- 2015 - 2018 Ecological structure of abandoned coppice beech stands and its potential for timber production, distributed in the mountainous heavy snowfall region.
- 2013 - 2015 Functional estimations of forest ecosystem dynamics by field manipulate experimentation in a heavy snow fall region
- 2009 - 2011 Evaluation of a suitable habitat for the crested ibis and the restoration scenario with satellite tracking of the re-introduced ibis
- 2008 - 2011 Influence of the gregarious flowering and death of bamboo to ecosystem and shifting cultivation agriculture in Mizoram, India
- 2005 - 2007 フクロウが人工林の針広混交林化に与える影響
- 2005 - 2007 Ecological research of gregarious flowering of muli bamboo in Mizoram, India
- 2001 - 2003 Effects of habitat selection of wood mice on the diversity of canopy tree species in mixed forests.
- 1998 - 1999 Regeneration characteristics of Quercus communities in Sado Island.
- 1997 - 1998 Forest management system with artificial canopy gaps in coppice forest, special reference to species diversity.
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