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在发生枯损或采伐了被害木的时候,间隔期的生长率怎样计算呢?这是进行重复调查,求算生长资料时经常碰到的问题。此时,由于期末蓄积组成中的期初蓄积遭枯损或被部分采伐,故而不能原封不动地照搬通常的公式。以下介绍一近似式并阐述其推导过程。
How to calculate the growth rate during the interval when the crops are damaged or harvested? This is a problem often encountered when carrying out repeated surveys and calculating the growth data. At this point, the usual formula can not be copied as it is because the stock at the beginning of the period is depleted or partially harvested. The following describes a similar formula and explain the derivation process.