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Rapid urbanisation in Ya’an City, Sichuan Province, has caused environmental pollution and energy depletion in all districts, and the situation of coupled coordinated development is critical. In this study, with the help of PSR model, indicators are established and analysed from two aspects, namely, new urbanization and ecological environment, and a coupled coordinated development evaluation model is constructed. Finally, based on the calculation results, it is concluded that there are large gaps in the coupled and coordinated development of the eight districts and counties, and the problem of unbalanced and insufficient development is prominent. This study puts forward relevant path analyses and suggestions.

Greenhouse gas emission has serious impacts on human societies, ecosystems and economies as a result of global climate change. In response to this challenge, the global community has set greenhouse gas reduction targets aimed at reducing emissions of greenhouse gases such as carbon dioxide (CO2). In terms of emission reduction technology, CO2 geological storage technology is considered to be an important and potential solution. The wide application of CO2 geological storage technology can help achieve greenhouse gas reduction targets and slow down the greenhouse effect of the earth. The research will explore the role of CO2 geological storage technologies for global greenhouse gas emission reduction targets. Through extensive collection of relevant information on CO2 geological storage technology around the world, comprehensive research and analysis of the principle, application cases, limiting challenges and environmental impact of this technology, to evaluate the prospects and prospects of CO2 geological storage technology in achieving global emission reduction goals challenge. The study found that the geological storage of CO2 can promote the reduction of global greenhouse gas emissions, and its long-term effect will be more obvious, and the advantages will be more obvious with the improvement of technology and the cooperation between international governments.