Abstract
Growing concerns about climate change have intensified scrutiny of port operations as significant contributors to global emissions, prompting ports worldwide to reconcile environmental sustainability with operational efficiency. Yet how digital investments specifically influence environmental performance in regional maritime systems remains insufficiently understood. Existing research has examined ICT’s economic impacts and operational efficiency separately. However, limited empirical attention has been directed towards the relationship between digital transformation and carbon emission efficiency. This gap is particularly notable regarding the differential effects of ICT components and the role of governance structures. This study examines nine Chinese coastal provinces from 2008 to 2019, decomposing ICT capital into hardware, communication equipment, and software components. Using two-way fixed effects models and instrumental variables approaches, we analyse their impacts on carbon emission efficiency within regional port groups. Results indicate that ICT investment significantly enhances carbon emission efficiency, with hardware demonstrating the strongest effect, followed by communication equipment and software. The relationship operates through both direct channels and indirect pathways via functional specialisation. Digital infrastructure enables ports to develop clearer divisions of labour and achieve economies of scale, thereby reducing emissions per unit of throughput. Furthermore, port integration exhibits an inverted U-shaped moderating effect, with optimal integration levels varying across ICT components. These findings advance understanding of environmental returns to digital investment in port infrastructure, offering empirical guidance for policymakers navigating governance challenges in sustainable maritime development.
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Data availability
The datasets generated and analysed during the current study are available as supplementary files accompanying this article. Supplementary materials include the complete panel dataset (Data.xlsx) and Stata code for all statistical analyses (Analysis_Code.do). The primary data sources include publicly available statistical yearbooks and databases: China Port Yearbook, China Marine Statistical Yearbook, China Statistical Yearbook, China Electronic Information Industry Statistical Yearbook, China Energy Statistical Yearbook, China Regional Economic Statistical Yearbook, the National Bureau of Statistics website, and the EPS Global Statistical Data Analysis Platform.
References
Alamoush AS, Ballini F, Ölçer AI (2020) Ports’ technical and operational measures to reduce greenhouse gas emission and improve energy efficiency: a review. Mar Pollut Bull 160:111508
Alavi A, Nguyen H-O, Fei J, Sayareh J (2018) Port logistics integration: challenges and approaches. Int J Supply Chain Manag 7(6):389–402
Allam Z, Newman P (2018) Economically incentivising smart urban regeneration. Case study of Port Louis, Mauritius. Smart Cities 1(1):53–74
Alzahrani A, Petri I, Rezgui Y, Ghoroghi A (2021) Decarbonisation of seaports: a review and directions for future research. Energy Strategy Rev 38:100727
Belmoukari B, Audy J-F, Forget P (2023) Smart port: a systematic literature review. Eur Transp Res Rev 15(1):4
Bichou K (2006) Review of port performance approaches and a supply chain framework to port performance benchmarking. Res Transp Econ 17:567–598
Ceccobelli M, Gitto S, Mancuso P (2012) ICT capital and labour productivity growth: a non-parametric analysis of 14 OECD countries. Telecommun Policy 36(4):282–292. https://doi.org/10.1016/j.telpol.2011.12.012
Chen J, Zhang W, Song L, Wang Y (2022) The coupling effect between economic development and the urban ecological environment in Shanghai port. Sci Total Environ 841:156734. https://doi.org/10.1016/j.scitotenv.2022.156734
