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  • Assessing the additionality of human-induced regeneration projects

    The regeneration of woody vegetation is driven by many factors, including current management, management history and climate, and picking apart the impacts of each of these factors is difficult. A recently published journal paper explores how remote sensing data, particularly from the Landsat satellite series, can be used to evaluate the impact of land management changes on the regeneration of woody vegetation. It introduces a method called "pixel-twinning", which pairs similar areas of land to compare actual conditions with a hypothetical "business-as-usual" scenario where no management changes occurred. Using this approach, the study examines 84 human-induced regeneration (HIR) projects in Queensland under Australia’s Carbon Credit Unit (ACCU) Scheme, which incentivises landholders to enhance carbon storage or reduce greenhouse gas emissions through improved land management practices.

    The researchers used persistent green data, an indicator of woody vegetation, to assess the additional benefits, or "additionality," of these projects. The results showed that while the projects provided small benefits compared to the business-as-usual scenarios, these benefits were primarily observed in areas with a history of clearing. In contrast, areas without such a history showed minimal improvement. The study highlights the importance of considering past land use and clearing history when designing and evaluating carbon market projects. The findings provide valuable insights for refining methods to assess and improve the environmental outcomes of land management and conservation initiatives. To read the full article go A pixel-twinning approach for assessing additionality: a case study of human-induced regeneration projects - ScienceDirect