Graduate School of Environmental and Life Science | Okayama University

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Agricultural Land Engineering

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Staff

  • Prof. MORI Yasushi
  • E-mail：yasushim＠（@cc.okayama-u.ac.jp）
  • Soil Environmental Engineering
> Directory of Researchers　> Research Introduction
  • Asst. Prof. TSUJIMOTO Kumiko
  • E-mail：tsujimoto＠（@okayama-u.ac.jp）
  • Hydrology
> Directory of Researchers　> Research Introduction

Research Topics

We are conducting field management based on soil science and hydrology.

Enhancing infiltration and introducing organic carbon by artificial macropores for restoration of degraded soils

Soil is the largest carbon storage body in terrestrial area. Our previous research showed that macroporous soils conduct surface water without clogging, and bypass flow by macropores segregated organic matter from the surface. Organic matter can be effectively conserved by these physical processes, which significantly contributes to carbon storage and bio-chemical processes.

Addressing Climate-Water-Agriculture Nexus by Integrating Earth Observations, Field Observations, and Numerical Model Simulations

Current research topics includes land-lake-atmosphere interaction, local rainfall, rainfall changes due to climate change and land-use change, rainfall monitoring and prediction, rainfall-runoff simulation, optimization of dam operation for the Integrated Water Resources Management. By integrating earth observations by satellites, field observations, and numerical model simulations, we are addressing the climate-water-agriculture nexus to contribute the SDGs under climate change on agricultural land management.

Integrated Approach for Climate-Water-Agriculture Nexus

Publication List

  • Kumiko Tsujimoto, Nana Kuriya, Tetsu Ohta, Koki Homma, Monichoth So Im (2022): Quantifying the GCM-related uncertainty for climate change impact assessment of rainfed rice production in Cambodia by a combined hydrologic - rice growth model. Ecological Modelling vol.464, 109815.https://doi.org/10.1016/j.ecolmodel.2021.109815
  • Kumiko Tsujimoto, Kotaro Ono, Tetsu Ohta, Koemorn Chea, E-Nieng Muth, Sanara Hor, Lyda Hok (2021): Multiyear analysis of the dependency of the planting date on rainfall and soil moisture in paddy fields in Cambodia, 2003-2019. Paddy and Water Environment vol.17-2, pp.247-253.https://doi.org/10.1007/s10333-021-00863-6
  • Bui, L.T.; Mori, Y. ( 2021). Pinhole Multistep Centrifuge Outflow Method for Estimating Unsaturated Hydraulic Properties with Small Volume Soil Samples. Water(Switzerland), 13(9), 1169. https://doi.org/10.3390/w13091169
  • Kurozumi, T., Mori, Y., Somura, H., & O-How, M. (2020). Organic Matter Clogging Results in Undeveloped Hardpan and Soil Mineral Leakage in the Rice Terraces in the Philippine Cordilleras. Water (Switzerland), 12(11), 3158. https://doi.org/10.3390/w12113158
  • Ide, J., Takeda, I., Somura, H., Mori, Y., Sakuno, Y., Yone, Y., & Takahashi, E. (2019). Impacts of Hydrological Changes on Nutrient Transport From Diffuse Sources in a Rural River Basin, Western Japan. Journal of Geophysical Research: Biogeosciences, 124(8), 2565-2581. https://doi.org/10.1029/2018JG004513
  • Mori, Y., Sasaki, M., Morioka, E., & Tsujimoto, K. (2019). When do rice terraces become rice terraces? Paddy and Water Environment, 17(3), 323-330. https://doi.org/10.1007/s10333-019-00727-0
  • Mori, Y. & Tsujimoto, K. (2018). First steps in conservation and restoration, In Ester G. Dipasupil (Ed.), A Banaue story: restoring a world heritage treasure.
  • Tsujimoto, K., Ohta, T., Hirooka, Y., & Homma, K. (2019). Estimation of planting date in paddy fields by time-series MODIS data for basin-scale rice production modeling. Paddy and Water Environment. https://doi.org/10.1007/s10333-019-00700-x
  • Tsujimoto, T., & Tsujimoto, K. (2019). Numerical and experimental study on the risk of paddy field damage due to river bank breach during serious floods. Paddy and Water Environment. https://doi.org/10.1007/s10333-019-00717-2
  • Tsujimoto, K., Ohta, T., & Mori, Y. (2018). Parallel improvement of hydrological simulation and microwave satellite soil moisture observation with a unified soil water model. Journal of Japan Society of Civil Engineers Ser B1 (Hydraulic Engineering) 74(4):I_979-I_984. DOI:10.2208/jscejhe.74.I_979
  • Tsujimoto, K., Ohta, T., Aida, K., Tamakawa, K., & So Im, M. (2018). Diurnal pattern of rainfall in Cambodia: its regional characteristics and local circulation. Progress in Earth and Planetary Science, 5(1), [39]. https://doi.org/10.1186/s40645-018-0192-7

Introduction Video