Forest planting by Saburo Kato?

Bonsai master Saburo Kato was well known for his forest plantings. When I visited Mansei-en nursery in Omiya, which was owned by him, I saw several forest plantings, but was really impressed by the one on the picture. Could it be a bonsai done by Saburo Kato?

P.S. For more info on this forest planting see: http://lomov.blogspot.com.au/2011/12/saihate-no-oka-by-saburo-kato.html).

For more info on Mansei-en see: http://lomov.blogspot.com.au/2012/08/mansei-en-saburo-kato-and-forest.html.