摘要
本文利用不同地位级（或地位指数），从高令阶开始向低令阶依次计算累积材积Ｙ和累积株数Ｎ的方法，通过计算机进行回归，在双对数纸上绘制Ｙ—Ｎ曲线，并连结各Ｙ—Ｎ曲线上的相等测树因子点，编制生长过程图。
In this paper,utilizes different site quality class(sitlindex)and methodby calculating accumulated volume Y and accumulativenumber N from high year steps to low year steps,and regresses bycomp-uter,and draws Y-N curve on double-logarithm paper,and joins a pointof same factor on the Y-N curve,and organi-zates grouth process map.
