Article (Scientific journals)
Assessing deadwood using harmonized National Forest Inventory data
Rondeux, Jacques; Bertini, Roberta; Bastrup-Birk, Annemarie et al.
2012In Forest Science, 58 (3), p. 269-283
Peer reviewed
 

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Keywords :
Reference definitions; Bridging functions; Deadwood attributes; Biodiversity indicator; Carbon pool
Abstract :
[en] Deadwood plays an important role in forest ecological processes and is fundamental for the maintenance of biological diversity. Further, it is a forest carbon pool whose assessment must be reported for international agreements dealing with protection and forest management sustainability. Despite wide agreement on deadwood monitoring by national forest inventories (NFIs), much work is still necessary to clarify definitions so that estimates can be directly compared or aggregated for international reporting. There is an urgent need for an international consensus on definitions and agreement on harmonization methods. The study addresses two main objectives : to analyze the feasibility of harmonization procedures for deadwood estimates and to evaluate the impact of the harmonization process based on different definitions on final deadwood estimates. Results are reported for an experimental harmonization test using NFI deadwood data from 9,208 sample plots measured in nine European countries and the United States. Harmonization methods were investigated for volume by spatial position (lying or standing), decay classes, and woody species accompanied by accuracy assessments. Estimates of mean plot volume based on harmonized definitions with minimum length/height of 1 m and minimum diameter thresholds of 10, 12, and 20 cm were on average 3, 8, and 30% smaller, respectively, than estimates based on national definitions. Volumedifferences were less when estimated for various deadwood categories. An accuracy assessment demonstrated that, on average, the harmonization procedures did not substantially alter deadwood observations (root mean square error 23.17%).
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Agriculture & agronomy
Author, co-author :
Rondeux, Jacques ;  Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
Bertini, Roberta
Bastrup-Birk, Annemarie
Corona, Piermaria
Latte, Nicolas ;  Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
McRoberts, Ronald E.
Stahl, Göran
Winter, Susanne
Chirici, Gherardo
Language :
English
Title :
Assessing deadwood using harmonized National Forest Inventory data
Publication date :
2012
Journal title :
Forest Science
ISSN :
0015-749X
Publisher :
Society of American Foresters
Volume :
58
Issue :
3
Pages :
269-283
Peer reviewed :
Peer reviewed
Available on ORBi :
since 26 June 2012

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