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本文以17株平均木的解析木资料,用数理统计和关联度分析的方法,对林分平均木生长过程各指标的变动进行了探讨。结果表明:平均木在单株材积和材积生长率方面,近3年内的变动系数在8—30％左右。尤其是材积生长率的变动较材积变动更为突出,最高34％。因此,在林分平均木调查中,必须注意样木的选取和抽样的数量。根据苏联学者德沃列茨基的生长百分率或误差公式推算出平均木调查时的采样株数。
In this paper, the average wood wood analytical data of 17, using mathematical statistics and correlation analysis method, the average wood growth process of each index changes. The results showed that the average coefficient of variation of average wood volume per plant and volume was about 8-30% in the past three years. In particular, the change in volume growth rate is more prominent than the volume change, up to 34%. Therefore, in the stand average wood survey, attention must be paid to the number of sample wood and the number of samples. According to the Soviet scholar Dvretzky’s growth percentage or error formula to calculate the average number of wood samples at the time of the investigation.