应用一元材积表法测定胡杨林分蓄积量

Measure Populus euphratica Stand Volume by the One-way Volume Table

通过标准地每木调查,结合一元材积表测定计算胡杨林的林分蓄积量,结果显示:胡杨的一元材积方程为V=0.000484469d2.011854,将各径阶相应单株平均材积按径阶大小顺序排列成表即为一元材积表;4块样地林分平均直径分别为:15.1、15.0、13.7、15.9 cm,在株数累积分布曲线上所对应的株数累积百分数的位置分别为62.9%、60.9%、62.9%、58.24%;4块样地蓄积量分别为275.064 5、227.427 6、230.9296、288.5165 m3/hm2,人工胡杨林分蓄积量为255.4845 m3/hm2。

Based on the data of Populus euphratica in Alar reclamation,the one-way volume table of Populus euphratica was established by using regression analysis.The stand volume of the artificial Populus euphratica stand was measured and calculated based on tally combining with one-way one-way volume table.The results show that the one-way volume equation of Populus euphratica was V=0.000484469d2.011854,which was applied to establish one-way volume table.The average diameter at breast height of four sample-plots were respectively 15.1、15.0、13.7、15.9 cm,and they were relative to cumulative percentage 62.9%,60.9%,62.9%,58.24% tree number curve of stands cumulative diameter distribution;The stand volume of four sample-plot were respectively 275.0645,227.4276,230.9296,288.5165 m3/hm2,and the stand volume of the artificial Populus euphratica stand was 255.4845 m3/hm2.