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应用１９２８个样本，编制出华北落叶松人工林２２个平均高径比的一元材积式，并通过伐倒区分求积木验证，用该材积式求得的林分蓄积与实际蓄积之间只差０．９％，与一元材积表比较精度提高１０～２０％，且适用性较好。
A total of 1928 samples were used to develop a 22-unit Largest Larix principis-rupprechtii plantation, which was validated by the method of plucking and dividing. The difference between stand volume and actual volume .9%, compared with the single volume table to improve the accuracy of 10 to 20%, and the applicability is better.