There is an urgent need for quantifying the terrestrial carbon sink in the context of global carbon emissions. However, neither the flux measurements, nor the national wood balances fulfil this purpose. In this discussion article we point at various shortcomings and necessary improvements of these approaches in order to achieve a true quantification of the carbon exchange of land surfaces. We discuss the necessity of incorporating all lateral fluxes, but mainly the export of biomass by harvest, into the flux balance and to recognize feedbacks between management and fluxes to make flux measurements compatible with inventories. At the same time, we discuss the necessity that national reports of wood use need to fully recognize the use of wood for energy use. Both approaches of establishing an ecosystem carbon balance, fluxes and inventories, have shortcomings. Including harvest and feedbacks by management appears to be the main requirement for the flux approach. A better quantification of wood use for bioenergy seems a real need for integrating the national wood balances into the global carbon cycle.

中文翻译：

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净生态系统生产力和清单在气候变化研究中的作用：对“净生态系统生产力与收获”的需求，NEPH

在全球碳排放的背景下，迫切需要量化陆地碳汇。但是，通量测量和国家木材天平都无法达到此目的。在这篇讨论文章中，我们指出了这些方法的各种缺点和必要的改进，以实现对陆地表面碳交换的真实量化。我们讨论了将所有侧向通量（但主要是按收获量输出的生物量）纳入通量平衡的必要性，并认识到管理和通量之间的反馈以使通量测量与库存兼容。同时，我们讨论了国家木材使用报告必须充分认识到木材用于能源使用的必要性。建立生态系统碳平衡，通量和清单的两种方法，有缺点。包括收获和管理层的反馈意见似乎是通量方法的主要要求。更好地量化木材用于生物能源的使用是将国家木材平衡纳入全球碳循环的真正需要。