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In urban development, balancing the ecological services of park green space with residents' daily life and recreational needs, achieving sustainable development is an important issue in urban construction. The satellite cities of megacities have large development potential and are suitable research objects. This paper takes the Daxing District of Beijing as the research target and measures the integrated level of supply and demand by selecting unique evaluation indicators by integrating various dimensions and using the improved coupled coordination model and indicators with an expanded selection range at the smallest administrative unit of Chinese community unit scale innovatively. The study shows that: (1) The spatial heterogeneity between the supply and demand of parkland in 85 community units in Daxing New Town is obvious, the overall performance conforms with "demand exceeds supply", and the supply and demand are generally positively correlated. (2) The correlation degree of the matched supply and demand is analyzed, and it is found that 55 community units show a mismatch between supply and demand and 53 community units have a low level of coordinated development. (3) The superposition analysis shows that the comprehensive level of supply and demand decreases from north to south and from the center to the surrounding area. (4) According to the Daxing New City Park Green Space Coupling Coordination Relationship and Policy Document, we divided the community units in Daxing New Town into six types, and provided differentiated development suggestions. The results of the study can help to guide the sustainable construction of Daxing New City and provide a basis for the future construction of satellite cities in other megacities. [ABSTRACT FROM AUTHOR]

Against the background of the international dialogue and action agendas regarding climate change and the protection of biodiversity, China has embarked during the past years on a new urbanisation approach, gradually advancing from an era of high-speed sprawl to one of more high-quality, green and low-carbon city development. Several national policies and strategies have been put in place, which are consequently rolled out at the sub-national level in provinces and cities. Energy efficiency in urban areas, nature-based solutions and new green ecological site developments are particularly important planning priorities fuelling the national government's ambition to transform cities to be more liveable and sustainable. Further priorities are digitalisation and smart city approaches, as well as responding to COVID-19 implications in the sense of 'green recovery'. This paper summarises the low-carbon development policy framework in China and provides three case studies of selected projects from the capital city, Beijing. [ABSTRACT FROM AUTHOR]