Table 2 Parameters were adjusted to test the relative carbon benefits of three potential wood usage scenarios
From: Modeling wood product carbon flows in southern us pine plantations: implications for carbon storage
Scenario | Parameter name | Adjusted value of parameter | % change |
|---|---|---|---|
S1. Timber product transition: smaller logs preferred by sawmills (> CNS) | CNS produced | 53,252,326 t | + 78% |
Sawtimber produced | 13,313,081 t | − 56% | |
Large sawtimber produced | 0 t | − 100% | |
Furniture lifespan | 10 years | − 23% | |
Fossil fuel consumption per ton of lumber carbon produced | |||
    Procurement | 0.01986454 | + 7% | |
    Transportation | 0.01793715 | + 7% | |
    Production | 0.09434880 | + 7% | |
S2. Products are used for longer periods of time and recycled at higher rates (> Lifespan) | All product lifespans (except sanitary products, disposable food related products, packaging cartonboard, animal bedding, and landscaping) | – | + 10% |
Pallet recycling | |||
    Recycling rate | 0.8 | + 10% | |
    Number of times recycled | 5 | + 2 times | |
Paper products recycling | |||
    Corrugated boxes | 0.964 | + 5% | |
    Sanitary products | 0 | – | |
    Packaging cartonboard | 0.608 | + 40% | |
    Disposable food related products | 0.1 | + 10% | |
    Miscellaneous paper products | 0.181 | + 10% | |
    Number of times recycled | 8 | + 3 times | |
Paper products landfilling | |||
    Corrugated boxes | 0.028 | – | |
    Sanitary products | 0.656 | – | |
    Packaging cartonboard | 0.24 | − 20% | |
    Disposable food related products | 0.719 | − 10% | |
    Miscellaneous paper products | 0.478 | − 10% | |
C&D waste | |||
    Downcycling to non-structural panels | 0.129 | + 10% | |
    Landfilling | 0.622 | − 10% | |
S3. Use of potential pulpwood for bioenergy production (> Bioenergy) | Pulp logs produced | 39,724,441 t | − 39% |
CNS logs produced | 28,680,741 t | − 4% | |
Sawtimber logs produced | 28,680,741 t | − 4% | |
Large sawtimber logs produced | 6,373,498 t | − 4% | |
Veneer logs produced | 10,361,863 t | – | |
Pole logs produced | 1,384,126 t | – | |
Composite logs produced | 5,247,203 t | – | |
Bioenergy logs produced | 38,072,862 t | + 290% | |