森林的生长和消耗是其生长发育过程中的对立统一。正确地认识和把握森林在各个生长阶段上的消长变化,是林业资源调查的主要任务之一。但是,林木生长的长期性以及影响林分蓄积消长因子的多样性给森林资源消长调查 The growth and consumption of forests is the unity of opposites in their growth and development. Correctly understanding and grasping the changes of the growth and decline of forests at all stages of growth is one of the main tasks of the forestry resources survey. However, the long-term growth of trees and the diversity of factors affecting the growth and accumulation of forest resources have reduced the growth of forest resources