4.5 Article

On the accuracy of international forest product statistics

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FORESTRY
卷 91, 期 5, 页码 541-551

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OXFORD UNIV PRESS
DOI: 10.1093/forestry/cpy025

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  1. USDA Forest Service [17-JV-11330143-087]

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To judge the accuracy of international forest product statistics, we checked the consistency of the reported consumption of wood and fiber with the production of wood products. Using goal programming, we estimated for 180 countries the consumption of industrial roundwood and of paper-making fibers nearest to the reported consumption, given the reported production of sawnwood, wood-based panels, pulp and paper and paperboard, and prior estimates of the input-output coefficients. The results suggested that for the 3-year average 2013-2015, industrial roundwood consumption was under-reported in 57 countries by a total amount of 368 million m3 and over reported in 44 countries by a total of 16 million m3. The largest under-reporting was for China for which the reported consumption of industrial roundwood was 237 million m3, or 57 per cent less than the estimated. The largest over reporting was for India, by 11 million m3, or 24 per cent. For paper-making fibers, reported consumption was less than the estimated in 62 countries for a total of 11.3 million t, and it was more than the estimated in 61 countries, for a total of 3.2 million t. The largest under-reported amount was for India: 2.6 million t, or 20 per cent of the estimated, a difference that was entirely attributed to the under-reporting of recovered paper consumption. The largest over reported consumption of paper-making fibers was for Spain, nearly 1 million t, or 24 per cent, attributed to over reporting of recovered paper consumption. The main source of the discrepancies was in the production statistics rather than trade. Only in some instances was the presumption of illegal logging consistent with the discrepancy, or lack thereof, between reported and estimated consumption of industrial roundwood.

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