Journal
ANNALS OF FOREST SCIENCE
Volume 66, Issue 4, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/forest/2009025
Keywords
East Asia; Europe; forest monitoring; quality assurance
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The quality of monitoring is defined by its ability to provide data that (i) allow estimates of the status of the target resource with defined precision level, (ii) permit change detection with defined power, and (iii) are comparable through space and time. To achieve these requirements a Quality Assurance (QA) perspective is essential. To what extent QA was considered and data quality achieved in international forest monitoring programmes in East Asia and Europe? What is missing? Past and present QA activity in forest monitoring in East Asia and Europe revealed that most attention was given to evaluate and promote comparability of measurements, with special emphasis on analytical chemistry. Much less attention was given to field sampling and to the overall monitoring design. QA approaches were unbalanced among the various investigations, and several problems with data comparability remained over years. Despite considerable work on data quality control, parts of the monitoring process are still poorly covered by QA and revealed weaknesses in design and implementation. More comprehensive, formal and stringent QA procedures are necessary in international monitoring initiatives. Steps currently being undertaken for a more comprehensive QA approach are presented.
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