Cui H, Cao Y, Feng C, Zhang C (2023) Multiple effects of ICT investment on carbon emissions: evidence from China. Environ Sci Pollut Res 30(2):4399–4422. https://doi.org/10.1007/s11356-022-22160-3
Davidson S, De Filippi P, Potts J (2018) Blockchains and the economic institutions of capitalism. J Institutional Econ 14(4):639–658. https://doi.org/10.1017/s1744137417000200
Ding X, Choi Y-J (2024) The impact of port total factor productivity on carbon dioxide emissions in port cities: evidence from the Yangtze River ports. Appl Sci 14(6). https://doi.org/10.3390/app14062406
Ding X, Song J, Zhu N, Ji X (2025). Does the digital economy reduce shipping-related pollution? Evidence from coastal port cities in China. Front Mar Sci 12. https://doi.org/10.3389/fmars.2025.1538634
Du Y, Zhou J, Bai J, Cao Y (2023) Breaking the resource curse: the perspective of improving carbon emission efficiency based on digital infrastructure construction. Resour Policy 85. https://doi.org/10.1016/j.resourpol.2023.103842
Fernandez-Portillo A, Almodovar-Gonzalez M, Hernandez-Mogollon R (2020) Impact of ICT development on economic growth. A study of OECD European Union countries. Technol Soc 63. https://doi.org/10.1016/j.techsoc.2020.101420
Ferretti M, Parmentola A, Parola F, Risitano M (2017) Strategic monitoring of port authorities activities: proposal of a multi-dimensional digital dashboard. Prod Plan Control 28(16):1354–1364. https://doi.org/10.1080/09537287.2017.1375146
Ferretti M, Schiavone F (2016) Internet of Things and business processes redesign in seaports: the case of Hamburg. Bus Process Manag J 22(2):271–284. https://doi.org/10.1108/bpmj-05-2015-0079
Ha M-H, Yang Z, Notteboom T, Ng AK, Heo M-W (2017) Revisiting port performance measurement: a hybrid multi-stakeholder framework for the modelling of port performance indicators. Transp Res Part E Logist Transp Rev 103:1–16
Haini H (2021) Examining the impact of ICT, human capital and carbon emissions: evidence from the ASEAN economies. Int Econ 166:116–125
Heilig L, Lalla-Ruiz E, Voß S (2017) Digital transformation in maritime ports: analysis and a game theoretic framework. Netnomics Econ Res Electron Netw 18(2):227–254
Hering L, Poncet S (2014) Environmental policy and exports: evidence from Chinese cities. J Environ Econ Manag 68(2):296–318. https://doi.org/10.1016/j.jeem.2014.06.005
Hollen RMA, van den Bosch FAJ, Volberda HW (2015) Strategic levers of port authorities for industrial ecosystem development. Marit Econ Logist 17(1):79–96. https://doi.org/10.1057/mel.2014.28
Jia P, Ma Q, Wu T, Lu S, Kuang H (2023) Study on the efficiency of China’s regional port cluster under the integrated operation model. Res Manag 44(04):112–126. https://doi.org/10.19571/j.cnki.1000-2995.2023.04.013
Jin X, Huang S, Lei X (2024a) Research on the impact mechanism of green innovation in marine science and technology enabling dual economic circulations. Sustainability 16(19). https://doi.org/10.3390/su16198421
Jin X, Li M, Lei X (2024b) The impact of digitalization on the green development of the marine economy: evidence from China’s coastal regions. Front Mar Sci 11. https://doi.org/10.3389/fmars.2024.1457678
Joyce PJ, Finnveden G, Hakansson C, Wood R (2019) A multi-impact analysis of changing ICT consumption patterns for Sweden and the EU: indirect rebound effects and evidence of decoupling. J Clean Prod 211:1154–1161. https://doi.org/10.1016/j.jclepro.2018.11.207
Kang D, Kim S (2017) Conceptual model development of sustainability practices: the case of port operations for collaboration and governance. Sustainability 9(12). https://doi.org/10.3390/su9122333
