[经营] 单位面积上生长的树木密度称为立木密度,就株数、材积、胸高断面积、树冠等各因子而论,有各自的密度,在表示方法上也分为绝对值和相对值两种。立木度一词被定义为某一林分的实际材积对法正材积的比 [Business] the growth of the unit area of ​​the tree density known as the stand density, on the number of trees, volume, chest height and area, crown and other factors, have their own density, the representation is divided into two absolute and relative values . The term woodcut is defined as the ratio of the actual volume of a stand to the normalized log