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Background Urban community health services are key to promoting the high-quality development of community health. However, previous studies have seldom explored the evolutionary logic and development trend of community health service policies. It is difficult to provide a comprehensive answer to the questions of the generation, evolution and trend of community health service policies in China. Objective To understand the current status, evolutionary logic and trend of community health service policies, in order to provide intellectual reference for promoting the high-quality development of community health services and implementing the hierarchical diagnosis and treatment system. Methods The Central People's Government website, National Health Commission, relevant official provincial websites, CNKI, China Community Health Association and other platforms were searched from December 2019 to March 2022 for community health service reform related policies published at national level (n=98) from January 1997 to March 2022. The included policies were analyzed with the help of the policy orientation analysis model. Results The policy changes in urban community health services of China have gone through four stages since 1997, including initial exploration centered on the transformation and frame construction (from 1997 to 2002), normative construction focusing on the bottom of the public health network (from 2003 to 2008), prosperous development focusing on the mechanism reform (from 2009 to 2016), and deepening reform centered on quality improvement and empowerment (from 2017 to 2022). The changes in community health service policies in China follows the following evolutionary logic, including the dynamic mechanism from marketization to professionalization and social community linkage governance, target orientation from scale expansion to internal quality improvement, policy discourse changing from predominantly economics-based discourse to multiple tools coordination. Conclusion Community health service policies should promote the innovation of the dual collaborative governance framework and mechanism, strengthen the coordination among professional systems and their effective synergistic linkage with the social community governance systems; promote community value-based health care and trust-based health care with health as the core, establish and improve evaluation standards for the capacity and quality of specialized primary care; promote the diversified application and matching of policy tools to adapt to the diversified needs of community health and wellness interests.

In the context of the national ecological security development strategy, constructing regional ecological networks centered on protected areas and ecological corridors has become an urgent issue in protected areas system development of China. We focused on strengthening ecological connections between protected areas in Guangzhou, identified the ecological resource patches, ecological corridors, and ecological nodes by using Invest model, connectivity analysis, circuit theory models, and graph-theoretical network structure evaluation, and constructed an ecological network for the Guangzhou with nature reserves as the core. The results showed that 52 ecological resource patches were identified in the study area, covering a total area of 1450.01 km². Nature reserves accounted for 76.4% of the total area, forming the main part of the ecological resource patches. 115 ecological corridors were identified, with a total length of 900.56 km and an average length of 7.83 km. Furthermore, 72 ecological key points were identified, covering a total area of 17.57 km², and 81 ecological breakpoints, with a total area of 35.9 km². The network structure indices (α = 0.65, β = 2.21, and γ = 0.77) indicated a reasonably structured and well-connected network. By exploring pathways for constructing regional ecological networks under the protected areas system and enriching the application of circuit theory models in ecological network construction, this study provides scientific basis for regional ecological security and biodiversity conservation. [ABSTRACT FROM AUTHOR]