Abstract/Details

Caractérisation de bois raméaux fragmentés et indices de décomposition

Tissaux, Jean-Claude Rene Paul. 
 Universite Laval (Canada) ProQuest Dissertations Publishing,  2001. MQ60754.

Abstract (summary)

Mulch application of Ramial Chipped Wood (RCW) on a fallow soil did not show any significant differences between control and treatment for different soil properties (humic acids, enzymes, microbial carbon and nitrogen). An in vitro incubation showed that RCW decomposition follows two distinct stages. During the first stage, an important mass loss was observed for easily degradable and leachable organic compounds. For this stage, C:N ratio is a good indicator of decomposition and explains 79% of the variation of the mass loss. During the second stage, the role of mass loss decreases, due to the presence of recalcitrant residual organic compounds (lignin and condensed polyphenols). Lignin:N and lignin+polyphenols:N ratios explain respectively 67% and 70% of the variation of the total mass loss, while C:N ratio explains no more than 48%. Mixing of chipped wood from different tree species accelerates decomposition. Mixing of various coniferous needles, however, exerts an antagonistic effect on decomposition.

Indexing (details)


Subject
Forestry
Classification
0478: Forestry
Identifier / keyword
Biological sciences; French text
Title
Caractérisation de bois raméaux fragmentés et indices de décomposition
Author
Tissaux, Jean-Claude Rene Paul
Number of pages
123
Degree date
2001
School code
0726
Source
MAI 40/01M, Masters Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
978-0-612-60754-5
Advisor
Camire, Claude
University/institution
Universite Laval (Canada)
University location
Canada
Degree
M.Sc.
Source type
Dissertation or Thesis
Language
French
Document type
Dissertation/Thesis
Dissertation/thesis number
MQ60754
ProQuest document ID
304752753
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
https://www.proquest.com/docview/304752753/abstract