Lei X, Xu X (2024) Storm clouds over innovation: typhoon shocks and corporate R&D activities. Econ Lett 244: 112014. https://doi.org/10.1016/j.econlet.2024.112014
Lei X, Xu X (2025) Climate crisis on energy bills: Who bears the greater burden of extreme weather events?. Econ Lett 247: 112103. https://doi.org/10.1016/j.econlet.2024.112103
Li S, Haralambides H, Zeng Q (2022) Economic forces shaping the evolution of integrated port systems—the case of the container port system of China’s Pearl River Delta. Res Transp Econ 94:101183
Lim S, Pettit S, Abouarghoub W, Beresford A (2019) Port sustainability and performance: A systematic literature review. Transp Res Part D-Transp Environ 72:47–64. https://doi.org/10.1016/j.trd.2019.04.009
Liu J, Wang X, Guo J (2021) Port efficiency and its influencing factors in the context of Pilot Free Trade Zones. Transp Policy 105:67–79. https://doi.org/10.1016/j.tranpol.2021.02.011
Liu R, Gailhofer P, Gensch C-O, Köhler A, Wolff F (2019) Impacts of the digital transformation on the environment and sustainability. Issue Paper ENV.F.1./FRA/2014/006, Öko-Institut, Berlin. https://ec.europa.eu/environment/enveco/resource_efficiency/pdf/studies/issue_paper_digital_transformation_20191220_final.pdf
Luo Z, Lv Z, Zhao J, Sun H, He T, Yi W, Liu H (2024) Shipping-related pollution decreased but mortality increased in Chinese port cities. Nat Cities 1(4):295–304. https://doi.org/10.1038/s44284-024-00050-8
Ma Q, Li S, Jia P, Kuang H (2025) Is port integration a panacea for regions green development: an empirical study of China port city. Transp Policy 160:15–28. https://doi.org/10.1016/j.tranpol.2024.10.036
Martin R, Trippl M (2017) The evolution of the ICT cluster in southern Sweden—regional innovation systems, knowledge bases and policy actions. Geogr Ann Ser B Hum Geogr 99(3):268–283. https://doi.org/10.1080/04353684.2017.1344559
MartÃnez-Moya J, Vazquez-Paja B, Maldonado JAG (2019) Energy efficiency and CO2 emissions of port container terminal equipment: evidence from the Port of Valencia. Energy Policy 131:312–319
Men L, Gan A, Chen K (2014) Prediction of carbon emissions and emission reduction countermeasures of major ports in China under the trend of green ports. Shipp Manag 36(08):6–8+11. https://doi.org/10.13340/j.jsm.2014.08.002
Min H (2022) Developing a smart port architecture and essential elements in the era of Industry 4.0. Marit Econ Logist 24(2):189
Na J-H, Choi AY, Ji J, Zhang D (2017) Environmental efficiency analysis of Chinese container ports with CO2 emissions: an inseparable input-output SBM model. J Transp Geogr 65:13–24. https://doi.org/10.1016/j.jtrangeo.2017.10.001
Nakatani R (2021) Total factor productivity enablers in the ICT industry: a cross-country firm-level analysis. Telecommun Policy 45(9). https://doi.org/10.1016/j.telpol.2021.102188
Nunn N, Qian N (2014) US food aid and civil conflict. Am Econ Rev 104(6):1630–1666
Onwuegbuchunam D, Aponjolosun M, Ogunsakin A (2021) Information & communication technology (ict) adoption in Nigerian ports terminal operations. J Transp Technol 11(3):311–324
Ozturk M, Jaber M, Imran MA (2018) Energy-aware smart connectivity for IoT networks: enabling smart ports. Wirel Commun Mob Comput. https://doi.org/10.1155/2018/5379326
Pang R (2006) Dynamic efficiency evaluation of China’s major coastal ports. Econ Res (06):92–100. Retrieved from https://kns.cnki.net/kcms2/article/abstract?v=d24vdHNzaZgPSLBVBq7kjrjcEFNwS81tuNUOHHwW1o1VyuDYZq8H11fHoQm-LzM2oBalJUSrJEVlicEtJJrmKLncC1o5qq6QY8Ykk04ylydlYYJCqklgB535TLuNybRNqq6zijOxr1_ypWLam7kPyaQ9Q2oywfoRAABp3ABlGzWYDWqB7MjnYu5svRs_E2cguoUnb9b8hRA=&uniplatform=NZKPT&language=CHS
Parola F, Pallis AA, Risitano M, Ferretti M (2018) Marketing strategies of port authorities: a multi-dimensional theorisation. Transp Res Part A Policy Pract 111:199–212. https://doi.org/10.1016/j.tra.2018.03.012
