To promote urban-rural integration and establish an internal circulation channel between urban and rural areas, it is necessary to facilitate the flow, interaction and balanced allocation of the four dimensions of people, land, industry and governance. Taking Longweiba Village in Zhangjiajie City, Hunan Province as a case study, the symbiosis theory from ecology to analyze the synergistic dynamic evolution process of “people-land-industry-governance” in rural areas was employed. Based on the framework of “symbiotic unit-symbiotic environment-symbiotic mode” derived from symbiosis theory, a synergistic development path for rural areas was proposed, in order to activate the vitality of rural population, land, industry, governance and other elements, achieve new endogenous rural development, and provide referential experiences and suggestions for other rural areas.

Aiming to study the driving effect of industrial digitalization on the high-quality development of equipment manufacturing industry in Liaoning Province was mainly studied, the data of Liaoning Province from 2013 to 2022 was used as the research sample, entropy method and DEA-Malmquist index were used respectively to measure the high-quality development level of industrial digitalization and equipment manufacturing industry in Liaoning Province. On this basis, the ordinary least square method to do empirical research was used. The research shows that industrial digitalization has a significant driving effect on the high-quality development of the equipment manufacturing industry in Liaoning Province, which is significantly positive at the level of 1%. The application of digital technology should be strengthened to achieve quality and efficiency improvement and digital transformation and upgrading, so as to realize the high-quality development of the equipment manufacturing industry in Liaoning Province.

The western part of Liaoning province is rich in tourism and leisure resources, and has great geographical advantages for the Beijing-Tianjin-Hebei, but there are some problems such as unclear market positioning, lacking brand construction, insufficient promotion, incomplete infrastructure and supporting facilities and so on. Based on the actual needs of tourism in the Beijing-Tianjin-Hebei region, a strategic layout and positioning was made to strengthen the plan and construction of tourism, comprehensively improve infrastructure, accelerate the construction of landmark major projects, create high-level scenic spots and boutique routes, using culture to support the development of tourism in western Liaoning, creating a boutique brand system, continuously improving publicity and promotion methods and scope to assist the construction of tourism destinations in western part of Liaoning province towards the Beijing-Tianjin-Hebei region.

Accelerating the orderly transfer of the manufacturing industry holds significant strategic importance for enhancing the level of new urbanization in the middle and upper reaches of the Yangtze River Economic Belt to achieve coordinated development. Based on the Spatial Durbin SDM model, the impact mechanism of the transfer of the manufacturing industry in the middle and upper reaches of the Yangtze River Economic Belt was analyzed from 2011 to 2022 on new urbanization. The results demonstrate spatial negative autocorrelation between the transfer of the manufacturing industry and urbanization in the middle and upper reaches of the cities, indicating that excessive undertaking of industrial transfer may have adverse effects on local urbanization. Further analysis reveals that due to regional heterogeneity, the negative spatial spillover effect of manufacturing industry transfer on urbanization is more significant in the middle reaches than in the upper reaches.

Based on the integration model of Technology Acceptance Model (TAM) and Planning Behavior Theory (TPB), taking rural water purification equipment as an example, policy regulations were introduced to study the safety of rural drinking water. The results show that perceived ease of use is a key factor affecting the willingness of rural consumers to use water purification equipment. Policy regulation has a significant impact on the willingness to use water purification equipment. Perceptual ease of use has a positive impact on subjective norms, behavioral attitudes and perceptual behavior control. Policy regulation has a negative impact on behavioral attitudes and perceptual behavior control. Behavioral attitude and perceptual behavior control also play a key role in determining the willingness to use water purification equipment, while subjective norms have no significant impact on the willingness of rural consumers to use water purification equipment.

