固定样地的建立是林业实践的首要任务之一,这些样地可用于收集表明林地条件和林地生产力的资料信息。自然要求以这些样地的值为基础来评价森林资源的长期变化,例如森林的枯损,进界生长和林分结构的变化。然而,这些样地也导致某种特殊类型的误差,而这种误差与森林的自然生长是不一致 The establishment of fixed plots is one of the top priorities for forestry practice and these plots can be used to collect information about the conditions of the woodland and the productivity of the woodland. It is natural to assess the long-term changes in forest resources based on the values ​​of these plots, such as forest loss, plantation growth and change in stand structure. However, these plots also lead to some special type of error that is inconsistent with the natural growth of the forest