Core Viewpoint - The transformation of Dachen Island from a polluted area to an ecological paradise showcases the successful implementation of integrated marine and land governance, emphasizing the harmony between humans and nature [1][2][3]. Environmental Governance - Dachen Island has undergone significant ecological restoration, moving from direct sewage discharge into the sea to a coordinated effort for a "clear water and clean beach" environment [2]. - The "Marine Cloud Warehouse" smart pollution control model was pioneered in 2019, utilizing technology to manage ship waste effectively [3]. - The "Blue Cycle" concept was introduced in 2022, focusing on marine plastic waste management, with Dachen Island as a pilot area, leading to the largest marine waste recovery project in China [3]. Clean Energy and Low Carbon Emission - Dachen Island benefits from an average wind speed of 6.8 m/s, generating over 60 million kWh annually, which supports local energy needs and promotes low-carbon living [4]. - The island has transitioned to all-electric aquaculture and hospitality services, significantly reducing reliance on diesel generators [5]. - The first "green hydrogen" comprehensive energy demonstration project in China was launched on Dachen Island, showcasing innovative energy storage and utilization [5]. Carbon Trading and Economic Benefits - Dachen Island has initiated carbon trading projects, with the first marine blue carbon transaction successfully completed, indicating a growing recognition of ecological resources as economic assets [6]. - The introduction of carbon credit financial products, such as "Jiao Lan Loan," supports local businesses in sustainable practices [6]. Coastal and Ecological Restoration - The coastal restoration efforts have improved the island's shoreline, creating new sandy beaches and enhancing the ecological environment [7]. - Vegetation restoration projects have increased forest coverage to over 60%, attracting diverse wildlife and enhancing biodiversity [8]. Conclusion - Dachen Island exemplifies a successful model of ecological restoration and sustainable development, integrating advanced technology, clean energy, and community engagement to foster a harmonious relationship between nature and local livelihoods [9].