In order to promote the high-quality development of the six provinces in the central region, the comprehensive evaluation indexes of the three major systems of population, economy and resources and environment in the central region were firstly measured, then the spatial and temporal evolution patterns were analyzed through the construction of the coupled coordination model of the three systems and the three time sections were selected, and finally the obstacle degree model was used to explore the main influencing factors of the coordinated development of the coupled systems. The results show that the comprehensive evaluation scores of the population and economic subsystems are generally on the rise within the study interval, and the level of coupled coordination is also steadily increasing. The resource and environment subsystem is an important constraint on the coordinated development of the three systems in the central region, and the per capita liquefied petroleum gas consumption is the main obstacle factor.

Based on the analysis of the development situation of gazelle enterprises in Fujian Province, 19 variables were designed to analyze the innovation ecosystem from four dimensions of innovation ability, scientific research environment, factor cooperation and location development, and the influencing factors were quantified. Six variables were selected by LASSO regression and elastic net regression and included in the random forest for empirical analysis. According to the degree of importance, the influencing factors are ranked in order of the number of inventors, human capital, the number of utility model and design patents, patent citations, technical relevance, and population density. Finally, some policy suggestions are put forward, such as tapping the potential and vitality of innovation subjects, improving the construction of innovation platforms, optimizing the structure of human capital, and improving the environment for innovation and entrepreneurship.

Financial S&T expenditure is very important for promoting national S&T innovation and high-quality development. Firstly, the LP method was applied to measure the total factor productivity of enterprises and the economic transformation ability of fiscal S&T expenditures in Xi’an city was discussed. Secondly, taking the Xi’an listed companies in Shanghai and Shenzhen from 2012 to 2022 as samples, an empirical research on how fiscal S&T expenditures affect the TFP of enterprises was conducted through the method of matching with macro data. The results show that increasing the intensity of fiscal S&T expenditures helps to improve enterprise total economic productivity. In view of this, in order to improve the total industrial productivity of enterprises in Xi’an and to play the role of leverage of fiscal S&T inputs on economic development, not only the input-output structure of fiscal S&T expenditures should be considered, but also relevant suggestions should be put forward from the government’s point of view.

To evaluate the comprehensive benefits of urban renewal, Shijiazhuang City was selected as the main research object, with Zhengzhou City serving as a reference. Based on urban renewal data from 2014 to 2022, an index system encompassing economic, social and environmental benefits was constructed. The comprehensive benefits of urban renewal in these cities were quantitatively analyzed using DEA and EWM methods. The results indicate that Shijiazhuang’s urban regeneration benefits from 2015 to 2017 are not DEA-efficient, exhibiting an increasing trend in the coefficient of returns to scale, and a large input redundancy and output insufficiency rate. In contrast, for the remaining years, the results demonstrate strong DEA efficiency with constant returns to scale, and input redundancy and output insufficiency rates remained at normal levels. Meanwhile, Zhengzhou exhibits strong DEA efficiency with constant returns to scale throughout the entire period. In terms of input and output levels, Shijiazhuang’s urban renewal from 2014 to 2018 is characterized by low input and low output. In 2019, it shifts to low input and high output, and from 2020 to 2022, transitions to high input and high output. Shijiazhuang’s urban renewal efforts primarily focuses on social rights and interests, while Zhengzhou emphasizes economic benefits. The comprehensive benefit score of urban renewal in Shijiazhuang shows an upward trend from 2014 to 2022, with rapid growth before 2018 and slower growth after 2019. Zhengzhou’s comprehensive benefit score follows a similar upward trajectory, although at a lower level than Shijiazhuang. Finally, suggestions for urban renewal development are provided to offer valuable insights for high-quality urban development.

Facing global environmental and resource challenges, achieving harmonious coexistence between resources, environment and economic development is the key to high-quality regional economic development. Using China National Knowledge Infrastructure (CNKI) as the data source, relevant core journal articles published from 2004 to 2023 were selected to create a knowledge graph through CiteSpace, revealing the growth trend and hot areas of decoupling theory in regional economic development research. The importance of decoupling theory in promoting the development of low-carbon and green industries is emphasized, and low-carbon economy, green development and circular economy have become research hotspots. Future research should deepen empirical analysis of decoupling theory, expand its applications, and promote multidimensional cooperation to achieve the “dual carbon” goal.