Global land and carbon consequences of mass timber products

Kai Lan, Alice Favero, Yuan Yao (), Robert O. Mendelsohn () and Hannah Szu-Han Wang
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Kai Lan: Yale University
Alice Favero: RTI International
Yuan Yao: Yale University
Robert O. Mendelsohn: Yale University
Hannah Szu-Han Wang: Yale University

Nature Communications, 2025, vol. 16, issue 1, 1-12

Abstract: Abstract Mass timber products can reduce greenhouse gas emissions by replacing steel and cement. However, the increase in wood demand raises wood prices, and the environmental consequences of these market changes are unclear. Here we investigate the global carbon and land use impacts of adopting mass timber products, focusing on cross-laminated timber as a case study. Our results show that higher wood prices reduce the production of traditional wood products but expand productive forestland by 30.7–36.5 million hectares from 2020 to 2100 and lead to more intensive forest management. If the cumulative global cross-laminated timber production reaches 3.6 to 9.6 billion m3 by 2100, long-term carbon storage can increase by 20.3–25.2 GtCO2e, primarily in forests (16.1–17.7 GtCO2e) and in cross-laminated timber panels (4.1–8.1 GtCO2e). Including emission reductions from steel, cement, and traditional wood products, the net reduction of life-cycle greenhouse gas emissions will be 25.6–39.0 GtCO2e.

Date: 2025
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DOI: 10.1038/s41467-025-60245-y

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