Revitalizing idle rural residential bases is essential for improving the utilization rate of residential resources, activating pastoral land resources assets, increasing farmers’ property income, and stimulating rural development vitality. Social capital is one of the essential social resources owned by farmers, which is closely related to rural social governance and farmers’ daily lives and plays an indispensable role in revitalizing residential land. Based on the theory of social capital and the survey data of 316 farm households in Shaanxi Province in 2022, this study first empirically analyzes the influencing factors of social capital and its constituent dimensions on farm households’ willingness to revitalize their home-steads using a Logit regression model, and then empirically analyzes the hierarchical structure relationship among the influencing factors using an ISM model. The results of the study show that: (1) Social capital and its three constituent dimensions of social network (“Contact with relatives, neighbors, and families” and “Contact with village committee staff”), social trust (“Trust in friends and relatives” and “Trust in village committee and other organizations”), and social participation (“Participation in meetings of village committees and other organizations”) have significant positive effects on farmers’ willingness to revitalize their residential land. (2) There are differences in the effects of different dimensions of social capital on farmers’ willingness to revitalize their homesteads: social trust as a deep-seated cause affects farmers’ social networks and social participation, which in turn affects farmers’ knowledge of homestead revitalization policies and ultimately farmers’ willingness to revitalize their homesteads. Based on the findings of the study, to improve farmers’ willingness to revitalize their homestead bases, government departments should base their efforts on the social capital characteristics of farmers, increase the cultivation of farmers’ social capital, and strengthen the publicity of the work of revitalizing homestead bases and related policies.

Under the dual structure of urban and rural lands, revitalizing rural idle homesteads is an effective measure for reducing resource waste and improving the efficiency of rural land use. Therefore, the intention of farmers, as the primary decision-makers in revitalizing rural idle homesteads, is the key to the success of revitalizing idle homesteads. With an analytical framework based on the theory of planned behavior (TPB), this study used multiple linear regressions to analyze the survey data (N = 680). The results showed that attitude toward the behavior (AB), subjective norms (SN), and perceived behavioral control (PBC) had significant positive effects on the farmers’ intention to revitalize, with SN, PBC, and AB in descending order of influence. It confirmed that the TPB applies to the study of farmers’ intention to revitalize idle homesteads in the context of China. In addition, this study focused on the social phenomenon of farmer differentiation, which is prominent in the urbanization process. It emphasizes the moderating effect of farmer differentiation on the relationships of “attitude toward the behavior–intention to revitalize,” “subjective norm–intention to revitalize,” and “perceived behavioral control–intention to revitalize,” and further improves TPB. The present empirical study using hierarchical regression found that the deeper the differentiation of farmers, the stronger the effective influence of AB, SN, and PBC on farmers’ intention to revitalize idle homesteads. Therefore, it is suggested that the Chinese government should enhance farmers’ intention to revitalize by cultivating a positive attitude toward the behavior, strengthening the positive influence of subjective norms on farmers, and enhancing farmers perceived behavioral control. Furthermore, it is more important to pay full attention to the phenomenon of farmer differentiation and design a revitalization policy according to the differences in sensitivity of different types of farmers to attitudes toward the behavior, subjective norms, and perceived behavioral control.

Urban-rural imbalance impedes sustainable development in modernizing nations. This paper examines China’s urban-rural relations via symbiosis theory, building a model and index system to assess urban-rural symbiosis, contributing to SDG 11 (Sustainable Cities and Communities) and SDG 10 (Reduced Inequalities). Focusing on 31 provinces and cities in China, this study uses data from 2022 and the entropy weight method to evaluate the current urban-rural symbiosis relationship in China. Findings highlight unsustainable urban-rural relations: Firstly, imbalances persist between urban and rural areas in China regarding resource allocation, public services, and development speed, hindering sustainable and equitable development. Secondly, spatial differentiation and insufficient flow of factors significantly restrict the development of urban-rural symbiosis, impacting resource efficiency and balanced regional growth. Thirdly, the levels of cultural and ecological symbiosis between urban and rural areas are low and uneven, posing risks to environmental sustainability and social cohesion. Recommendations include strengthening rural units for collaboration, using counties to improve the symbiosis interface, and optimizing the symbiotic environment. These measures aim to guide, incentivize, coordinate, and protect positive urban-rural relations, driving symbiosis towards a more balanced, inclusive, sustainable urban-rural development model for China, offering insights for similar nations.

Residents' participation is crucial for sustainable old neighborhood regeneration. Residents' intentions to participate in the regeneration are low in China, resulting in unsustainable neighborhood development problems. Therefore, it is essential to investigate the drivers of residents' participation. Residents' behavioral mechanisms are deeply embedded in their social networks, especially in acquaintance social networks typical of old neighborhoods in China. By constructing a mediated moderation model based on the Theory of Planned Behavior (TPB) and danwei system and taking the old neighborhood regeneration in Xi'an as a case study, this paper investigates the paths and mechanisms of the social network embeddedness, TPB, and danwei system on residents' participation intention. The results show that social network embeddedness can improve residents' intention to participate in regeneration through both direct and indirect pathways, and its indirect effect is much larger than the direct effect. Attitude, subjective norm, and perceived behavioral control significantly and positively mediated the contribution of social network embeddedness on participation intention. However, the specific mediating effect of attitude is significantly smaller than the other two. The danwei system has a significant moderating effect in the first stage of the relationship between social network embeddedness and participation intention. These imply that the extrinsic social factor of social network embeddedness is internalized as a driving force for convergence and motivation of residents' participation intentions mainly through the normative pressure and exchange of experiences between acquaintances and that the danwei system reinforces this extrinsic-intrinsic facilitation process through the danwei's "physical presence." These findings provide revelatory countermeasures for exploring the factors that motivate residents to participate actively in neighborhood regeneration and encourage their involvement at the intervention level.

Introduction: While the rapid advancement of urbanization has driven the improvement of material living standards, it has also brought about rapid social changes and intensified competition. In this “involutive” environment characterized by highly competitive and strong pressure, urban residents tend to fall into a state of “mental exhaustion.” Anxiety, depression, sleep disorders, and other mental illnesses have seriously threatened public health in Chinese cities. Support from social relations is crucial for enhancing residents’ subjective well-being (SWB) and promoting their mental health, especially in China’s highly contextualized collectivist culture.Methods: According to the social structure of China’s “difference sequence pattern,” this paper constructs a theoretical framework of the relationship between social relations and SWB based on the convoy model and uses CGSS2018 data to verify the applicability of the theoretical framework.Results: Kinship and friendship positively relate to SWB, and their interaction effect is significantly negative. There is no necessary correlation between neighborhood and SWB. The relationship between social relations and SWB of different age groups is heterogeneous. In addition, the moderating effects of relative income and social class are significantly negative.Discussion: Kinship and friendship are Chinese urban residents’ SWB convoys, and these two factors have an obvious substitution effect. The neighborhood has withdrawn from the convoy orbit of Chinese urban residents’ SWB, which may be related to neighborhood indifference caused by China’s housing system reform. From the life course perspective, the SWB convoys of young and middle-aged groups consist of kinship and friendship, while those of elderly people include kinship and neighborhood. In addition, for poor individuals living at the bottom of society, support from kinship is the most important source of social capital. These findings provide new insights into the relationship between social relations and the welfare of Chinese urban residents.