The Effects of Silvopastoral Practice on Changes of Understory Vesetation in a Japanesr Larch(Larix kaempferi) Plantation

초록

This study was conducted to investigate the efects of thining on changes in standcharacteristics and understory vegetation in a silvopasture practiced Japanese larch plantation in theResearch Forest of Kangwon National University, Korea. Thre different thinning intensities (64%, 35%,and control) were applied. Before and after thinning, the understory plant species increased its number from48 (7 tre species, 7 shrubs species, 28 herbaceous species, and 6 wody climbers) to 10 (1 tree species,the forest floor, and plot A (325 stems/ha) had much higher number of undersory species than those of plotB (575 stems/ha) and control plot (1,150 stems/ha). In three years after thinning, understory abovegroundbiomass (kg/ha) of herbs were 523 for control, 1,230 for plot B, and 1,288 for plot A. The canopy coveragehad remarkable influence on the understory biomass production, resulting in relatively small amount ofherbage production on control plot. The diferences were statisticaly significant between thinned plots and

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