The larval tunnel quantitative ratio increase with the pine tree height and DBH increased, but it was no correlated with the volume of different height region in tree.
幼虫坑道数量比率随不同松树高度、胸径的增加而增高，与株内不同高度区域的材积大小无关。
The larval tunnel quantitative ratio increase with the pine tree height and DBH increased, but it was no correlated with the volume of different height region in tree.
幼虫坑道数量比率随不同松树高度、胸径的增加而增高，与株内不同高度区域的材积大小无关。
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