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| Multiscale Carbon Emission Accounting Evaluation and Low-carbon Transition Strategies Analysis of the Packaging Paper Industry |
| Received:January 23, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.02.012 |
| Key Words:multiscale carbon emission accounting energy conservation and emission reduction packaging paper |
| Fund Project:国家自然科学基金（22478141）；制浆造纸工程国家重点实验室开放基金资助项目（202419）。 |
| Author Name | Affiliation | Postcode | | ZHANG Tingting | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | MAN Yi | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | HAN Yulin* | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 |
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| Abstract:Among the various product categories in the paper industry， the packaging paper has a large production scale， resulting in a relatively high overall carbon emissions. Under policies such as “dual carbon” targets and “carbon emission quotas”， it faces greater pressure for carbon reduction. Considering the complex industrial chain structure of the packaging paper industry， which has both “carbon source” and “carbon sink” characteristics， traditional carbon emission assessment methods often suffer from issues such as incomparable results and low timeliness. This paper expanded the assessment framework to the environmental system based on the planetary boundaries framework theory and the process-to-planet analysis framework， tailored to the specific characteristics of the paper industry. Twelve scenarios were designed based on different quantifications and raw material compositions of packaging paper， and a multi-scale carbon emission accounting model extended to the environmental system was used for evaluation. The results showed that， during the entire lifecycle of packaging paper production， the higher the proportion of waste paper pulp in the raw materials， the higher its net carbon emissions. Simply increasing the proportion of virgin wood pulp had a limited effect on reducing net carbon emissions， while increasing the proportion of straw pulp could effectively reduce net carbon emissions. Reducing the basis weight of paper products appropriately， while ensuring their performance， could decrease resource consumption and greenhouse gas emissions. Different research boundaries could affect the results of carbon emissions assessment， and a smaller research boundary might lead to biased conclusions. |
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