Website of NANKO Kazuki
Last update: Jun 10, 2019



Senior Researcher

Department of Disaster Prevention, Meteorology and Hydrology
Forestry and Forest Products Research Institute

Matsunosato 1, Tsukuba, Ibaraki 305-8687, Japan
Tel: +81-29-829-8240, Fax: +81-29-874-3720

knanko[ at ]
nanko-kazuki[ at ]


Curriculum Vitae

pdf Curriculum Vitae
KNanko-CV.pdf (update: September 13, 2019)
Adobe Acrobat Document [Download]


Research interest

I am interested in the cross-cutting science at interface of meteorology (wind, rainfall, snow, etc.), forestry, and soil science from ecohydrological and geomorphological perspectives. Specific interest is raindrops, rainfall partitioning process by forest canopy, tree sway and breakage mechanism by fluid (wind, avalanche, and tsunami), and soil erosion in mountainous forest area.

  • Ecohydrology
  • Hydrogeomorphology
  • Tree Biomechanics (and Ecomechanics)
  • raindrop; drop size distribution (DSD); erosivity; kinetic energy,
  • canopy interception; throughfall,
  • tree sway; tree breakage; windthrow; computational fluid dynamics,
  • splash erosion; splash detachment; soil erosion,
  • soil carbon; National Forest Soil Carbon Inventory,
  • Japanese cypress,
  • laser disdrometer, LDG (laser drop-sizing gauge)

Raindrop/Snowflake/Particle monitoring with LDG (Google Map)

Selected Publications

Brief Summary

Totally 46 peer-reviewed journal publications.
- 17 as first author
- 36 in English / 8 in Japanese / 2 in Iranian.

Other website:
- ORCID (0000-0002-1157-9287)
- publons (ResearcherID: F-4833-2010)
- Scopus preview
- Google Scholar Citations

Throughfall Drops
  • Nanko, K., Watanabe, A., Hotta, N. and Suzuki, M. 2013. Physical interpretation of the difference in drop size distributions of leaf drips among tree species. Agricultural and Forest Meteorology 169: 74-84.
  • Nanko, K. and Hotta, N. and Suzuki, M. 2006. Evaluating the influence of canopy species and meteorological factors on throughfall drop size distribution. Journal of Hydrology 329: 422-431.
  • Levia, D.F., Hudson, S.A., Llorens, P. and Nanko, K. 2017. Throughfall drop size distributions: a review and prospectus for future research. Wiley Interdisciplinary Reviews: Water 4: e1225.
    DOI:10.1002/wat2.1225Open access
  • Levia, D.F.*, Nanko, K.* (* Co-first authors), Amasaki, H., Giambelluca. T.W., Hotta, N., Iida, S., Mudd, R.G., Nullet, M.A., Sakai, N., Shinohara, Y., Sun, X., Suzuki, M., Tanaka, N., Tantasirin, C. and Yamada, K. 2019. Throughfall partitioning by trees. Hydrological Processes 33: 1698–1708.
    DOI:10.1002/hyp.13432Open access

Rainfall Partitioning by Forest Canopy
  • Nanko, K., Onda, Y., Ito, A. and Moriwaki, H. 2011. Spatial variability of throughfall under a single tree: Experimental study of rainfall amount, raindrops, and kinetic energy. Agricultural and Forest Meteorology 151: 1173-1182.
  • Nanko, K., Onda, Y., Kato, H. and Gomi, T. 2016. Immediate change in throughfall spatial distribution and canopy water balance after heavy thinning in a dense mature Japanese cypress plantation. Ecohydrology, 9: 300-314.

Rainfall Erosivity and Soil Erosion
  • Nanko, K., Mizugaki, S. and Onda, Y. 2008. Estimation of soil splash detachment rates on the forest floor of an unmanaged Japanese cypress plantation based on field measurements of throughfall drop sizes and velocities. Catena 72: 348-361.
  • Nanko, K., Giambelluca, T.W., Sutherland, R.A., Mudd, R.G., Nullet, M.A. and Ziegler, A.D. 2015. Erosion potential under Miconia calvescens stands on the Island of Hawai‘i. Land Degradation & Development 26: 218-226.
  • Nanko, K., Moskalski S.M. and Torres, R. 2016. Rainfall erosivity–intensity relationships for normal rainfall events and a tropical cyclone on the US southeast coast. Journal of Hydrology, 534: 440-450.

Tree biomechanics
  • Nanko, K., Suzuki, S., Noguchi, H., Ishida, Y., Levia, D.F., Ogura, A., Hagino, H., Matsumoto, H., Takimoto, H. and Sakamoto, T. 2019. Mechanical properties of Japanese black pine (Pinus thunbergii Parl.) planted on coastal sand dunes: resistance to uprooting and stem breakage by tsunamis. Wood Science and Technology 53: 469–489.
    DOI:10.1007/s00226-019-01078-z [full-text view-only version]

Soil Science
  • Nanko, K., Hashimoto, S., Miura, S., Ishizuka, S., Sakai, Y., Levia, D.F., Ugawa, S., Nishizono, T., Kitahara, F., Osone, Y. and Kaneko, S. 2017. Assessment of soil group, site and climatic effects on soil organic carbon stocks of topsoil in Japanese forests. European Journal of Soil Science 68: 547–558.
  • Nanko, K., Ugawa, S., Hashimoto, S., Imaya, A., Kobayashi, M., Sakai, H., Ishizuka, S., Miura, S., Tanaka, N., Takahashi, M. and Kaneko, S. 2014. A pedotransfer function for estimating bulk density of forest soil in Japan affected by volcanic ash. Geoderma 213: 36-45.

Major international collaborators

  • Delphis F. Levia (University of Delaware, USA)
    Study on rainfall partitioning by forest canopy.
  • Pilar Llorens (IDAEA-CSIC, Spain)
    Study on rainfall partitioning by forest canopy.
  • Yoann Weber (Imagination Technologies, UK)
    Study on throughfall rendering.
  • Thomas W. Giambelluca (University of Hawaiʻi at Manōa, USA)
    Study on soil erosion in invasive forest.
  • Raymond Torres (University of South Carolina, USA)
    Study on soil erosion process in salt marsh.

Collaborators of Kazuki NANKO in papers (Google Map)

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