| Autor: |
Hall AL; Energy & Resources Group University of California─Berkeley 345 Giannini Hall Berkeley, California 94720, United States., Ponomareva AI; Energy & Resources Group University of California─Berkeley 345 Giannini Hall Berkeley, California 94720, United States., Torn MS; Energy & Resources Group University of California─Berkeley 345 Giannini Hall Berkeley, California 94720, United States.; Climate and Ecosystem Sciences Division Lawrence Berkeley National Laboratory Berkeley, California 94720, United States., Potts MD; Department of Environmental Science, Policy, and Management University of California─Berkeley 130 Mulford Hall Berkeley, California 94720, United States.; Carbon Direct, Incorporated 17 State Street New York, New York 10004, United States. |
| Abstrakt: |
Contemporary resource management is doubly burdened by high rates of organic material disposal in landfills, generating potent greenhouse gases (GHG), and globally degraded soils, which threaten future food security. Expansion of composting can provide a resilient alternative, by avoiding landfill GHG emissions, returning valuable nutrients to the soil to ensure continued agricultural production, and sequestering carbon while supporting local communities. Recognizing this opportunity, California has set ambitious organics diversion targets in the Short-Lived Climate Pollutant Law (SB1383) which will require significant increases (5 to 8 million tonnes per year) in organic material processing capacity. This paper develops a spatial optimization model to consider how to handle this flow of additional material while achieving myriad social and ecological benefits through compost production. We consider community-based and on-farm facilities alongside centralized, large-scale infrastructure to explore decentralized and diversified alternative futures of composting infrastructure in the state of California. We find using a diversity of facilities would provide opportunity for cost savings while achieving significant emissions reductions of approximately 3.4 ± 1 MMT CO 2 e and demonstrate that it is possible to incorporate community protection into compost infrastructure planning while meeting economic and environmental objectives. |
