|| 要旨トップ | 目次 |||日本生態学会第63回全国大会 (2016年3月、仙台) 講演要旨
一般講演（ポスター発表） P2-177 (Poster presentation)
Controlling regeneration following soil scarification (SS) is generally unpredictable; hence, more precise forecasts with considering various determinant factors are required. In a previous study, we found that SS with leaving surface soil maintained the number of varied seeds, whereas, the treatment seemed to prevent their germination presumably by relatively water-poor surface condition induced by plowing. We therefore assume that the positive effect of the soil-leaving would be clearer on wetter sites. In this study, we evaluated the effects of three different SS treatments (including those with and without soil-leaving) on soil properties at contrasting topographic locations (TL). The mean water contents were significantly lower in soil-leaving sites on both upper and lower locations. The soil solid phase ratio showed the similar pattern on upper sites, but there were no significant differences among treatments on lower sites. The more abundant water supply in lower sites might change the surface structure, and mitigate the difference among treatments. These results suggest that appropriate treatment in SS would be changed according to the TL.