Science誌の新しい研究は、2050年までにプラスチック汚染をなくすための包括的な計画を示している(A new study in Science maps out a comprehensive plan to eliminate plastic pollution by 2050)

2024-11-14 カリフォルニア大学サンタバーバラ校(UCSB)

＜関連情報＞

• https://news.ucsb.edu/2024/021690/new-study-science-maps-out-comprehensive-plan-eliminate-plastic-pollution-2050
• https://www.science.org/doi/10.1126/science.adr3837

2050年までに世界のプラスチック廃棄物の誤管理と温室効果ガス排出を削減する道筋 Pathways to reduce global plastic waste mismanagement and greenhouse gas emissions by 2050

A. Samuel Pottinger, Roland Geyer, Nivedita Biyani, Ciera C Martinez, […], and Douglas J McCauley
Science  Published:14 Nov 2024
DOI:https://doi.org/10.1126/science.adr3837

Abstract

Plastic production and plastic pollution negatively affect our environment, environmental justice, and climate change. Using detailed global and regional plastics datasets coupled with socio-economic data, we employ machine learning to predict that, without intervention, annual mismanaged plastic waste will nearly double to 121 Mt (100 – 139 Mt 95% CI) by 2050. Annual greenhouse gas emissions from the plastic system are projected to grow by 37% to 3.35 Gt CO₂ equivalent (3.09 – 3.54 CO₂e) over the same period. The United Nations plastic pollution treaty presents a unique opportunity to reshape these outcomes. We simulate eight candidate treaty policies and find that just four could together reduce mismanaged plastic waste by 91% (86% – 98%) and gross plastic-related greenhouse gas emissions by one third.