Microalgae photosynthetic carbon sequestration technology, financing subsidies and carbon trading mechanism: An evolutionary game mechanism modeling study from a biomechanical perspective

The global consensus to move towards carbon neutrality has been growing amidst turbulence, and the issue of carbon emissions has been an unavoidable topic for achieving the goal of carbon neutrality. The introduction of microalgae photosynthetic carbon sequestration technology optimizes the culture environment of microalgae through hydrodynamics and enhances the efficiency of light and carbon dioxide transfer, thus increasing the rate of photosynthesis and carbon sequestration effect of microalgae. Based on the biomechanical perspective, this study constructed a three-party dynamic evolution game model including agricultural subjects, enterprises and local governments, analyzed the mechanism of photosynthetic carbon sequestration by microalgae, the financing subsidy system and the carbon trading mechanism, and explored the strategic choices and behavioral evolution process of the agricultural subjects and local enterprises in the face of different policy incentives, and verified the conclusions by numerical simulation analysis. The study shows that: (1) the implementation of financial subsidy policies by local governments significantly increases the willingness of agricultural producers and enterprises to apply microalgae photosynthetic carbon sequestration technology, thus accelerating the process of agricultural carbon emission reduction; (2) the integration of energy enterprises and microalgae industry in the carbon trading market is conducive to the generation of renewable energy, and realizes a win-win situation for the government’s environmental benefits and the enterprise’s economic benefits; (3) the adoption of microalgae carbon sequestration by agricultural producers (3) The adoption of microalgae carbon sequestration technology by agricultural producers is conducive to the promotion of the virtuous cycle of soil microbial communities and the realization of crop income. This study evaluates the potential impacts of different policy combinations on agricultural carbon emission reduction based on the carbon trading mechanism, which can help promote the application of microalgae carbon sequestration technology and the implementation of agricultural carbon emission reduction.