The Study with Effect of Mowing at Different Times on the Sasa senanensis Dominanted Communities for the Purpose of Wildflower-habitat Conservation

Abstract

(1) We investigated the semi-natural grasslands in Togakushi Plateau, Nagano Prefecture, central Japan, to obtain ecological information of vegetational managemant for conservation of wild-flower-habitat.(2) To clarify to proper time of mowings, we experimented mowing at four different times in the Sasa senanensis dominanted communities, and we surveyed phenology in this study area.(3) As the result of the diagnosis of plant succession, we found out that Sasa senanensis was the most strong competitive species for wild flower. The best season of mowing to remove Sasa senanensis was from early August to about the middle of September.(4) But, when wild flower communities have existed, the best time of mowing was early June or after the middle of September for avoide the flowering and fruiting seasons of wild flowers.