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| Ecological Efficiency Measurement of Five Paper Making Countries Based on Super-Efficiency SBM-ML Model |
| Received:November 05, 2024 |
| DOI：10.11980/j.issn.0254-508X.2025.02.006 |
| Key Words:paper industry ecological efficiency super-efficiency SBM model Malmquist-Luenberger index undesirable output |
| Fund Project:江西省自然科学基金管理科学项目（No 20232BAA10011）；江西省重点研发计划重点项目（No 20232BBG70001）。 |
| Author Name | Affiliation | Postcode | | LIU Shasha | Jiangxi Provincial Key Lab of Greenhouse Gas Accounting and Carbon Reduction, Institute of Energy Research, Jiangxi Academy of Sciences, Nanchang, Jiangxi Province, 330096
Jiangxi Carbon Neutralization Research Center, Nanchang, Jiangxi Province, 330096 | 330096 | | QIAO Yuanbo | Institute for Studies in County Development, Shandong University, Qingdao, Shandong Province, 266237 | 266237 | | XIE Yunsheng | Jiangxi Provincial Key Lab of Greenhouse Gas Accounting and Carbon Reduction, Institute of Energy Research, Jiangxi Academy of Sciences, Nanchang, Jiangxi Province, 330096
Jiangxi Carbon Neutralization Research Center, Nanchang, Jiangxi Province, 330096 | 330096 | | DENG Huijing* | Jiangxi Provincial Key Lab of Greenhouse Gas Accounting and Carbon Reduction, Institute of Energy Research, Jiangxi Academy of Sciences, Nanchang, Jiangxi Province, 330096
Jiangxi Carbon Neutralization Research Center, Nanchang, Jiangxi Province, 330096 | 330096 |
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| Abstract:In the context of global climate change， the efficiency of resource and environmental utilization in the pulp and paper industry urgently needs to be improved. Based on the panel data from 2010 to 2019 of the top five papermaking countries—the united states， China， Japan， Brazil， and Canada， this study measured the ecological efficiency of the pulp and paper industries using the super-efficiency Slack-Based Measure （SBM） model that incorporated undesirable outputs. The Malmquist-Luenberger （ML） index model was employed to explore its temporal variation characteristics. The results showed that significant variations in ecological efficiency among these countries， each exhibiting distinct evolutionary patterns： the average ecological efficiency over ten years for the United States， Japan， Brazil， Canada， and China was 0.932 7， 0.895 1， 0.754 1， 0.485 3， and 0.346 2， respectively. The United States’ pulp and paper industries showed a fluctuating upward “W” shaped trend， while China’s demonstrated a year-by-year increasing trend， Japan and Brazil’s papermaking industries displayed a downward and then upward trend， Canada’s pulp and paper industries experienced declining followed by a stable trend year by year. The variations in ecological efficiency among these countries’ pulp and paper industries were influenced by efficiency improvements and technological advancements in different manners： the ML index of ecological efficiency in the pulp and paper industries of the United States， Japan， Brazil， and Canada was more significantly impacted by the Technology Change （TC） index， whereas China’s was more influenced by the Efficiency Change （EC） index. On the one hand， resource utilization and management significantly affected ecological efficiency levels， while on the other hand， policies and markets exerted immense and sustainable impacts. Finally， suggestions for the future development of the pulp and paper industry were proposed in terms of technological innovation， resource utilization management， and pollutant prevention and control. |
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