目前,除造林工作外,在采伐时利用经济价值高的伐前更新幼树形成新林具有重大的意义,但调查簿中幼树调查材料往往不能作为伐区采伐工艺设计的可靠依据。因为,虽然调查簿中记载有关幼树、年龄、密度、树高和生活力的材料,但都比较主观,彼此不便于比较,没有具体的数量及质量的统一标准。调查 At present, in addition to afforestation work, it is of great significance to use the economically valuable saplings to form a new forest except for afforestation. However, the survey materials of young saplings in surveys often can not be used as a reliable basis for cutting technology in cutting areas. This is because although the survey records materials on saplings, age, density, tree height and viability, they are subjective and inconvenient to compare with each other. There is no specific uniform standard of quantity and quality. survey