Green Innovation, Export Synergy, and Total Factor Productivity: Evidence from China’s Marine Enterprises

Peng Tian, Haofeng Sun, Yang Yang and Xurui Guo ()
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Peng Tian: School of Economics and Management, Zhejiang Ocean University, Zhoushan 316022, China
Haofeng Sun: Department of International Economics and Trade, Kyungpook National University, Daegu 41566, Republic of Korea
Yang Yang: School of Economics and Management, Zhejiang Ocean University, Zhoushan 316022, China
Xurui Guo: School of Economics and Management, Zhejiang Ocean University, Zhoushan 316022, China

Sustainability, 2025, vol. 17, issue 13, 1-26

Abstract: In the context of China’s “dual carbon” goals and rising green trade barriers, green transformation is key to improving total factor productivity (TFP) and competitiveness in marine industries. This study uses panel data of Chinese listed marine enterprises (2014–2023) and a multidimensional fixed-effects model to examine how green innovation, export, and R&D investment jointly affect TFP. Results show that (1) green innovation has an inverted “S”-shaped nonlinear effect on TFP, with marginal returns rising, then accelerating, and finally declining; (2) positive synergies exist between green innovation and both exports and R&D, while the export–R&D interaction negatively affects TFP, indicating coordination challenges.; and (3) ownership heterogeneity matters, as state-owned enterprises benefit from stronger institutional support, mitigating negative effects, while private firms are more vulnerable due to weaker green technology mechanisms. This study emphasizes green innovation as a driver for sustainable productivity growth in marine enterprises and suggests policies that improve institutional frameworks, incentives, and resource allocation to support high-quality green innovation.

Keywords: green innovation; export synergy; total factor productivity (TFP); marine enterprises; sustainable development (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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