Carbon emissions are an important research topic of ecological security, which has a significant impact on the realization of "dual carbon" strategy. With the methods of the STIRPAT model, LMDI factor decomposition, and Tapio decoupling, the status of China's carbon emissions was analyzed based on the data in the past 10 years, and the trend of China's carbon emissions was evaluated from 2020 to 2030. The study finds that: (1) The growth momentum of carbon emissions has slowed down, but the overall trend of carbon emissions is positive; (2) Economic scale and energy intensity are the core factors affecting carbon emissions, while industrial structure, population size, and energy structure have limited influence on carbon emissions; (3) China's economic development and carbon emissions are in a weak decoupling state, but the overall decoupling trend is good, and all factors are making efforts to decouple in a positive direction. The study deepens the understanding of carbon emissions, and the following countermeasures are formed: (1) Firming the implementation of the "dual carbon" strategy to effectively intervene the carbon emissions in China; (2) Highlighting the high-quality economic development to strengthen the positive effect of economic scale on carbon emissions; (3) Improving the energy utilization rate to enhance the inhibitory effect of energy intensity on carbon emissions; (4) Innovating a new development model to strengthen the systematic planning of factors affecting carbon emissions.
The shellfish and algae carbon sinks as an important part of the fishery carbon sinks. It is of great significance to evaluate the current development status of shellfish and algae carbon sinks for the development of fishery carbon sinks and realization of carbon neutrality. There are a lot of studies on the quantitative relationship of shellfish and algae carbon sinks, but few researches on its spatial relationship. This study used the Natural Breaks and Standard Deviation Ellipse (SDE) in Geographic Information System (GIS) to analyze the spatial evolutionary characteristics of China's shellfish and algae carbon sinks from 1992 to 2021. The results show that spatial distribution of carbon sinks varied widely in different regions, the overall spatial layout was stable and gradually formed a pattern of integrated and coordinated development of key regions and general regions. The structure of the shellfish and algae carbon sinks was unbalanced in China, in which algae carbon sinks had great potential for development. China's shellfish and algae carbon sinks had strong resilience after natural disasters. Based on the above findings, this study suggests that all regions should increase the total output of shellfish and algae, expand the scale of algae, and achieve a balanced development of the shellfish and algae industry. Local governments should introduce marine environmental governance policies according to local conditions to achieve precise intervention in key carbon sink areas and overall governance in general carbon sink areas. The government should actively promote the expansion of shellfish and algae mariculture scale. This study will provide reference for the future development of China's fishery carbon sinks.
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