中山大学发表最新Science论文

Core Viewpoint - The article emphasizes the urgent need for global carbon dioxide reduction and enhancing ecosystems' carbon absorption capabilities, highlighting afforestation as a cost-effective natural climate solution [4]. Group 1: Research Findings - A study published in the journal Science quantifies the carbon sequestration potential of soil during global forest restoration, integrating ecological, climatic, and policy factors to redefine afforestation's role in climate change mitigation [4][6]. - The research developed a machine learning model to quantify soil carbon changes post-afforestation, revealing a coexistence of carbon increase and loss primarily in surface soil (0-30 cm) [6]. - If afforestation is limited to areas that avoid unintended warming effects and ensure water resources and biodiversity, approximately 389 million hectares could sequester 39.9 Pg of carbon by 2050, significantly lower than previous estimates [6]. Group 2: Policy Implications - If land is further restricted to existing policy commitments (120 million hectares), the carbon sequestration potential drops to 12.5 Pg [6]. - The study suggests that to achieve larger-scale climate mitigation, there is an urgent need to expand dedicated afforestation areas and enhance commitments from countries with significant undeveloped potential [6][8]. - The findings provide actionable insights for optimizing land use policies and afforestation strategies to maximize climate benefits [8].