Integrating Environmental Governance and Sustainable Agriculture through the Blue-Green Continuum Framework

Agricultural productivity in coastal and riverine regions depends on the integrity of both terrestrial and aquatic ecosystems, yet environmental and agricultural policies are commonly designed and implemented through separate institutions. This fragmentation is particularly consequential in the Niger Delta, where farming, fisheries, wetlands, mangroves, floodplains, drainage systems, industrial activity and human settlements are ecologically interconnected. This article develops the Blue-Green Continuum Framework as an integrated environmental-agricultural governance model for climate-resilient food systems. The study adopts a conceptual synthesis and policy-analysis methodology, drawing on sustainable development theory, systems thinking, natural capital, ecosystem services, climate-smart agriculture, circular economy principles, environmental safeguards and integrated water-resource governance. It identifies five principal pathways through which environmental conditions shape agricultural outcomes: water and watershed integrity; soil and land-system health; biodiversity and ecosystem services; climate-risk regulation; and pollution and waste flows. The article proposes a seven-pillar implementation architecture comprising natural-systems integration, integrated value chains, climate resilience, environmental safeguards and restoration, inclusive livelihoods, institutional coordination, and knowledge, data and monitoring. Applied to Rivers State, Nigeria, the framework demonstrates how wetland protection, regenerative agriculture, agroforestry, sustainable irrigation, pollution control, aquaculture, circular bioeconomy practices and coordinated land-water planning can jointly improve food security, rural livelihoods and ecological resilience. The article contributes an original policy framework that reframes agriculture not as an isolated land-based sector but as a production system embedded within a continuous blue-green landscape. It concludes that sustainable agricultural transformation in vulnerable coastal regions requires governance structures that manage land, water, biodiversity, infrastructure and livelihoods as one connected development system. Keywords: Blue-Green Continuum, sustainable agriculture, environmental governance, climate resilience, food security, wetlands, Niger Delta, natural capital, environmental safeguards, integrated land and water management.