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Estimation Methods for Harvested Wood Products: Approaches and Data Needs

This document analyzes various estimation methods for Harvested Wood Products (HWP), focusing on method types, applicability, and data requirements. It discusses components necessary for effective estimation, including flux data derived from surveys and stock change calculations. The paper highlights the importance of understanding stock and flow variables, using data from U.S. HWP removals in 2002 as a case study. It provides a comprehensive comparison of approaches, emphasizing the need for reliable data to enhance accuracy in estimating outputs and stock changes in a sustainable forest management context.

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Estimation Methods for Harvested Wood Products: Approaches and Data Needs

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  1. Comments onHWP estimation methods Ken Skog Kim Pingoud

  2. Methods Topics • Method types • Applicability of methods to approaches • Data needs and availability • Components(variables) needed to estimate for any approach

  3. Methods Types • Flux data – Input from surveys • Output: • Use lifetimes to estimate outputs • Use surveys to estimate outputs • Stock data c) Estimate stock change between two inventories

  4. Methods Applicability

  5. Data Availability

  6. Variables needed to estimate for any approach

  7. EB EC ED C A B D Ex I Harvested Wood Products: Stocks and flows

  8. Harvested Wood Products: Comparison of Approaches U.S. HWP Removals in 2002 = 59 Tg C Variables from U.S. HWP Estimation Methods Approaches: Production (A+B) = 59 Stock Change (A+C) = 68 Atmospheric Flow (A + C – (D – E)) = 62

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