会议名称：“2022世界木材日”研讨会暨第四届国际林联（IUFRO）林产品文化研究组讨论会
会议时间：2022年3月21日

报告嘉宾：Bernadette Nanayakkara
嘉宾简介：新西兰皇家研究院林业研究所（SCION）植物形态学和生理学团队负责人

摘要：

NZ has shown enormous success in the domestication of Pinus radiata, and it is considered as a model for other plantation species. Combination of improved breeds, silviculture strategies, and optimal site conditions, Pinus radiata plantations can yield mean annual increments of 25 m3/ha/yr, or even more, in relatively shorter rotations of 25-30 years. In addition, Pinus radiata is very pliant silviculturally and produces a versatile wood, capable of meeting a wide range of products, including appearance and structural lumber, panel products, engineered wood products and pulp and paper. However, variability, both within and between stems, coupled with a re duced rotation age and a higher proportion of juvenile wood, are challeng es that the industry is facing.

Wood quality has been one of Scion's leading traditional areas of focus. As a result, it has accumulated a large amount of information on genetics, en vironment and silviculture (GxExS) effects on Pinus radiata wood properties, which subsequently have been incorporated into tree average wood prop erty models (density, stiffness and spiral grain).

Traditionally, wood property measurements have focussed on average values or proportions of variation, which obscures the absolute variations that exist within stems. Scion's new tools, such as DiscBot, can characterise the realistic variability of wood properties such as density, acoustic velocity, spiral grain, and wood chemistry, within the entire stem, unlike stem aver-86 age wood properties. These wood property distribution maps can be used to predict end-product properties such as stiffness, strength and stability, which are vital for structural timber, by simulation-based modelling. This approach links forest management decisions to product recovery, and can be used to determine the impact of different combinations of GxExS on end-product quality.

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