Log end face image and stem tapering indicate maximum bow height on Norway spruce bottom logs
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چکیده
منابع مشابه
Compression wood in Scots pine and Norway spruce -Distribution in relation to external geometry and the impact on dimensional stability in sawn wood
Warensjö, M. 2003. Compression wood in Scots pine and Norway spruce-Distribution in relation to external geometry and the impact on dimensional stability in sawn wood. With the aid of compression wood the conifer trees are able to maintain their predetermined growth form. Compression wood is formed as soon as the tree is displaced from its normal vertical position. Trees with expressed curvatur...
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The bending and growth characteristics of large fresh stems from four silver fir (Abies alba Mill.) and three Norway spruce (Picea abies (L.) Karst.) trees were studied. Twenty logs taken from different stem heights were subjected to four-point bending tests. From the bending test records, we calculated stress-strain curves, which accounted for detailed log taper, shear deformation and self wei...
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Radial stem growth and the isotopic composition of growth rings are commonly used to quantify the effects of droughts on trees. However, often these parameters are quantified only at one stem height, e.g., 1.3 m, and it is not known how representative this is for the whole stem. This study investigated radial growth at four stem heights (1.3, 5.5, 9.8 and 14 m) of 21, and wood Δ(13)C and δ(18)O...
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Climate changes due to changes in a habitat leads to differences in the rate of decomposition and nutrient dynamics of leaflitters, which has many effects on the controlling factors of the decomposition process. In the present study, the rate of decomposition and nutrient dynamics of Norway spruce was evaluated for 363 days in the two forestation sites in the natural and foreign habitats, ...
متن کاملTreeBio - Preliminary study on traceability of tree logs using digital log end images Masterarbeit
This thesis focuses on the biometric traceability of wood logs. Biometric log traceability is at an early stage and present research treats traceability in the sawmill. State-of-the-art systems use Radio Frequency Identi cation (RFID) or plastic batches to reach log traceability from forest site to further processing companies. This work is a preliminary study on biometric log traceability usin...
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ژورنال
عنوان ژورنال: European Journal of Forest Research
سال: 2020
ISSN: 1612-4669,1612-4677
DOI: 10.1007/s10342-020-01309-0