林分郁闭度是林冠投影面积与林地面积之比。它与疏密度一样,是用来说明林分疏密程度的一种相对指标。从森林经营的角度来看,林分郁闭度是一个更有意义的指标,它直接关系着森林环境的变化情况,是确定森林经营措施的重要依据之一。目前通用的测定方法有目测和图测两种。前者比 Forest canopy density is the ratio of canopy projection area and forest area. It is the same as the density, is used to illustrate the degree of density of a relative index. From the point of view of forest management, canopy standoff is a more meaningful indicator, which is directly related to the change of forest environment and is an important basis for determining forest management measures. At present, there are two kinds of methods for visual measurement and chart measurement. The former ratio