FEEDBACK

An Important Part of Wood Formation Mechanism Secondary Xylem Development(2)Angiospermous Trees(Original Research)

Price: $63.10 $44.34 (Save $18.76)
Add to Wishlist

Author: Yin Sici;
Language: English
Page: 318
Publication Date: 09/2018
ISBN: 9787030571519
Publisher: Science Press
Series: An Important Part of Wood Formation Mechanism
Details
It is generally considered that xylem of main stem, roots and branches of a tree is its woody part. Xylem is an academic term called in life science; wood is the name for its application as a material. According to the sources of meristematic cells, xylem is divided into categories of primary and secondary xylem. The primary xylem is located near the pith, which is in the center of stem. The primary xylem is very thin, and it is hardly distinguished from the true pith by a magnifying glass. The combinative volume ofthe primary xylem and the true pith is very small, and remains the same; but the secondary xylem increases outwards year by year, and becomes the main part of xylem.
The life period of the major component cells of secondary xylem is only a few months. However, the life of secondary xylem is long as the tree, which is reflected in the successive formation ofwood cells. Secondary xylem development is a self-changing process throughout its life controlled by heredity. For a tree, wood formation takes place in the developing process of secondary xylem. Secondary xylem development and wood formation are two aspects of the same process. Wood formation could be realized from three hierarchies, including the ultramicro, the micro and the macro hierarchies. The micro hierarchy is about the formation of major component cells of wood. It involves cell division, cell volume increase and feature formation of cell wall. The ultramicro hierarchy is about systhesis and precipitation process of organic ingredients of cell wall, i.e. the final construction forming. Many achievements about wood formation have been got in disciplines of forestry, fiber chemistry and wood science in the ultramicro and micro hierarchies. The wood differences within an individual tree have been called "variation" in forestry and wood science. The study about this respect is still limited to the structural and performance differences of some appointed local positions within an individual tree; however, the formation mechanism of this difference has not been involved. This lack of research has led to that a phenomenonsecondary xylem development, which is very important for forestry science, has been covered up for a long time. The fact that wood is formed in the long term life change of secondary xylem has not been disclosed. This subject is the study on the special theme, and the essence ofits result is an important part of wood formation mechanism.
Table of Contents
1 Introduction 1
2 The role of related disciplines and the progress in application 8
3 Experimental measurement and material 23
4 Diagrams of the developmental process of secondary xylem 36
5 Developmental change of fiber morphology in secondary xylem elaboration (Ⅰ)fiber length 43
6 Developmental change of fiber morphology in secondary xylem elaboration (Ⅱ)fiber diameter 58
7 Developmental change of fiber morphology of secondary xylem (Ⅲ) ratio of fiberlength to diameter 78
8 Developmental change of morphological factors of vessel cell during secondaryxylem elaboration 90
9 Developmental change of specific gravity during secondary xylem elaboration 108
10 Developmental changes of wood mechanical properties in secondary xylemelaboration 133
11 Developmental change of wood shrinkage property in secondary xylem elaboration 156
12 Developmental changes of the straticulate thickness of growth sheaths duringsecondary xylem elaboration 174
13 Developmental change of secondary xylem during the height growth of the tree stem 203
14 Developmental changes of green wood volume and oven-dry weight of the stemwood during secondary xylem elaboration 217
15 Comparison on developmental changes among root, branch and stem 230
16 Review and application prospect in rethought 286
Supplemental material Ⅰ 301
Supplemental material Ⅱ 310
Sample Pages Preview
Sample pages of An Important Part of Wood Formation Mechanism Secondary Xylem Development(2)Angiospermous Trees(Original Research) (ISBN:9787030571519)
Sample pages of An Important Part of Wood Formation Mechanism Secondary Xylem Development(2)Angiospermous Trees(Original Research) (ISBN:9787030571519)
Sample pages of An Important Part of Wood Formation Mechanism Secondary Xylem Development(2)Angiospermous Trees(Original Research) (ISBN:9787030571519)
Sample pages of An Important Part of Wood Formation Mechanism Secondary Xylem Development(2)Angiospermous Trees(Original Research) (ISBN:9787030571519)

 
An Important Part of Wood Formation Mechanism Secondary Xylem Development(2)Angiospermous Trees(Original Research)
$44.34