摘要
高原湖泊生态修复与碳汇协同增效是碳减排的重要路径。文章采用物料清单法和碳累积效应对基于异龙湖某项目全生命周期评估碳排/汇(LCA),结果表明:(1)施工阶段碳排放占比78.41%(基底改善占该阶段98%),是减排优化重点;管护阶段碳汇2506.65 tCO_(2)e,是自身碳排放的8.4倍;(2)项目碳回收期5.1年,净碳汇累计1117.03 tCO_(2)e(CNPV=370.05 tCO_(2)e),证实生态修复的碳中和可行性;(3)沉水植物种植面积敏感系数达1.96,面积每增1%可提升碳汇1.96%,为长期减排调控关键。
Ecological restoration of plateau lakes coupled with carbon sequestration synergy represents a critical pathway for carbon emission reduction.This study,employing the Bill of Materials(BOM)method and carbon cumulative effects within a life cycle assessment(LCA)framework of the Yilong Lake restoration project,reveals:(1)the construction phase contributes 77.2%of total emissions(with substrate improvement accounting for 94%of this phase),highlighting its priority for emission reduction optimization;the maintenance phase achieves a carbon sequestration of 2506.65 tCO_(2)e,offsetting 7.5 times its own carbon emissions;(2)the project demonstrates a carbon payback period of 5.3 years and a net carbon sequestration of 1034.63 tCO_(2)e(CNPV=115.75 tCO_(2)e),confirming the carbon neutrality feasibility of ecological restoration;(3)submerged aquatic vegetation exhibits a sensitivity coefficient of 1.96,where a 1%increase in planting area enhances carbon sequestration by 1.96%,identifying it as a key leverage for long-term emission reduction.
作者
葛高岭
王书航
Ge Gaoling;Wang Shuhang(Huanjian Ecological Restoration(Beijing)Co.Ltd.,Beijing 100012,China)
出处
《工程造价管理》
2025年第4期29-34,共6页
Engineering Cost Management
关键词
高原湖泊
生态修复
累积效应
碳排放与碳汇
全生命周期
Plateau lakes
Ecological restoration
Cumulative effects
Carbon Emission and Carbon Sequestration
Life cycle
