Core Viewpoint - The article highlights the innovative "mangrove-crab-shellfish-algae" coupling coexistence model in Zhanjiang, Guangdong, which revitalizes degraded wetlands and achieves both ecological restoration and economic benefits, with annual output value reaching over 10,000 yuan per mu [2][3]. Summary by Sections Ecological Restoration and Economic Development - Zhanjiang has implemented a "mangrove planting-aquaculture coupling coexistence" model to balance ecological protection and economic development, becoming a benchmark for ecological restoration empowered by technology [3]. - The area has the largest and most concentrated national mangrove nature reserve in China, but historical practices like pond farming and land reclamation severely impacted mangrove habitats [2][3]. Innovative Practices - The Zhanjiang Bay Laboratory's Mangrove Protection Research Center has developed a trial base for the "mangrove-crab" ecological coupling model, which includes planting various mangrove species and aquaculture of blue crabs and shellfish [3][5]. - The introduction of mangroves helps absorb aquaculture waste, improve water quality, and provide natural habitats for crabs, thus enhancing their survival rates [4][5]. Economic Benefits - The trial has shown promising results, with an estimated yield of 30-50 kg per mu annually, generating income of 9,000 to 15,000 yuan per mu [5][6]. - The center has also developed techniques for breeding high-value "yellow butter crabs," achieving a conversion rate of nearly 70%, marking a significant breakthrough in crab farming [6]. Broader Implications - The successful implementation of this model not only provides valuable experience for mangrove protection but also creates a sustainable economic model for local aquaculture, transforming traditional farming into a profitable venture [5][6]. - Currently, approximately 60% of Guangdong's mangrove area is included in natural protected areas, indicating a strong commitment to ecological conservation while promoting economic growth [6].
红树林里“蟹”成金
21世纪经济报道·2025-08-15 07:31