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基本説明
A general text covering the whole sweep of the forest industries. Starts by considering the broad question "what is wood?" by looking at the biology, chemistry and physics of wood structure; examine "wood quality"- and more.
Full Description
Samuel Johnson (of Boswell fame) said about writing, 'whatever is written without effort is in general read without pleasure' and 'the unexamined word is not worth reading.' However, even the most thoughtfully written text is unlikely to be described as a good read. This book is not an exhaustive review. Rather it is an uneven selection of examples whose interplay across disciplines hopefully illuminates what drives the practice of forest production, wood processing and consumer preferences. The choice of material is arbitrary reflecting personal biases. It is a summary of material presented to students at the NZ School of Forestry at the University of Canterbury. This book takes liberties with other peoples' ideas, weaving them into fresh themes that are at best a work in progress. The philosopher Francis Bacon argued that 'science is a debate in progress not a body of knowledge' and also 'truth emerges more readily from error than confusion'. We have taken the position that it is preferable to venture a reasoned opinion and be proved wrong than to waffle; so don't swallow every sentence - 'doubt everything'. The reader's task is to unravel the conceits of generalizing and the risks of particularizing.
Contents
The structure of wood: form and function.- Basic wood chemistry and cell wall ultrastructure.- Water in wood.- Dimensional instability in timber.- Wood quality: in context.- Wood quality: multifaceted opportunities.- Sawmilling.- Drying of timber.- Wood preservation.- Grading timber and glued structural members.- Wood-based composites: plywood and veneer-based products.- Wood-based panels: particleboard, fibreboards and oriented strand board.- Pulp and paper manufacture.- The energy sector: a hidden goliath.
