Compression stress in opposite wood of angiosperms: observations in chestnut, mani and poplar
作者： Bruno Clair , Tancrède Almeras , Junji Sugiyama
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摘要: In order to face environmental constraints, trees are able re-orient their axes by controlling the stress level in newly formed wood layers. Angiosperms and gymnosperms evolved into two distinct mechanisms: former produce a with large tension pre-stress on upper side of tilted axis, while latter compression lower side. both cases, difference between this that opposite side, light tension, generates bending axis. However, values were sometimes measured angiosperms. By analysing old data chestnut mani new poplar, study shows these not measurement artefacts. This reveals generating contributes improve performance re-orientation mechanism.
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