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Does WPC affect soil carbon sequestration in a landscape tree box?
Wood-Plastic Composite (WPC) is increasingly used in urban landscaping, including tree boxes, due to its durability and sustainability. However, its impact on soil carbon sequestration remains a topic of interest. WPC, a blend of wood fibers and plastic, may alter soil microbial activity and organic matter decomposition rates. Studies suggest that WPC can reduce soil exposure to extreme temperatures, potentially slowing carbon loss. Yet, its impermeability might limit root growth and organic carbon input. In urban settings, tree boxes with WPC could balance carbon storage with structural longevity, but long-term effects require further research. Sustainable urban forestry must weigh material benefits against ecological outcomes.
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