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Title: | Assessing Deadwood Using Harmonized National Forest Inventory Data | Authors: | Rondeux, Jacques Bertini, Roberta Bastrup-Birk, Annemarie Corona, Piermaria Latte, Nicolas McRoberts, Ronald E. Ståhl, Göran Winter, Susanne Chirici, Gherardo |
Keywords: | Reference definitions;Bridging functions;Deadwwod attributes;Biodiversity indicator;Carbon pool | Issue Date: | 2012 | Publisher: | the Society of American Foresters | Source: | Rondeux, J. et al. 2012. Assessing Deadwood Using Harmonized National Forest Inventory Data. "Forest Science" 58 (3): 269-283 | Abstract: | 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. Volume differences 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%). |
Description: | L'articolo è disponibile sul sito dell'editore www.safnet.org |
URI: | http://hdl.handle.net/2067/2312 | ISSN: | 0015-749X | DOI: | dx.doi.org/10.5849/forsci.10-057. |
Appears in Collections: | DiSAFRi - Archivio della produzione scientifica |
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Forest_Science_Deadwood_Rondeux et al_1.pdf | 35.42 kB | Adobe PDF | View/Open |
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