一、密度效果在林业上,以自然形原来的状态培育森林的方法,即用在某种程度郁闭状态下经营的方法。用立木的混杂程度——每一定面积的立木株数——-作为这种郁闭状态的一种表示方法,把这个称为立木密度。立木密度一提高,就发生所谓在同一树冠层中或上层树冠与下层树冠之间等,以争 First, the density effect In forestry, the natural state of the original state of cultivation of the forest method, that is used in a certain degree of canyon business method. With the mixed degree of standing trees - the number of standing trees per area - as a representation of this canopy state, this is called standing tree density. Rising the density of standing wood, it occurs so-called in the same canopy or between the upper canopy and the lower canopy, etc., in order to fight