关键词: 木荷, 坡向, 坡位, 差异

Abstract: Growth differences of Schima superba Gardn.et Champ. at different slope orientation and slope positions were studied.The result showed that there was significant difference in DBH,tree height,individual volume at different slope orientation and slope positions.In the southern slope,the average DBH at downslope was 9.17cm.The average tree height at downslope was 8.10m.The average individual volume at downslope was 0.031617m³.In the north slope,the average DBH at downslope was 8.84cm.The average tree height at downslope was 7.83m.The average individual volume at downslope was 0.027923m³.All growth mean indexes of mid-slope were higher respectively than those at upslope,which was less than those downslope.Sunny slope orientation was better than shady slope orientation.Growth at downslope was best,was better mid-slope and worst upslope.Slope orientation and slope positions were the important factors influencing canopy of plantations.There were significant differences in slope orientation at living branch height and crown,except dead branch height.There were significant differences in different slope positions at living branches height,dead branch height and crown.The tree height and DBH were respectively significantly associated with living branch height,dead branch height and crown.The mean DBH/H showed that height growth can be seen instead of radial growth with the rising of slope position.There was less interference in the stand of Schima superba Gardn.et Champ.,which produces a small amount of sprouting.It showed that sprouting was related to interference.

Key words: Schima superba Gardn.et Champ, slope orientation, slope position, differences