The Influence of Green Supply Chain Management Practices on Sustainability Performance in the Sultanate of Oman Industries: The Mediating Role of Environmental Collaboration
Green supply chain management (GSCM) has become a strategic requirement for industrial firms seeking to reduce environmental harm while improving long-term sustainability performance. Despite growing interest in green procurement, eco-design, green manufacturing, and green distribution, limited empirical evidence explains how these practices are converted into sustainability performance through collaborative environmental action in the Sultanate of Oman. Guided by the Natural Resource-Based View, this study examines the effects of four GSCM practices on environmental collaboration and investigates the mediating role of environmental collaboration in the relationship between GSCM practices and sustainability performance. A quantitative cross-sectional survey was conducted among procurement, manufacturing, logistics, and supply chain professionals working in Omani industries. From 520 questionnaires distributed, 342 valid responses were retained for analysis. The data were analyzed using Smart PLS 4.0 and partial least squares structural equation modelling. The measurement model demonstrated acceptable reliability, convergent validity, and discriminant validity. The structural results show that eco-design, green procurement, green manufacturing, and green distribution have significant positive effects on environmental collaboration. Environmental collaboration, in turn, has a strong positive effect on sustainability performance. The indirect effects also support the mediation of the relationships between the GSCM practices and the sustainability performance, confirming the mediation chain. The results indicated that green practices are not enough; they have to be integrated with the collaboration of suppliers, customers, logistics and other functions within the company to make green practices produce results in terms of performance. The study adds to GSCM and sustainability literature by providing a relational mechanism that determines the contribution of green practices to the industrial sustainability of the Oman context.