Estimation of stump losses in Popolus deltoids and Pinus taeda plantations in west of Guilan

Document Type : Research Paper

Authors

Department of Forestry, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Iran.

10.22059/jfwp.2025.376699.1294

Abstract

The aim of this study was to evaluate changes in the height and stump losses of Populus deltoides and Pinus taeda trees in a western plantation of Guilan Province. For this purpose, using a selective sampling method, 209 P. deltoides and 200 P. taeda trees were selected across three slope classes: 0–15%, 15–30%, and >30%. Two-way ANOVA and Duncan tests were used to analyze the data. The results showed that the mean stump heights of P. deltoides in the three slope classes were 17.31, 25.43, and 27.87 cm, respectively, while those of P. taeda were 17.04, 17.30, and 18.08 cm. The two-way ANOVA indicated a significant difference in stump height and tree volume between slope classes and species. The Duncan test further revealed a significant difference in the stump height and volume of P. deltoides between the 15–30% and >30% slope classes compared to the 0–15% class. However, no significant difference was found in the stump height and volume of P. taeda across the three slope classes. The volume of wood loss from stumps was 8.96 m³ per hectare for P. deltoides and 7.36 m³ per hectare for P. taeda, with estimated values of 600,320,000 and 353,280,000 rials per hectare, respectively. Reducing stump height not only helps recover the monetary value of the wood but also improves the efficiency of subsequent operations.

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Main Subjects

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Forest and Wood Products
Volume 77, Issue 4
March 2025
Pages 327-337

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