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- W2977169097 abstract "<ja:p>The effect of harvester operator tree selection or prior tree marking in thinning operations on satisfactory results and performance has been widely discussed. In harvester operator tree selection, the machine operator decides on the fly which trees are selected to remain or cut. The objective of the study was to analyze the effect of prior tree marking, thinning method and topping diameter on harvester performance in low-diameter thinning operations. The entire thinning operation was captured using video technology. Overall, 2.36 ha divided into 48 plots with 5202 trees were thinned with an average diameter at breast height (dbh) over bark for all plots of between 12.5 and 14.7 cm. In total, 3122 trees were harvested, resulting in 60% removal of stem number over all plots. The harvester achieved a mean productivity of 7.38 m PMH with 1.48 m PMH SEM, with stem volume having the major influence on harvesting productivity. Prior tree marking, topping and thinning method did not significantly affect productivity. Without prior tree marking by the foresters, harvesting removal was shifted toward lower diameters. Within the unmarked plots, 7.0% of the residual trees were damaged compared with 3.2% in marked plots.<ja:sup>3</ja:sup><ja:sub>0</ja:sub><ja:sup>â1</ja:sup><ja:sup>3</ja:sup><ja:sub>0</ja:sub><ja:sup>â1</ja:sup></ja:p>" @default.
- W2977169097 created "2019-10-03" @default.
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- W2977169097 date "2019-01-01" @default.
- W2977169097 modified "2023-10-14" @default.
- W2977169097 title "Effect of prior tree marking, thinning method and topping diameter on harvester performance in a first thinning operation – a field experiment" @default.
- W2977169097 doi "https://doi.org/10.14214/sf.10178" @default.
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