Parola F, Risitano M, Ferretti M, Panetti E (2017) The drivers of port competitiveness: a critical review. Transp Rev 37(1):116–138. https://doi.org/10.1080/01441647.2016.1231232
Parola F, Satta G, Penco L, Profumo G (2013) Emerging port authority communication strategies: assessing the determinants of disclosure in the annual report. Res Transp Bus Manag 8:134–147
Pérez I, González MM, Trujillo L (2020) Do specialisation and port size affect port efficiency? Evidence from cargo handling service in Spanish ports. Transp Res Part A: Policy Pract 138:234–249
Porter ME (1991) Towards a dynamic theory of strategy. Strateg Manag J 12(S2):95–117
Preacher KJ, Kelley K (2011) Effect size measures for mediation models: quantitative strategies for communicating indirect effects. Psychol Methods 16(2):93–115. https://doi.org/10.1037/a0022658
Pruyn J, van Hassel E (2022) Frontiers in maritime transport chains: digital and organizational innovations in maritime transport and port operations. Front Future Transp 3. https://doi.org/10.3389/ffutr.2022.869530
Ramos V, Carballo R, Alvarez M, Sanchez M, Iglesias G (2014) A port towards energy self-sufficiency using tidal stream power. Energy 71:432–444. https://doi.org/10.1016/j.energy.2014.04.098
Ren S, Hao Y, Xu L, Wu H, Ba N (2021) Digitalization and energy: How does internet development affect China’s energy consumption? Energy Econ 98. https://doi.org/10.1016/j.eneco.2021.105220
Schreyer P (2002) Computer price indices and international growth and productivity comparisons. Rev Income Wealth 48(1):15–31
Serra P, Fancello G (2020) Use of ICT for more efficient port operations: the experience of the EASYLOG project. In: Gervasi O et al. (eds) Computational Science and Its Applications–ICCSA 2020. Lecture Notes in Computer Science, vol 12255. Springer, Cham, pp 3–14. https://doi.org/10.1007/978-3-030-58820-5_1
Shabani ZD, Shahnazi R (2019) Energy consumption, carbon dioxide emissions, information and communications technology, and gross domestic product in Iranian economic sectors: a panel causality analysis. Energy 169:1064–1078. https://doi.org/10.1016/j.energy.2018.11.062
Stanley TD, Doucouliagos H, Steel P (2018) Does ICT generate economic growth? A meta-regression analysis. J Econ Surv 32(3):705–726
Sun H, Kim G (2021) The composite impact of ICT industry on lowering carbon intensity: from the perspective of regional heterogeneity*. Technol Soc 66. https://doi.org/10.1016/j.techsoc.2021.101661
Tabernacle J (1995) A study of the changes in performance of quayside container cranes. Marit Policy Manag 22(2):115–124
Talley WK (1988) Optimum throughput and performance evaluation of marine terminals. Marit Policy Manag 15(4):327–331
Tongzon JL (1995) Determinants of port performance and efficiency. Transp Res Part A Policy Pract 29(3):245–252
Usman A, Ozturk I, Hassan A, Zafar SM, Ullah S (2021) The effect of ICT on energy consumption and economic growth in South Asian economies: an empirical analysis. Telemat Inform 58. https://doi.org/10.1016/j.tele.2020.101537
Wang B, Liu Q, Wang L, Chen Y, Wang J (2023) A review of the port carbon emission sources and related emission reduction technical measures? Environ Pollut 320. https://doi.org/10.1016/j.envpol.2023.121000
Wang W, Wang C, Jin F (2018) The classification of transportation function of China’s coastal ports based on cargo structure. Geogr Res 37(3):527–538. Retrieved from //CSCD:6220675
Wu X, Wang M, Wang L (2022) Dynamic efficiency evaluation of Yangtze River Delta port cluster based on four-stage DEA-Malmquist index. Stat Decis Mak 38(02):184–188. https://doi.org/10.13546/j.cnki.tjyjc.2022.02.037
Xu B, Sendra-Garcia J, Gao Y, Chen X (2020) Driving total factor productivity: Capital and labor with tax allocation. Technol Forecast Soc Change 150. https://doi.org/10.1016/j.techfore.2019.119782
