Discussion on key issues of carbon footprint accounting for wool products.

The whole life cycle of wool products is long and involves many inputs and outputs. There are many issues that need to be discussed and solved in the carbon footprint accounting of wool products. In this paper, key issues such as system boundary, calculation method, accounting data, and allocation method are analyzed and discussed to accurately account for the carbon footprint of wool products. The results show that when accounting for the partial carbon footprint of wool products, the system boundary endpoint of the "gate" is more operable. The model estimation method used to calculate the carbon footprint of sheep rumination needs further improvement in feed intake prediction and methane conversion coefficient. Clarifying the carbon sequestration and carbon transfer mechanism and accurately tracing the source of carbon elements in wool can quantify the carbon sequestration effect of wool products. The data should be prioritized in the order of site-specific data, primary data, and secondary data. The protein mass allocation method can better allocate wool and co-products in the raw material production stage. A full and systematic analysis of the key issues of the carbon footprint accounting for wool products can ensure the effectiveness and comparability of the carbon footprint accounting results and contribute to the green and low-carbon development of the wool industry. [Display omitted] • System boundaries, accounting data and calculation methods of wool products' carbon footprint were discussed. • Allocation methods for wool products' carbon footprint calculation were explored. • Quantify methods for carbon footprint of rumination and excreta were analyzed. [ABSTRACT FROM AUTHOR]