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Soil Science Lab
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A lab that studies soil in urban green spaces and farmland to explore how material cycles work.

AboutAbout the lab
Facing soil, a limited resource.
The Soil Science Lab studies material cycles in ecosystems, focusing on soil, a limited resource.
The lab is based at Matsudo Campus, set in the green Tojogaoka area of Matsudo, Chiba Prefecture.
The lab turns pruned branches and similar material from urban green spaces into wood chips, charcoal, and compost, and uses them to study how to store carbon in soil. It also runs soil improvement trials on farmland in Fukushima Prefecture that has been decontaminated.
Key terms
- Material cycles
- The movement of elements such as carbon and nitrogen among plants, soil, microorganisms, and the atmosphere as they change form
- Carbon sequestration
- Storing carbon in places such as soil to curb the increase of carbon dioxide in the atmosphere
- Soil fertility
- A measure of how much capacity a soil has to grow crops
ResearchResearch themes
The lab studies material cycles with a focus on soil. Its research targets include urban green spaces, green roofs, and farmland in Fukushima Prefecture after decontamination.
*Illustrative imageStoring carbon in urban green spaces
The lab turns pruned branches and weeds generated by managing urban green spaces into wood chips, carbonized material, and compost, and uses them to examine how much carbon is sequestered and how soil properties and soil microorganisms are affected.
*Illustrative imageImproving soil in farmland after decontamination
In the Yamakiya district of Kawamata Town and in Iitate Village, Fukushima Prefecture, the lab conducts trials to improve the soil of farmland whose fertility dropped sharply after decontamination, using green manure, compost, and rice husk charcoal.
*Illustrative imageFinding soils suited to green roofs
Academic information is lacking on what kinds of soil suit urban green roofs, and in what ways, in terms of material cycles and types of microorganisms. The research is carried out jointly with faculty of the Institute for International Academic Research.
MembersFaculty
The members of the Soil Science Lab are faculty, visiting faculty, professors emeritus, laboratory assistant staff, students in the doctoral, master's, and undergraduate programs, visitors, special audit students, research students, and exchange students.As of 2026
- Associate ProfessorMiwa Yashima
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: “Field soil sampling” Prof. Dr. Alessandro Samuel-rosa / CC0 (cropped)
- Storing carbon in urban green spaces: “Biochar made at convergence 2016” Permaculture Association / CC BY-SA 2.0 (cropped)
- Improving soil in farmland after decontamination: “Magic Valley Soil Health Field Day (20220629-CSW-NRCS-038)” USDAgov / Public domain (cropped)
- Finding soils suited to green roofs: “EVA- Lanxmeer Green roof 2009” Lamiot / CC BY-SA 4.0 (cropped)
- Related lab (Space Horticulture Lab): “Genetically modified, extemely dwarf tomato plants grow aboard the International Space Station (iss073e0031528)” NASA Johnson Space Center / Public domain (cropped)
- Related lab (Cultivation Science Lab (Kanno)): “Asparagus field Drzymalowo kz01” Krzysztof Ziarnek, Kenraiz / CC BY-SA 4.0 (cropped)
- Related lab (Agricultural Food Engineering Lab): “So they are pulled into the factory on a conveyor belt ( )” Paul Narvaez from Los Angeles, USA / CC BY 2.0 (cropped)
- Related lab (Plant Cell Engineering Lab): “Plant tissue culture” Angphotorion / CC BY-SA 4.0 (cropped)
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