《Table 2 Age groups of P.canadensis forest》

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《Discussion on Individual Expected Maturity of Populus canadensis Moench》

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Different from previous studies on P.tomentosa，2 different maturity ages were obtained in this study（3 maturity ages for P.tomentosa），namely 26 years for small diameter timer and 36years for middle and large diameter timer.The difference was probably caused by the fact that the sample tree in this study was the average tree，while the sample tree for the study on P.tomentosa was dominant tree species.The differences in the growth vigor resulted in the different results.The division of the age groups was shown in Table 2.

图表编号	XD00183131400 严禁用于非法目的
绘制时间	2018.10.01
作者	Xingyun GAO、Mingliang WEI、Kehua WANG、Hongbo QIAO、Dequan ZHANG、Dejin DONG
绘制单位	Forestry Survey and Planning Institute of Shandong Province、Forestry Survey and Planning Institute of Shandong Province、Forestry Survey and Planning Institute of Shandong Province、Forestry Survey and Planning Institute of Shandong Province、Forestry Survey
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