<正>本文根据福建省洋口林场1986年对建阳地区所选的马尾松优树子代测定数据,引进家系的亩蓄积量的相对指标,合理选择分类因子,应用FunyISODATA聚类分析法,把家系分级,为制定和判别家系质量标准提供定量依据。

This paper based on date of the filial generation of masson pine Jianyang district determined by the Yangkou Forestry Centre, Fujian province in 1986, the gradation famities adopted the relative index on timber volume per mu of family and rationally analysis to the gradation of famities, and them applied Fuzzy ISODATA cluster selecting grading factors. The paper also provided quantitative basis of qualitative criterion for drawing up and discriminating families.