1 Introduction
1．1 Research Background and Significance
1．1．1 China's Emission Reduction Targets and Actions
1．1．2 The Development Status of Highway Tunnel Industry in China
1．1．3 Research Backgrounds of the Tunnel Emission Reduction
1．2 Research Status and Review
1．2．1 Research Progress on Carbon Emissions from Tunnels
1．2．2 LCA Framework for the Carbon Emissions of Tunnels
1．2．3 Research Progress on LCA Uncertainty
1．3 Existing Problems
1．4 Main Research Content
References

2 Carbon Emission Quantification Theory and Modular LCA Method
2．1 Introduction
2．2 Basic Knowledge of Carbon Emissions
2．2．1 Greenhouse Gases
2．2．2 Carbon Exchange Pathway
2．3 Basic Methods for Quantifying Carbon Emissions
2．3．1 Direct Measurement Method
2．3．2 The Process Analysis Method
2．3．3 The Input-Output Method
2．3．4 The Hybrid Method
2．4 Overview of LCA
2．4．1 Objectives and Steps
2．4．2 Functional Unit and Reference Flow
2．4．3 Product System and Unit Process
2．4．4 System Boundary
2．4．5 Data Collection and Calculation
2．4．6 Environmental Effects and Assessment Methods
2．4．7 Main Features of LCA
2．5 Overview of Product Modularization
2．5．1 Concept of Modularization
2．5．2 Modular LCA Method
2．6 Conclusions
References

3 Carbon Emission Prediction Method for Tunnel Construction
3．1 Introduction
3．2 Method
3．2．1 Potential Factors Affecting Tunnel Construction Emissions
3．2．2 Overview of the Tunnels
3．2．3 Calculation Method for Tunnel Construction Emissions
3．2．4 Common Prediction Models
3．2．5 Data Analysis Method
3．3 Results
3．3．1 Carbon Emissions of Tunnel Construction
3．3．2 Factors Influencing Carbon Emissions from Tunnel Construction
3．3．3 Models Predicting Carbon Emissions from Tunnel Construction
3．4 Discussion
3．5 Conclusions
References
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4 A Modular Calculation Method for the Carbon Emissions of Highway Tunnel Construction Based on the Chinese Standard Quota
5 Uncertainty Analysis of Carbon Emissions from Highway Tunnel Construction
6 Carbon Emission Transition of Highway Tunnel Construction
7 Influence of Tunnel Lining Design Parameters on Construction Carbon Emissions
8 Carbon Emission Characteristics of Inclined Shaft Construction in Highway Tunnel