Duncanson L, Armston J, Disney M, Avitabile V, Barbier N, Calders K, Carter S, Chave J, Herold M, Crowther T W, Falkowski M, Kellner J R, Labrière N, Lucas R, MacBean N, McRoberts R E, Meyer V, Næsset E, Nickeson J E, Paul K I, Phillips O L, Réjou-Méchain M, Román M, Roxburgh S, Saatchi S, Schepaschenko D, Scipal K, Siqueira P R, Whitehurst A, Williams M
1Department of Geographical Sciences, University of Maryland, College Park, 2181 Lefrak Hall, College Park, MD 20742 USA.
2Department of Geography, University College London, Gower Street, London, WC1E 6BT UK.
Surv Geophys. 2019;40(4):979-999. doi: 10.1007/s10712-019-09538-8. Epub 2019 May 30.
Several upcoming satellite missions have core science requirements to produce data for accurate forest aboveground biomass mapping. Largely because of these mission datasets, the number of available biomass products is expected to greatly increase over the coming decade. Despite the recognized importance of biomass mapping for a wide range of science, policy and management applications, there remains no community accepted standard for satellite-based biomass map validation. The Committee on Earth Observing Satellites (CEOS) is developing a protocol to fill this need in advance of the next generation of biomass-relevant satellites, and this paper presents a review of biomass validation practices from a CEOS perspective. We outline the wide range of anticipated user requirements for product accuracy assessment and provide recommendations for the validation of biomass products. These recommendations include the collection of new, high-quality in situ data and the use of airborne lidar biomass maps as tools toward transparent multi-resolution validation. Adoption of community-vetted validation standards and practices will facilitate the uptake of the next generation of biomass products.
几个即将开展的卫星任务有核心科学要求，以生成用于精确绘制森林地上生物量的数据。很大程度上由于这些任务数据集，预计在未来十年中，可用生物量产品的数量将大幅增加。尽管生物量测绘对于广泛的科学、政策和管理应用具有公认的重要性，但对于基于卫星的生物量地图验证，仍不存在被业界接受的标准。地球观测卫星委员会（CEOS）正在制定一项协议，以便在下一代与生物量相关的卫星出现之前满足这一需求，本文从CEOS的角度对生物量验证实践进行了综述。我们概述了产品精度评估的广泛预期用户需求，并为生物量产品的验证提供建议。这些建议包括收集新的高质量实地数据，以及使用机载激光雷达生物量地图作为实现透明多分辨率验证的工具。采用经过业界审核的验证标准和实践将有助于下一代生物量产品的应用。