Xu Q, Zhong M, Cao M (2022) Does digital investment affect carbon efficiency? Spatial effect and mechanism discussion. Sci Total Environ 827:154321
Yang Y, Zhong M, Yao H, Yu F, Fu X, Postolache O (2018) Internet of Things for smart ports: technologies and challenges. IEEE Instrum Meas Mag 21(1):34–43. https://doi.org/10.1109/mim.2018.8278808
Yau K-LA, Peng S, Qadir J, Low Y-C, Ling MH (2020) Towards smart port infrastructures: enhancing port activities using information and communications technology. IEEE Access 8:83387–83404. https://doi.org/10.1109/access.2020.2990961
Ye S, Jiang Z, Qi X (2020) Spatio-temporal evolution of container terminal efficiency in Yangtze River Delta and its influencing factors. Geogr Res 39(08):1782–1793. https://kns.cnki.net/kcms2/article/abstract?v=d24vdHNzaZhRP0Litt1M8ts7orG5pav9dbQHbK0bFXFlvGG5FjaMQLvwttQnQr72bgeHhHZZ5Wnjb_EbU2BkgPRBPRv1eihoNnVQbn6B1AR3wZ-64g-FjiM__M17J-fS0DUIMrLWhuKwGgQ7eJw2Qrs0aP25RVzsfOkTSUE9q7srRP0o1krf7AtZ8ENJEsmuPsqrhnCNCf4=&uniplatform=NZKPT&language=CHS Retrieved from
Yeo G-T, Song D-W (2005) The hierarchical analysis of perceived competitiveness: an application to Korean container ports. J East Asia Soc Transp Stud 6:866–880
Yuen AC-l, Zhang A, Cheung W (2013) Foreign participation and competition: a way to improve the container port efficiency in China?. Transp Res Part a-Policy Pract 49:220–231. https://doi.org/10.1016/j.tra.2013.01.026
Zhang H, Lin Y (2021) Analysis of the impact of information and communication technology on the optimization of industrial structure. Manag Rev 33(12):163–175. https://doi.org/10.14120/j.cnki.cn11-5057/f.2021.12.020
Zhang Q, Yan K, Yang D (2021) Port system evolution in Chinese coastal regions: a provincial perspective. J Transp Geogr 92. https://doi.org/10.1016/j.jtrangeo.2021.103031
Zhang X, Deng J (2013) A study on port efficiency measurement and enhancement in China. J Zhejiang Univ (Humanit Soc Sci Ed) 43(04):39–51. https://link.cnki.net/urlid/33.1237.C.20130603.1548.001
Zhang Z, Song C, Zhang J, Chen Z, Liu M, Aziz F, Yap P-S (2024) Digitalization and innovation in green ports: a review of current issues, contributions and the way forward in promoting sustainable ports and maritime logistics. Sci Total Environ 912:169075. https://doi.org/10.1016/j.scitotenv.2023.169075
Zheng J, Wang X (2021) Can mobile information communication technologies (ICTs) promote the development of renewables?-Evidence from seven countries. Energy Policy 149. https://doi.org/10.1016/j.enpol.2020.112041
Zhong M-R, Cao M-Y, Zou H (2022). The carbon reduction effect of ICT: a perspective of factor substitution. Technol Forecast Soc Change 181. https://doi.org/10.1016/j.techfore.2022.121754
Zhou C, Zhang H, Ying J, He S, Zhang C, Yan J (2025) Artificial intelligence and green transformation of manufacturing enterprises. Int Rev Financ Anal 104:104330. https://doi.org/10.1016/j.irfa.2025.104330
Zhou Y, Li Z, Duan W, Deng Z (2023) The impact of provincial port integration on port efficiency: empirical evidence from China’s coastal provinces. J Transp Geogr 108. https://doi.org/10.1016/j.jtrangeo.2023.103574
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This research was supported by the Shanghai Soft Science Research Project: ‘Research on the Breakthrough Paths and Strategies for Shanghai to Build a World-Class Marine Equipment Industry Cluster from the Perspective of New Quality Productive Forces’, Project Number 24692108800.
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Jin, X., Liu, S. & Lei, X. ICT investment and carbon emission efficiency in regional port groups: evidence from Chinese coastal provinces. Humanit Soc Sci Commun (2026). https://doi.org/10.1057/s41599-026-06509-4
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DOI: https://doi.org/10.1057/s41599-026-06509-4
