Effect of the bamboo culm density on the tree species diversity and density of understory at a forest stand on a major bed along the Miya river downstream [Japan]
2006
Nakai, A.(Mie Univ., Tsu (Japan)) | ; Kisanuki, H.
The relationship between bamboo culm density and tree species diversity as well as tree density at a forest stand established on a major bed along the Miya River downstream was studied to clarify the effect of bamboo culm density on the understory tree species. Significant correlation between culm density and diversity index H' or any values which indicate stand structure was not found. Bamboo culm density was different among vegetation groups classified on the basis of species composition of the understory. Species number as well as H' was low at the vegetation group with high bamboo culm density, although those values were high at the other groups with low bamboo culm density. Bamboo culm density was high at all quadrats, so any vegetation groups would be affected by suppression of bamboo. The effect of bamboo suppression on the recruitment and survival of the understory trees could be more serious at vegetation group with higher culm density. Therefore, thinning of bamboo culm is necessary to maintain the tree species diversity at high level in a forest with high bamboo culm density.
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