropped)
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