Wei et al. Carbon Balance and Management
(2023) 18:1
Page 3 of 10
Fig. 1 The structure, carbon pools, and carbon flux processes in the Wood Products Carbon Storage Estimator (WPsCS Estimator). Note that the biochar is non-energy use biochar
Methods Wood products carbon storage estimator
(i.e., paper, building, exterior-use, and home application), and the paper carbon subpool is further classified into newspaper, graphic paper, packing paper, and household paper. Finally, the landfill carbon pool is accounted for using four subpools: waste paper, building, exterior use, and home application materials carbon pools. In WPsCS Estimator, the annual carbon input to the charcoal carbon pool consists of the production of non- energy use biochar and the charcoal formed by biofuel combustion (Fig. 1). Biofuel combustion directly releases most of the carbon to the atmosphere while, at the same time, a small portion of biomass is thermochemically converted to recalcitrant charcoal. To estimate the char- coal created by biofuel burning, a combustion efficiency is employed in the estimator. The combustion efficiency represents the portion of biofuel that is completely burned, and the remainder is converted to charcoal. Because the four paper products in the paper carbon pool are significantly different in their service lives, they
To account for the carbon stored in wood products including end-use products (e.g., building, furniture, and paper), charcoal, and waste wood materials in landfills, we developed the Wood Products Carbon Storage Esti- mator (WPsCS Estimator). WPsCS Estimator is operated at an annual time scale. The input data to run the Esti- mator consists of the annual consumption or production of wood product types within the user-defined system boundary including bioenergy, biochar, paper products (i.e., newspaper, graphic paper, packing paper, and house- hold paper), building, exterior use, and home applica- tion. These wood product types are aggregated in three carbon pools: charcoal, end-use products, and landfill carbon (Fig. 1). According to the similarity of service life for different end-use wood products, the end-use wood products carbon pool is categorized to four subpools
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