<abstract xmlns="http://www.w3.org/1999/xhtml">Stem form is the short name of the tree trunk shape. Stem form determines the quantity and quality of trunk volume, and affects forest timber volume and stand merchantable volume. Based on <italic>Populus deltoides</italic> Bartr. ex Marsh. in the Dongting Lake region of Hunan Province in China, changes in the breast-height form factor (<italic>f</italic>1.3) and experimental form factor (<italic>f</italic>a) under different waterlogging durations and stand ages were analyzed using the two-way analysis of variance (ANOVA). The results showed that the differences in waterlogging duration for <italic>f</italic>1.3 were not significant, but were significant for <italic>f</italic>a. Tree age has significant effects on <italic>f</italic>1.3 and <italic>f</italic>a. In addition, the <italic>f</italic>a of <italic>P. deltoides</italic> grown in stands with a waterlogging duration of 24 days and 33 days were slightly larger than the other three 50, 64, 86 days, which indicated that trees grown in these stands (24, 33 days) had larger tree volumes. In addition, the waterlogging duration of longer than 86 days was not suitable for the growth of <italic>P. deltoides</italic>.</abstract>

Stem form is the short name of the tree trunk shape. Stem form determines the quantity and quality of trunk volume, and affects forest timber volume and stand merchantable volume. Based on Populus deltoides Bartr. ex Marsh. in the Dongting Lake region of Hunan Province in China, changes in the breast-height form factor (f1.3) and experimental form factor (fa) under different waterlogging durations and stand ages were analyzed using the two-way analysis of variance (ANOVA). The results showed that the differences in waterlogging duration for f1.3 were not significant, but were significant for fa. Tree age has significant effects on f1.3 and fa. In addition, the fa of P. deltoides grown in stands with a waterlogging duration of 24 days and 33 days were slightly larger than the other three 50, 64, 86 days, which indicated that trees grown in these stands (24, 33 days) had larger tree volumes. In addition, the waterlogging duration of longer than 86 days was not suitable for the growth of P. deltoides.

Effects of tree age and waterlogging duration on the form factors of eastern cottonwood (<italic>Populus deltoides</italic> Bartr. ex Marsh.)

Research Institute of Forestry Policy and Information

Forestry Studies

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Effects of tree age and waterlogging duration on the form factors of eastern cottonwood ( Bartr. ex Marsh.)

Stem form is the short name of the tree trunk shape. Stem form determines the quantity and quality of trunk volume, and affects forest timber volume and stand...

Effects of tree age and waterlogging duration on the form factors of eastern cottonwood (Populus deltoides Bartr. ex Marsh.)

Published Online: Nov 21, 2019

Page range: 58 - 67

Received: Dec 26, 2018

Accepted: Jun 17, 2019

DOI: https://doi.org/10.2478/fsmu-2019-0005

Keywords
stem form, breast-height form factor, experimental form factor

© 2019 Zheng Song, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Effects of tree age and waterlogging duration on the form factors of eastern cottonwood (Populus deltoides Bartr. ex Marsh.)

Published Online: Nov 21, 2019

Page range: 58 - 67

Received: Dec 26, 2018

Accepted: Jun 17, 2019

DOI: https://doi.org/10.2478/fsmu-2019-0005

Keywordsstem form, breast-height form factor, experimental form factor

© 2019 Zheng Song, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
stem form, breast-height form factor, experimental form factor